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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

//////////////////////////////////////////////////////////////////
// ▓███████████████ ▒▒▒▒▒▒▒▒██ ░░░░░░░░░░ ▒▒▒▒▒▒▒▒▒▒███ ▓▓▓▓███ //
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// ░░░░░░░░░░░░████ ▒▒▒▒▒▒▒▒██ ▓░░░░░░░░░ █████████████ ██████▓ //
// █████░░░░░░░░░░░ █████████▒ ▓░░░░░░░░░ ▒████████████ ████▓▓▓ //
//////////////////////////////////////////////////////////////////
// ABO, 2025 ███████████████████████████ Leander Herzog & 0xfff //
//////////////////////////////////////////////////////////////////

import "./AboAdmin.sol";
import "./Render.sol";
import {AboState, AboStateLib} from "./AboState.sol";
import "./Sculpture.sol";

contract Abo is AboAdmin, Sculpture {
    using AboStateLib for AboState;

    uint8 public constant MAX_CONNECTIONS = 6;
    uint256 public totalConnectionCount; // ↑ only
    mapping(uint8 => AboState) public abos;

    // ABO Events
    event Connect(uint8 indexed from, uint8 indexed to);
    event Disconnect(uint8 indexed from, uint8 indexed to);
    event Ignore(uint8 indexed from, uint8 indexed blocked);
    event Unignore(uint8 indexed from, uint8 indexed unblocked);

    // [aside] Unlock
    event Unlock(uint256 _tokenId);

    // EIP-4906: Metadata Update
    event MetadataUpdate(uint256 _tokenId);

    constructor(address _owner) AboAdmin(_owner) {}

    //////////////////////////////////////////////////////////
    // Token
    //////////////////////////////////////////////////////////

    function name() public pure override returns (string memory) {
        return "ABO by Leander Herzog and 0xfff";
    }

    function symbol() public pure override returns (string memory) {
        return "ABO";
    }

    function tokenURI(uint256 id) public view override returns (string memory) {
        return Render(render).tokenURI(id);
    }

    function isUnlocked(uint256 id) public view returns (bool) {
        return abos[uint8(id)].isUnlocked;
    }

    function _beforeTokenTransfer(address from, address, uint256 id) internal view override {
        if (from != address(0) && !isUnlocked(id)) {
            revert("Token is locked. Connect to unlock.");
        }
    }

    //////////////////////////////////////////////////////////
    // Connections
    //////////////////////////////////////////////////////////

    function connect(uint8 fromId, uint8 toId) external {
        require(msg.sender == ownerOf(fromId), "Not the owner");
        require(_exists(toId), "Token does not exist");
        require(toId != fromId, "Cannot connect to self");

        AboState memory fromState = abos[fromId];
        AboState memory toState = abos[toId];

        require(!toState.isIgnoring(fromId), "Token is ignoring you");

        // Remove reverse connection if it exists
        if (toState.hasOutbound(fromId)) {
            toState = toState.removeOutbound(fromId);
            fromState = fromState.removeInbound(toId);
        }

        // Add outgoing connection and unlock
        fromState = fromState.addOutbound(toId);
        if (!fromState.isUnlocked) {
            fromState = fromState.setUnlocked(true);
            emit Unlock(fromId);
        }

        // Add incoming connection and unlock
        toState = toState.addInbound(fromId);
        if (!toState.isUnlocked) {
            toState = toState.setUnlocked(true);
            emit Unlock(toId);
        }

        // Save states back to storage
        abos[fromId] = fromState;
        abos[toId] = toState;

        // Count the connection
        totalConnectionCount++;

        emit Connect(fromId, toId);
        emit MetadataUpdate(fromId);
        emit MetadataUpdate(toId);
    }

    function connect(uint8 fromId, uint8[] calldata ids) external {
        require(msg.sender == ownerOf(fromId), "Not the owner");

        AboState memory fromState = abos[fromId];

        for (uint256 i = 0; i < ids.length; i++) {
            uint8 to = ids[i];
            require(_exists(to), "Token does not exist");
            require(to != fromId, "Cannot connect to self");

            AboState memory toState = abos[to];

            require(!toState.isIgnoring(fromId), "Token is ignoring you");

            // Remove reverse connection if it exists
            if (toState.hasOutbound(fromId)) {
                toState = toState.removeOutbound(fromId);
                fromState = fromState.removeInbound(to);
            }

            // Add connection
            fromState = fromState.addOutbound(to);
            toState = toState.addInbound(fromId);

            // Count the connection
            totalConnectionCount++;

            if (!toState.isUnlocked) {
                toState = toState.setUnlocked(true);
                emit Unlock(to);
            }

            // Save to state back to storage
            abos[to] = toState;
            emit Connect(fromId, to);
            emit MetadataUpdate(to);
        }

        if (!fromState.isUnlocked) {
            fromState = fromState.setUnlocked(true);
            emit Unlock(fromId);
        }

        // Save from state back to storage
        abos[fromId] = fromState;
        emit MetadataUpdate(fromId);
    }

    function disconnect(uint8 fromId, uint8[] calldata ids) external {
        require(msg.sender == ownerOf(fromId), "Not the owner");

        AboState memory fromState = abos[fromId];

        for (uint256 i = 0; i < ids.length; i++) {
            require(_exists(ids[i]), "Token does not exist");
            require(ids[i] != fromId, "Cannot disconnect self");

            uint8 to = ids[i];
            AboState memory toState = abos[to];

            if (fromState.hasOutbound(to)) {
                // Remove outgoing connection
                fromState = fromState.removeOutbound(to);
                toState = toState.removeInbound(fromId);
                emit Disconnect(fromId, to);
            } else if (toState.hasOutbound(fromId)) {
                // Remove incoming connection
                toState = toState.removeOutbound(fromId);
                fromState = fromState.removeInbound(to);
                emit Disconnect(to, fromId);
            } else {
                revert("Not connected");
            }

            // Save to state back to storage
            abos[to] = toState;
            emit MetadataUpdate(to);
        }

        // Save from state back to storage
        abos[fromId] = fromState;
        emit MetadataUpdate(fromId);
    }

    function disconnectAll(uint8 toId) external {
        require(msg.sender == ownerOf(toId), "Not the owner");

        AboState memory toState = abos[toId];
        require(toState.totalCount() > 0, "Token has no connections");

        // Remove all outgoing connections from other tokens' incoming lists
        uint8[] memory outgoingIds = toState.getOutbound();
        for (uint256 i = 0; i < outgoingIds.length; i++) {
            uint8 targetId = outgoingIds[i];
            AboState memory targetState = abos[targetId];
            targetState = targetState.removeInbound(toId);
            abos[targetId] = targetState;
            emit Disconnect(toId, targetId);
            emit MetadataUpdate(targetId);
        }

        // Remove all incoming connections from other tokens' outgoing lists
        uint8[] memory incomingIds = toState.getInbound();
        for (uint256 i = 0; i < incomingIds.length; i++) {
            uint8 sourceId = incomingIds[i];
            AboState memory sourceState = abos[sourceId];
            sourceState = sourceState.removeOutbound(toId);
            abos[sourceId] = sourceState;
            emit Disconnect(sourceId, toId);
            emit MetadataUpdate(sourceId);
        }

        // Clear all connections for this token but preserve unlock status
        toState = toState.clearAll();
        abos[toId] = toState;
        emit MetadataUpdate(toId);
    }

    function updateConnections(uint8 fromId, uint8[] calldata ids) external {
        require(msg.sender == ownerOf(fromId), "Not the owner");

        AboState memory fromState = abos[fromId];

        // Validate all target tokens
        for (uint256 i = 0; i < ids.length; i++) {
            require(_exists(ids[i]), "Token does not exist");
            require(ids[i] != fromId, "Cannot connect to self");
        }

        // Track which tokens should remain connected using bitmap
        uint256 shouldKeepBitmap;
        for (uint256 i = 0; i < ids.length; i++) {
            shouldKeepBitmap |= (1 << ids[i]);
        }

        // Remove outgoing connections that are not in the new set
        uint8[] memory currentOutgoing = fromState.getOutbound();
        for (uint256 i = 0; i < currentOutgoing.length; i++) {
            uint8 targetId = currentOutgoing[i];
            if ((shouldKeepBitmap & (1 << targetId)) == 0) {
                AboState memory targetState = abos[targetId];
                targetState = targetState.removeInbound(fromId);
                fromState = fromState.removeOutbound(targetId);
                abos[targetId] = targetState;
                emit Disconnect(fromId, targetId);
            }
        }

        // Remove incoming connections from tokens NOT in the new set
        uint8[] memory currentIncoming = fromState.getInbound();
        for (uint256 i = 0; i < currentIncoming.length; i++) {
            uint8 sourceId = currentIncoming[i];
            if ((shouldKeepBitmap & (1 << sourceId)) == 0) {
                // Remove the outgoing connection from the source token
                AboState memory sourceState = abos[sourceId];
                if (sourceState.hasOutbound(fromId)) {
                    sourceState = sourceState.removeOutbound(fromId);
                    abos[sourceId] = sourceState;
                    emit Disconnect(sourceId, fromId);
                    emit MetadataUpdate(sourceId);
                }
                fromState = fromState.removeInbound(sourceId);
            }
        }

        // Build new outgoing connections which are new
        for (uint256 i = 0; i < ids.length; i++) {
            uint8 toId = ids[i];

            // Skip if already present
            if (fromState.hasConnection(toId)) continue;

            AboState memory toState = abos[toId];

            require(!toState.isIgnoring(fromId), "Token is ignoring you");

            fromState = fromState.addOutbound(toId);
            // Add corresponding incoming connection to toId
            toState = toState.addInbound(fromId);

            // Count the connection
            totalConnectionCount++;

            // Unlock target if needed
            if (!toState.isUnlocked) {
                toState = toState.setUnlocked(true);
                emit Unlock(toId);
            }

            abos[toId] = toState;
            emit Connect(fromId, toId);
            emit MetadataUpdate(toId);
        }

        // Unlock fromId if it was previously locked
        if (!fromState.isUnlocked && ids.length > 0) {
            fromState = fromState.setUnlocked(true);
            emit Unlock(fromId);
        }

        abos[fromId] = fromState;
        emit MetadataUpdate(fromId);
    }

    function ignore(uint8 fromId, uint8 blockId) external {
        require(msg.sender == ownerOf(fromId), "Not the owner");
        require(_exists(blockId), "Token does not exist");
        require(blockId != fromId, "Cannot block self");

        AboState memory fromState = abos[fromId];
        abos[fromId] = fromState.addIgnored(blockId);
        emit Ignore(fromId, blockId);
    }

    function unignore(uint8 fromId, uint8 blockId) external {
        require(msg.sender == ownerOf(fromId), "Not the owner");
        require(_exists(blockId), "Token does not exist");
        require(blockId != fromId, "Cannot unblock self");

        AboState memory fromState = abos[fromId];
        abos[fromId] = fromState.removeIgnored(blockId);
        emit Unignore(fromId, blockId);
    }

    //////////////////////////////////////////////////////////
    // View
    //////////////////////////////////////////////////////////

    function hasOutbound(uint8 from, uint8 to) external view returns (bool) {
        return abos[from].hasOutbound(to);
    }

    function hasInbound(uint8 from, uint8 to) external view returns (bool) {
        return abos[from].hasInbound(to);
    }

    function isConnected(uint8 from, uint8 to) external view returns (bool) {
        return abos[from].hasConnection(to);
    }

    function isIgnoring(uint8 from, uint8 to) external view returns (bool) {
        return abos[from].isIgnoring(to);
    }

    function getConnections(uint8 from) external view returns (uint8[] memory) {
        return abos[from].getConnections();
    }

    function getOutboundConnections(uint8 from) external view returns (uint8[] memory) {
        return abos[from].getOutbound();
    }

    function getInboundConnections(uint8 from) external view returns (uint8[] memory) {
        return abos[from].getInbound();
    }

    function getConnectionCount(uint8 from) public view returns (uint256) {
        return abos[from].totalCount();
    }

    function getCurrentConnectionCount() public view returns (uint256) {
        uint256 count = 0;
        uint256 limit = MINT_SUPPLY + ARTIST_ALLOTMENT;

        for (uint8 i = 1; i <= limit; i++) {
            if (_exists(i)) {
                count += abos[i].outboundCount();
            }
        }

        return count;
    }

    /// @notice Returns token owner, id and connections (as AboState)
    function tokenState(uint8 id) public view returns (address, AboState memory) {
        return (ownerOf(id), abos[id]);
    }

    /// @notice Returns all token owners, ids and connection states
    function tokens() external view returns (address[] memory, uint256[] memory, AboState[] memory, bool[] memory) {
        address[] memory owners = new address[](totalSupply());
        uint256[] memory ids = new uint256[](totalSupply());
        AboState[] memory states = new AboState[](totalSupply());
        bool[] memory unlocked = new bool[](totalSupply());
        uint8 counter;
        for (uint8 i = 1; i <= editionCount; i++) {
            if (_exists(i)) {
                owners[counter] = ownerOf(i);
                ids[counter] = i;
                states[counter] = abos[i];
                unlocked[counter] = abos[i].isUnlocked;
                counter++;
            }
        }
        for (uint8 i = MINT_SUPPLY + 1; i <= MINT_SUPPLY + 1 + apCount; i++) {
            if (_exists(i)) {
                owners[counter] = ownerOf(i);
                ids[counter] = i;
                states[counter] = abos[i];
                unlocked[counter] = abos[i].isUnlocked;
                counter++;
            }
        }
        return (owners, ids, states, unlocked);
    }

    //////////////////////////////////////////////////////////
    // Sculpture
    //////////////////////////////////////////////////////////

    function title() external pure returns (string memory) {
        return "ABO";
    }

    function authors() external pure returns (string[] memory) {
        string[] memory authors_ = new string[](2);
        authors_[0] = "Leander Herzog";
        authors_[1] = "0xfff";
        return authors_;
    }

    function addresses() external view returns (address[] memory) {
        address[] memory addresses_ = new address[](1);
        addresses_[0] = address(this);
        return addresses_;
    }

    string[] private urls_;

    function setUrls(string[] memory _urls) external onlyOwner {
        urls_ = _urls;
    }

    function urls() external view returns (string[] memory) {
        return urls_;
    }

    function text() external view returns (string memory) {
        return string.concat(
            "ABO is a social sculpture of 150 networked tokens. To date, ",
            LibString.toString(totalConnectionCount),
            " connections have been made."
        );
    }
}

//SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface ENS {
    // Logged when the owner of a node assigns a new owner to a subnode.
    event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);

    // Logged when the owner of a node transfers ownership to a new account.
    event Transfer(bytes32 indexed node, address owner);

    // Logged when the resolver for a node changes.
    event NewResolver(bytes32 indexed node, address resolver);

    // Logged when the TTL of a node changes
    event NewTTL(bytes32 indexed node, uint64 ttl);

    // Logged when an operator is added or removed.
    event ApprovalForAll(
        address indexed owner,
        address indexed operator,
        bool approved
    );

    function setRecord(
        bytes32 node,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeRecord(
        bytes32 node,
        bytes32 label,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeOwner(
        bytes32 node,
        bytes32 label,
        address owner
    ) external returns (bytes32);

    function setResolver(bytes32 node, address resolver) external;

    function setOwner(bytes32 node, address owner) external;

    function setTTL(bytes32 node, uint64 ttl) external;

    function setApprovalForAll(address operator, bool approved) external;

    function owner(bytes32 node) external view returns (address);

    function resolver(bytes32 node) external view returns (address);

    function ttl(bytes32 node) external view returns (uint64);

    function recordExists(bytes32 node) external view returns (bool);

    function isApprovedForAll(
        address owner,
        address operator
    ) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface INameResolver {
    event NameChanged(bytes32 indexed node, string name);

    /// Returns the name associated with an ENS node, for reverse records.
    /// Defined in EIP181.
    /// @param node The ENS node to query.
    /// @return The associated name.
    function name(bytes32 node) external view returns (string memory);
}

pragma solidity >=0.8.4;

interface IReverseRegistrar {
    function setDefaultResolver(address resolver) external;

    function claim(address owner) external returns (bytes32);

    function claimForAddr(
        address addr,
        address owner,
        address resolver
    ) external returns (bytes32);

    function claimWithResolver(
        address owner,
        address resolver
    ) external returns (bytes32);

    function setName(string memory name) external returns (bytes32);

    function setNameForAddr(
        address addr,
        address owner,
        address resolver,
        string memory name
    ) external returns (bytes32);

    function node(address addr) external pure returns (bytes32);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Simple single owner authorization mixin.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/auth/Ownable.sol)
///
/// @dev Note:
/// This implementation does NOT auto-initialize the owner to `msg.sender`.
/// You MUST call the `_initializeOwner` in the constructor / initializer.
///
/// While the ownable portion follows
/// [EIP-173](https://eips.ethereum.org/EIPS/eip-173) for compatibility,
/// the nomenclature for the 2-step ownership handover may be unique to this codebase.
abstract contract Ownable {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                       CUSTOM ERRORS                        */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The caller is not authorized to call the function.
    error Unauthorized();

    /// @dev The `newOwner` cannot be the zero address.
    error NewOwnerIsZeroAddress();

    /// @dev The `pendingOwner` does not have a valid handover request.
    error NoHandoverRequest();

    /// @dev Cannot double-initialize.
    error AlreadyInitialized();

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                           EVENTS                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The ownership is transferred from `oldOwner` to `newOwner`.
    /// This event is intentionally kept the same as OpenZeppelin's Ownable to be
    /// compatible with indexers and [EIP-173](https://eips.ethereum.org/EIPS/eip-173),
    /// despite it not being as lightweight as a single argument event.
    event OwnershipTransferred(address indexed oldOwner, address indexed newOwner);

    /// @dev An ownership handover to `pendingOwner` has been requested.
    event OwnershipHandoverRequested(address indexed pendingOwner);

    /// @dev The ownership handover to `pendingOwner` has been canceled.
    event OwnershipHandoverCanceled(address indexed pendingOwner);

    /// @dev `keccak256(bytes("OwnershipTransferred(address,address)"))`.
    uint256 private constant _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE =
        0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0;

    /// @dev `keccak256(bytes("OwnershipHandoverRequested(address)"))`.
    uint256 private constant _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE =
        0xdbf36a107da19e49527a7176a1babf963b4b0ff8cde35ee35d6cd8f1f9ac7e1d;

    /// @dev `keccak256(bytes("OwnershipHandoverCanceled(address)"))`.
    uint256 private constant _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE =
        0xfa7b8eab7da67f412cc9575ed43464468f9bfbae89d1675917346ca6d8fe3c92;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                          STORAGE                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The owner slot is given by:
    /// `bytes32(~uint256(uint32(bytes4(keccak256("_OWNER_SLOT_NOT")))))`.
    /// It is intentionally chosen to be a high value
    /// to avoid collision with lower slots.
    /// The choice of manual storage layout is to enable compatibility
    /// with both regular and upgradeable contracts.
    bytes32 internal constant _OWNER_SLOT =
        0xffffffffffffffffffffffffffffffffffffffffffffffffffffffff74873927;

    /// The ownership handover slot of `newOwner` is given by:
    /// ```
    ///     mstore(0x00, or(shl(96, user), _HANDOVER_SLOT_SEED))
    ///     let handoverSlot := keccak256(0x00, 0x20)
    /// ```
    /// It stores the expiry timestamp of the two-step ownership handover.
    uint256 private constant _HANDOVER_SLOT_SEED = 0x389a75e1;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                     INTERNAL FUNCTIONS                     */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Override to return true to make `_initializeOwner` prevent double-initialization.
    function _guardInitializeOwner() internal pure virtual returns (bool guard) {}

    /// @dev Initializes the owner directly without authorization guard.
    /// This function must be called upon initialization,
    /// regardless of whether the contract is upgradeable or not.
    /// This is to enable generalization to both regular and upgradeable contracts,
    /// and to save gas in case the initial owner is not the caller.
    /// For performance reasons, this function will not check if there
    /// is an existing owner.
    function _initializeOwner(address newOwner) internal virtual {
        if (_guardInitializeOwner()) {
            /// @solidity memory-safe-assembly
            assembly {
                let ownerSlot := _OWNER_SLOT
                if sload(ownerSlot) {
                    mstore(0x00, 0x0dc149f0) // `AlreadyInitialized()`.
                    revert(0x1c, 0x04)
                }
                // Clean the upper 96 bits.
                newOwner := shr(96, shl(96, newOwner))
                // Store the new value.
                sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner))))
                // Emit the {OwnershipTransferred} event.
                log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner)
            }
        } else {
            /// @solidity memory-safe-assembly
            assembly {
                // Clean the upper 96 bits.
                newOwner := shr(96, shl(96, newOwner))
                // Store the new value.
                sstore(_OWNER_SLOT, newOwner)
                // Emit the {OwnershipTransferred} event.
                log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner)
            }
        }
    }

    /// @dev Sets the owner directly without authorization guard.
    function _setOwner(address newOwner) internal virtual {
        if (_guardInitializeOwner()) {
            /// @solidity memory-safe-assembly
            assembly {
                let ownerSlot := _OWNER_SLOT
                // Clean the upper 96 bits.
                newOwner := shr(96, shl(96, newOwner))
                // Emit the {OwnershipTransferred} event.
                log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner)
                // Store the new value.
                sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner))))
            }
        } else {
            /// @solidity memory-safe-assembly
            assembly {
                let ownerSlot := _OWNER_SLOT
                // Clean the upper 96 bits.
                newOwner := shr(96, shl(96, newOwner))
                // Emit the {OwnershipTransferred} event.
                log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner)
                // Store the new value.
                sstore(ownerSlot, newOwner)
            }
        }
    }

    /// @dev Throws if the sender is not the owner.
    function _checkOwner() internal view virtual {
        /// @solidity memory-safe-assembly
        assembly {
            // If the caller is not the stored owner, revert.
            if iszero(eq(caller(), sload(_OWNER_SLOT))) {
                mstore(0x00, 0x82b42900) // `Unauthorized()`.
                revert(0x1c, 0x04)
            }
        }
    }

    /// @dev Returns how long a two-step ownership handover is valid for in seconds.
    /// Override to return a different value if needed.
    /// Made internal to conserve bytecode. Wrap it in a public function if needed.
    function _ownershipHandoverValidFor() internal view virtual returns (uint64) {
        return 48 * 3600;
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                  PUBLIC UPDATE FUNCTIONS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Allows the owner to transfer the ownership to `newOwner`.
    function transferOwnership(address newOwner) public payable virtual onlyOwner {
        /// @solidity memory-safe-assembly
        assembly {
            if iszero(shl(96, newOwner)) {
                mstore(0x00, 0x7448fbae) // `NewOwnerIsZeroAddress()`.
                revert(0x1c, 0x04)
            }
        }
        _setOwner(newOwner);
    }

    /// @dev Allows the owner to renounce their ownership.
    function renounceOwnership() public payable virtual onlyOwner {
        _setOwner(address(0));
    }

    /// @dev Request a two-step ownership handover to the caller.
    /// The request will automatically expire in 48 hours (172800 seconds) by default.
    function requestOwnershipHandover() public payable virtual {
        unchecked {
            uint256 expires = block.timestamp + _ownershipHandoverValidFor();
            /// @solidity memory-safe-assembly
            assembly {
                // Compute and set the handover slot to `expires`.
                mstore(0x0c, _HANDOVER_SLOT_SEED)
                mstore(0x00, caller())
                sstore(keccak256(0x0c, 0x20), expires)
                // Emit the {OwnershipHandoverRequested} event.
                log2(0, 0, _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE, caller())
            }
        }
    }

    /// @dev Cancels the two-step ownership handover to the caller, if any.
    function cancelOwnershipHandover() public payable virtual {
        /// @solidity memory-safe-assembly
        assembly {
            // Compute and set the handover slot to 0.
            mstore(0x0c, _HANDOVER_SLOT_SEED)
            mstore(0x00, caller())
            sstore(keccak256(0x0c, 0x20), 0)
            // Emit the {OwnershipHandoverCanceled} event.
            log2(0, 0, _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE, caller())
        }
    }

    /// @dev Allows the owner to complete the two-step ownership handover to `pendingOwner`.
    /// Reverts if there is no existing ownership handover requested by `pendingOwner`.
    function completeOwnershipHandover(address pendingOwner) public payable virtual onlyOwner {
        /// @solidity memory-safe-assembly
        assembly {
            // Compute and set the handover slot to 0.
            mstore(0x0c, _HANDOVER_SLOT_SEED)
            mstore(0x00, pendingOwner)
            let handoverSlot := keccak256(0x0c, 0x20)
            // If the handover does not exist, or has expired.
            if gt(timestamp(), sload(handoverSlot)) {
                mstore(0x00, 0x6f5e8818) // `NoHandoverRequest()`.
                revert(0x1c, 0x04)
            }
            // Set the handover slot to 0.
            sstore(handoverSlot, 0)
        }
        _setOwner(pendingOwner);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                   PUBLIC READ FUNCTIONS                    */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns the owner of the contract.
    function owner() public view virtual returns (address result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := sload(_OWNER_SLOT)
        }
    }

    /// @dev Returns the expiry timestamp for the two-step ownership handover to `pendingOwner`.
    function ownershipHandoverExpiresAt(address pendingOwner)
        public
        view
        virtual
        returns (uint256 result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            // Compute the handover slot.
            mstore(0x0c, _HANDOVER_SLOT_SEED)
            mstore(0x00, pendingOwner)
            // Load the handover slot.
            result := sload(keccak256(0x0c, 0x20))
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         MODIFIERS                          */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Marks a function as only callable by the owner.
    modifier onlyOwner() virtual {
        _checkOwner();
        _;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Simple ERC721 implementation with storage hitchhiking.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/tokens/ERC721.sol)
/// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC721.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/tree/master/contracts/token/ERC721/ERC721.sol)
///
/// @dev Note:
/// - The ERC721 standard allows for self-approvals.
///   For performance, this implementation WILL NOT revert for such actions.
///   Please add any checks with overrides if desired.
/// - For performance, methods are made payable where permitted by the ERC721 standard.
/// - The `safeTransfer` functions use the identity precompile (0x4)
///   to copy memory internally.
///
/// If you are overriding:
/// - NEVER violate the ERC721 invariant:
///   the balance of an owner MUST always be equal to their number of ownership slots.
///   The transfer functions do not have an underflow guard for user token balances.
/// - Make sure all variables written to storage are properly cleaned
///   (e.g. the bool value for `isApprovedForAll` MUST be either 1 or 0 under the hood).
/// - Check that the overridden function is actually used in the function you want to
///   change the behavior of. Much of the code has been manually inlined for performance.
abstract contract ERC721 {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         CONSTANTS                          */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev An account can hold up to 4294967295 tokens.
    uint256 internal constant _MAX_ACCOUNT_BALANCE = 0xffffffff;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                       CUSTOM ERRORS                        */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Only the token owner or an approved account can manage the token.
    error NotOwnerNorApproved();

    /// @dev The token does not exist.
    error TokenDoesNotExist();

    /// @dev The token already exists.
    error TokenAlreadyExists();

    /// @dev Cannot query the balance for the zero address.
    error BalanceQueryForZeroAddress();

    /// @dev Cannot mint or transfer to the zero address.
    error TransferToZeroAddress();

    /// @dev The token must be owned by `from`.
    error TransferFromIncorrectOwner();

    /// @dev The recipient's balance has overflowed.
    error AccountBalanceOverflow();

    /// @dev Cannot safely transfer to a contract that does not implement
    /// the ERC721Receiver interface.
    error TransferToNonERC721ReceiverImplementer();

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                           EVENTS                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Emitted when token `id` is transferred from `from` to `to`.
    event Transfer(address indexed from, address indexed to, uint256 indexed id);

    /// @dev Emitted when `owner` enables `account` to manage the `id` token.
    event Approval(address indexed owner, address indexed account, uint256 indexed id);

    /// @dev Emitted when `owner` enables or disables `operator` to manage all of their tokens.
    event ApprovalForAll(address indexed owner, address indexed operator, bool isApproved);

    /// @dev `keccak256(bytes("Transfer(address,address,uint256)"))`.
    uint256 private constant _TRANSFER_EVENT_SIGNATURE =
        0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;

    /// @dev `keccak256(bytes("Approval(address,address,uint256)"))`.
    uint256 private constant _APPROVAL_EVENT_SIGNATURE =
        0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925;

    /// @dev `keccak256(bytes("ApprovalForAll(address,address,bool)"))`.
    uint256 private constant _APPROVAL_FOR_ALL_EVENT_SIGNATURE =
        0x17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                          STORAGE                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The ownership data slot of `id` is given by:
    /// ```
    ///     mstore(0x00, id)
    ///     mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
    ///     let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
    /// ```
    /// Bits Layout:
    /// - [0..159]   `addr`
    /// - [160..255] `extraData`
    ///
    /// The approved address slot is given by: `add(1, ownershipSlot)`.
    ///
    /// See: https://notes.ethereum.org/%40vbuterin/verkle_tree_eip
    ///
    /// The balance slot of `owner` is given by:
    /// ```
    ///     mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
    ///     mstore(0x00, owner)
    ///     let balanceSlot := keccak256(0x0c, 0x1c)
    /// ```
    /// Bits Layout:
    /// - [0..31]   `balance`
    /// - [32..255] `aux`
    ///
    /// The `operator` approval slot of `owner` is given by:
    /// ```
    ///     mstore(0x1c, or(_ERC721_MASTER_SLOT_SEED, operator))
    ///     mstore(0x00, owner)
    ///     let operatorApprovalSlot := keccak256(0x0c, 0x30)
    /// ```
    uint256 private constant _ERC721_MASTER_SLOT_SEED = 0x7d8825530a5a2e7a << 192;

    /// @dev Pre-shifted and pre-masked constant.
    uint256 private constant _ERC721_MASTER_SLOT_SEED_MASKED = 0x0a5a2e7a00000000;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                      ERC721 METADATA                       */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns the token collection name.
    function name() public view virtual returns (string memory);

    /// @dev Returns the token collection symbol.
    function symbol() public view virtual returns (string memory);

    /// @dev Returns the Uniform Resource Identifier (URI) for token `id`.
    function tokenURI(uint256 id) public view virtual returns (string memory);

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                           ERC721                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns the owner of token `id`.
    ///
    /// Requirements:
    /// - Token `id` must exist.
    function ownerOf(uint256 id) public view virtual returns (address result) {
        result = _ownerOf(id);
        /// @solidity memory-safe-assembly
        assembly {
            if iszero(result) {
                mstore(0x00, 0xceea21b6) // `TokenDoesNotExist()`.
                revert(0x1c, 0x04)
            }
        }
    }

    /// @dev Returns the number of tokens owned by `owner`.
    ///
    /// Requirements:
    /// - `owner` must not be the zero address.
    function balanceOf(address owner) public view virtual returns (uint256 result) {
        /// @solidity memory-safe-assembly
        assembly {
            // Revert if the `owner` is the zero address.
            if iszero(owner) {
                mstore(0x00, 0x8f4eb604) // `BalanceQueryForZeroAddress()`.
                revert(0x1c, 0x04)
            }
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            mstore(0x00, owner)
            result := and(sload(keccak256(0x0c, 0x1c)), _MAX_ACCOUNT_BALANCE)
        }
    }

    /// @dev Returns the account approved to manage token `id`.
    ///
    /// Requirements:
    /// - Token `id` must exist.
    function getApproved(uint256 id) public view virtual returns (address result) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, id)
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
            if iszero(shl(96, sload(ownershipSlot))) {
                mstore(0x00, 0xceea21b6) // `TokenDoesNotExist()`.
                revert(0x1c, 0x04)
            }
            result := sload(add(1, ownershipSlot))
        }
    }

    /// @dev Sets `account` as the approved account to manage token `id`.
    ///
    /// Requirements:
    /// - Token `id` must exist.
    /// - The caller must be the owner of the token,
    ///   or an approved operator for the token owner.
    ///
    /// Emits an {Approval} event.
    function approve(address account, uint256 id) public payable virtual {
        _approve(msg.sender, account, id);
    }

    /// @dev Returns whether `operator` is approved to manage the tokens of `owner`.
    function isApprovedForAll(address owner, address operator)
        public
        view
        virtual
        returns (bool result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x1c, operator)
            mstore(0x08, _ERC721_MASTER_SLOT_SEED_MASKED)
            mstore(0x00, owner)
            result := sload(keccak256(0x0c, 0x30))
        }
    }

    /// @dev Sets whether `operator` is approved to manage the tokens of the caller.
    ///
    /// Emits an {ApprovalForAll} event.
    function setApprovalForAll(address operator, bool isApproved) public virtual {
        /// @solidity memory-safe-assembly
        assembly {
            // Convert to 0 or 1.
            isApproved := iszero(iszero(isApproved))
            // Update the `isApproved` for (`msg.sender`, `operator`).
            mstore(0x1c, operator)
            mstore(0x08, _ERC721_MASTER_SLOT_SEED_MASKED)
            mstore(0x00, caller())
            sstore(keccak256(0x0c, 0x30), isApproved)
            // Emit the {ApprovalForAll} event.
            mstore(0x00, isApproved)
            // forgefmt: disable-next-item
            log3(0x00, 0x20, _APPROVAL_FOR_ALL_EVENT_SIGNATURE, caller(), shr(96, shl(96, operator)))
        }
    }

    /// @dev Transfers token `id` from `from` to `to`.
    ///
    /// Requirements:
    ///
    /// - Token `id` must exist.
    /// - `from` must be the owner of the token.
    /// - `to` cannot be the zero address.
    /// - The caller must be the owner of the token, or be approved to manage the token.
    ///
    /// Emits a {Transfer} event.
    function transferFrom(address from, address to, uint256 id) public payable virtual {
        _beforeTokenTransfer(from, to, id);
        /// @solidity memory-safe-assembly
        assembly {
            // Clear the upper 96 bits.
            let bitmaskAddress := shr(96, not(0))
            from := and(bitmaskAddress, from)
            to := and(bitmaskAddress, to)
            // Load the ownership data.
            mstore(0x00, id)
            mstore(0x1c, or(_ERC721_MASTER_SLOT_SEED, caller()))
            let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
            let ownershipPacked := sload(ownershipSlot)
            let owner := and(bitmaskAddress, ownershipPacked)
            // Revert if the token does not exist, or if `from` is not the owner.
            if iszero(mul(owner, eq(owner, from))) {
                // `TokenDoesNotExist()`, `TransferFromIncorrectOwner()`.
                mstore(shl(2, iszero(owner)), 0xceea21b6a1148100)
                revert(0x1c, 0x04)
            }
            // Load, check, and update the token approval.
            {
                mstore(0x00, from)
                let approvedAddress := sload(add(1, ownershipSlot))
                // Revert if the caller is not the owner, nor approved.
                if iszero(or(eq(caller(), from), eq(caller(), approvedAddress))) {
                    if iszero(sload(keccak256(0x0c, 0x30))) {
                        mstore(0x00, 0x4b6e7f18) // `NotOwnerNorApproved()`.
                        revert(0x1c, 0x04)
                    }
                }
                // Delete the approved address if any.
                if approvedAddress { sstore(add(1, ownershipSlot), 0) }
            }
            // Update with the new owner.
            sstore(ownershipSlot, xor(ownershipPacked, xor(from, to)))
            // Decrement the balance of `from`.
            {
                let fromBalanceSlot := keccak256(0x0c, 0x1c)
                sstore(fromBalanceSlot, sub(sload(fromBalanceSlot), 1))
            }
            // Increment the balance of `to`.
            {
                mstore(0x00, to)
                let toBalanceSlot := keccak256(0x0c, 0x1c)
                let toBalanceSlotPacked := add(sload(toBalanceSlot), 1)
                // Revert if `to` is the zero address, or if the account balance overflows.
                if iszero(mul(to, and(toBalanceSlotPacked, _MAX_ACCOUNT_BALANCE))) {
                    // `TransferToZeroAddress()`, `AccountBalanceOverflow()`.
                    mstore(shl(2, iszero(to)), 0xea553b3401336cea)
                    revert(0x1c, 0x04)
                }
                sstore(toBalanceSlot, toBalanceSlotPacked)
            }
            // Emit the {Transfer} event.
            log4(codesize(), 0x00, _TRANSFER_EVENT_SIGNATURE, from, to, id)
        }
        _afterTokenTransfer(from, to, id);
    }

    /// @dev Equivalent to `safeTransferFrom(from, to, id, "")`.
    function safeTransferFrom(address from, address to, uint256 id) public payable virtual {
        transferFrom(from, to, id);
        if (_hasCode(to)) _checkOnERC721Received(from, to, id, "");
    }

    /// @dev Transfers token `id` from `from` to `to`.
    ///
    /// Requirements:
    ///
    /// - Token `id` must exist.
    /// - `from` must be the owner of the token.
    /// - `to` cannot be the zero address.
    /// - The caller must be the owner of the token, or be approved to manage the token.
    /// - If `to` refers to a smart contract, it must implement
    ///   {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
    ///
    /// Emits a {Transfer} event.
    function safeTransferFrom(address from, address to, uint256 id, bytes calldata data)
        public
        payable
        virtual
    {
        transferFrom(from, to, id);
        if (_hasCode(to)) _checkOnERC721Received(from, to, id, data);
    }

    /// @dev Returns true if this contract implements the interface defined by `interfaceId`.
    /// See: https://eips.ethereum.org/EIPS/eip-165
    /// This function call must use less than 30000 gas.
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            let s := shr(224, interfaceId)
            // ERC165: 0x01ffc9a7, ERC721: 0x80ac58cd, ERC721Metadata: 0x5b5e139f.
            result := or(or(eq(s, 0x01ffc9a7), eq(s, 0x80ac58cd)), eq(s, 0x5b5e139f))
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                  INTERNAL QUERY FUNCTIONS                  */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns if token `id` exists.
    function _exists(uint256 id) internal view virtual returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, id)
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            result := iszero(iszero(shl(96, sload(add(id, add(id, keccak256(0x00, 0x20)))))))
        }
    }

    /// @dev Returns the owner of token `id`.
    /// Returns the zero address instead of reverting if the token does not exist.
    function _ownerOf(uint256 id) internal view virtual returns (address result) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, id)
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            result := shr(96, shl(96, sload(add(id, add(id, keccak256(0x00, 0x20))))))
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*            INTERNAL DATA HITCHHIKING FUNCTIONS             */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    // For performance, no events are emitted for the hitchhiking setters.
    // Please emit your own events if required.

    /// @dev Returns the auxiliary data for `owner`.
    /// Minting, transferring, burning the tokens of `owner` will not change the auxiliary data.
    /// Auxiliary data can be set for any address, even if it does not have any tokens.
    function _getAux(address owner) internal view virtual returns (uint224 result) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            mstore(0x00, owner)
            result := shr(32, sload(keccak256(0x0c, 0x1c)))
        }
    }

    /// @dev Set the auxiliary data for `owner` to `value`.
    /// Minting, transferring, burning the tokens of `owner` will not change the auxiliary data.
    /// Auxiliary data can be set for any address, even if it does not have any tokens.
    function _setAux(address owner, uint224 value) internal virtual {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            mstore(0x00, owner)
            let balanceSlot := keccak256(0x0c, 0x1c)
            let packed := sload(balanceSlot)
            sstore(balanceSlot, xor(packed, shl(32, xor(value, shr(32, packed)))))
        }
    }

    /// @dev Returns the extra data for token `id`.
    /// Minting, transferring, burning a token will not change the extra data.
    /// The extra data can be set on a non-existent token.
    function _getExtraData(uint256 id) internal view virtual returns (uint96 result) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, id)
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            result := shr(160, sload(add(id, add(id, keccak256(0x00, 0x20)))))
        }
    }

    /// @dev Sets the extra data for token `id` to `value`.
    /// Minting, transferring, burning a token will not change the extra data.
    /// The extra data can be set on a non-existent token.
    function _setExtraData(uint256 id, uint96 value) internal virtual {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, id)
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
            let packed := sload(ownershipSlot)
            sstore(ownershipSlot, xor(packed, shl(160, xor(value, shr(160, packed)))))
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                  INTERNAL MINT FUNCTIONS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Mints token `id` to `to`.
    ///
    /// Requirements:
    ///
    /// - Token `id` must not exist.
    /// - `to` cannot be the zero address.
    ///
    /// Emits a {Transfer} event.
    function _mint(address to, uint256 id) internal virtual {
        _beforeTokenTransfer(address(0), to, id);
        /// @solidity memory-safe-assembly
        assembly {
            // Clear the upper 96 bits.
            to := shr(96, shl(96, to))
            // Load the ownership data.
            mstore(0x00, id)
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
            let ownershipPacked := sload(ownershipSlot)
            // Revert if the token already exists.
            if shl(96, ownershipPacked) {
                mstore(0x00, 0xc991cbb1) // `TokenAlreadyExists()`.
                revert(0x1c, 0x04)
            }
            // Update with the owner.
            sstore(ownershipSlot, or(ownershipPacked, to))
            // Increment the balance of the owner.
            {
                mstore(0x00, to)
                let balanceSlot := keccak256(0x0c, 0x1c)
                let balanceSlotPacked := add(sload(balanceSlot), 1)
                // Revert if `to` is the zero address, or if the account balance overflows.
                if iszero(mul(to, and(balanceSlotPacked, _MAX_ACCOUNT_BALANCE))) {
                    // `TransferToZeroAddress()`, `AccountBalanceOverflow()`.
                    mstore(shl(2, iszero(to)), 0xea553b3401336cea)
                    revert(0x1c, 0x04)
                }
                sstore(balanceSlot, balanceSlotPacked)
            }
            // Emit the {Transfer} event.
            log4(codesize(), 0x00, _TRANSFER_EVENT_SIGNATURE, 0, to, id)
        }
        _afterTokenTransfer(address(0), to, id);
    }

    /// @dev Mints token `id` to `to`, and updates the extra data for token `id` to `value`.
    /// Does NOT check if token `id` already exists (assumes `id` is auto-incrementing).
    ///
    /// Requirements:
    ///
    /// - `to` cannot be the zero address.
    ///
    /// Emits a {Transfer} event.
    function _mintAndSetExtraDataUnchecked(address to, uint256 id, uint96 value) internal virtual {
        _beforeTokenTransfer(address(0), to, id);
        /// @solidity memory-safe-assembly
        assembly {
            // Clear the upper 96 bits.
            to := shr(96, shl(96, to))
            // Update with the owner and extra data.
            mstore(0x00, id)
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            sstore(add(id, add(id, keccak256(0x00, 0x20))), or(shl(160, value), to))
            // Increment the balance of the owner.
            {
                mstore(0x00, to)
                let balanceSlot := keccak256(0x0c, 0x1c)
                let balanceSlotPacked := add(sload(balanceSlot), 1)
                // Revert if `to` is the zero address, or if the account balance overflows.
                if iszero(mul(to, and(balanceSlotPacked, _MAX_ACCOUNT_BALANCE))) {
                    // `TransferToZeroAddress()`, `AccountBalanceOverflow()`.
                    mstore(shl(2, iszero(to)), 0xea553b3401336cea)
                    revert(0x1c, 0x04)
                }
                sstore(balanceSlot, balanceSlotPacked)
            }
            // Emit the {Transfer} event.
            log4(codesize(), 0x00, _TRANSFER_EVENT_SIGNATURE, 0, to, id)
        }
        _afterTokenTransfer(address(0), to, id);
    }

    /// @dev Equivalent to `_safeMint(to, id, "")`.
    function _safeMint(address to, uint256 id) internal virtual {
        _safeMint(to, id, "");
    }

    /// @dev Mints token `id` to `to`.
    ///
    /// Requirements:
    ///
    /// - Token `id` must not exist.
    /// - `to` cannot be the zero address.
    /// - If `to` refers to a smart contract, it must implement
    ///   {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
    ///
    /// Emits a {Transfer} event.
    function _safeMint(address to, uint256 id, bytes memory data) internal virtual {
        _mint(to, id);
        if (_hasCode(to)) _checkOnERC721Received(address(0), to, id, data);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                  INTERNAL BURN FUNCTIONS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Equivalent to `_burn(address(0), id)`.
    function _burn(uint256 id) internal virtual {
        _burn(address(0), id);
    }

    /// @dev Destroys token `id`, using `by`.
    ///
    /// Requirements:
    ///
    /// - Token `id` must exist.
    /// - If `by` is not the zero address,
    ///   it must be the owner of the token, or be approved to manage the token.
    ///
    /// Emits a {Transfer} event.
    function _burn(address by, uint256 id) internal virtual {
        address owner = ownerOf(id);
        _beforeTokenTransfer(owner, address(0), id);
        /// @solidity memory-safe-assembly
        assembly {
            // Clear the upper 96 bits.
            by := shr(96, shl(96, by))
            // Load the ownership data.
            mstore(0x00, id)
            mstore(0x1c, or(_ERC721_MASTER_SLOT_SEED, by))
            let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
            let ownershipPacked := sload(ownershipSlot)
            // Reload the owner in case it is changed in `_beforeTokenTransfer`.
            owner := shr(96, shl(96, ownershipPacked))
            // Revert if the token does not exist.
            if iszero(owner) {
                mstore(0x00, 0xceea21b6) // `TokenDoesNotExist()`.
                revert(0x1c, 0x04)
            }
            // Load and check the token approval.
            {
                mstore(0x00, owner)
                let approvedAddress := sload(add(1, ownershipSlot))
                // If `by` is not the zero address, do the authorization check.
                // Revert if the `by` is not the owner, nor approved.
                if iszero(or(iszero(by), or(eq(by, owner), eq(by, approvedAddress)))) {
                    if iszero(sload(keccak256(0x0c, 0x30))) {
                        mstore(0x00, 0x4b6e7f18) // `NotOwnerNorApproved()`.
                        revert(0x1c, 0x04)
                    }
                }
                // Delete the approved address if any.
                if approvedAddress { sstore(add(1, ownershipSlot), 0) }
            }
            // Clear the owner.
            sstore(ownershipSlot, xor(ownershipPacked, owner))
            // Decrement the balance of `owner`.
            {
                let balanceSlot := keccak256(0x0c, 0x1c)
                sstore(balanceSlot, sub(sload(balanceSlot), 1))
            }
            // Emit the {Transfer} event.
            log4(codesize(), 0x00, _TRANSFER_EVENT_SIGNATURE, owner, 0, id)
        }
        _afterTokenTransfer(owner, address(0), id);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                INTERNAL APPROVAL FUNCTIONS                 */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns whether `account` is the owner of token `id`, or is approved to manage it.
    ///
    /// Requirements:
    /// - Token `id` must exist.
    function _isApprovedOrOwner(address account, uint256 id)
        internal
        view
        virtual
        returns (bool result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            result := 1
            // Clear the upper 96 bits.
            account := shr(96, shl(96, account))
            // Load the ownership data.
            mstore(0x00, id)
            mstore(0x1c, or(_ERC721_MASTER_SLOT_SEED, account))
            let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
            let owner := shr(96, shl(96, sload(ownershipSlot)))
            // Revert if the token does not exist.
            if iszero(owner) {
                mstore(0x00, 0xceea21b6) // `TokenDoesNotExist()`.
                revert(0x1c, 0x04)
            }
            // Check if `account` is the `owner`.
            if iszero(eq(account, owner)) {
                mstore(0x00, owner)
                // Check if `account` is approved to manage the token.
                if iszero(sload(keccak256(0x0c, 0x30))) {
                    result := eq(account, sload(add(1, ownershipSlot)))
                }
            }
        }
    }

    /// @dev Returns the account approved to manage token `id`.
    /// Returns the zero address instead of reverting if the token does not exist.
    function _getApproved(uint256 id) internal view virtual returns (address result) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, id)
            mstore(0x1c, _ERC721_MASTER_SLOT_SEED)
            result := sload(add(1, add(id, add(id, keccak256(0x00, 0x20)))))
        }
    }

    /// @dev Equivalent to `_approve(address(0), account, id)`.
    function _approve(address account, uint256 id) internal virtual {
        _approve(address(0), account, id);
    }

    /// @dev Sets `account` as the approved account to manage token `id`, using `by`.
    ///
    /// Requirements:
    /// - Token `id` must exist.
    /// - If `by` is not the zero address, `by` must be the owner
    ///   or an approved operator for the token owner.
    ///
    /// Emits a {Approval} event.
    function _approve(address by, address account, uint256 id) internal virtual {
        /// @solidity memory-safe-assembly
        assembly {
            // Clear the upper 96 bits.
            let bitmaskAddress := shr(96, not(0))
            account := and(bitmaskAddress, account)
            by := and(bitmaskAddress, by)
            // Load the owner of the token.
            mstore(0x00, id)
            mstore(0x1c, or(_ERC721_MASTER_SLOT_SEED, by))
            let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
            let owner := and(bitmaskAddress, sload(ownershipSlot))
            // Revert if the token does not exist.
            if iszero(owner) {
                mstore(0x00, 0xceea21b6) // `TokenDoesNotExist()`.
                revert(0x1c, 0x04)
            }
            // If `by` is not the zero address, do the authorization check.
            // Revert if `by` is not the owner, nor approved.
            if iszero(or(iszero(by), eq(by, owner))) {
                mstore(0x00, owner)
                if iszero(sload(keccak256(0x0c, 0x30))) {
                    mstore(0x00, 0x4b6e7f18) // `NotOwnerNorApproved()`.
                    revert(0x1c, 0x04)
                }
            }
            // Sets `account` as the approved account to manage `id`.
            sstore(add(1, ownershipSlot), account)
            // Emit the {Approval} event.
            log4(codesize(), 0x00, _APPROVAL_EVENT_SIGNATURE, owner, account, id)
        }
    }

    /// @dev Approve or remove the `operator` as an operator for `by`,
    /// without authorization checks.
    ///
    /// Emits an {ApprovalForAll} event.
    function _setApprovalForAll(address by, address operator, bool isApproved) internal virtual {
        /// @solidity memory-safe-assembly
        assembly {
            // Clear the upper 96 bits.
            by := shr(96, shl(96, by))
            operator := shr(96, shl(96, operator))
            // Convert to 0 or 1.
            isApproved := iszero(iszero(isApproved))
            // Update the `isApproved` for (`by`, `operator`).
            mstore(0x1c, or(_ERC721_MASTER_SLOT_SEED, operator))
            mstore(0x00, by)
            sstore(keccak256(0x0c, 0x30), isApproved)
            // Emit the {ApprovalForAll} event.
            mstore(0x00, isApproved)
            log3(0x00, 0x20, _APPROVAL_FOR_ALL_EVENT_SIGNATURE, by, operator)
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                INTERNAL TRANSFER FUNCTIONS                 */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Equivalent to `_transfer(address(0), from, to, id)`.
    function _transfer(address from, address to, uint256 id) internal virtual {
        _transfer(address(0), from, to, id);
    }

    /// @dev Transfers token `id` from `from` to `to`.
    ///
    /// Requirements:
    ///
    /// - Token `id` must exist.
    /// - `from` must be the owner of the token.
    /// - `to` cannot be the zero address.
    /// - If `by` is not the zero address,
    ///   it must be the owner of the token, or be approved to manage the token.
    ///
    /// Emits a {Transfer} event.
    function _transfer(address by, address from, address to, uint256 id) internal virtual {
        _beforeTokenTransfer(from, to, id);
        /// @solidity memory-safe-assembly
        assembly {
            // Clear the upper 96 bits.
            let bitmaskAddress := shr(96, not(0))
            from := and(bitmaskAddress, from)
            to := and(bitmaskAddress, to)
            by := and(bitmaskAddress, by)
            // Load the ownership data.
            mstore(0x00, id)
            mstore(0x1c, or(_ERC721_MASTER_SLOT_SEED, by))
            let ownershipSlot := add(id, add(id, keccak256(0x00, 0x20)))
            let ownershipPacked := sload(ownershipSlot)
            let owner := and(bitmaskAddress, ownershipPacked)
            // Revert if the token does not exist, or if `from` is not the owner.
            if iszero(mul(owner, eq(owner, from))) {
                // `TokenDoesNotExist()`, `TransferFromIncorrectOwner()`.
                mstore(shl(2, iszero(owner)), 0xceea21b6a1148100)
                revert(0x1c, 0x04)
            }
            // Load, check, and update the token approval.
            {
                mstore(0x00, from)
                let approvedAddress := sload(add(1, ownershipSlot))
                // If `by` is not the zero address, do the authorization check.
                // Revert if the `by` is not the owner, nor approved.
                if iszero(or(iszero(by), or(eq(by, from), eq(by, approvedAddress)))) {
                    if iszero(sload(keccak256(0x0c, 0x30))) {
                        mstore(0x00, 0x4b6e7f18) // `NotOwnerNorApproved()`.
                        revert(0x1c, 0x04)
                    }
                }
                // Delete the approved address if any.
                if approvedAddress { sstore(add(1, ownershipSlot), 0) }
            }
            // Update with the new owner.
            sstore(ownershipSlot, xor(ownershipPacked, xor(from, to)))
            // Decrement the balance of `from`.
            {
                let fromBalanceSlot := keccak256(0x0c, 0x1c)
                sstore(fromBalanceSlot, sub(sload(fromBalanceSlot), 1))
            }
            // Increment the balance of `to`.
            {
                mstore(0x00, to)
                let toBalanceSlot := keccak256(0x0c, 0x1c)
                let toBalanceSlotPacked := add(sload(toBalanceSlot), 1)
                // Revert if `to` is the zero address, or if the account balance overflows.
                if iszero(mul(to, and(toBalanceSlotPacked, _MAX_ACCOUNT_BALANCE))) {
                    // `TransferToZeroAddress()`, `AccountBalanceOverflow()`.
                    mstore(shl(2, iszero(to)), 0xea553b3401336cea)
                    revert(0x1c, 0x04)
                }
                sstore(toBalanceSlot, toBalanceSlotPacked)
            }
            // Emit the {Transfer} event.
            log4(codesize(), 0x00, _TRANSFER_EVENT_SIGNATURE, from, to, id)
        }
        _afterTokenTransfer(from, to, id);
    }

    /// @dev Equivalent to `_safeTransfer(from, to, id, "")`.
    function _safeTransfer(address from, address to, uint256 id) internal virtual {
        _safeTransfer(from, to, id, "");
    }

    /// @dev Transfers token `id` from `from` to `to`.
    ///
    /// Requirements:
    ///
    /// - Token `id` must exist.
    /// - `from` must be the owner of the token.
    /// - `to` cannot be the zero address.
    /// - The caller must be the owner of the token, or be approved to manage the token.
    /// - If `to` refers to a smart contract, it must implement
    ///   {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
    ///
    /// Emits a {Transfer} event.
    function _safeTransfer(address from, address to, uint256 id, bytes memory data)
        internal
        virtual
    {
        _transfer(address(0), from, to, id);
        if (_hasCode(to)) _checkOnERC721Received(from, to, id, data);
    }

    /// @dev Equivalent to `_safeTransfer(by, from, to, id, "")`.
    function _safeTransfer(address by, address from, address to, uint256 id) internal virtual {
        _safeTransfer(by, from, to, id, "");
    }

    /// @dev Transfers token `id` from `from` to `to`.
    ///
    /// Requirements:
    ///
    /// - Token `id` must exist.
    /// - `from` must be the owner of the token.
    /// - `to` cannot be the zero address.
    /// - If `by` is not the zero address,
    ///   it must be the owner of the token, or be approved to manage the token.
    /// - If `to` refers to a smart contract, it must implement
    ///   {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
    ///
    /// Emits a {Transfer} event.
    function _safeTransfer(address by, address from, address to, uint256 id, bytes memory data)
        internal
        virtual
    {
        _transfer(by, from, to, id);
        if (_hasCode(to)) _checkOnERC721Received(from, to, id, data);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                    HOOKS FOR OVERRIDING                    */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Hook that is called before any token transfers, including minting and burning.
    function _beforeTokenTransfer(address from, address to, uint256 id) internal virtual {}

    /// @dev Hook that is called after any token transfers, including minting and burning.
    function _afterTokenTransfer(address from, address to, uint256 id) internal virtual {}

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                      PRIVATE HELPERS                       */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns if `a` has bytecode of non-zero length.
    function _hasCode(address a) private view returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := extcodesize(a) // Can handle dirty upper bits.
        }
    }

    /// @dev Perform a call to invoke {IERC721Receiver-onERC721Received} on `to`.
    /// Reverts if the target does not support the function correctly.
    function _checkOnERC721Received(address from, address to, uint256 id, bytes memory data)
        private
    {
        /// @solidity memory-safe-assembly
        assembly {
            // Prepare the calldata.
            let m := mload(0x40)
            let onERC721ReceivedSelector := 0x150b7a02
            mstore(m, onERC721ReceivedSelector)
            mstore(add(m, 0x20), caller()) // The `operator`, which is always `msg.sender`.
            mstore(add(m, 0x40), shr(96, shl(96, from)))
            mstore(add(m, 0x60), id)
            mstore(add(m, 0x80), 0x80)
            let n := mload(data)
            mstore(add(m, 0xa0), n)
            if n { pop(staticcall(gas(), 4, add(data, 0x20), n, add(m, 0xc0), n)) }
            // Revert if the call reverts.
            if iszero(call(gas(), to, 0, add(m, 0x1c), add(n, 0xa4), m, 0x20)) {
                if returndatasize() {
                    // Bubble up the revert if the call reverts.
                    returndatacopy(m, 0x00, returndatasize())
                    revert(m, returndatasize())
                }
            }
            // Load the returndata and compare it.
            if iszero(eq(mload(m), shl(224, onERC721ReceivedSelector))) {
                mstore(0x00, 0xd1a57ed6) // `TransferToNonERC721ReceiverImplementer()`.
                revert(0x1c, 0x04)
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Library to encode strings in Base64.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/Base64.sol)
/// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/Base64.sol)
/// @author Modified from (https://github.com/Brechtpd/base64/blob/main/base64.sol) by Brecht Devos - <[email protected]>.
library Base64 {
    /// @dev Encodes `data` using the base64 encoding described in RFC 4648.
    /// See: https://datatracker.ietf.org/doc/html/rfc4648
    /// @param fileSafe  Whether to replace '+' with '-' and '/' with '_'.
    /// @param noPadding Whether to strip away the padding.
    function encode(bytes memory data, bool fileSafe, bool noPadding)
        internal
        pure
        returns (string memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let dataLength := mload(data)

            if dataLength {
                // Multiply by 4/3 rounded up.
                // The `shl(2, ...)` is equivalent to multiplying by 4.
                let encodedLength := shl(2, div(add(dataLength, 2), 3))

                // Set `result` to point to the start of the free memory.
                result := mload(0x40)

                // Store the table into the scratch space.
                // Offsetted by -1 byte so that the `mload` will load the character.
                // We will rewrite the free memory pointer at `0x40` later with
                // the allocated size.
                // The magic constant 0x0670 will turn "-_" into "+/".
                mstore(0x1f, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdef")
                mstore(0x3f, xor("ghijklmnopqrstuvwxyz0123456789-_", mul(iszero(fileSafe), 0x0670)))

                // Skip the first slot, which stores the length.
                let ptr := add(result, 0x20)
                let end := add(ptr, encodedLength)

                let dataEnd := add(add(0x20, data), dataLength)
                let dataEndValue := mload(dataEnd) // Cache the value at the `dataEnd` slot.
                mstore(dataEnd, 0x00) // Zeroize the `dataEnd` slot to clear dirty bits.

                // Run over the input, 3 bytes at a time.
                for {} 1 {} {
                    data := add(data, 3) // Advance 3 bytes.
                    let input := mload(data)

                    // Write 4 bytes. Optimized for fewer stack operations.
                    mstore8(0, mload(and(shr(18, input), 0x3F)))
                    mstore8(1, mload(and(shr(12, input), 0x3F)))
                    mstore8(2, mload(and(shr(6, input), 0x3F)))
                    mstore8(3, mload(and(input, 0x3F)))
                    mstore(ptr, mload(0x00))

                    ptr := add(ptr, 4) // Advance 4 bytes.
                    if iszero(lt(ptr, end)) { break }
                }
                mstore(dataEnd, dataEndValue) // Restore the cached value at `dataEnd`.
                mstore(0x40, add(end, 0x20)) // Allocate the memory.
                // Equivalent to `o = [0, 2, 1][dataLength % 3]`.
                let o := div(2, mod(dataLength, 3))
                // Offset `ptr` and pad with '='. We can simply write over the end.
                mstore(sub(ptr, o), shl(240, 0x3d3d))
                // Set `o` to zero if there is padding.
                o := mul(iszero(iszero(noPadding)), o)
                mstore(sub(ptr, o), 0) // Zeroize the slot after the string.
                mstore(result, sub(encodedLength, o)) // Store the length.
            }
        }
    }

    /// @dev Encodes `data` using the base64 encoding described in RFC 4648.
    /// Equivalent to `encode(data, false, false)`.
    function encode(bytes memory data) internal pure returns (string memory result) {
        result = encode(data, false, false);
    }

    /// @dev Encodes `data` using the base64 encoding described in RFC 4648.
    /// Equivalent to `encode(data, fileSafe, false)`.
    function encode(bytes memory data, bool fileSafe)
        internal
        pure
        returns (string memory result)
    {
        result = encode(data, fileSafe, false);
    }

    /// @dev Decodes base64 encoded `data`.
    ///
    /// Supports:
    /// - RFC 4648 (both standard and file-safe mode).
    /// - RFC 3501 (63: ',').
    ///
    /// Does not support:
    /// - Line breaks.
    ///
    /// Note: For performance reasons,
    /// this function will NOT revert on invalid `data` inputs.
    /// Outputs for invalid inputs will simply be undefined behaviour.
    /// It is the user's responsibility to ensure that the `data`
    /// is a valid base64 encoded string.
    function decode(string memory data) internal pure returns (bytes memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            let dataLength := mload(data)

            if dataLength {
                let decodedLength := mul(shr(2, dataLength), 3)

                for {} 1 {} {
                    // If padded.
                    if iszero(and(dataLength, 3)) {
                        let t := xor(mload(add(data, dataLength)), 0x3d3d)
                        // forgefmt: disable-next-item
                        decodedLength := sub(
                            decodedLength,
                            add(iszero(byte(30, t)), iszero(byte(31, t)))
                        )
                        break
                    }
                    // If non-padded.
                    decodedLength := add(decodedLength, sub(and(dataLength, 3), 1))
                    break
                }
                result := mload(0x40)

                // Write the length of the bytes.
                mstore(result, decodedLength)

                // Skip the first slot, which stores the length.
                let ptr := add(result, 0x20)
                let end := add(ptr, decodedLength)

                // Load the table into the scratch space.
                // Constants are optimized for smaller bytecode with zero gas overhead.
                // `m` also doubles as the mask of the upper 6 bits.
                let m := 0xfc000000fc00686c7074787c8084888c9094989ca0a4a8acb0b4b8bcc0c4c8cc
                mstore(0x5b, m)
                mstore(0x3b, 0x04080c1014181c2024282c3034383c4044484c5054585c6064)
                mstore(0x1a, 0xf8fcf800fcd0d4d8dce0e4e8ecf0f4)

                for {} 1 {} {
                    // Read 4 bytes.
                    data := add(data, 4)
                    let input := mload(data)

                    // Write 3 bytes.
                    // forgefmt: disable-next-item
                    mstore(ptr, or(
                        and(m, mload(byte(28, input))),
                        shr(6, or(
                            and(m, mload(byte(29, input))),
                            shr(6, or(
                                and(m, mload(byte(30, input))),
                                shr(6, mload(byte(31, input)))
                            ))
                        ))
                    ))
                    ptr := add(ptr, 3)
                    if iszero(lt(ptr, end)) { break }
                }
                mstore(0x40, add(end, 0x20)) // Allocate the memory.
                mstore(end, 0) // Zeroize the slot after the bytes.
                mstore(0x60, 0) // Restore the zero slot.
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Library for byte related operations.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/LibBytes.sol)
library LibBytes {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                          STRUCTS                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Goated bytes storage struct that totally MOGs, no cap, fr.
    /// Uses less gas and bytecode than Solidity's native bytes storage. It's meta af.
    /// Packs length with the first 31 bytes if <255 bytes, so it’s mad tight.
    struct BytesStorage {
        bytes32 _spacer;
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         CONSTANTS                          */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The constant returned when the `search` is not found in the bytes.
    uint256 internal constant NOT_FOUND = type(uint256).max;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                  BYTE STORAGE OPERATIONS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Sets the value of the bytes storage `$` to `s`.
    function set(BytesStorage storage $, bytes memory s) internal {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(s)
            let packed := or(0xff, shl(8, n))
            for { let i := 0 } 1 {} {
                if iszero(gt(n, 0xfe)) {
                    i := 0x1f
                    packed := or(n, shl(8, mload(add(s, i))))
                    if iszero(gt(n, i)) { break }
                }
                let o := add(s, 0x20)
                mstore(0x00, $.slot)
                for { let p := keccak256(0x00, 0x20) } 1 {} {
                    sstore(add(p, shr(5, i)), mload(add(o, i)))
                    i := add(i, 0x20)
                    if iszero(lt(i, n)) { break }
                }
                break
            }
            sstore($.slot, packed)
        }
    }

    /// @dev Sets the value of the bytes storage `$` to `s`.
    function setCalldata(BytesStorage storage $, bytes calldata s) internal {
        /// @solidity memory-safe-assembly
        assembly {
            let packed := or(0xff, shl(8, s.length))
            for { let i := 0 } 1 {} {
                if iszero(gt(s.length, 0xfe)) {
                    i := 0x1f
                    packed := or(s.length, shl(8, shr(8, calldataload(s.offset))))
                    if iszero(gt(s.length, i)) { break }
                }
                mstore(0x00, $.slot)
                for { let p := keccak256(0x00, 0x20) } 1 {} {
                    sstore(add(p, shr(5, i)), calldataload(add(s.offset, i)))
                    i := add(i, 0x20)
                    if iszero(lt(i, s.length)) { break }
                }
                break
            }
            sstore($.slot, packed)
        }
    }

    /// @dev Sets the value of the bytes storage `$` to the empty bytes.
    function clear(BytesStorage storage $) internal {
        delete $._spacer;
    }

    /// @dev Returns whether the value stored is `$` is the empty bytes "".
    function isEmpty(BytesStorage storage $) internal view returns (bool) {
        return uint256($._spacer) & 0xff == uint256(0);
    }

    /// @dev Returns the length of the value stored in `$`.
    function length(BytesStorage storage $) internal view returns (uint256 result) {
        result = uint256($._spacer);
        /// @solidity memory-safe-assembly
        assembly {
            let n := and(0xff, result)
            result := or(mul(shr(8, result), eq(0xff, n)), mul(n, iszero(eq(0xff, n))))
        }
    }

    /// @dev Returns the value stored in `$`.
    function get(BytesStorage storage $) internal view returns (bytes memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40)
            let o := add(result, 0x20)
            let packed := sload($.slot)
            let n := shr(8, packed)
            for { let i := 0 } 1 {} {
                if iszero(eq(or(packed, 0xff), packed)) {
                    mstore(o, packed)
                    n := and(0xff, packed)
                    i := 0x1f
                    if iszero(gt(n, i)) { break }
                }
                mstore(0x00, $.slot)
                for { let p := keccak256(0x00, 0x20) } 1 {} {
                    mstore(add(o, i), sload(add(p, shr(5, i))))
                    i := add(i, 0x20)
                    if iszero(lt(i, n)) { break }
                }
                break
            }
            mstore(result, n) // Store the length of the memory.
            mstore(add(o, n), 0) // Zeroize the slot after the bytes.
            mstore(0x40, add(add(o, n), 0x20)) // Allocate memory.
        }
    }

    /// @dev Returns the uint8 at index `i`. If out-of-bounds, returns 0.
    function uint8At(BytesStorage storage $, uint256 i) internal view returns (uint8 result) {
        /// @solidity memory-safe-assembly
        assembly {
            for { let packed := sload($.slot) } 1 {} {
                if iszero(eq(or(packed, 0xff), packed)) {
                    if iszero(gt(i, 0x1e)) {
                        result := byte(i, packed)
                        break
                    }
                    if iszero(gt(i, and(0xff, packed))) {
                        mstore(0x00, $.slot)
                        let j := sub(i, 0x1f)
                        result := byte(and(j, 0x1f), sload(add(keccak256(0x00, 0x20), shr(5, j))))
                    }
                    break
                }
                if iszero(gt(i, shr(8, packed))) {
                    mstore(0x00, $.slot)
                    result := byte(and(i, 0x1f), sload(add(keccak256(0x00, 0x20), shr(5, i))))
                }
                break
            }
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                      BYTES OPERATIONS                      */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns `subject` all occurrences of `needle` replaced with `replacement`.
    function replace(bytes memory subject, bytes memory needle, bytes memory replacement)
        internal
        pure
        returns (bytes memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40)
            let needleLen := mload(needle)
            let replacementLen := mload(replacement)
            let d := sub(result, subject) // Memory difference.
            let i := add(subject, 0x20) // Subject bytes pointer.
            mstore(0x00, add(i, mload(subject))) // End of subject.
            if iszero(gt(needleLen, mload(subject))) {
                let subjectSearchEnd := add(sub(mload(0x00), needleLen), 1)
                let h := 0 // The hash of `needle`.
                if iszero(lt(needleLen, 0x20)) { h := keccak256(add(needle, 0x20), needleLen) }
                let s := mload(add(needle, 0x20))
                for { let m := shl(3, sub(0x20, and(needleLen, 0x1f))) } 1 {} {
                    let t := mload(i)
                    // Whether the first `needleLen % 32` bytes of `subject` and `needle` matches.
                    if iszero(shr(m, xor(t, s))) {
                        if h {
                            if iszero(eq(keccak256(i, needleLen), h)) {
                                mstore(add(i, d), t)
                                i := add(i, 1)
                                if iszero(lt(i, subjectSearchEnd)) { break }
                                continue
                            }
                        }
                        // Copy the `replacement` one word at a time.
                        for { let j := 0 } 1 {} {
                            mstore(add(add(i, d), j), mload(add(add(replacement, 0x20), j)))
                            j := add(j, 0x20)
                            if iszero(lt(j, replacementLen)) { break }
                        }
                        d := sub(add(d, replacementLen), needleLen)
                        if needleLen {
                            i := add(i, needleLen)
                            if iszero(lt(i, subjectSearchEnd)) { break }
                            continue
                        }
                    }
                    mstore(add(i, d), t)
                    i := add(i, 1)
                    if iszero(lt(i, subjectSearchEnd)) { break }
                }
            }
            let end := mload(0x00)
            let n := add(sub(d, add(result, 0x20)), end)
            // Copy the rest of the bytes one word at a time.
            for {} lt(i, end) { i := add(i, 0x20) } { mstore(add(i, d), mload(i)) }
            let o := add(i, d)
            mstore(o, 0) // Zeroize the slot after the bytes.
            mstore(0x40, add(o, 0x20)) // Allocate memory.
            mstore(result, n) // Store the length.
        }
    }

    /// @dev Returns the byte index of the first location of `needle` in `subject`,
    /// needleing from left to right, starting from `from`.
    /// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `needle` is not found.
    function indexOf(bytes memory subject, bytes memory needle, uint256 from)
        internal
        pure
        returns (uint256 result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            result := not(0) // Initialize to `NOT_FOUND`.
            for { let subjectLen := mload(subject) } 1 {} {
                if iszero(mload(needle)) {
                    result := from
                    if iszero(gt(from, subjectLen)) { break }
                    result := subjectLen
                    break
                }
                let needleLen := mload(needle)
                let subjectStart := add(subject, 0x20)

                subject := add(subjectStart, from)
                let end := add(sub(add(subjectStart, subjectLen), needleLen), 1)
                let m := shl(3, sub(0x20, and(needleLen, 0x1f)))
                let s := mload(add(needle, 0x20))

                if iszero(and(lt(subject, end), lt(from, subjectLen))) { break }

                if iszero(lt(needleLen, 0x20)) {
                    for { let h := keccak256(add(needle, 0x20), needleLen) } 1 {} {
                        if iszero(shr(m, xor(mload(subject), s))) {
                            if eq(keccak256(subject, needleLen), h) {
                                result := sub(subject, subjectStart)
                                break
                            }
                        }
                        subject := add(subject, 1)
                        if iszero(lt(subject, end)) { break }
                    }
                    break
                }
                for {} 1 {} {
                    if iszero(shr(m, xor(mload(subject), s))) {
                        result := sub(subject, subjectStart)
                        break
                    }
                    subject := add(subject, 1)
                    if iszero(lt(subject, end)) { break }
                }
                break
            }
        }
    }

    /// @dev Returns the byte index of the first location of `needle` in `subject`,
    /// needleing from left to right.
    /// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `needle` is not found.
    function indexOf(bytes memory subject, bytes memory needle) internal pure returns (uint256) {
        return indexOf(subject, needle, 0);
    }

    /// @dev Returns the byte index of the first location of `needle` in `subject`,
    /// needleing from right to left, starting from `from`.
    /// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `needle` is not found.
    function lastIndexOf(bytes memory subject, bytes memory needle, uint256 from)
        internal
        pure
        returns (uint256 result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            for {} 1 {} {
                result := not(0) // Initialize to `NOT_FOUND`.
                let needleLen := mload(needle)
                if gt(needleLen, mload(subject)) { break }
                let w := result

                let fromMax := sub(mload(subject), needleLen)
                if iszero(gt(fromMax, from)) { from := fromMax }

                let end := add(add(subject, 0x20), w)
                subject := add(add(subject, 0x20), from)
                if iszero(gt(subject, end)) { break }
                // As this function is not too often used,
                // we shall simply use keccak256 for smaller bytecode size.
                for { let h := keccak256(add(needle, 0x20), needleLen) } 1 {} {
                    if eq(keccak256(subject, needleLen), h) {
                        result := sub(subject, add(end, 1))
                        break
                    }
                    subject := add(subject, w) // `sub(subject, 1)`.
                    if iszero(gt(subject, end)) { break }
                }
                break
            }
        }
    }

    /// @dev Returns the byte index of the first location of `needle` in `subject`,
    /// needleing from right to left.
    /// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `needle` is not found.
    function lastIndexOf(bytes memory subject, bytes memory needle)
        internal
        pure
        returns (uint256)
    {
        return lastIndexOf(subject, needle, type(uint256).max);
    }

    /// @dev Returns true if `needle` is found in `subject`, false otherwise.
    function contains(bytes memory subject, bytes memory needle) internal pure returns (bool) {
        return indexOf(subject, needle) != NOT_FOUND;
    }

    /// @dev Returns whether `subject` starts with `needle`.
    function startsWith(bytes memory subject, bytes memory needle)
        internal
        pure
        returns (bool result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(needle)
            // Just using keccak256 directly is actually cheaper.
            let t := eq(keccak256(add(subject, 0x20), n), keccak256(add(needle, 0x20), n))
            result := lt(gt(n, mload(subject)), t)
        }
    }

    /// @dev Returns whether `subject` ends with `needle`.
    function endsWith(bytes memory subject, bytes memory needle)
        internal
        pure
        returns (bool result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(needle)
            let notInRange := gt(n, mload(subject))
            // `subject + 0x20 + max(subject.length - needle.length, 0)`.
            let t := add(add(subject, 0x20), mul(iszero(notInRange), sub(mload(subject), n)))
            // Just using keccak256 directly is actually cheaper.
            result := gt(eq(keccak256(t, n), keccak256(add(needle, 0x20), n)), notInRange)
        }
    }

    /// @dev Returns `subject` repeated `times`.
    function repeat(bytes memory subject, uint256 times)
        internal
        pure
        returns (bytes memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let l := mload(subject) // Subject length.
            if iszero(or(iszero(times), iszero(l))) {
                result := mload(0x40)
                subject := add(subject, 0x20)
                let o := add(result, 0x20)
                for {} 1 {} {
                    // Copy the `subject` one word at a time.
                    for { let j := 0 } 1 {} {
                        mstore(add(o, j), mload(add(subject, j)))
                        j := add(j, 0x20)
                        if iszero(lt(j, l)) { break }
                    }
                    o := add(o, l)
                    times := sub(times, 1)
                    if iszero(times) { break }
                }
                mstore(o, 0) // Zeroize the slot after the bytes.
                mstore(0x40, add(o, 0x20)) // Allocate memory.
                mstore(result, sub(o, add(result, 0x20))) // Store the length.
            }
        }
    }

    /// @dev Returns a copy of `subject` sliced from `start` to `end` (exclusive).
    /// `start` and `end` are byte offsets.
    function slice(bytes memory subject, uint256 start, uint256 end)
        internal
        pure
        returns (bytes memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let l := mload(subject) // Subject length.
            if iszero(gt(l, end)) { end := l }
            if iszero(gt(l, start)) { start := l }
            if lt(start, end) {
                result := mload(0x40)
                let n := sub(end, start)
                let i := add(subject, start)
                let w := not(0x1f)
                // Copy the `subject` one word at a time, backwards.
                for { let j := and(add(n, 0x1f), w) } 1 {} {
                    mstore(add(result, j), mload(add(i, j)))
                    j := add(j, w) // `sub(j, 0x20)`.
                    if iszero(j) { break }
                }
                let o := add(add(result, 0x20), n)
                mstore(o, 0) // Zeroize the slot after the bytes.
                mstore(0x40, add(o, 0x20)) // Allocate memory.
                mstore(result, n) // Store the length.
            }
        }
    }

    /// @dev Returns a copy of `subject` sliced from `start` to the end of the bytes.
    /// `start` is a byte offset.
    function slice(bytes memory subject, uint256 start)
        internal
        pure
        returns (bytes memory result)
    {
        result = slice(subject, start, type(uint256).max);
    }

    /// @dev Returns a copy of `subject` sliced from `start` to `end` (exclusive).
    /// `start` and `end` are byte offsets. Faster than Solidity's native slicing.
    function sliceCalldata(bytes calldata subject, uint256 start, uint256 end)
        internal
        pure
        returns (bytes calldata result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            end := xor(end, mul(xor(end, subject.length), lt(subject.length, end)))
            start := xor(start, mul(xor(start, subject.length), lt(subject.length, start)))
            result.offset := add(subject.offset, start)
            result.length := mul(lt(start, end), sub(end, start))
        }
    }

    /// @dev Returns a copy of `subject` sliced from `start` to the end of the bytes.
    /// `start` is a byte offset. Faster than Solidity's native slicing.
    function sliceCalldata(bytes calldata subject, uint256 start)
        internal
        pure
        returns (bytes calldata result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            start := xor(start, mul(xor(start, subject.length), lt(subject.length, start)))
            result.offset := add(subject.offset, start)
            result.length := mul(lt(start, subject.length), sub(subject.length, start))
        }
    }

    /// @dev Reduces the size of `subject` to `n`.
    /// If `n` is greater than the size of `subject`, this will be a no-op.
    function truncate(bytes memory subject, uint256 n)
        internal
        pure
        returns (bytes memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            result := subject
            mstore(mul(lt(n, mload(result)), result), n)
        }
    }

    /// @dev Returns a copy of `subject`, with the length reduced to `n`.
    /// If `n` is greater than the size of `subject`, this will be a no-op.
    function truncatedCalldata(bytes calldata subject, uint256 n)
        internal
        pure
        returns (bytes calldata result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            result.offset := subject.offset
            result.length := xor(n, mul(xor(n, subject.length), lt(subject.length, n)))
        }
    }

    /// @dev Returns all the indices of `needle` in `subject`.
    /// The indices are byte offsets.
    function indicesOf(bytes memory subject, bytes memory needle)
        internal
        pure
        returns (uint256[] memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let searchLen := mload(needle)
            if iszero(gt(searchLen, mload(subject))) {
                result := mload(0x40)
                let i := add(subject, 0x20)
                let o := add(result, 0x20)
                let subjectSearchEnd := add(sub(add(i, mload(subject)), searchLen), 1)
                let h := 0 // The hash of `needle`.
                if iszero(lt(searchLen, 0x20)) { h := keccak256(add(needle, 0x20), searchLen) }
                let s := mload(add(needle, 0x20))
                for { let m := shl(3, sub(0x20, and(searchLen, 0x1f))) } 1 {} {
                    let t := mload(i)
                    // Whether the first `searchLen % 32` bytes of `subject` and `needle` matches.
                    if iszero(shr(m, xor(t, s))) {
                        if h {
                            if iszero(eq(keccak256(i, searchLen), h)) {
                                i := add(i, 1)
                                if iszero(lt(i, subjectSearchEnd)) { break }
                                continue
                            }
                        }
                        mstore(o, sub(i, add(subject, 0x20))) // Append to `result`.
                        o := add(o, 0x20)
                        i := add(i, searchLen) // Advance `i` by `searchLen`.
                        if searchLen {
                            if iszero(lt(i, subjectSearchEnd)) { break }
                            continue
                        }
                    }
                    i := add(i, 1)
                    if iszero(lt(i, subjectSearchEnd)) { break }
                }
                mstore(result, shr(5, sub(o, add(result, 0x20)))) // Store the length of `result`.
                // Allocate memory for result.
                // We allocate one more word, so this array can be recycled for {split}.
                mstore(0x40, add(o, 0x20))
            }
        }
    }

    /// @dev Returns an arrays of bytess based on the `delimiter` inside of the `subject` bytes.
    function split(bytes memory subject, bytes memory delimiter)
        internal
        pure
        returns (bytes[] memory result)
    {
        uint256[] memory indices = indicesOf(subject, delimiter);
        /// @solidity memory-safe-assembly
        assembly {
            let w := not(0x1f)
            let indexPtr := add(indices, 0x20)
            let indicesEnd := add(indexPtr, shl(5, add(mload(indices), 1)))
            mstore(add(indicesEnd, w), mload(subject))
            mstore(indices, add(mload(indices), 1))
            for { let prevIndex := 0 } 1 {} {
                let index := mload(indexPtr)
                mstore(indexPtr, 0x60)
                if iszero(eq(index, prevIndex)) {
                    let element := mload(0x40)
                    let l := sub(index, prevIndex)
                    mstore(element, l) // Store the length of the element.
                    // Copy the `subject` one word at a time, backwards.
                    for { let o := and(add(l, 0x1f), w) } 1 {} {
                        mstore(add(element, o), mload(add(add(subject, prevIndex), o)))
                        o := add(o, w) // `sub(o, 0x20)`.
                        if iszero(o) { break }
                    }
                    mstore(add(add(element, 0x20), l), 0) // Zeroize the slot after the bytes.
                    // Allocate memory for the length and the bytes, rounded up to a multiple of 32.
                    mstore(0x40, add(element, and(add(l, 0x3f), w)))
                    mstore(indexPtr, element) // Store the `element` into the array.
                }
                prevIndex := add(index, mload(delimiter))
                indexPtr := add(indexPtr, 0x20)
                if iszero(lt(indexPtr, indicesEnd)) { break }
            }
            result := indices
            if iszero(mload(delimiter)) {
                result := add(indices, 0x20)
                mstore(result, sub(mload(indices), 2))
            }
        }
    }

    /// @dev Returns a concatenated bytes of `a` and `b`.
    /// Cheaper than `bytes.concat()` and does not de-align the free memory pointer.
    function concat(bytes memory a, bytes memory b) internal pure returns (bytes memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40)
            let w := not(0x1f)
            let aLen := mload(a)
            // Copy `a` one word at a time, backwards.
            for { let o := and(add(aLen, 0x20), w) } 1 {} {
                mstore(add(result, o), mload(add(a, o)))
                o := add(o, w) // `sub(o, 0x20)`.
                if iszero(o) { break }
            }
            let bLen := mload(b)
            let output := add(result, aLen)
            // Copy `b` one word at a time, backwards.
            for { let o := and(add(bLen, 0x20), w) } 1 {} {
                mstore(add(output, o), mload(add(b, o)))
                o := add(o, w) // `sub(o, 0x20)`.
                if iszero(o) { break }
            }
            let totalLen := add(aLen, bLen)
            let last := add(add(result, 0x20), totalLen)
            mstore(last, 0) // Zeroize the slot after the bytes.
            mstore(result, totalLen) // Store the length.
            mstore(0x40, add(last, 0x20)) // Allocate memory.
        }
    }

    /// @dev Returns whether `a` equals `b`.
    function eq(bytes memory a, bytes memory b) internal pure returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := eq(keccak256(add(a, 0x20), mload(a)), keccak256(add(b, 0x20), mload(b)))
        }
    }

    /// @dev Returns whether `a` equals `b`, where `b` is a null-terminated small bytes.
    function eqs(bytes memory a, bytes32 b) internal pure returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            // These should be evaluated on compile time, as far as possible.
            let m := not(shl(7, div(not(iszero(b)), 255))) // `0x7f7f ...`.
            let x := not(or(m, or(b, add(m, and(b, m)))))
            let r := shl(7, iszero(iszero(shr(128, x))))
            r := or(r, shl(6, iszero(iszero(shr(64, shr(r, x))))))
            r := or(r, shl(5, lt(0xffffffff, shr(r, x))))
            r := or(r, shl(4, lt(0xffff, shr(r, x))))
            r := or(r, shl(3, lt(0xff, shr(r, x))))
            // forgefmt: disable-next-item
            result := gt(eq(mload(a), add(iszero(x), xor(31, shr(3, r)))),
                xor(shr(add(8, r), b), shr(add(8, r), mload(add(a, 0x20)))))
        }
    }

    /// @dev Returns 0 if `a == b`, -1 if `a < b`, +1 if `a > b`.
    /// If `a` == b[:a.length]`, and `a.length < b.length`, returns -1.
    function cmp(bytes memory a, bytes memory b) internal pure returns (int256 result) {
        /// @solidity memory-safe-assembly
        assembly {
            let aLen := mload(a)
            let bLen := mload(b)
            let n := and(xor(aLen, mul(xor(aLen, bLen), lt(bLen, aLen))), not(0x1f))
            if n {
                for { let i := 0x20 } 1 {} {
                    let x := mload(add(a, i))
                    let y := mload(add(b, i))
                    if iszero(or(xor(x, y), eq(i, n))) {
                        i := add(i, 0x20)
                        continue
                    }
                    result := sub(gt(x, y), lt(x, y))
                    break
                }
            }
            // forgefmt: disable-next-item
            if iszero(result) {
                let l := 0x201f1e1d1c1b1a191817161514131211100f0e0d0c0b0a090807060504030201
                let x := and(mload(add(add(a, 0x20), n)), shl(shl(3, byte(sub(aLen, n), l)), not(0)))
                let y := and(mload(add(add(b, 0x20), n)), shl(shl(3, byte(sub(bLen, n), l)), not(0)))
                result := sub(gt(x, y), lt(x, y))
                if iszero(result) { result := sub(gt(aLen, bLen), lt(aLen, bLen)) }
            }
        }
    }

    /// @dev Directly returns `a` without copying.
    function directReturn(bytes memory a) internal pure {
        /// @solidity memory-safe-assembly
        assembly {
            // Assumes that the bytes does not start from the scratch space.
            let retStart := sub(a, 0x20)
            let retUnpaddedSize := add(mload(a), 0x40)
            // Right pad with zeroes. Just in case the bytes is produced
            // by a method that doesn't zero right pad.
            mstore(add(retStart, retUnpaddedSize), 0)
            mstore(retStart, 0x20) // Store the return offset.
            // End the transaction, returning the bytes.
            return(retStart, and(not(0x1f), add(0x1f, retUnpaddedSize)))
        }
    }

    /// @dev Directly returns `a` with minimal copying.
    function directReturn(bytes[] memory a) internal pure {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(a) // `a.length`.
            let o := add(a, 0x20) // Start of elements in `a`.
            let u := a // Highest memory slot.
            let w := not(0x1f)
            for { let i := 0 } iszero(eq(i, n)) { i := add(i, 1) } {
                let c := add(o, shl(5, i)) // Location of pointer to `a[i]`.
                let s := mload(c) // `a[i]`.
                let l := mload(s) // `a[i].length`.
                let r := and(l, 0x1f) // `a[i].length % 32`.
                let z := add(0x20, and(l, w)) // Offset of last word in `a[i]` from `s`.
                // If `s` comes before `o`, or `s` is not zero right padded.
                if iszero(lt(lt(s, o), or(iszero(r), iszero(shl(shl(3, r), mload(add(s, z))))))) {
                    let m := mload(0x40)
                    mstore(m, l) // Copy `a[i].length`.
                    for {} 1 {} {
                        mstore(add(m, z), mload(add(s, z))) // Copy `a[i]`, backwards.
                        z := add(z, w) // `sub(z, 0x20)`.
                        if iszero(z) { break }
                    }
                    let e := add(add(m, 0x20), l)
                    mstore(e, 0) // Zeroize the slot after the copied bytes.
                    mstore(0x40, add(e, 0x20)) // Allocate memory.
                    s := m
                }
                mstore(c, sub(s, o)) // Convert to calldata offset.
                let t := add(l, add(s, 0x20))
                if iszero(lt(t, u)) { u := t }
            }
            let retStart := add(a, w) // Assumes `a` doesn't start from scratch space.
            mstore(retStart, 0x20) // Store the return offset.
            return(retStart, add(0x40, sub(u, retStart))) // End the transaction.
        }
    }

    /// @dev Returns the word at `offset`, without any bounds checks.
    function load(bytes memory a, uint256 offset) internal pure returns (bytes32 result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(add(add(a, 0x20), offset))
        }
    }

    /// @dev Returns the word at `offset`, without any bounds checks.
    function loadCalldata(bytes calldata a, uint256 offset)
        internal
        pure
        returns (bytes32 result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            result := calldataload(add(a.offset, offset))
        }
    }

    /// @dev Returns a slice representing a static struct in the calldata. Performs bounds checks.
    function staticStructInCalldata(bytes calldata a, uint256 offset)
        internal
        pure
        returns (bytes calldata result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let l := sub(a.length, 0x20)
            result.offset := add(a.offset, offset)
            result.length := sub(a.length, offset)
            if or(shr(64, or(l, a.offset)), gt(offset, l)) { revert(l, 0x00) }
        }
    }

    /// @dev Returns a slice representing a dynamic struct in the calldata. Performs bounds checks.
    function dynamicStructInCalldata(bytes calldata a, uint256 offset)
        internal
        pure
        returns (bytes calldata result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let l := sub(a.length, 0x20)
            let s := calldataload(add(a.offset, offset)) // Relative offset of `result` from `a.offset`.
            result.offset := add(a.offset, s)
            result.length := sub(a.length, s)
            if or(shr(64, or(s, or(l, a.offset))), gt(offset, l)) { revert(l, 0x00) }
        }
    }

    /// @dev Returns bytes in calldata. Performs bounds checks.
    function bytesInCalldata(bytes calldata a, uint256 offset)
        internal
        pure
        returns (bytes calldata result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let l := sub(a.length, 0x20)
            let s := calldataload(add(a.offset, offset)) // Relative offset of `result` from `a.offset`.
            result.offset := add(add(a.offset, s), 0x20)
            result.length := calldataload(add(a.offset, s))
            // forgefmt: disable-next-item
            if or(shr(64, or(result.length, or(s, or(l, a.offset)))),
                or(gt(add(s, result.length), l), gt(offset, l))) { revert(l, 0x00) }
        }
    }

    /// @dev Returns empty calldata bytes. For silencing the compiler.
    function emptyCalldata() internal pure returns (bytes calldata result) {
        /// @solidity memory-safe-assembly
        assembly {
            result.length := 0
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import {LibBytes} from "./LibBytes.sol";

/// @notice Library for converting numbers into strings and other string operations.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/LibString.sol)
/// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/LibString.sol)
///
/// @dev Note:
/// For performance and bytecode compactness, most of the string operations are restricted to
/// byte strings (7-bit ASCII), except where otherwise specified.
/// Usage of byte string operations on charsets with runes spanning two or more bytes
/// can lead to undefined behavior.
library LibString {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                          STRUCTS                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Goated string storage struct that totally MOGs, no cap, fr.
    /// Uses less gas and bytecode than Solidity's native string storage. It's meta af.
    /// Packs length with the first 31 bytes if <255 bytes, so it’s mad tight.
    struct StringStorage {
        bytes32 _spacer;
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                        CUSTOM ERRORS                       */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The length of the output is too small to contain all the hex digits.
    error HexLengthInsufficient();

    /// @dev The length of the string is more than 32 bytes.
    error TooBigForSmallString();

    /// @dev The input string must be a 7-bit ASCII.
    error StringNot7BitASCII();

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         CONSTANTS                          */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The constant returned when the `search` is not found in the string.
    uint256 internal constant NOT_FOUND = type(uint256).max;

    /// @dev Lookup for '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'.
    uint128 internal constant ALPHANUMERIC_7_BIT_ASCII = 0x7fffffe07fffffe03ff000000000000;

    /// @dev Lookup for 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'.
    uint128 internal constant LETTERS_7_BIT_ASCII = 0x7fffffe07fffffe0000000000000000;

    /// @dev Lookup for 'abcdefghijklmnopqrstuvwxyz'.
    uint128 internal constant LOWERCASE_7_BIT_ASCII = 0x7fffffe000000000000000000000000;

    /// @dev Lookup for 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
    uint128 internal constant UPPERCASE_7_BIT_ASCII = 0x7fffffe0000000000000000;

    /// @dev Lookup for '0123456789'.
    uint128 internal constant DIGITS_7_BIT_ASCII = 0x3ff000000000000;

    /// @dev Lookup for '0123456789abcdefABCDEF'.
    uint128 internal constant HEXDIGITS_7_BIT_ASCII = 0x7e0000007e03ff000000000000;

    /// @dev Lookup for '01234567'.
    uint128 internal constant OCTDIGITS_7_BIT_ASCII = 0xff000000000000;

    /// @dev Lookup for '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~ \t\n\r\x0b\x0c'.
    uint128 internal constant PRINTABLE_7_BIT_ASCII = 0x7fffffffffffffffffffffff00003e00;

    /// @dev Lookup for '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'.
    uint128 internal constant PUNCTUATION_7_BIT_ASCII = 0x78000001f8000001fc00fffe00000000;

    /// @dev Lookup for ' \t\n\r\x0b\x0c'.
    uint128 internal constant WHITESPACE_7_BIT_ASCII = 0x100003e00;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                 STRING STORAGE OPERATIONS                  */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Sets the value of the string storage `$` to `s`.
    function set(StringStorage storage $, string memory s) internal {
        LibBytes.set(bytesStorage($), bytes(s));
    }

    /// @dev Sets the value of the string storage `$` to `s`.
    function setCalldata(StringStorage storage $, string calldata s) internal {
        LibBytes.setCalldata(bytesStorage($), bytes(s));
    }

    /// @dev Sets the value of the string storage `$` to the empty string.
    function clear(StringStorage storage $) internal {
        delete $._spacer;
    }

    /// @dev Returns whether the value stored is `$` is the empty string "".
    function isEmpty(StringStorage storage $) internal view returns (bool) {
        return uint256($._spacer) & 0xff == uint256(0);
    }

    /// @dev Returns the length of the value stored in `$`.
    function length(StringStorage storage $) internal view returns (uint256) {
        return LibBytes.length(bytesStorage($));
    }

    /// @dev Returns the value stored in `$`.
    function get(StringStorage storage $) internal view returns (string memory) {
        return string(LibBytes.get(bytesStorage($)));
    }

    /// @dev Returns the uint8 at index `i`. If out-of-bounds, returns 0.
    function uint8At(StringStorage storage $, uint256 i) internal view returns (uint8) {
        return LibBytes.uint8At(bytesStorage($), i);
    }

    /// @dev Helper to cast `$` to a `BytesStorage`.
    function bytesStorage(StringStorage storage $)
        internal
        pure
        returns (LibBytes.BytesStorage storage casted)
    {
        /// @solidity memory-safe-assembly
        assembly {
            casted.slot := $.slot
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                     DECIMAL OPERATIONS                     */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns the base 10 decimal representation of `value`.
    function toString(uint256 value) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            // The maximum value of a uint256 contains 78 digits (1 byte per digit), but
            // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.
            // We will need 1 word for the trailing zeros padding, 1 word for the length,
            // and 3 words for a maximum of 78 digits.
            result := add(mload(0x40), 0x80)
            mstore(0x40, add(result, 0x20)) // Allocate memory.
            mstore(result, 0) // Zeroize the slot after the string.

            let end := result // Cache the end of the memory to calculate the length later.
            let w := not(0) // Tsk.
            // We write the string from rightmost digit to leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            for { let temp := value } 1 {} {
                result := add(result, w) // `sub(result, 1)`.
                // Store the character to the pointer.
                // The ASCII index of the '0' character is 48.
                mstore8(result, add(48, mod(temp, 10)))
                temp := div(temp, 10) // Keep dividing `temp` until zero.
                if iszero(temp) { break }
            }
            let n := sub(end, result)
            result := sub(result, 0x20) // Move the pointer 32 bytes back to make room for the length.
            mstore(result, n) // Store the length.
        }
    }

    /// @dev Returns the base 10 decimal representation of `value`.
    function toString(int256 value) internal pure returns (string memory result) {
        if (value >= 0) return toString(uint256(value));
        unchecked {
            result = toString(~uint256(value) + 1);
        }
        /// @solidity memory-safe-assembly
        assembly {
            // We still have some spare memory space on the left,
            // as we have allocated 3 words (96 bytes) for up to 78 digits.
            let n := mload(result) // Load the string length.
            mstore(result, 0x2d) // Store the '-' character.
            result := sub(result, 1) // Move back the string pointer by a byte.
            mstore(result, add(n, 1)) // Update the string length.
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                   HEXADECIMAL OPERATIONS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns the hexadecimal representation of `value`,
    /// left-padded to an input length of `byteCount` bytes.
    /// The output is prefixed with "0x" encoded using 2 hexadecimal digits per byte,
    /// giving a total length of `byteCount * 2 + 2` bytes.
    /// Reverts if `byteCount` is too small for the output to contain all the digits.
    function toHexString(uint256 value, uint256 byteCount)
        internal
        pure
        returns (string memory result)
    {
        result = toHexStringNoPrefix(value, byteCount);
        /// @solidity memory-safe-assembly
        assembly {
            let n := add(mload(result), 2) // Compute the length.
            mstore(result, 0x3078) // Store the "0x" prefix.
            result := sub(result, 2) // Move the pointer.
            mstore(result, n) // Store the length.
        }
    }

    /// @dev Returns the hexadecimal representation of `value`,
    /// left-padded to an input length of `byteCount` bytes.
    /// The output is not prefixed with "0x" and is encoded using 2 hexadecimal digits per byte,
    /// giving a total length of `byteCount * 2` bytes.
    /// Reverts if `byteCount` is too small for the output to contain all the digits.
    function toHexStringNoPrefix(uint256 value, uint256 byteCount)
        internal
        pure
        returns (string memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            // We need 0x20 bytes for the trailing zeros padding, `byteCount * 2` bytes
            // for the digits, 0x02 bytes for the prefix, and 0x20 bytes for the length.
            // We add 0x20 to the total and round down to a multiple of 0x20.
            // (0x20 + 0x20 + 0x02 + 0x20) = 0x62.
            result := add(mload(0x40), and(add(shl(1, byteCount), 0x42), not(0x1f)))
            mstore(0x40, add(result, 0x20)) // Allocate memory.
            mstore(result, 0) // Zeroize the slot after the string.

            let end := result // Cache the end to calculate the length later.
            // Store "0123456789abcdef" in scratch space.
            mstore(0x0f, 0x30313233343536373839616263646566)

            let start := sub(result, add(byteCount, byteCount))
            let w := not(1) // Tsk.
            let temp := value
            // We write the string from rightmost digit to leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            for {} 1 {} {
                result := add(result, w) // `sub(result, 2)`.
                mstore8(add(result, 1), mload(and(temp, 15)))
                mstore8(result, mload(and(shr(4, temp), 15)))
                temp := shr(8, temp)
                if iszero(xor(result, start)) { break }
            }
            if temp {
                mstore(0x00, 0x2194895a) // `HexLengthInsufficient()`.
                revert(0x1c, 0x04)
            }
            let n := sub(end, result)
            result := sub(result, 0x20)
            mstore(result, n) // Store the length.
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte.
    /// As address are 20 bytes long, the output will left-padded to have
    /// a length of `20 * 2 + 2` bytes.
    function toHexString(uint256 value) internal pure returns (string memory result) {
        result = toHexStringNoPrefix(value);
        /// @solidity memory-safe-assembly
        assembly {
            let n := add(mload(result), 2) // Compute the length.
            mstore(result, 0x3078) // Store the "0x" prefix.
            result := sub(result, 2) // Move the pointer.
            mstore(result, n) // Store the length.
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is prefixed with "0x".
    /// The output excludes leading "0" from the `toHexString` output.
    /// `0x00: "0x0", 0x01: "0x1", 0x12: "0x12", 0x123: "0x123"`.
    function toMinimalHexString(uint256 value) internal pure returns (string memory result) {
        result = toHexStringNoPrefix(value);
        /// @solidity memory-safe-assembly
        assembly {
            let o := eq(byte(0, mload(add(result, 0x20))), 0x30) // Whether leading zero is present.
            let n := add(mload(result), 2) // Compute the length.
            mstore(add(result, o), 0x3078) // Store the "0x" prefix, accounting for leading zero.
            result := sub(add(result, o), 2) // Move the pointer, accounting for leading zero.
            mstore(result, sub(n, o)) // Store the length, accounting for leading zero.
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output excludes leading "0" from the `toHexStringNoPrefix` output.
    /// `0x00: "0", 0x01: "1", 0x12: "12", 0x123: "123"`.
    function toMinimalHexStringNoPrefix(uint256 value)
        internal
        pure
        returns (string memory result)
    {
        result = toHexStringNoPrefix(value);
        /// @solidity memory-safe-assembly
        assembly {
            let o := eq(byte(0, mload(add(result, 0x20))), 0x30) // Whether leading zero is present.
            let n := mload(result) // Get the length.
            result := add(result, o) // Move the pointer, accounting for leading zero.
            mstore(result, sub(n, o)) // Store the length, accounting for leading zero.
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is encoded using 2 hexadecimal digits per byte.
    /// As address are 20 bytes long, the output will left-padded to have
    /// a length of `20 * 2` bytes.
    function toHexStringNoPrefix(uint256 value) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            // We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length,
            // 0x02 bytes for the prefix, and 0x40 bytes for the digits.
            // The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x40) is 0xa0.
            result := add(mload(0x40), 0x80)
            mstore(0x40, add(result, 0x20)) // Allocate memory.
            mstore(result, 0) // Zeroize the slot after the string.

            let end := result // Cache the end to calculate the length later.
            mstore(0x0f, 0x30313233343536373839616263646566) // Store the "0123456789abcdef" lookup.

            let w := not(1) // Tsk.
            // We write the string from rightmost digit to leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            for { let temp := value } 1 {} {
                result := add(result, w) // `sub(result, 2)`.
                mstore8(add(result, 1), mload(and(temp, 15)))
                mstore8(result, mload(and(shr(4, temp), 15)))
                temp := shr(8, temp)
                if iszero(temp) { break }
            }
            let n := sub(end, result)
            result := sub(result, 0x20)
            mstore(result, n) // Store the length.
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is prefixed with "0x", encoded using 2 hexadecimal digits per byte,
    /// and the alphabets are capitalized conditionally according to
    /// https://eips.ethereum.org/EIPS/eip-55
    function toHexStringChecksummed(address value) internal pure returns (string memory result) {
        result = toHexString(value);
        /// @solidity memory-safe-assembly
        assembly {
            let mask := shl(6, div(not(0), 255)) // `0b010000000100000000 ...`
            let o := add(result, 0x22)
            let hashed := and(keccak256(o, 40), mul(34, mask)) // `0b10001000 ... `
            let t := shl(240, 136) // `0b10001000 << 240`
            for { let i := 0 } 1 {} {
                mstore(add(i, i), mul(t, byte(i, hashed)))
                i := add(i, 1)
                if eq(i, 20) { break }
            }
            mstore(o, xor(mload(o), shr(1, and(mload(0x00), and(mload(o), mask)))))
            o := add(o, 0x20)
            mstore(o, xor(mload(o), shr(1, and(mload(0x20), and(mload(o), mask)))))
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte.
    function toHexString(address value) internal pure returns (string memory result) {
        result = toHexStringNoPrefix(value);
        /// @solidity memory-safe-assembly
        assembly {
            let n := add(mload(result), 2) // Compute the length.
            mstore(result, 0x3078) // Store the "0x" prefix.
            result := sub(result, 2) // Move the pointer.
            mstore(result, n) // Store the length.
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is encoded using 2 hexadecimal digits per byte.
    function toHexStringNoPrefix(address value) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40)
            // Allocate memory.
            // We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length,
            // 0x02 bytes for the prefix, and 0x28 bytes for the digits.
            // The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x28) is 0x80.
            mstore(0x40, add(result, 0x80))
            mstore(0x0f, 0x30313233343536373839616263646566) // Store the "0123456789abcdef" lookup.

            result := add(result, 2)
            mstore(result, 40) // Store the length.
            let o := add(result, 0x20)
            mstore(add(o, 40), 0) // Zeroize the slot after the string.
            value := shl(96, value)
            // We write the string from rightmost digit to leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            for { let i := 0 } 1 {} {
                let p := add(o, add(i, i))
                let temp := byte(i, value)
                mstore8(add(p, 1), mload(and(temp, 15)))
                mstore8(p, mload(shr(4, temp)))
                i := add(i, 1)
                if eq(i, 20) { break }
            }
        }
    }

    /// @dev Returns the hex encoded string from the raw bytes.
    /// The output is encoded using 2 hexadecimal digits per byte.
    function toHexString(bytes memory raw) internal pure returns (string memory result) {
        result = toHexStringNoPrefix(raw);
        /// @solidity memory-safe-assembly
        assembly {
            let n := add(mload(result), 2) // Compute the length.
            mstore(result, 0x3078) // Store the "0x" prefix.
            result := sub(result, 2) // Move the pointer.
            mstore(result, n) // Store the length.
        }
    }

    /// @dev Returns the hex encoded string from the raw bytes.
    /// The output is encoded using 2 hexadecimal digits per byte.
    function toHexStringNoPrefix(bytes memory raw) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(raw)
            result := add(mload(0x40), 2) // Skip 2 bytes for the optional prefix.
            mstore(result, add(n, n)) // Store the length of the output.

            mstore(0x0f, 0x30313233343536373839616263646566) // Store the "0123456789abcdef" lookup.
            let o := add(result, 0x20)
            let end := add(raw, n)
            for {} iszero(eq(raw, end)) {} {
                raw := add(raw, 1)
                mstore8(add(o, 1), mload(and(mload(raw), 15)))
                mstore8(o, mload(and(shr(4, mload(raw)), 15)))
                o := add(o, 2)
            }
            mstore(o, 0) // Zeroize the slot after the string.
            mstore(0x40, add(o, 0x20)) // Allocate memory.
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                   RUNE STRING OPERATIONS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns the number of UTF characters in the string.
    function runeCount(string memory s) internal pure returns (uint256 result) {
        /// @solidity memory-safe-assembly
        assembly {
            if mload(s) {
                mstore(0x00, div(not(0), 255))
                mstore(0x20, 0x0202020202020202020202020202020202020202020202020303030304040506)
                let o := add(s, 0x20)
                let end := add(o, mload(s))
                for { result := 1 } 1 { result := add(result, 1) } {
                    o := add(o, byte(0, mload(shr(250, mload(o)))))
                    if iszero(lt(o, end)) { break }
                }
            }
        }
    }

    /// @dev Returns if this string is a 7-bit ASCII string.
    /// (i.e. all characters codes are in [0..127])
    function is7BitASCII(string memory s) internal pure returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := 1
            let mask := shl(7, div(not(0), 255))
            let n := mload(s)
            if n {
                let o := add(s, 0x20)
                let end := add(o, n)
                let last := mload(end)
                mstore(end, 0)
                for {} 1 {} {
                    if and(mask, mload(o)) {
                        result := 0
                        break
                    }
                    o := add(o, 0x20)
                    if iszero(lt(o, end)) { break }
                }
                mstore(end, last)
            }
        }
    }

    /// @dev Returns if this string is a 7-bit ASCII string,
    /// AND all characters are in the `allowed` lookup.
    /// Note: If `s` is empty, returns true regardless of `allowed`.
    function is7BitASCII(string memory s, uint128 allowed) internal pure returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := 1
            if mload(s) {
                let allowed_ := shr(128, shl(128, allowed))
                let o := add(s, 0x20)
                for { let end := add(o, mload(s)) } 1 {} {
                    result := and(result, shr(byte(0, mload(o)), allowed_))
                    o := add(o, 1)
                    if iszero(and(result, lt(o, end))) { break }
                }
            }
        }
    }

    /// @dev Converts the bytes in the 7-bit ASCII string `s` to
    /// an allowed lookup for use in `is7BitASCII(s, allowed)`.
    /// To save runtime gas, you can cache the result in an immutable variable.
    function to7BitASCIIAllowedLookup(string memory s) internal pure returns (uint128 result) {
        /// @solidity memory-safe-assembly
        assembly {
            if mload(s) {
                let o := add(s, 0x20)
                for { let end := add(o, mload(s)) } 1 {} {
                    result := or(result, shl(byte(0, mload(o)), 1))
                    o := add(o, 1)
                    if iszero(lt(o, end)) { break }
                }
                if shr(128, result) {
                    mstore(0x00, 0xc9807e0d) // `StringNot7BitASCII()`.
                    revert(0x1c, 0x04)
                }
            }
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                   BYTE STRING OPERATIONS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    // For performance and bytecode compactness, byte string operations are restricted
    // to 7-bit ASCII strings. All offsets are byte offsets, not UTF character offsets.
    // Usage of byte string operations on charsets with runes spanning two or more bytes
    // can lead to undefined behavior.

    /// @dev Returns `subject` all occurrences of `needle` replaced with `replacement`.
    function replace(string memory subject, string memory needle, string memory replacement)
        internal
        pure
        returns (string memory)
    {
        return string(LibBytes.replace(bytes(subject), bytes(needle), bytes(replacement)));
    }

    /// @dev Returns the byte index of the first location of `needle` in `subject`,
    /// needleing from left to right, starting from `from`.
    /// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `needle` is not found.
    function indexOf(string memory subject, string memory needle, uint256 from)
        internal
        pure
        returns (uint256)
    {
        return LibBytes.indexOf(bytes(subject), bytes(needle), from);
    }

    /// @dev Returns the byte index of the first location of `needle` in `subject`,
    /// needleing from left to right.
    /// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `needle` is not found.
    function indexOf(string memory subject, string memory needle) internal pure returns (uint256) {
        return LibBytes.indexOf(bytes(subject), bytes(needle), 0);
    }

    /// @dev Returns the byte index of the first location of `needle` in `subject`,
    /// needleing from right to left, starting from `from`.
    /// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `needle` is not found.
    function lastIndexOf(string memory subject, string memory needle, uint256 from)
        internal
        pure
        returns (uint256)
    {
        return LibBytes.lastIndexOf(bytes(subject), bytes(needle), from);
    }

    /// @dev Returns the byte index of the first location of `needle` in `subject`,
    /// needleing from right to left.
    /// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `needle` is not found.
    function lastIndexOf(string memory subject, string memory needle)
        internal
        pure
        returns (uint256)
    {
        return LibBytes.lastIndexOf(bytes(subject), bytes(needle), type(uint256).max);
    }

    /// @dev Returns true if `needle` is found in `subject`, false otherwise.
    function contains(string memory subject, string memory needle) internal pure returns (bool) {
        return LibBytes.contains(bytes(subject), bytes(needle));
    }

    /// @dev Returns whether `subject` starts with `needle`.
    function startsWith(string memory subject, string memory needle) internal pure returns (bool) {
        return LibBytes.startsWith(bytes(subject), bytes(needle));
    }

    /// @dev Returns whether `subject` ends with `needle`.
    function endsWith(string memory subject, string memory needle) internal pure returns (bool) {
        return LibBytes.endsWith(bytes(subject), bytes(needle));
    }

    /// @dev Returns `subject` repeated `times`.
    function repeat(string memory subject, uint256 times) internal pure returns (string memory) {
        return string(LibBytes.repeat(bytes(subject), times));
    }

    /// @dev Returns a copy of `subject` sliced from `start` to `end` (exclusive).
    /// `start` and `end` are byte offsets.
    function slice(string memory subject, uint256 start, uint256 end)
        internal
        pure
        returns (string memory)
    {
        return string(LibBytes.slice(bytes(subject), start, end));
    }

    /// @dev Returns a copy of `subject` sliced from `start` to the end of the string.
    /// `start` is a byte offset.
    function slice(string memory subject, uint256 start) internal pure returns (string memory) {
        return string(LibBytes.slice(bytes(subject), start, type(uint256).max));
    }

    /// @dev Returns all the indices of `needle` in `subject`.
    /// The indices are byte offsets.
    function indicesOf(string memory subject, string memory needle)
        internal
        pure
        returns (uint256[] memory)
    {
        return LibBytes.indicesOf(bytes(subject), bytes(needle));
    }

    /// @dev Returns an arrays of strings based on the `delimiter` inside of the `subject` string.
    function split(string memory subject, string memory delimiter)
        internal
        pure
        returns (string[] memory result)
    {
        bytes[] memory a = LibBytes.split(bytes(subject), bytes(delimiter));
        /// @solidity memory-safe-assembly
        assembly {
            result := a
        }
    }

    /// @dev Returns a concatenated string of `a` and `b`.
    /// Cheaper than `string.concat()` and does not de-align the free memory pointer.
    function concat(string memory a, string memory b) internal pure returns (string memory) {
        return string(LibBytes.concat(bytes(a), bytes(b)));
    }

    /// @dev Returns a copy of the string in either lowercase or UPPERCASE.
    /// WARNING! This function is only compatible with 7-bit ASCII strings.
    function toCase(string memory subject, bool toUpper)
        internal
        pure
        returns (string memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(subject)
            if n {
                result := mload(0x40)
                let o := add(result, 0x20)
                let d := sub(subject, result)
                let flags := shl(add(70, shl(5, toUpper)), 0x3ffffff)
                for { let end := add(o, n) } 1 {} {
                    let b := byte(0, mload(add(d, o)))
                    mstore8(o, xor(and(shr(b, flags), 0x20), b))
                    o := add(o, 1)
                    if eq(o, end) { break }
                }
                mstore(result, n) // Store the length.
                mstore(o, 0) // Zeroize the slot after the string.
                mstore(0x40, add(o, 0x20)) // Allocate memory.
            }
        }
    }

    /// @dev Returns a string from a small bytes32 string.
    /// `s` must be null-terminated, or behavior will be undefined.
    function fromSmallString(bytes32 s) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40)
            let n := 0
            for {} byte(n, s) { n := add(n, 1) } {} // Scan for '\0'.
            mstore(result, n) // Store the length.
            let o := add(result, 0x20)
            mstore(o, s) // Store the bytes of the string.
            mstore(add(o, n), 0) // Zeroize the slot after the string.
            mstore(0x40, add(result, 0x40)) // Allocate memory.
        }
    }

    /// @dev Returns the small string, with all bytes after the first null byte zeroized.
    function normalizeSmallString(bytes32 s) internal pure returns (bytes32 result) {
        /// @solidity memory-safe-assembly
        assembly {
            for {} byte(result, s) { result := add(result, 1) } {} // Scan for '\0'.
            mstore(0x00, s)
            mstore(result, 0x00)
            result := mload(0x00)
        }
    }

    /// @dev Returns the string as a normalized null-terminated small string.
    function toSmallString(string memory s) internal pure returns (bytes32 result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(s)
            if iszero(lt(result, 33)) {
                mstore(0x00, 0xec92f9a3) // `TooBigForSmallString()`.
                revert(0x1c, 0x04)
            }
            result := shl(shl(3, sub(32, result)), mload(add(s, result)))
        }
    }

    /// @dev Returns a lowercased copy of the string.
    /// WARNING! This function is only compatible with 7-bit ASCII strings.
    function lower(string memory subject) internal pure returns (string memory result) {
        result = toCase(subject, false);
    }

    /// @dev Returns an UPPERCASED copy of the string.
    /// WARNING! This function is only compatible with 7-bit ASCII strings.
    function upper(string memory subject) internal pure returns (string memory result) {
        result = toCase(subject, true);
    }

    /// @dev Escapes the string to be used within HTML tags.
    function escapeHTML(string memory s) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40)
            let end := add(s, mload(s))
            let o := add(result, 0x20)
            // Store the bytes of the packed offsets and strides into the scratch space.
            // `packed = (stride << 5) | offset`. Max offset is 20. Max stride is 6.
            mstore(0x1f, 0x900094)
            mstore(0x08, 0xc0000000a6ab)
            // Store "&quot;&amp;&#39;&lt;&gt;" into the scratch space.
            mstore(0x00, shl(64, 0x2671756f743b26616d703b262333393b266c743b2667743b))
            for {} iszero(eq(s, end)) {} {
                s := add(s, 1)
                let c := and(mload(s), 0xff)
                // Not in `["\"","'","&","<",">"]`.
                if iszero(and(shl(c, 1), 0x500000c400000000)) {
                    mstore8(o, c)
                    o := add(o, 1)
                    continue
                }
                let t := shr(248, mload(c))
                mstore(o, mload(and(t, 0x1f)))
                o := add(o, shr(5, t))
            }
            mstore(o, 0) // Zeroize the slot after the string.
            mstore(result, sub(o, add(result, 0x20))) // Store the length.
            mstore(0x40, add(o, 0x20)) // Allocate memory.
        }
    }

    /// @dev Escapes the string to be used within double-quotes in a JSON.
    /// If `addDoubleQuotes` is true, the result will be enclosed in double-quotes.
    function escapeJSON(string memory s, bool addDoubleQuotes)
        internal
        pure
        returns (string memory result)
    {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40)
            let o := add(result, 0x20)
            if addDoubleQuotes {
                mstore8(o, 34)
                o := add(1, o)
            }
            // Store "\\u0000" in scratch space.
            // Store "0123456789abcdef" in scratch space.
            // Also, store `{0x08:"b", 0x09:"t", 0x0a:"n", 0x0c:"f", 0x0d:"r"}`.
            // into the scratch space.
            mstore(0x15, 0x5c75303030303031323334353637383961626364656662746e006672)
            // Bitmask for detecting `["\"","\\"]`.
            let e := or(shl(0x22, 1), shl(0x5c, 1))
            for { let end := add(s, mload(s)) } iszero(eq(s, end)) {} {
                s := add(s, 1)
                let c := and(mload(s), 0xff)
                if iszero(lt(c, 0x20)) {
                    if iszero(and(shl(c, 1), e)) {
                        // Not in `["\"","\\"]`.
                        mstore8(o, c)
                        o := add(o, 1)
                        continue
                    }
                    mstore8(o, 0x5c) // "\\".
                    mstore8(add(o, 1), c)
                    o := add(o, 2)
                    continue
                }
                if iszero(and(shl(c, 1), 0x3700)) {
                    // Not in `["\b","\t","\n","\f","\d"]`.
                    mstore8(0x1d, mload(shr(4, c))) // Hex value.
                    mstore8(0x1e, mload(and(c, 15))) // Hex value.
                    mstore(o, mload(0x19)) // "\\u00XX".
                    o := add(o, 6)
                    continue
                }
                mstore8(o, 0x5c) // "\\".
                mstore8(add(o, 1), mload(add(c, 8)))
                o := add(o, 2)
            }
            if addDoubleQuotes {
                mstore8(o, 34)
                o := add(1, o)
            }
            mstore(o, 0) // Zeroize the slot after the string.
            mstore(result, sub(o, add(result, 0x20))) // Store the length.
            mstore(0x40, add(o, 0x20)) // Allocate memory.
        }
    }

    /// @dev Escapes the string to be used within double-quotes in a JSON.
    function escapeJSON(string memory s) internal pure returns (string memory result) {
        result = escapeJSON(s, false);
    }

    /// @dev Encodes `s` so that it can be safely used in a URI,
    /// just like `encodeURIComponent` in JavaScript.
    /// See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
    /// See: https://datatracker.ietf.org/doc/html/rfc2396
    /// See: https://datatracker.ietf.org/doc/html/rfc3986
    function encodeURIComponent(string memory s) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40)
            // Store "0123456789ABCDEF" in scratch space.
            // Uppercased to be consistent with JavaScript's implementation.
            mstore(0x0f, 0x30313233343536373839414243444546)
            let o := add(result, 0x20)
            for { let end := add(s, mload(s)) } iszero(eq(s, end)) {} {
                s := add(s, 1)
                let c := and(mload(s), 0xff)
                // If not in `[0-9A-Z-a-z-_.!~*'()]`.
                if iszero(and(1, shr(c, 0x47fffffe87fffffe03ff678200000000))) {
                    mstore8(o, 0x25) // '%'.
                    mstore8(add(o, 1), mload(and(shr(4, c), 15)))
                    mstore8(add(o, 2), mload(and(c, 15)))
                    o := add(o, 3)
                    continue
                }
                mstore8(o, c)
                o := add(o, 1)
            }
            mstore(result, sub(o, add(result, 0x20))) // Store the length.
            mstore(o, 0) // Zeroize the slot after the string.
            mstore(0x40, add(o, 0x20)) // Allocate memory.
        }
    }

    /// @dev Returns whether `a` equals `b`.
    function eq(string memory a, string memory b) internal pure returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := eq(keccak256(add(a, 0x20), mload(a)), keccak256(add(b, 0x20), mload(b)))
        }
    }

    /// @dev Returns whether `a` equals `b`, where `b` is a null-terminated small string.
    function eqs(string memory a, bytes32 b) internal pure returns (bool result) {
        /// @solidity memory-safe-assembly
        assembly {
            // These should be evaluated on compile time, as far as possible.
            let m := not(shl(7, div(not(iszero(b)), 255))) // `0x7f7f ...`.
            let x := not(or(m, or(b, add(m, and(b, m)))))
            let r := shl(7, iszero(iszero(shr(128, x))))
            r := or(r, shl(6, iszero(iszero(shr(64, shr(r, x))))))
            r := or(r, shl(5, lt(0xffffffff, shr(r, x))))
            r := or(r, shl(4, lt(0xffff, shr(r, x))))
            r := or(r, shl(3, lt(0xff, shr(r, x))))
            // forgefmt: disable-next-item
            result := gt(eq(mload(a), add(iszero(x), xor(31, shr(3, r)))),
                xor(shr(add(8, r), b), shr(add(8, r), mload(add(a, 0x20)))))
        }
    }

    /// @dev Returns 0 if `a == b`, -1 if `a < b`, +1 if `a > b`.
    /// If `a` == b[:a.length]`, and `a.length < b.length`, returns -1.
    function cmp(string memory a, string memory b) internal pure returns (int256) {
        return LibBytes.cmp(bytes(a), bytes(b));
    }

    /// @dev Packs a single string with its length into a single word.
    /// Returns `bytes32(0)` if the length is zero or greater than 31.
    function packOne(string memory a) internal pure returns (bytes32 result) {
        /// @solidity memory-safe-assembly
        assembly {
            // We don't need to zero right pad the string,
            // since this is our own custom non-standard packing scheme.
            result :=
                mul(
                    // Load the length and the bytes.
                    mload(add(a, 0x1f)),
                    // `length != 0 && length < 32`. Abuses underflow.
                    // Assumes that the length is valid and within the block gas limit.
                    lt(sub(mload(a), 1), 0x1f)
                )
        }
    }

    /// @dev Unpacks a string packed using {packOne}.
    /// Returns the empty string if `packed` is `bytes32(0)`.
    /// If `packed` is not an output of {packOne}, the output behavior is undefined.
    function unpackOne(bytes32 packed) internal pure returns (string memory result) {
        /// @solidity memory-safe-assembly
        assembly {
            result := mload(0x40) // Grab the free memory pointer.
            mstore(0x40, add(result, 0x40)) // Allocate 2 words (1 for the length, 1 for the bytes).
            mstore(result, 0) // Zeroize the length slot.
            mstore(add(result, 0x1f), packed) // Store the length and bytes.
            mstore(add(add(result, 0x20), mload(result)), 0) // Right pad with zeroes.
        }
    }

    /// @dev Packs two strings with their lengths into a single word.
    /// Returns `bytes32(0)` if combined length is zero or greater than 30.
    function packTwo(string memory a, string memory b) internal pure returns (bytes32 result) {
        /// @solidity memory-safe-assembly
        assembly {
            let aLen := mload(a)
            // We don't need to zero right pad the strings,
            // since this is our own custom non-standard packing scheme.
            result :=
                mul(
                    or( // Load the length and the bytes of `a` and `b`.
                    shl(shl(3, sub(0x1f, aLen)), mload(add(a, aLen))), mload(sub(add(b, 0x1e), aLen))),
                    // `totalLen != 0 && totalLen < 31`. Abuses underflow.
                    // Assumes that the lengths are valid and within the block gas limit.
                    lt(sub(add(aLen, mload(b)), 1), 0x1e)
                )
        }
    }

    /// @dev Unpacks strings packed using {packTwo}.
    /// Returns the empty strings if `packed` is `bytes32(0)`.
    /// If `packed` is not an output of {packTwo}, the output behavior is undefined.
    function unpackTwo(bytes32 packed)
        internal
        pure
        returns (string memory resultA, string memory resultB)
    {
        /// @solidity memory-safe-assembly
        assembly {
            resultA := mload(0x40) // Grab the free memory pointer.
            resultB := add(resultA, 0x40)
            // Allocate 2 words for each string (1 for the length, 1 for the byte). Total 4 words.
            mstore(0x40, add(resultB, 0x40))
            // Zeroize the length slots.
            mstore(resultA, 0)
            mstore(resultB, 0)
            // Store the lengths and bytes.
            mstore(add(resultA, 0x1f), packed)
            mstore(add(resultB, 0x1f), mload(add(add(resultA, 0x20), mload(resultA))))
            // Right pad with zeroes.
            mstore(add(add(resultA, 0x20), mload(resultA)), 0)
            mstore(add(add(resultB, 0x20), mload(resultB)), 0)
        }
    }

    /// @dev Directly returns `a` without copying.
    function directReturn(string memory a) internal pure {
        /// @solidity memory-safe-assembly
        assembly {
            // Assumes that the string does not start from the scratch space.
            let retStart := sub(a, 0x20)
            let retUnpaddedSize := add(mload(a), 0x40)
            // Right pad with zeroes. Just in case the string is produced
            // by a method that doesn't zero right pad.
            mstore(add(retStart, retUnpaddedSize), 0)
            mstore(retStart, 0x20) // Store the return offset.
            // End the transaction, returning the string.
            return(retStart, and(not(0x1f), add(0x1f, retUnpaddedSize)))
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Gas optimized verification of proof of inclusion for a leaf in a Merkle tree.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/MerkleProofLib.sol)
/// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/MerkleProofLib.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/cryptography/MerkleProof.sol)
library MerkleProofLib {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*            MERKLE PROOF VERIFICATION OPERATIONS            */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns whether `leaf` exists in the Merkle tree with `root`, given `proof`.
    function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf)
        internal
        pure
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            if mload(proof) {
                // Initialize `offset` to the offset of `proof` elements in memory.
                let offset := add(proof, 0x20)
                // Left shift by 5 is equivalent to multiplying by 0x20.
                let end := add(offset, shl(5, mload(proof)))
                // Iterate over proof elements to compute root hash.
                for {} 1 {} {
                    // Slot of `leaf` in scratch space.
                    // If the condition is true: 0x20, otherwise: 0x00.
                    let scratch := shl(5, gt(leaf, mload(offset)))
                    // Store elements to hash contiguously in scratch space.
                    // Scratch space is 64 bytes (0x00 - 0x3f) and both elements are 32 bytes.
                    mstore(scratch, leaf)
                    mstore(xor(scratch, 0x20), mload(offset))
                    // Reuse `leaf` to store the hash to reduce stack operations.
                    leaf := keccak256(0x00, 0x40)
                    offset := add(offset, 0x20)
                    if iszero(lt(offset, end)) { break }
                }
            }
            isValid := eq(leaf, root)
        }
    }

    /// @dev Returns whether `leaf` exists in the Merkle tree with `root`, given `proof`.
    function verifyCalldata(bytes32[] calldata proof, bytes32 root, bytes32 leaf)
        internal
        pure
        returns (bool isValid)
    {
        /// @solidity memory-safe-assembly
        assembly {
            if proof.length {
                // Left shift by 5 is equivalent to multiplying by 0x20.
                let end := add(proof.offset, shl(5, proof.length))
                // Initialize `offset` to the offset of `proof` in the calldata.
                let offset := proof.offset
                // Iterate over proof elements to compute root hash.
                for {} 1 {} {
                    // Slot of `leaf` in scratch space.
                    // If the condition is true: 0x20, otherwise: 0x00.
                    let scratch := shl(5, gt(leaf, calldataload(offset)))
                    // Store elements to hash contiguously in scratch space.
                    // Scratch space is 64 bytes (0x00 - 0x3f) and both elements are 32 bytes.
                    mstore(scratch, leaf)
                    mstore(xor(scratch, 0x20), calldataload(offset))
                    // Reuse `leaf` to store the hash to reduce stack operations.
                    leaf := keccak256(0x00, 0x40)
                    offset := add(offset, 0x20)
                    if iszero(lt(offset, end)) { break }
                }
            }
            isValid := eq(leaf, root)
        }
    }

    /// @dev Returns whether all `leaves` exist in the Merkle tree with `root`,
    /// given `proof` and `flags`.
    ///
    /// Note:
    /// - Breaking the invariant `flags.length == (leaves.length - 1) + proof.length`
    ///   will always return false.
    /// - The sum of the lengths of `proof` and `leaves` must never overflow.
    /// - Any non-zero word in the `flags` array is treated as true.
    /// - The memory offset of `proof` must be non-zero
    ///   (i.e. `proof` is not pointing to the scratch space).
    function verifyMultiProof(
        bytes32[] memory proof,
        bytes32 root,
        bytes32[] memory leaves,
        bool[] memory flags
    ) internal pure returns (bool isValid) {
        // Rebuilds the root by consuming and producing values on a queue.
        // The queue starts with the `leaves` array, and goes into a `hashes` array.
        // After the process, the last element on the queue is verified
        // to be equal to the `root`.
        //
        // The `flags` array denotes whether the sibling
        // should be popped from the queue (`flag == true`), or
        // should be popped from the `proof` (`flag == false`).
        /// @solidity memory-safe-assembly
        assembly {
            // Cache the lengths of the arrays.
            let leavesLength := mload(leaves)
            let proofLength := mload(proof)
            let flagsLength := mload(flags)

            // Advance the pointers of the arrays to point to the data.
            leaves := add(0x20, leaves)
            proof := add(0x20, proof)
            flags := add(0x20, flags)

            // If the number of flags is correct.
            for {} eq(add(leavesLength, proofLength), add(flagsLength, 1)) {} {
                // For the case where `proof.length + leaves.length == 1`.
                if iszero(flagsLength) {
                    // `isValid = (proof.length == 1 ? proof[0] : leaves[0]) == root`.
                    isValid := eq(mload(xor(leaves, mul(xor(proof, leaves), proofLength))), root)
                    break
                }

                // The required final proof offset if `flagsLength` is not zero, otherwise zero.
                let proofEnd := add(proof, shl(5, proofLength))
                // We can use the free memory space for the queue.
                // We don't need to allocate, since the queue is temporary.
                let hashesFront := mload(0x40)
                // Copy the leaves into the hashes.
                // Sometimes, a little memory expansion costs less than branching.
                // Should cost less, even with a high free memory offset of 0x7d00.
                leavesLength := shl(5, leavesLength)
                for { let i := 0 } iszero(eq(i, leavesLength)) { i := add(i, 0x20) } {
                    mstore(add(hashesFront, i), mload(add(leaves, i)))
                }
                // Compute the back of the hashes.
                let hashesBack := add(hashesFront, leavesLength)
                // This is the end of the memory for the queue.
                // We recycle `flagsLength` to save on stack variables (sometimes save gas).
                flagsLength := add(hashesBack, shl(5, flagsLength))

                for {} 1 {} {
                    // Pop from `hashes`.
                    let a := mload(hashesFront)
                    // Pop from `hashes`.
                    let b := mload(add(hashesFront, 0x20))
                    hashesFront := add(hashesFront, 0x40)

                    // If the flag is false, load the next proof,
                    // else, pops from the queue.
                    if iszero(mload(flags)) {
                        // Loads the next proof.
                        b := mload(proof)
                        proof := add(proof, 0x20)
                        // Unpop from `hashes`.
                        hashesFront := sub(hashesFront, 0x20)
                    }

                    // Advance to the next flag.
                    flags := add(flags, 0x20)

                    // Slot of `a` in scratch space.
                    // If the condition is true: 0x20, otherwise: 0x00.
                    let scratch := shl(5, gt(a, b))
                    // Hash the scratch space and push the result onto the queue.
                    mstore(scratch, a)
                    mstore(xor(scratch, 0x20), b)
                    mstore(hashesBack, keccak256(0x00, 0x40))
                    hashesBack := add(hashesBack, 0x20)
                    if iszero(lt(hashesBack, flagsLength)) { break }
                }
                isValid :=
                    and(
                        // Checks if the last value in the queue is same as the root.
                        eq(mload(sub(hashesBack, 0x20)), root),
                        // And whether all the proofs are used, if required.
                        eq(proofEnd, proof)
                    )
                break
            }
        }
    }

    /// @dev Returns whether all `leaves` exist in the Merkle tree with `root`,
    /// given `proof` and `flags`.
    ///
    /// Note:
    /// - Breaking the invariant `flags.length == (leaves.length - 1) + proof.length`
    ///   will always return false.
    /// - Any non-zero word in the `flags` array is treated as true.
    /// - The calldata offset of `proof` must be non-zero
    ///   (i.e. `proof` is from a regular Solidity function with a 4-byte selector).
    function verifyMultiProofCalldata(
        bytes32[] calldata proof,
        bytes32 root,
        bytes32[] calldata leaves,
        bool[] calldata flags
    ) internal pure returns (bool isValid) {
        // Rebuilds the root by consuming and producing values on a queue.
        // The queue starts with the `leaves` array, and goes into a `hashes` array.
        // After the process, the last element on the queue is verified
        // to be equal to the `root`.
        //
        // The `flags` array denotes whether the sibling
        // should be popped from the queue (`flag == true`), or
        // should be popped from the `proof` (`flag == false`).
        /// @solidity memory-safe-assembly
        assembly {
            // If the number of flags is correct.
            for {} eq(add(leaves.length, proof.length), add(flags.length, 1)) {} {
                // For the case where `proof.length + leaves.length == 1`.
                if iszero(flags.length) {
                    // `isValid = (proof.length == 1 ? proof[0] : leaves[0]) == root`.
                    // forgefmt: disable-next-item
                    isValid := eq(
                        calldataload(
                            xor(leaves.offset, mul(xor(proof.offset, leaves.offset), proof.length))
                        ),
                        root
                    )
                    break
                }

                // The required final proof offset if `flagsLength` is not zero, otherwise zero.
                let proofEnd := add(proof.offset, shl(5, proof.length))
                // We can use the free memory space for the queue.
                // We don't need to allocate, since the queue is temporary.
                let hashesFront := mload(0x40)
                // Copy the leaves into the hashes.
                // Sometimes, a little memory expansion costs less than branching.
                // Should cost less, even with a high free memory offset of 0x7d00.
                calldatacopy(hashesFront, leaves.offset, shl(5, leaves.length))
                // Compute the back of the hashes.
                let hashesBack := add(hashesFront, shl(5, leaves.length))
                // This is the end of the memory for the queue.
                // We recycle `flagsLength` to save on stack variables (sometimes save gas).
                flags.length := add(hashesBack, shl(5, flags.length))

                // We don't need to make a copy of `proof.offset` or `flags.offset`,
                // as they are pass-by-value (this trick may not always save gas).

                for {} 1 {} {
                    // Pop from `hashes`.
                    let a := mload(hashesFront)
                    // Pop from `hashes`.
                    let b := mload(add(hashesFront, 0x20))
                    hashesFront := add(hashesFront, 0x40)

                    // If the flag is false, load the next proof,
                    // else, pops from the queue.
                    if iszero(calldataload(flags.offset)) {
                        // Loads the next proof.
                        b := calldataload(proof.offset)
                        proof.offset := add(proof.offset, 0x20)
                        // Unpop from `hashes`.
                        hashesFront := sub(hashesFront, 0x20)
                    }

                    // Advance to the next flag offset.
                    flags.offset := add(flags.offset, 0x20)

                    // Slot of `a` in scratch space.
                    // If the condition is true: 0x20, otherwise: 0x00.
                    let scratch := shl(5, gt(a, b))
                    // Hash the scratch space and push the result onto the queue.
                    mstore(scratch, a)
                    mstore(xor(scratch, 0x20), b)
                    mstore(hashesBack, keccak256(0x00, 0x40))
                    hashesBack := add(hashesBack, 0x20)
                    if iszero(lt(hashesBack, flags.length)) { break }
                }
                isValid :=
                    and(
                        // Checks if the last value in the queue is same as the root.
                        eq(mload(sub(hashesBack, 0x20)), root),
                        // And whether all the proofs are used, if required.
                        eq(proofEnd, proof.offset)
                    )
                break
            }
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                   EMPTY CALLDATA HELPERS                   */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns an empty calldata bytes32 array.
    function emptyProof() internal pure returns (bytes32[] calldata proof) {
        /// @solidity memory-safe-assembly
        assembly {
            proof.length := 0
        }
    }

    /// @dev Returns an empty calldata bytes32 array.
    function emptyLeaves() internal pure returns (bytes32[] calldata leaves) {
        /// @solidity memory-safe-assembly
        assembly {
            leaves.length := 0
        }
    }

    /// @dev Returns an empty calldata bool array.
    function emptyFlags() internal pure returns (bool[] calldata flags) {
        /// @solidity memory-safe-assembly
        assembly {
            flags.length := 0
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Reentrancy guard mixin.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/ReentrancyGuard.sol)
abstract contract ReentrancyGuard {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                       CUSTOM ERRORS                        */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Unauthorized reentrant call.
    error Reentrancy();

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                          STORAGE                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Equivalent to: `uint72(bytes9(keccak256("_REENTRANCY_GUARD_SLOT")))`.
    /// 9 bytes is large enough to avoid collisions with lower slots,
    /// but not too large to result in excessive bytecode bloat.
    uint256 private constant _REENTRANCY_GUARD_SLOT = 0x929eee149b4bd21268;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                      REENTRANCY GUARD                      */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Guards a function from reentrancy.
    modifier nonReentrant() virtual {
        /// @solidity memory-safe-assembly
        assembly {
            if eq(sload(_REENTRANCY_GUARD_SLOT), address()) {
                mstore(0x00, 0xab143c06) // `Reentrancy()`.
                revert(0x1c, 0x04)
            }
            sstore(_REENTRANCY_GUARD_SLOT, address())
        }
        _;
        /// @solidity memory-safe-assembly
        assembly {
            sstore(_REENTRANCY_GUARD_SLOT, codesize())
        }
    }

    /// @dev Guards a view function from read-only reentrancy.
    modifier nonReadReentrant() virtual {
        /// @solidity memory-safe-assembly
        assembly {
            if eq(sload(_REENTRANCY_GUARD_SLOT), address()) {
                mstore(0x00, 0xab143c06) // `Reentrancy()`.
                revert(0x1c, 0x04)
            }
        }
        _;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @notice Read and write to persistent storage at a fraction of the cost.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/SSTORE2.sol)
/// @author Saw-mon-and-Natalie (https://github.com/Saw-mon-and-Natalie)
/// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SSTORE2.sol)
/// @author Modified from 0xSequence (https://github.com/0xSequence/sstore2/blob/master/contracts/SSTORE2.sol)
/// @author Modified from SSTORE3 (https://github.com/Philogy/sstore3)
library SSTORE2 {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         CONSTANTS                          */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The proxy initialization code.
    uint256 private constant _CREATE3_PROXY_INITCODE = 0x67363d3d37363d34f03d5260086018f3;

    /// @dev Hash of the `_CREATE3_PROXY_INITCODE`.
    /// Equivalent to `keccak256(abi.encodePacked(hex"67363d3d37363d34f03d5260086018f3"))`.
    bytes32 internal constant CREATE3_PROXY_INITCODE_HASH =
        0x21c35dbe1b344a2488cf3321d6ce542f8e9f305544ff09e4993a62319a497c1f;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                        CUSTOM ERRORS                       */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Unable to deploy the storage contract.
    error DeploymentFailed();

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         WRITE LOGIC                        */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Writes `data` into the bytecode of a storage contract and returns its address.
    function write(bytes memory data) internal returns (address pointer) {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(data) // Let `l` be `n + 1`. +1 as we prefix a STOP opcode.
            /**
             * ---------------------------------------------------+
             * Opcode | Mnemonic       | Stack     | Memory       |
             * ---------------------------------------------------|
             * 61 l   | PUSH2 l        | l         |              |
             * 80     | DUP1           | l l       |              |
             * 60 0xa | PUSH1 0xa      | 0xa l l   |              |
             * 3D     | RETURNDATASIZE | 0 0xa l l |              |
             * 39     | CODECOPY       | l         | [0..l): code |
             * 3D     | RETURNDATASIZE | 0 l       | [0..l): code |
             * F3     | RETURN         |           | [0..l): code |
             * 00     | STOP           |           |              |
             * ---------------------------------------------------+
             * @dev Prefix the bytecode with a STOP opcode to ensure it cannot be called.
             * Also PUSH2 is used since max contract size cap is 24,576 bytes which is less than 2 ** 16.
             */
            // Do a out-of-gas revert if `n + 1` is more than 2 bytes.
            mstore(add(data, gt(n, 0xfffe)), add(0xfe61000180600a3d393df300, shl(0x40, n)))
            // Deploy a new contract with the generated creation code.
            pointer := create(0, add(data, 0x15), add(n, 0xb))
            if iszero(pointer) {
                mstore(0x00, 0x30116425) // `DeploymentFailed()`.
                revert(0x1c, 0x04)
            }
            mstore(data, n) // Restore the length of `data`.
        }
    }

    /// @dev Writes `data` into the bytecode of a storage contract with `salt`
    /// and returns its normal CREATE2 deterministic address.
    function writeCounterfactual(bytes memory data, bytes32 salt)
        internal
        returns (address pointer)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(data)
            // Do a out-of-gas revert if `n + 1` is more than 2 bytes.
            mstore(add(data, gt(n, 0xfffe)), add(0xfe61000180600a3d393df300, shl(0x40, n)))
            // Deploy a new contract with the generated creation code.
            pointer := create2(0, add(data, 0x15), add(n, 0xb), salt)
            if iszero(pointer) {
                mstore(0x00, 0x30116425) // `DeploymentFailed()`.
                revert(0x1c, 0x04)
            }
            mstore(data, n) // Restore the length of `data`.
        }
    }

    /// @dev Writes `data` into the bytecode of a storage contract and returns its address.
    /// This uses the so-called "CREATE3" workflow,
    /// which means that `pointer` is agnostic to `data, and only depends on `salt`.
    function writeDeterministic(bytes memory data, bytes32 salt)
        internal
        returns (address pointer)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(data)
            mstore(0x00, _CREATE3_PROXY_INITCODE) // Store the `_PROXY_INITCODE`.
            let proxy := create2(0, 0x10, 0x10, salt)
            if iszero(proxy) {
                mstore(0x00, 0x30116425) // `DeploymentFailed()`.
                revert(0x1c, 0x04)
            }
            mstore(0x14, proxy) // Store the proxy's address.
            // 0xd6 = 0xc0 (short RLP prefix) + 0x16 (length of: 0x94 ++ proxy ++ 0x01).
            // 0x94 = 0x80 + 0x14 (0x14 = the length of an address, 20 bytes, in hex).
            mstore(0x00, 0xd694)
            mstore8(0x34, 0x01) // Nonce of the proxy contract (1).
            pointer := keccak256(0x1e, 0x17)

            // Do a out-of-gas revert if `n + 1` is more than 2 bytes.
            mstore(add(data, gt(n, 0xfffe)), add(0xfe61000180600a3d393df300, shl(0x40, n)))
            if iszero(
                mul( // The arguments of `mul` are evaluated last to first.
                    extcodesize(pointer),
                    call(gas(), proxy, 0, add(data, 0x15), add(n, 0xb), codesize(), 0x00)
                )
            ) {
                mstore(0x00, 0x30116425) // `DeploymentFailed()`.
                revert(0x1c, 0x04)
            }
            mstore(data, n) // Restore the length of `data`.
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                    ADDRESS CALCULATIONS                    */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Returns the initialization code hash of the storage contract for `data`.
    /// Used for mining vanity addresses with create2crunch.
    function initCodeHash(bytes memory data) internal pure returns (bytes32 hash) {
        /// @solidity memory-safe-assembly
        assembly {
            let n := mload(data)
            // Do a out-of-gas revert if `n + 1` is more than 2 bytes.
            returndatacopy(returndatasize(), returndatasize(), gt(n, 0xfffe))
            mstore(data, add(0x61000180600a3d393df300, shl(0x40, n)))
            hash := keccak256(add(data, 0x15), add(n, 0xb))
            mstore(data, n) // Restore the length of `data`.
        }
    }

    /// @dev Equivalent to `predictCounterfactualAddress(data, salt, address(this))`
    function predictCounterfactualAddress(bytes memory data, bytes32 salt)
        internal
        view
        returns (address pointer)
    {
        pointer = predictCounterfactualAddress(data, salt, address(this));
    }

    /// @dev Returns the CREATE2 address of the storage contract for `data`
    /// deployed with `salt` by `deployer`.
    /// Note: The returned result has dirty upper 96 bits. Please clean if used in assembly.
    function predictCounterfactualAddress(bytes memory data, bytes32 salt, address deployer)
        internal
        pure
        returns (address predicted)
    {
        bytes32 hash = initCodeHash(data);
        /// @solidity memory-safe-assembly
        assembly {
            // Compute and store the bytecode hash.
            mstore8(0x00, 0xff) // Write the prefix.
            mstore(0x35, hash)
            mstore(0x01, shl(96, deployer))
            mstore(0x15, salt)
            predicted := keccak256(0x00, 0x55)
            // Restore the part of the free memory pointer that has been overwritten.
            mstore(0x35, 0)
        }
    }

    /// @dev Equivalent to `predictDeterministicAddress(salt, address(this))`.
    function predictDeterministicAddress(bytes32 salt) internal view returns (address pointer) {
        pointer = predictDeterministicAddress(salt, address(this));
    }

    /// @dev Returns the "CREATE3" deterministic address for `salt` with `deployer`.
    function predictDeterministicAddress(bytes32 salt, address deployer)
        internal
        pure
        returns (address pointer)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let m := mload(0x40) // Cache the free memory pointer.
            mstore(0x00, deployer) // Store `deployer`.
            mstore8(0x0b, 0xff) // Store the prefix.
            mstore(0x20, salt) // Store the salt.
            mstore(0x40, CREATE3_PROXY_INITCODE_HASH) // Store the bytecode hash.

            mstore(0x14, keccak256(0x0b, 0x55)) // Store the proxy's address.
            mstore(0x40, m) // Restore the free memory pointer.
            // 0xd6 = 0xc0 (short RLP prefix) + 0x16 (length of: 0x94 ++ proxy ++ 0x01).
            // 0x94 = 0x80 + 0x14 (0x14 = the length of an address, 20 bytes, in hex).
            mstore(0x00, 0xd694)
            mstore8(0x34, 0x01) // Nonce of the proxy contract (1).
            pointer := keccak256(0x1e, 0x17)
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         READ LOGIC                         */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Equivalent to `read(pointer, 0, 2 ** 256 - 1)`.
    function read(address pointer) internal view returns (bytes memory data) {
        /// @solidity memory-safe-assembly
        assembly {
            data := mload(0x40)
            let n := and(0xffffffffff, sub(extcodesize(pointer), 0x01))
            extcodecopy(pointer, add(data, 0x1f), 0x00, add(n, 0x21))
            mstore(data, n) // Store the length.
            mstore(0x40, add(n, add(data, 0x40))) // Allocate memory.
        }
    }

    /// @dev Equivalent to `read(pointer, start, 2 ** 256 - 1)`.
    function read(address pointer, uint256 start) internal view returns (bytes memory data) {
        /// @solidity memory-safe-assembly
        assembly {
            data := mload(0x40)
            let n := and(0xffffffffff, sub(extcodesize(pointer), 0x01))
            let l := sub(n, and(0xffffff, mul(lt(start, n), start)))
            extcodecopy(pointer, add(data, 0x1f), start, add(l, 0x21))
            mstore(data, mul(sub(n, start), lt(start, n))) // Store the length.
            mstore(0x40, add(data, add(0x40, mload(data)))) // Allocate memory.
        }
    }

    /// @dev Returns a slice of the data on `pointer` from `start` to `end`.
    /// `start` and `end` will be clamped to the range `[0, args.length]`.
    /// The `pointer` MUST be deployed via the SSTORE2 write functions.
    /// Otherwise, the behavior is undefined.
    /// Out-of-gas reverts if `pointer` does not have any code.
    function read(address pointer, uint256 start, uint256 end)
        internal
        view
        returns (bytes memory data)
    {
        /// @solidity memory-safe-assembly
        assembly {
            data := mload(0x40)
            if iszero(lt(end, 0xffff)) { end := 0xffff }
            let d := mul(sub(end, start), lt(start, end))
            extcodecopy(pointer, add(data, 0x1f), start, add(d, 0x01))
            if iszero(and(0xff, mload(add(data, d)))) {
                let n := sub(extcodesize(pointer), 0x01)
                returndatacopy(returndatasize(), returndatasize(), shr(40, n))
                d := mul(gt(n, start), sub(d, mul(gt(end, n), sub(end, n))))
            }
            mstore(data, d) // Store the length.
            mstore(add(add(data, 0x20), d), 0) // Zeroize the slot after the bytes.
            mstore(0x40, add(add(data, 0x40), d)) // Allocate memory.
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

//////////////////////////////////////////////////////////////////
// ▒▒▒▒▒▒▒▒██ ░░░░░███████████ ▒▒▒▒█████████ ███▓▓▓▓ ▓▓▓▓▓▓▓░░░ //
// ▒▒▒▒▒▒▒▒██ ░███████████████ ▒▒▒▒█████████ ░░▓▓▓▓▓ ░░░░░▓▓▓▓▓ //
// ▒▒▒▒▒▒▒▒██ ░███████████████ ▒▒▒▒█████████ ░░▓▓▓▓▓ ░░░░░▓▓▓▓▓ //
// ▒▒▒▒▒▒▒▒██ ▓▓▓▓▓▓██████████ ▒▒▒▒█████████ ░░░░▓▓▓ ▓▓▓▓▓▓▓▓░░ //
// ██▒▒▒▒▒▒▒▒ ░███████████████ ▒▒▒▒▒▒▒▒█████ ░░▓▓▓▓▓ ░░░░░▓▓▓▓▓ //
// ██▒▒▒▒▒▒▒▒ ▓▓▓▓▓▓██████████ ▒▒▒▒█████████ ▓▓▓▓▓░░ ▓▓▓▓▓▓▓▓░░ //
// █████████▒ █████░░░░░░░░░░░ ▒████████████ ████▓▓▓ ▓░░░░░░░░░ //
// █████████▒ █████░░░░░░░░░░░ ▒████████████ ░░░░▓▓▓ ▓▓▓▓▓▓▓▓░░ //
// ▒▒▒▒▒█████ ▓▓▓▓████████████ ▒▒▒▒▒▒▒▒▒▒▒▒▒ ▓▓░░░░░ ░░░▓▓▓▓▓▓▓ //
// ▒▒▒▒▒▒▒▒██ ▓▓▓▓████████████ ▒▒▒▒▒▒▒▒▒▒▒▒▒ ██████░ ░░░░░░▓▓▓▓ //
// ▒▒▒▒▒▒▒▒██ ▓███████████████ ▒▒▒▒█████████ ▓▓▓▓███ ░░░░░░░░░░ //
// ▒▒▒▒▒▒▒▒██ ▓▓▓▓▓▓▓▓▓▓▓▓▓░░░ █▒▒▒▒▒▒▒▒▒▒▒▒ ███████ ░░░░░░▓▓▓▓ //
// ▒▒▒▒▒▒▒▒██ ▓▓▓▓████████████ ▒▒▒▒▒▒▒▒▒▒▒▒▒ ██████░ ░░░░░░▓▓▓▓ //
// █████████▒ █████░░░░░░░░░░░ ▒████████████ ████▓▓▓ ▓░░░░░░░░░ //
// █████████▒ █████████░░░░░░░ ███▒▒▒▒▒▒▒▒▒▒ ▓▓▓▓▓▓█ ░░░░░░▓▓▓▓ //
// ▒▒▒▒▒▒▒▒██ ░░░░░░░░░░░░████ ▒▒▒▒█████████ ██████▓ ▓░░░░░░░░░ //
//////////////////////////////////////////////////////////////////
// ABO, 2025 ███████████████████████████ Leander Herzog & 0xfff //
//////////////////////////////////////////////////////////////////

import "solady/auth/Ownable.sol";
import "solady/utils/MerkleProofLib.sol";
import "solady/utils/ReentrancyGuard.sol";
import "solady/tokens/ERC721.sol";

error IncorrectPrice();
error MaxSupply();
error MaxAP();
error MintingPaused();
error MaxClaimed();
error NoDiscountForAddress();
error DontBeGreedy();
error InvalidProof();
error MaxAllowlistClaimed();
error PublicMintingNotYetOpen();
error AllowlistMintingNotYetOpen();
error TokenDoesNotExist();

abstract contract AboAdmin is ERC721, Ownable, ReentrancyGuard {
    uint256 public constant PRICE = 0.15 ether;
    uint8 public constant MINT_SUPPLY = 140;
    uint8 public constant ARTIST_ALLOTMENT = 10;
    uint8 public constant MAX_PER_TRANSACTION = 1;

    uint256 public editionCount;
    uint256 public apCount;
    bool public mintingPaused = true;
    mapping(address => uint256) public allowlistMinted;
    bytes32 public allowlistRoot;
    uint256 public allowlistFrom = 1751299200; // Monday, June 30: 6pm CET
    uint256 public publicFrom = 1751385600; // Tuesday, July 1: 6pm CET

    address public render;

    constructor(address _owner) ERC721() {
        _initializeOwner(_owner);
    }

    function totalSupply() public view returns (uint256) {
        return editionCount + apCount;
    }

    //////////////////////////////////////////////////////////
    // Mint
    //////////////////////////////////////////////////////////

    function mintAllowlist(bytes32[] calldata proof, uint256 max, uint256 amount)
        external
        payable
        allowlistMintChecks(proof, max, amount)
        nonReentrant
    {
        _mintToken(msg.sender, editionCount + 1, amount);
        editionCount += amount;
    }

    function mint(uint256 amount) external payable publicMintCheck(amount) nonReentrant {
        _mintToken(msg.sender, editionCount + 1, amount);
        editionCount += amount;
    }

    function mintAp(address to, uint256 amount) external apMintCheck(to, amount) onlyOwner nonReentrant {
        _mintToken(to, MINT_SUPPLY + 1 + apCount, amount);
        apCount += amount;
    }

    function mintOwner(address to, uint256 amount) external ownerMintCheck(to, amount) onlyOwner nonReentrant {
        _mintToken(to, editionCount + 1, amount);
        editionCount += amount;
    }

    function _mintToken(address to, uint256 startId, uint256 amount) internal {
        for (uint256 id = startId; id < startId + amount;) {
            _mint(to, id);
            unchecked {
                ++id;
            }
        }
    }

    //////////////////////////////////////////////////////////
    // Checks
    //////////////////////////////////////////////////////////

    modifier publicMintCheck(uint256 amount) {
        if (editionCount + amount > MINT_SUPPLY) revert MaxSupply();
        if (mintingPaused) revert MintingPaused();

        if (block.timestamp < publicFrom) revert PublicMintingNotYetOpen();

        if (msg.value != amount * PRICE) revert IncorrectPrice();
        if (amount > MAX_PER_TRANSACTION) revert DontBeGreedy();

        _;
    }

    modifier allowlistMintChecks(bytes32[] calldata proof, uint256 max, uint256 amount) {
        if (editionCount + amount > MINT_SUPPLY) revert MaxSupply();
        if (mintingPaused) revert MintingPaused();

        if (msg.value != amount * PRICE) revert IncorrectPrice();
        if (amount > MAX_PER_TRANSACTION) revert DontBeGreedy();

        if (block.timestamp < publicFrom) {
            if (block.timestamp < allowlistFrom) revert AllowlistMintingNotYetOpen();
            bytes32 leaf = keccak256(bytes.concat(keccak256(abi.encode(msg.sender, max))));
            bool validProof = MerkleProofLib.verifyCalldata(proof, allowlistRoot, leaf);
            if (!validProof) revert InvalidProof();
            if (allowlistMinted[msg.sender] + amount > max) revert MaxAllowlistClaimed();
            allowlistMinted[msg.sender] += amount;
        }

        _;
    }

    modifier apMintCheck(address to, uint256 amount) {
        if (apCount + amount > ARTIST_ALLOTMENT) revert MaxAP();
        _;
    }

    modifier ownerMintCheck(address to, uint256 amount) {
        if (editionCount + amount > MINT_SUPPLY) revert MaxSupply();
        _;
    }

    //////////////////////////////////////////////////////////
    // Admin
    //////////////////////////////////////////////////////////

    /// @notice Pause/Unpause minting
    function setPause(bool value) public onlyOwner {
        mintingPaused = value;
    }

    /// @notice Set allowlist mint timestamp
    function setAllowlistFrom(uint256 from) public onlyOwner {
        allowlistFrom = from;
    }

    /// @notice Set public mint timestamp
    function setPublicFrom(uint256 from) public onlyOwner {
        publicFrom = from;
    }

    /// @notice Set merkle root for reserve claims
    function setAllowlistRoot(bytes32 newRoot) public onlyOwner {
        allowlistRoot = newRoot;
    }

    /// @notice Withdraws balance to address
    function withdraw(address payable _to) public onlyOwner {
        require(_to != address(0));
        (bool success,) = _to.call{value: address(this).balance}("");
        require(success);
    }

    /// @notice Set render contract address
    function setRender(address _render) public onlyOwner {
        render = _render;
    }

    //////////////////////////////////////////////////////////
    // Utility
    //////////////////////////////////////////////////////////

    /// @notice Returns the token IDs owned by the address
    function tokensOf(address owner) external view returns (uint256[] memory) {
        uint256[] memory tokens = new uint256[](balanceOf(owner));
        uint256 counter;
        for (uint256 i = 1; i <= editionCount; i++) {
            if (_exists(i) && ownerOf(i) == owner) {
                tokens[counter] = i;
                counter++;
            }
        }
        for (uint256 i = MINT_SUPPLY + 1; i <= MINT_SUPPLY + 1 + apCount; i++) {
            if (_exists(i) && ownerOf(i) == owner) {
                tokens[counter] = i;
                counter++;
            }
        }
        return tokens;
    }

    /// @notice Returns all token owners and ids
    function tokenOwners() external view returns (address[] memory, uint256[] memory) {
        address[] memory owners = new address[](totalSupply());
        uint256[] memory ids = new uint256[](totalSupply());
        uint256 counter;
        for (uint256 i = 1; i <= editionCount; i++) {
            if (_exists(i)) {
                owners[counter] = ownerOf(i);
                ids[counter] = i;
                counter++;
            }
        }
        for (uint256 i = MINT_SUPPLY + 1; i <= MINT_SUPPLY + 1 + apCount; i++) {
            if (_exists(i)) {
                owners[counter] = ownerOf(i);
                ids[counter] = i;
                counter++;
            }
        }
        return (owners, ids);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

//////////////////////////////////////////////////////////////////
// ▓▓▓▓▓▓░░░░ ▒████████████ █████░░░░░░░░░░░ █████████▒ ████▓▓▓ //
// ▓░░░░░░░░░ ▒▒▒▒▒████████ ░░░░░░░░░░░░████ ██▒▒▒▒▒▒▒▒ ██████▓ //
// ▓▓▓▓▓▓▓░░░ ▒▒▒▒▒▒███████ ░░░░░███████████ ██▒▒▒▒▒▒▒▒ ███▓▓▓▓ //
// ░░░░░▓▓▓▓▓ ▒▒▒▒▒▒▒▒█████ ░███████████████ ██▒▒▒▒▒▒▒▒ ░░▓▓▓▓▓ //
// ▓▓▓▓▓▓▓▓░░ ▒▒▒▒█████████ ▓▓▓▓▓▓██████████ ██▒▒▒▒▒▒▒▒ ▓▓▓▓▓░░ //
// ▓▓▓▓▓▓▓▓░░ ▒▒▒▒▒▒▒▒▒▒███ ░░░░░░░░░░░░████ ▒▒▒▒▒▒▒▒██ ░░░░▓▓▓ //
// ░░░░░░▓▓▓▓ ███▒▒▒▒▒▒▒▒▒▒ █████████░░░░░░░ █████████▒ ▓▓▓▓▓▓█ //
// ░░░░▓▓▓▓▓▓ ███▒▒▒▒▒▒▒▒▒▒ █████░░░░░░░░░░░ █████████▒ ▓▓▓▓▓▓█ //
// ▓▓▓▓▓▓▓▓░░ ▒████████████ █████░░░░░░░░░░░ █████████▒ ░░░░▓▓▓ //
// ▓▓▓▓▓▓▓░░░ ▒▒▒▒█████████ ░░░░░███████████ ██▒▒▒▒▒▒▒▒ ███▓▓▓▓ //
// ░░░░░░▓▓▓▓ ▒▒▒▒▒▒▒▒▒▒▒▒▒ ▓▓▓▓████████████ ▒▒▒▒▒▒▒▒██ ██████░ //
// ░░░░░░▓▓▓▓ ▒▒▒▒▒▒▒▒▒▒▒▒▒ ▓▓▓▓████████████ ▒▒▒▒▒▒▒▒██ ██████░ //
// ▓░░░░░░░░░ ▒▒▒██████████ █████░░░░░░░░░░░ █████████▒ ████▓▓▓ //
// ░░░░░░▓▓▓▓ █▒▒▒▒▒▒▒▒▒▒▒▒ ▓▓▓▓▓▓▓▓▓▓▓▓▓░░░ ▒▒▒▒▒▒▒▒██ ███████ //
// ░░░░░░▓▓▓▓ █▒▒▒▒▒▒▒▒▒▒▒▒ ▓▓▓▓▓▓▓▓▓▓▓▓▓░░░ ▒▒▒▒▒▒▒▒██ ███████ //
// ░░░▓▓▓▓▓▓▓ ▒▒▒▒▒▒▒▒▒▒▒▒▒ ▓▓▓▓████████████ ▒▒▒▒▒█████ ▓▓░░░░░ //
//////////////////////////////////////////////////////////////////
// ABO, 2025 ███████████████████████████ Leander Herzog & 0xfff //
//////////////////////////////////////////////////////////////////

struct AboState {
    uint8[6] inbound;
    uint8[6] outbound;
    uint8[6] ignored;
    bool isUnlocked;
}

library AboStateLib {
    uint8 constant MAX_CONNECTIONS = 6;

    //////////////////////////////////////////////////////////
    // Count Functions (memory)
    //////////////////////////////////////////////////////////

    function inboundCount(AboState memory state) internal pure returns (uint8 count) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.inbound[i] != 0) count++;
        }
    }

    function outboundCount(AboState memory state) internal pure returns (uint8 count) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.outbound[i] != 0) count++;
        }
    }

    function totalCount(AboState memory state) internal pure returns (uint8 count) {
        count = inboundCount(state) + outboundCount(state);
    }

    function ignoredCount(AboState memory state) internal pure returns (uint8 count) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.ignored[i] != 0) count++;
        }
    }

    //////////////////////////////////////////////////////////
    // Check Functions (memory)
    //////////////////////////////////////////////////////////

    function hasInbound(AboState memory state, uint8 tokenId) internal pure returns (bool) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.inbound[i] == tokenId) return true;
        }
        return false;
    }

    function hasOutbound(AboState memory state, uint8 tokenId) internal pure returns (bool) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.outbound[i] == tokenId) return true;
        }
        return false;
    }

    function hasConnection(AboState memory state, uint8 tokenId) internal pure returns (bool) {
        return hasInbound(state, tokenId) || hasOutbound(state, tokenId);
    }

    function isIgnoring(AboState memory state, uint8 tokenId) internal pure returns (bool) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.ignored[i] == tokenId) return true;
        }
        return false;
    }

    //////////////////////////////////////////////////////////
    // Add Functions (memory) - returns modified struct
    //////////////////////////////////////////////////////////

    function addInbound(AboState memory state, uint8 tokenId) internal pure returns (AboState memory) {
        require(tokenId != 0, "Invalid token ID");
        require(!hasInbound(state, tokenId), "Already has inbound connection");
        require(totalCount(state) < MAX_CONNECTIONS, "Max connections reached");

        for (uint8 i = 0; i < 6; i++) {
            if (state.inbound[i] == 0) {
                state.inbound[i] = tokenId;
                break;
            }
        }
        return state;
    }

    function addOutbound(AboState memory state, uint8 tokenId) internal pure returns (AboState memory) {
        require(tokenId != 0, "Invalid token ID");
        require(!hasOutbound(state, tokenId), "Already has outbound connection");
        require(totalCount(state) < MAX_CONNECTIONS, "Max connections reached");

        for (uint8 i = 0; i < 6; i++) {
            if (state.outbound[i] == 0) {
                state.outbound[i] = tokenId;
                break;
            }
        }
        return state;
    }

    function addIgnored(AboState memory state, uint8 tokenId) internal pure returns (AboState memory) {
        require(tokenId != 0, "Invalid token ID");
        require(!isIgnoring(state, tokenId), "Already ignoring");

        for (uint8 i = 0; i < 6; i++) {
            if (state.ignored[i] == 0) {
                state.ignored[i] = tokenId;
                return state;
            }
        }
        revert("Max ignored limit reached");
    }

    //////////////////////////////////////////////////////////
    // Remove Functions (memory) - returns modified struct
    //////////////////////////////////////////////////////////

    function removeInbound(AboState memory state, uint8 tokenId) internal pure returns (AboState memory) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.inbound[i] == tokenId) {
                // Shift remaining elements to avoid gaps
                for (uint8 j = i; j < 5; j++) {
                    state.inbound[j] = state.inbound[j + 1];
                }
                state.inbound[5] = 0;
                break;
            }
        }
        return state;
    }

    function removeOutbound(AboState memory state, uint8 tokenId) internal pure returns (AboState memory) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.outbound[i] == tokenId) {
                // Shift remaining elements to avoid gaps
                for (uint8 j = i; j < 5; j++) {
                    state.outbound[j] = state.outbound[j + 1];
                }
                state.outbound[5] = 0;
                break;
            }
        }
        return state;
    }

    function removeIgnored(AboState memory state, uint8 tokenId) internal pure returns (AboState memory) {
        for (uint8 i = 0; i < 6; i++) {
            if (state.ignored[i] == tokenId) {
                // Shift remaining elements to avoid gaps
                for (uint8 j = i; j < 5; j++) {
                    state.ignored[j] = state.ignored[j + 1];
                }
                state.ignored[5] = 0;
                break;
            }
        }
        return state;
    }

    //////////////////////////////////////////////////////////
    // Clear Functions (memory) - returns modified struct
    //////////////////////////////////////////////////////////

    function clearInbound(AboState memory state) internal pure returns (AboState memory) {
        for (uint8 i = 0; i < 6; i++) {
            state.inbound[i] = 0;
        }
        return state;
    }

    function clearOutbound(AboState memory state) internal pure returns (AboState memory) {
        for (uint8 i = 0; i < 6; i++) {
            state.outbound[i] = 0;
        }
        return state;
    }

    function clearAll(AboState memory state) internal pure returns (AboState memory) {
        state = clearInbound(state);
        state = clearOutbound(state);
        // Note: We don't clear ignored connections
        return state;
    }

    //////////////////////////////////////////////////////////
    // Get Functions (return arrays)
    //////////////////////////////////////////////////////////

    function getInboundUnsorted(AboState memory state) internal pure returns (uint8[] memory) {
        uint8 count = inboundCount(state);
        uint8[] memory result = new uint8[](count);
        uint8 index = 0;

        for (uint8 i = 0; i < 6; i++) {
            if (state.inbound[i] != 0) {
                result[index++] = state.inbound[i];
            }
        }
        return result;
    }

    function getInbound(AboState memory state) internal pure returns (uint8[] memory) {
        uint8[] memory result = getInboundUnsorted(state);
        _insertionSort(result);
        return result;
    }

    function getOutboundUnsorted(AboState memory state) internal pure returns (uint8[] memory) {
        uint8 count = outboundCount(state);
        uint8[] memory result = new uint8[](count);
        uint8 index = 0;

        for (uint8 i = 0; i < 6; i++) {
            if (state.outbound[i] != 0) {
                result[index++] = state.outbound[i];
            }
        }
        return result;
    }

    function getOutbound(AboState memory state) internal pure returns (uint8[] memory) {
        uint8[] memory result = getOutboundUnsorted(state);
        _insertionSort(result);
        return result;
    }

    function getConnections(AboState memory state) internal pure returns (uint8[] memory) {
        // No duplicates since we prevent bidirectional connections
        uint8 totalConnections = inboundCount(state) + outboundCount(state);
        uint8[] memory result = new uint8[](totalConnections);
        uint8 index = 0;

        // Add all inbound
        for (uint8 i = 0; i < 6; i++) {
            if (state.inbound[i] != 0) {
                result[index++] = state.inbound[i];
            }
        }

        // Add all outbound
        for (uint8 i = 0; i < 6; i++) {
            if (state.outbound[i] != 0) {
                result[index++] = state.outbound[i];
            }
        }

        _insertionSort(result);

        return result;
    }

    //////////////////////////////////////////////////////////
    // Utility Functions for working with memory structs
    //////////////////////////////////////////////////////////

    function setUnlocked(AboState memory state, bool unlocked) internal pure returns (AboState memory) {
        state.isUnlocked = unlocked;
        return state;
    }

    function _insertionSort(uint8[] memory arr) internal pure {
        for (uint8 i = 1; i < arr.length; i++) {
            uint8 key = arr[i];
            uint8 j = i;
            while (j > 0 && arr[j - 1] > key) {
                arr[j] = arr[j - 1];
                j--;
            }
            arr[j] = key;
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

import "solady/utils/LibString.sol";
import "solady/utils/Base64.sol";
import "solady/utils/SSTORE2.sol";

library AboHTML {
    struct TokenInfo {
        uint256 id;
        uint8[] connections;
        string owner;
        bool isUnlocked;
    }

    struct TokenData {
        TokenInfo[] tokens;
    }

    struct Bundles {
        address scriptPointer;
        address cssPointer;
    }

    //////////////////////////////////////////////////////////
    // HTML Generation
    //////////////////////////////////////////////////////////

    function tokenHTML(TokenData memory data, Bundles memory bundles) internal view returns (string memory) {
        return string.concat("data:text/html;base64,", Base64.encode(bytes(_assembleHTML(data, bundles))));
    }

    function _assembleHTML(TokenData memory data, Bundles memory bundles) internal view returns (string memory) {
        return string.concat(_htmlHead(bundles), _htmlBody(data, bundles));
    }

    //////////////////////////////////////////////////////////
    // HTML Structure
    //////////////////////////////////////////////////////////

    function _htmlHead(Bundles memory bundles) internal view returns (string memory) {
        return string.concat(
            "<!doctype html>",
            "<html lang=\"en\">",
            "<head>",
            "<title>ABO, 2025 by Leander Herzog & 0xfff</title>",
            "<meta charset=\"utf-8\">",
            "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">",
            "<meta name=\"description\" content=\"ABO\">",
            "<meta name=\"theme-color\" content=\"#000000\">",
            "<meta name=\"mobile-web-app-capable\" content=\"yes\">",
            "<style>body{margin:0;overscroll-behavior:none;}</style>",
            _loadCSS(bundles.cssPointer),
            "</head>"
        );
    }

    function _htmlBody(TokenData memory data, Bundles memory bundles) internal view returns (string memory) {
        return string.concat(
            "<body>",
            "<main class=\"abo\" tabindex=\"-1\"></main>",
            _generateTokenDataScript(data),
            _loadScript(bundles.scriptPointer),
            "</body>",
            "</html>"
        );
    }

    //////////////////////////////////////////////////////////
    // Token Data Injection
    //////////////////////////////////////////////////////////

    function _generateTokenDataScript(TokenData memory data) internal view returns (string memory) {
        string memory tokensArray = "[";

        for (uint256 i = 0; i < data.tokens.length; i++) {
            if (i > 0) tokensArray = string.concat(tokensArray, ",");

            // Generate connections array for this token
            string memory connectionsStr = "[";
            for (uint256 j = 0; j < data.tokens[i].connections.length; j++) {
                if (j > 0) connectionsStr = string.concat(connectionsStr, ",");
                connectionsStr = string.concat(connectionsStr, LibString.toString(data.tokens[i].connections[j]));
            }
            connectionsStr = string.concat(connectionsStr, "]");

            // Generate token object
            tokensArray = string.concat(
                tokensArray,
                "{id:",
                LibString.toString(data.tokens[i].id),
                ",connections:",
                connectionsStr,
                ",owner:\"",
                data.tokens[i].owner,
                "\",isUnlocked:",
                data.tokens[i].isUnlocked ? "true" : "false",
                "}"
            );
        }

        tokensArray = string.concat(tokensArray, "]");

        return string.concat("<script>window.tokens=", tokensArray, ";</script>");
    }

    //////////////////////////////////////////////////////////
    // Bundle Loading
    //////////////////////////////////////////////////////////

    function _loadScript(address _scriptPointer) internal view returns (string memory) {
        if (_scriptPointer == address(0)) {
            return "";
        }

        string memory js = string(SSTORE2.read(_scriptPointer));
        return string.concat("<script>", js, "</script>");
    }

    function _loadCSS(address _cssPointer) internal view returns (string memory) {
        if (_cssPointer == address(0)) {
            return "";
        }

        string memory css = string(SSTORE2.read(_cssPointer));
        return string.concat("<style>", css, "</style>");
    }

    //////////////////////////////////////////////////////////
    // Bundle Management Helpers
    //////////////////////////////////////////////////////////

    function setScript(Bundles storage bundles, string memory script) internal {
        bundles.scriptPointer = SSTORE2.write(bytes(script));
    }

    function setCSS(Bundles storage bundles, string memory styles) internal {
        bundles.cssPointer = SSTORE2.write(bytes(styles));
    }

    function getScript(Bundles memory bundles) internal view returns (string memory) {
        return bundles.scriptPointer == address(0) ? "" : string(SSTORE2.read(bundles.scriptPointer));
    }

    function getCSS(Bundles memory bundles) internal view returns (string memory) {
        return bundles.cssPointer == address(0) ? "" : string(SSTORE2.read(bundles.cssPointer));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

import "./RNG.sol";
import "./Colors.sol";
import "solady/utils/LibString.sol";

library AboSVG {
    using RNG for RNG.State;
    using LibString for uint256;
    using Colors for Colors.ColorManager;

    // Fixed point arithmetic scale (4 decimal)
    uint256 constant SCALE = 10000;

    // Weighted probability helper function - p() equiv
    function weightedChoice(RNG.State memory r, uint256[2][] memory weights) internal pure returns (uint256) {
        uint256 piter = 0;
        uint256 totalWeight = 0;

        // Calculate total weight
        for (uint256 i = 0; i < weights.length; i++) {
            totalWeight += weights[i][0];
        }

        // Generate random value in range
        uint256 randomValue = (r.nextScaled(uint32(SCALE)) * totalWeight) / SCALE;

        // Find selected item
        piter = 0;
        for (uint256 i = 0; i < weights.length; i++) {
            piter += weights[i][0];
            if (randomValue < piter) {
                return weights[i][1];
            }
        }

        // Fallback to last item
        return weights[weights.length - 1][1];
    }

    // Generate heights array
    function generateHeights(RNG.State memory r) internal pure returns (uint256[] memory) {
        uint256 arraySize = (r.nextScaled(uint32(SCALE)) * 15) / SCALE + 1;
        uint256[] memory heights = new uint256[](arraySize);

        uint256[2][] memory heightWeights = new uint256[2][](7);
        heightWeights[0] = [uint256(1), uint256(2)];
        heightWeights[1] = [uint256(3), uint256(7)];
        heightWeights[2] = [uint256(9), uint256(20)];
        heightWeights[3] = [uint256(10), uint256(100)];
        heightWeights[4] = [uint256(5), uint256(200)];
        heightWeights[5] = [uint256(2), uint256(700)];
        heightWeights[6] = [uint256(1), uint256(1000)];

        for (uint256 i = 0; i < arraySize; i++) {
            uint256 baseHeight = weightedChoice(r, heightWeights);
            heights[i] = (r.nextScaled(uint32(SCALE)) * baseHeight) / SCALE + 2;
        }

        // Sort the heights
        for (uint256 i = 0; i < arraySize; i++) {
            for (uint256 j = i + 1; j < arraySize; j++) {
                if (heights[i] > heights[j]) {
                    uint256 temp = heights[i];
                    heights[i] = heights[j];
                    heights[j] = temp;
                }
            }
        }

        return heights;
    }

    function getFFColor(uint256 index) internal pure returns (uint256 packedColor) {
        if (index == 0) return Colors.packColor(10000, 1700, 0);
        if (index == 1) return Colors.packColor(10000, 10000, 6000);
        if (index == 2) return Colors.packColor(1000, 0, 0);
        if (index == 3) return Colors.packColor(10000, 8200, 0);
        if (index == 4) return Colors.packColor(1100, 4700, 0);
        if (index == 5) return Colors.packColor(2200, 5200, 10000);
        if (index == 6) return Colors.packColor(0, 1200, 1200);
        if (index == 7) return Colors.packColor(10000, 4800, 5700);
        if (index == 8) return Colors.packColor(2900, 0, 5600);
        if (index == 9) return Colors.packColor(10000, 10000, 0);
        if (index == 10) return Colors.packColor(10000, 0, 4700);
        if (index == 11) return Colors.packColor(1200, 0, 2000);
        if (index == 12) return Colors.packColor(10000, 10000, 10000);
        if (index == 13) return Colors.packColor(6700, 6700, 6700);
        if (index == 14) return Colors.packColor(2500, 2500, 2500);
        if (index == 15) return Colors.packColor(0, 0, 10000);
        return 0; // Default
    }

    struct Stack {
        uint256 id;
        uint256 ccount;
        uint256[10] colors; // Up to 10 packed colors (increased from 6)
        uint256 numColors; // Actual number of colors (2-10)
        uint256 max;
        uint256 style;
        uint256 special;
        uint256[] heights; // Pre-generated height array
        Item[] items;
        bool direction;
    }

    struct Item {
        bool visible;
        uint256 currentHeight;
        uint256[2] colors; // 2 packed colors (bg, fg)
        uint256 animProgress; // 0 to SCALE
    }

    function generateSVG(
        uint256 tokenId,
        uint256[] memory connectedIds,
        uint256[] memory connectionCounts,
        uint256 timestamp,
        uint256 size
    ) internal pure returns (string memory) {
        // Sort connected IDs and their corresponding connection counts
        // connectionCounts[0] = main token count, connectionCounts[1..n] = connected token counts
        uint256[] memory sortedConnectedIds = new uint256[](connectedIds.length);
        uint256[] memory sortedConnectedCounts = new uint256[](connectedIds.length);

        // Copy arrays for sorting (skip first connectionCount as it belongs to main token)
        for (uint256 i = 0; i < connectedIds.length; i++) {
            sortedConnectedIds[i] = connectedIds[i];
            sortedConnectedCounts[i] = connectionCounts[i + 1]; // Skip main token's count at index 0
        }

        // Bubble sort both arrays together, sorting by id
        for (uint256 i = 0; i < sortedConnectedIds.length; i++) {
            for (uint256 j = i + 1; j < sortedConnectedIds.length; j++) {
                if (sortedConnectedIds[i] > sortedConnectedIds[j]) {
                    // Swap IDs
                    uint256 tempId = sortedConnectedIds[i];
                    sortedConnectedIds[i] = sortedConnectedIds[j];
                    sortedConnectedIds[j] = tempId;

                    // Swap corresponding connection counts
                    uint256 tempCount = sortedConnectedCounts[i];
                    sortedConnectedCounts[i] = sortedConnectedCounts[j];
                    sortedConnectedCounts[j] = tempCount;
                }
            }
        }

        // Create ids array with token first, then sorted connected ids
        uint256[] memory ids = new uint256[](sortedConnectedIds.length + 1);
        ids[0] = tokenId;
        for (uint256 i = 0; i < sortedConnectedIds.length; i++) {
            ids[i + 1] = sortedConnectedIds[i];
        }

        // Create connection counts array with token's count first, then sorted counts
        uint256[] memory sortedCounts = new uint256[](connectionCounts.length);
        sortedCounts[0] = connectionCounts[0]; // Token's own connection count (first element in original array)
        for (uint256 i = 0; i < sortedConnectedCounts.length; i++) {
            sortedCounts[i + 1] = sortedConnectedCounts[i];
        }

        // Generate stacks with packed colors
        (Stack[] memory stacks, uint256 totalCcount) = generateStacks(ids, sortedCounts, timestamp);

        return renderSVG(stacks, totalCcount, size);
    }

    function generateStacks(uint256[] memory ids, uint256[] memory connectionCounts, uint256 timestamp)
        internal
        pure
        returns (Stack[] memory stacks, uint256 totalCcount)
    {
        stacks = new Stack[](ids.length);

        // Current time in milliseconds
        uint256 currentTime = timestamp * 1000;
        uint256 minuteStart = (timestamp / 60) * 60; // Start of minute in seconds

        for (uint256 i = 0; i < ids.length; i++) {
            uint256 id = ids[i];
            RNG.State memory r = RNG.init(id+3737);

            // Use actual connection count, no RNG call
            uint256 ccount = connectionCounts[i];
            totalCcount += ccount;

            // Generate colors using weighted probability like frontend
            uint256[10] memory packedColors;
            uint256 numColors;
            uint256 style;
            uint256 max;
            uint256 special;
            uint256[] memory heights;
            {
                // Create a shuffled copy of the color palette indices
                uint8[] memory indices = new uint8[](16);
                for (uint8 j = 0; j < 16; j++) {
                    indices[j] = j;
                }
                r.shuffle(indices); // First RNG usage

                uint256[2][] memory colorWeights = new uint256[2][](6);
                colorWeights[0] = [uint256(10), uint256(3)];
                colorWeights[1] = [uint256(20), uint256(4)];
                colorWeights[2] = [uint256(10), uint256(5)];
                colorWeights[3] = [uint256(5), uint256(6)];
                colorWeights[4] = [uint256(2), uint256(7)];
                colorWeights[5] = [uint256(1), uint256(10)];
                numColors = weightedChoice(r, colorWeights);
                if (numColors < 2) numColors = 2; // Safety check
                if (numColors > 10) numColors = 10; // Max limit

                // Pick first numColors from shuffled palette
                for (uint256 j = 0; j < numColors; j++) {
                    uint256 colorIndex = indices[j];
                    packedColors[j] = getFFColor(colorIndex);
                }

                style = r.nextScaled(uint32(SCALE)) * 2 / SCALE;

                max = (r.nextScaled(uint32(SCALE)) * 30) / SCALE + 7; // 30 = 37-7

                special = 0;
                if (r.nextScaled(uint32(SCALE)) >= 5000) {
                    // >= 0.5
                    special = (r.nextScaled(uint32(SCALE)) * 500) / SCALE;
                }

                uint256 speed = ((r.nextScaled(uint32(SCALE)) * 80) / SCALE + 20) * 10; // ri(20,100) * 10

                uint256[2][] memory stepWeights = new uint256[2][](6);
                stepWeights[0] = [uint256(1), uint256(200)];
                stepWeights[1] = [uint256(5), uint256(300)];
                stepWeights[2] = [uint256(9), uint256(500)];
                stepWeights[3] = [uint256(7), uint256(1_000)];
                stepWeights[4] = [uint256(5), uint256(5_000)];
                stepWeights[5] = [uint256(1), uint256(14_000)];
                uint256 step = weightedChoice(r, stepWeights);

                heights = generateHeights(r);

                // Generate items
                Item[] memory items = generateItems(
                    id, currentTime, minuteStart, r, step, speed, special, packedColors, numColors, heights, i > 0
                );

                stacks[i] = Stack({
                    id: id,
                    ccount: ccount,
                    colors: packedColors,
                    numColors: numColors,
                    max: max,
                    style: style,
                    special: special,
                    heights: heights,
                    items: items,
                    direction: i > 0
                });
            }
        }
    }

    function generateItems(
        uint256 id,
        uint256 currentTime,
        uint256 minuteStart,
        RNG.State memory, /* parentR - unused */
        uint256 step,
        uint256 speed,
        uint256 special,
        uint256[10] memory packedColors,
        uint256 numColors,
        uint256[] memory heights,
        bool direction
    ) internal pure returns (Item[] memory) {
        // Store duration for each minute offset: [previous, current, next]
        uint256[3] memory minuteDurations;

        // Pre-generate durations for all minutes
        for (int256 minuteOffset = -1; minuteOffset <= 1; minuteOffset++) {
            uint256 targetMinute = uint256(int256(minuteStart) + minuteOffset * 60);
            RNG.State memory rTimestamp = RNG.init(id * 1000000 + targetMinute);

            // Generate duration for this minute - matching stack.js:121-127
            uint256[2][] memory durationWeights = new uint256[2][](5);
            durationWeights[0] = [uint256(3), uint256(1000)];
            durationWeights[1] = [uint256(10), uint256(4000)];
            durationWeights[2] = [uint256(10), uint256(10000)];
            durationWeights[3] = [uint256(7), uint256(20000)];
            durationWeights[4] = [uint256(1), uint256(30000)];
            uint256 duration = weightedChoice(rTimestamp, durationWeights);

            // Store duration for this minute offset (convert to array index)
            minuteDurations[uint256(int256(minuteOffset) + 1)] = duration;
        }

        // Process timestamps on-the-fly without storing them
        uint256 maxItems = 200;
        Item[] memory items = new Item[](maxItems);
        uint256 itemCount = 0;

        // Generate and process timestamps for previous, current, and next minute
        for (int256 minuteOffset = -1; minuteOffset <= 1; minuteOffset++) {
            uint256 targetMinute = uint256(int256(minuteStart) + minuteOffset * 60);
            RNG.State memory rTimestamp = RNG.init(id * 1000000 + targetMinute);

            // Skip duration generation (already done above) but consume RNG call to maintain sequence
            uint256[2][] memory durationWeights = new uint256[2][](5);
            durationWeights[0] = [uint256(3), uint256(1000)];
            durationWeights[1] = [uint256(10), uint256(4000)];
            durationWeights[2] = [uint256(10), uint256(10000)];
            durationWeights[3] = [uint256(7), uint256(20000)];
            durationWeights[4] = [uint256(1), uint256(30000)];
            weightedChoice(rTimestamp, durationWeights); // Consume RNG call

            // Generate timestamps for this minute and process immediately
            uint256 pointer = targetMinute * 1000; // Convert to milliseconds
            uint256 limit = pointer + 60000; // 60 seconds in milliseconds

            while (pointer < limit && itemCount < maxItems) {
                // JS: pointer += step * r() - step is already in milliseconds
                pointer += (step * rTimestamp.nextScaled(uint32(SCALE))) / SCALE;

                if (pointer < limit) {
                    uint256 timestamp = pointer;

                    // Re-seed RNG for each item - matching Item constructor (frontend uses millisecond timestamp)
                    RNG.State memory rItem = RNG.init(timestamp);

                    // Item color selection - matching item.js:10-13
                    uint256 len = numColors;
                    if (len < 2) len = 2;

                    // JS: i1 = f(r() * c.length)
                    uint256 index1 = (rItem.nextScaled(uint32(SCALE)) * len) / SCALE;
                    if (index1 >= len) index1 = len - 1;

                    // JS: i2 = (i1 + f(r() * (c.length - 2) + 1)) % c.length
                    uint256 index2;
                    if (len <= 2) {
                        index2 = (index1 + 1) % len;
                    } else {
                        uint256 offset = (rItem.nextScaled(uint32(SCALE)) * (len - 2)) / SCALE + 1;
                        index2 = (index1 + offset) % len;
                    }

                    uint256[2] memory itemColors;
                    if (direction) {
                        itemColors[0] = packedColors[index2];
                        itemColors[1] = packedColors[index1];
                    } else {
                        itemColors[0] = packedColors[index1];
                        itemColors[1] = packedColors[index2];
                    }

                    // Height selection - matching item.js:14
                    uint256 height;
                    if (heights.length > 0) {
                        uint256 heightIndex = (rItem.nextScaled(uint32(SCALE)) * heights.length) / SCALE;
                        if (heightIndex >= heights.length) heightIndex = heights.length - 1;
                        height = heights[heightIndex];
                    } else {
                        height = 10; // Fallback
                    }

                    // Get the stored duration for this item's minute
                    uint256 itemMinuteStart = (timestamp / 1000) / 60 * 60; // Get minute start for this timestamp
                    uint256 minuteOffsetIndex =
                        itemMinuteStart > minuteStart ? 2 : (itemMinuteStart < minuteStart ? 0 : 1); // Map to array index
                    uint256 itemMinuteDuration = minuteDurations[minuteOffsetIndex];

                    // Item duration - matching item.js:15: f(this.root.duration * r() + 500)
                    // Add Math.floor equivalent by using integer division
                    uint256 itemDuration = (itemMinuteDuration * rItem.nextScaled(uint32(SCALE))) / SCALE + 500;

                    // Keyframe generation - consume RNG calls to match frontend
                    // JS: steps = p(r, [...])
                    uint256[2][] memory stepWeights = new uint256[2][](4);
                    stepWeights[0] = [uint256(7), uint256(2)];
                    stepWeights[1] = [uint256(20), uint256(3)];
                    stepWeights[2] = [uint256(10), uint256(7)];
                    stepWeights[3] = [uint256(2), uint256(15)];
                    uint256 steps = weightedChoice(rItem, stepWeights);

                    uint256 q = rItem.nextScaled(uint32(SCALE));
                    for (uint256 k = 0; k < steps; k++) {
                        if (rItem.nextScaled(uint32(SCALE)) > 3000) {
                            q = rItem.nextScaled(uint32(SCALE));
                        }
                    }

                    for (uint256 k = 0; k <= steps; k++) {
                        // + 1
                        if (rItem.nextScaled(uint32(SCALE)) > 9000) {
                            rItem.nextScaled(uint32(SCALE)); // Consume RNG call
                        }
                    }

                    // Calculate animation timing
                    uint256 startTime = timestamp;
                    uint256 entryDuration = speed;
                    uint256 colorDuration = itemDuration;
                    uint256 exitDuration = speed;
                    uint256 endTime = startTime + entryDuration + colorDuration + exitDuration;

                    // Check if item should be visible at current time
                    if (currentTime >= startTime && currentTime <= endTime) {
                        uint256 elapsed = currentTime - startTime;
                        uint256 animProgress = 0;

                        uint256 currentHeight;
                        if (elapsed < entryDuration) {
                            // Entry phase
                            currentHeight = (height * elapsed) / entryDuration;
                            animProgress = 0;
                        } else if (elapsed < entryDuration + colorDuration) {
                            // Color animation phase
                            currentHeight = height;
                            uint256 colorElapsed = elapsed - entryDuration;
                            animProgress = (colorElapsed * SCALE) / colorDuration;
                        } else {
                            // Exit phase
                            uint256 exitElapsed = elapsed - entryDuration - colorDuration;
                            currentHeight = (height * (exitDuration - exitElapsed)) / exitDuration;
                            animProgress = SCALE;
                        }

                        // Only mark as visible if currentHeight > 0 to avoid invisible/zero-height items
                        if (currentHeight > 0) {
                            items[itemCount] = Item({
                                visible: true,
                                currentHeight: currentHeight,
                                colors: itemColors,
                                animProgress: animProgress
                            });
                            itemCount++;
                        }
                    }
                }
            }
        }

        // Resize array to actual count
        Item[] memory finalItems = new Item[](itemCount);
        for (uint256 i = 0; i < itemCount; i++) {
            finalItems[i] = items[i];
        }

        return finalItems;
    }

    function renderSVG(Stack[] memory stacks, uint256 totalCcount, uint256 size)
        internal
        pure
        returns (string memory)
    {
        // Collect all unique colors - estimate max needed
        // Max stacks * max colors per stack * max items per stack
        // Realistic: ~10 stacks * 6 colors + items = ~100 unique colors max
        uint256 maxColors = 100;
        uint256[] memory uniqueColors = new uint256[](maxColors);
        uint8[] memory colorIds = new uint8[](maxColors);
        uint8 colorCount = 0;

        // Single pass color collection with linear search
        for (uint256 i = 0; i < stacks.length; i++) {
            // Stack colors - only check up to numColors
            for (uint256 j = 0; j < stacks[i].numColors; j++) {
                uint256 color = stacks[i].colors[j];
                bool found = false;

                // Linear search
                for (uint8 k = 0; k < colorCount; k++) {
                    if (uniqueColors[k] == color) {
                        found = true;
                        break;
                    }
                }

                if (!found && colorCount < maxColors) {
                    uniqueColors[colorCount] = color;
                    colorIds[colorCount] = colorCount;
                    colorCount++;
                }
            }

            // Item colors
            for (uint256 k = 0; k < stacks[i].items.length; k++) {
                if (stacks[i].items[k].visible) {
                    for (uint256 m = 0; m < 2; m++) {
                        uint256 color = stacks[i].items[k].colors[m];
                        bool found = false;

                        for (uint8 n = 0; n < colorCount; n++) {
                            if (uniqueColors[n] == color) {
                                found = true;
                                break;
                            }
                        }

                        if (!found && colorCount < maxColors) {
                            uniqueColors[colorCount] = color;
                            colorIds[colorCount] = colorCount;
                            colorCount++;
                        }
                    }
                }
            }
        }

        // Build SVG
        string memory svg = string.concat(
            '<svg width="',
            size.toString(),
            '" height="',
            size.toString(),
            '" viewBox="0 0 ',
            size.toString(),
            " ",
            size.toString(),
            '" xmlns="http://www.w3.org/2000/svg"><style>'
        );

        // Generate CSS for all colors in one pass
        for (uint8 i = 0; i < colorCount; i++) {
            svg = string.concat(svg, ".c", uint256(i).toString(), "{fill:", Colors.colorToCSS(uniqueColors[i]), "}");
        }

        // Add background and start rendering
        svg = string.concat(
            svg, '</style><rect width="', size.toString(), '" height="', size.toString(), '" fill="#111"/>'
        );

        // Render stacks
        uint256 xOffset = 0;
        for (uint256 i = 0; i < stacks.length; i++) {
            uint256 stackWidth;
            if (i == stacks.length - 1) {
                // Last stack gets remaining space to avoid rounding gaps
                stackWidth = size - xOffset;
            } else if (totalCcount == 0) {
                // If no connections, divide space equally among stacks
                stackWidth = size / stacks.length;
            } else {
                stackWidth = (stacks[i].ccount * size) / totalCcount;
            }

            // Find color ID for stack background
            uint8 bgColorId = 0;
            for (uint8 j = 0; j < colorCount; j++) {
                if (uniqueColors[j] == stacks[i].colors[0]) {
                    bgColorId = j;
                    break;
                }
            }

            // Stack group and background
            svg = string.concat(
                svg,
                '<g transform="translate(',
                xOffset.toString(),
                ',0)">',
                '<rect width="',
                stackWidth.toString(),
                '" height="',
                size.toString(),
                '" class="c',
                uint256(bgColorId).toString(),
                '"/>'
            );

            // Render items
            svg = string.concat(svg, renderItems(stacks[i], stackWidth, uniqueColors, colorCount));

            svg = string.concat(svg, "</g>");
            xOffset += stackWidth;
        }

        return string.concat(svg, "</svg>");
    }

    function renderItems(Stack memory stack, uint256 stackWidth, uint256[] memory uniqueColors, uint8 colorCount)
        internal
        pure
        returns (string memory result)
    {
        uint256 currentY = 0;

        for (uint256 j = 0; j < stack.items.length; j++) {
            if (!stack.items[j].visible) continue;

            uint256 barHeight = stack.items[j].currentHeight;

            // Find color IDs
            uint8 bgColorId = 0;
            uint8 fgColorId = 0;

            for (uint8 k = 0; k < colorCount; k++) {
                if (uniqueColors[k] == stack.items[j].colors[0]) bgColorId = k;
                if (uniqueColors[k] == stack.items[j].colors[1]) fgColorId = k;
            }

            // Background rect
            result = string.concat(
                result,
                '<rect y="',
                currentY.toString(),
                '" width="',
                stackWidth.toString(),
                '" height="',
                barHeight.toString(),
                '" class="c',
                uint256(bgColorId).toString(),
                '"/>'
            );

            // Foreground rect with progress
            uint256 fgWidth = (stackWidth * stack.items[j].animProgress) / SCALE;
            if (fgWidth > 0) {
                result = string.concat(
                    result,
                    '<rect y="',
                    currentY.toString(),
                    '" width="',
                    fgWidth.toString(),
                    '" height="',
                    barHeight.toString(),
                    '" class="c',
                    uint256(fgColorId).toString(),
                    '"/>'
                );
            }

            currentY += barHeight;

            if (currentY > 1000) break;
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

import "solady/utils/LibString.sol";

library Colors {
    using LibString for uint256;

    // Pack RGB values into single uint256: (r << 32) | (g << 16) | b
    // Each component is 0-10000 (4 decimal places, needs 14 bits, using 16-bit spacing)

    function packColor(uint256 r, uint256 g, uint256 b) internal pure returns (uint256 packed) {
        return (r << 32) | (g << 16) | b;
    }

    function unpackColor(uint256 packed) internal pure returns (uint256 r, uint256 g, uint256 b) {
        r = (packed >> 32) & 0xFFFF;
        g = (packed >> 16) & 0xFFFF;
        b = packed & 0xFFFF;
    }

    // Pre-compute decimal strings for common values
    function getDecimalString(uint256 value) internal pure returns (string memory) {
        // Clamp to valid range
        if (value > 10000) value = 10000;

        // Use efficient lookup for common values
        if (value == 0) return "0.0000";
        if (value == 10000) return "1.0000";
        if (value == 5000) return "0.5000";
        if (value == 2500) return "0.2500";
        if (value == 7500) return "0.7500";

        // For other values, calculate efficiently
        uint256 intPart = value / 10000;
        uint256 fracPart = value % 10000;

        string memory result = intPart.toString();
        result = string.concat(result, ".");

        // Add leading zeros and fractional part - always 4 digits to match JS toFixed(4)
        if (fracPart < 1000) result = string.concat(result, "0");
        if (fracPart < 100) result = string.concat(result, "0");
        if (fracPart < 10) result = string.concat(result, "0");
        result = string.concat(result, fracPart.toString());

        return result;
    }

    // Convert packed color to CSS Display P3 string
    function colorToCSS(uint256 packedColor) internal pure returns (string memory) {
        (uint256 r, uint256 g, uint256 b) = unpackColor(packedColor);

        return string.concat(
            "color(display-p3 ", getDecimalString(r), " ", getDecimalString(g), " ", getDecimalString(b), ")"
        );
    }

    struct ColorManager {
        mapping(uint256 => uint8) colorToId; // packed color -> class ID
        uint256[] idToColor; // class ID -> packed color
        uint8 nextId; // next available ID
    }

    function getColorId(ColorManager storage manager, uint256 packedColor) internal returns (uint8 colorId) {
        colorId = manager.colorToId[packedColor];

        if (colorId == 0 && (manager.idToColor.length == 0 || manager.idToColor[0] != packedColor)) {
            // New color, assign ID
            colorId = manager.nextId++;
            manager.colorToId[packedColor] = colorId;

            // Expand array if needed
            if (colorId >= manager.idToColor.length) {
                manager.idToColor.push(packedColor);
            } else {
                manager.idToColor[colorId] = packedColor;
            }
        }

        return colorId;
    }

    function generateCSS(ColorManager storage manager) internal view returns (string memory css) {
        css = "<style>";

        for (uint8 i = 0; i < manager.nextId; i++) {
            css = string.concat(css, ".c", uint256(i).toString(), "{fill:", colorToCSS(manager.idToColor[i]), "}");
        }

        css = string.concat(css, "</style>");
    }

    function getClassName(uint8 colorId) internal pure returns (string memory) {
        return string.concat("c", uint256(colorId).toString());
    }
}

// SPDX-License-Identifier: Unlicense
pragma solidity >=0.8.0;

import "solady/utils/Base64.sol";
import "solady/utils/LibString.sol";

library Metadata {
    string constant JSON_BASE64_HEADER = "data:application/json;base64,";
    string constant SVG_XML_BASE64_HEADER = "data:image/svg+xml;base64,";

    function encodeMetadata(
        uint256 _tokenId,
        string memory _name,
        string memory _description,
        string memory _attributes,
        string memory _svg,
        string memory _animationUrl
    ) internal pure returns (string memory) {
        string memory metadata = string.concat(
            "{",
            keyValue("tokenId", LibString.toString(_tokenId)),
            ",",
            keyValue("name", _name),
            ",",
            keyValue("description", _description),
            ",",
            keyValueNoQuotes("attributes", _attributes),
            ",",
            keyValue("image", _encodeSVG(_svg)),
            ",",
            keyValue("animation_url", _animationUrl),
            "}"
        );

        return _encodeJSON(metadata);
    }

    /// @notice base64 encode json
    /// @param _json, stringified json
    /// @return string, bytes64 encoded json with prefix
    function _encodeJSON(string memory _json) internal pure returns (string memory) {
        return string.concat(JSON_BASE64_HEADER, Base64.encode(bytes(_json)));
    }

    /// @notice base64 encode svg
    /// @param _svg, stringified json
    /// @return string, bytes64 encoded svg with prefix
    function _encodeSVG(string memory _svg) internal pure returns (string memory) {
        return string.concat(SVG_XML_BASE64_HEADER, Base64.encode(bytes(_svg)));
    }

    function keyValue(string memory _key, string memory _value) internal pure returns (string memory) {
        return string.concat('"', _key, '":"', _value, '"');
    }

    function keyValueNoQuotes(string memory _key, string memory _value) internal pure returns (string memory) {
        return string.concat('"', _key, '":', _value);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

/**
 * @title RNG
 * @notice Simple deterministic RNG that matches JavaScript implementation exactly
 * @dev Uses Linear Congruential Generator (LCG) with parameters from Numerical Recipes
 */
library RNG {
    struct State {
        uint32 seed;
    }

    /**
     * @notice Hash function to spread any input across full 32-bit space
     * @dev Uses bit-mixing without large multiplications to avoid overflow issues
     * @param input The input value to hash
     * @return hash The hashed 32-bit value
     */
    function hashSeed(uint256 input) internal pure returns (uint32 hash) {
        // Simple but effective hash - just multiply by a large prime and ensure it's not zero
        hash = uint32(input);
        unchecked {
            hash = hash * 0x9E3779B9; // Golden ratio based multiplier
        }
        if (hash == 0) hash = 1;
        return hash;
    }

    /**
     * @notice Initialize RNG with seed
     * @param seed Initial seed value
     * @return state The initialized RNG state
     */
    function init(uint256 seed) internal pure returns (State memory state) {
        // Hash the seed to ensure good distribution even for consecutive inputs
        state.seed = hashSeed(seed);
        if (state.seed == 0) {
            state.seed = 1;
        }
    }

    /**
     * @notice Generate next random number and update seed
     * @param state The RNG state to update
     * @return value The generated 32-bit unsigned integer
     */
    function next(State memory state) internal pure returns (uint32 value) {
        // LCG formula: (a * seed + c) mod 2^32
        // Using parameters from Numerical Recipes
        uint32 a = 1664525;
        uint32 c = 1013904223;

        unchecked {
            state.seed = a * state.seed + c;
        }

        return state.seed;
    }

    /**
     * @notice Generate a random number between 0 and max (exclusive)
     * @param state The RNG state
     * @param max The upper bound (exclusive)
     * @return value Random number in range [0, max)
     */
    function nextMax(State memory state, uint32 max) internal pure returns (uint32 value) {
        return next(state) % max;
    }

    /**
     * @notice Generate a random number between min and max (inclusive)
     * @param state The RNG state
     * @param min The lower bound (inclusive)
     * @param max The upper bound (inclusive)
     * @return value Random number in range [min, max]
     */
    function nextInt(State memory state, uint32 min, uint32 max) internal pure returns (uint32 value) {
        uint32 range = max - min + 1;
        return min + (next(state) % range);
    }

    /**
     * @notice Shuffle an array of uint8s in place
     * @param state The RNG state
     * @param array The array to shuffle
     */
    function shuffle(State memory state, uint8[] memory array) internal pure {
        for (uint256 i = array.length - 1; i > 0; i--) {
            uint256 j = next(state) % (i + 1);
            uint8 temp = array[i];
            array[i] = array[j];
            array[j] = temp;
        }
    }

    /**
     * @notice Generate a "float" between 0 and SCALE
     * @param state The RNG state
     * @param scale The scale factor (e.g., 10000 for 4 decimal places)
     * @return value Scaled integer representing a decimal
     */
    function nextScaled(State memory state, uint32 scale) internal pure returns (uint32 value) {
        // Equivalent to nextFloat() * scale in JS
        uint256 raw = next(state);
        return uint32((raw * scale) / 0x100000000);
    }
}

// SPDX-License-Identifier: Unlicense
pragma solidity >=0.8.0;

import "solady/utils/LibString.sol";

library SVG {
    //////////////////////////////////////////////////////////
    // Element
    //////////////////////////////////////////////////////////

    function element(string memory _type, string memory _attributes) internal pure returns (string memory) {
        return string.concat("<", _type, " ", _attributes, "/>");
    }

    function element(string memory _type, string memory _attributes, string memory _children)
        internal
        pure
        returns (string memory)
    {
        return string.concat("<", _type, " ", _attributes, ">", _children, "</", _type, ">");
    }

    function element(string memory _type, string memory _attributes, string memory _child1, string memory _child2)
        internal
        pure
        returns (string memory)
    {
        return element(_type, _attributes, string.concat(_child1, _child2));
    }

    function element(
        string memory _type,
        string memory _attributes,
        string memory _child1,
        string memory _child2,
        string memory _child3
    ) internal pure returns (string memory) {
        return element(_type, _attributes, string.concat(_child1, _child2, _child3));
    }

    function element(
        string memory _type,
        string memory _attributes,
        string memory _child1,
        string memory _child2,
        string memory _child3,
        string memory _child4
    ) internal pure returns (string memory) {
        return element(_type, _attributes, string.concat(_child1, _child2, _child3, _child4));
    }

    function element(
        string memory _type,
        string memory _attributes,
        string memory _child1,
        string memory _child2,
        string memory _child3,
        string memory _child4,
        string memory _child5
    ) internal pure returns (string memory) {
        return element(_type, _attributes, string.concat(_child1, _child2, _child3, _child4, _child5));
    }

    function element(
        string memory _type,
        string memory _attributes,
        string memory _child1,
        string memory _child2,
        string memory _child3,
        string memory _child4,
        string memory _child5,
        string memory _child6
    ) internal pure returns (string memory) {
        return element(_type, _attributes, string.concat(_child1, _child2, _child3, _child4, _child5, _child6));
    }

    function element(
        string memory _type,
        string memory _attributes,
        string memory _child1,
        string memory _child2,
        string memory _child3,
        string memory _child4,
        string memory _child5,
        string memory _child6,
        string memory _child7
    ) internal pure returns (string memory) {
        return element(_type, _attributes, string.concat(_child1, _child2, _child3, _child4, _child5, _child6, _child7));
    }

    function element(
        string memory _type,
        string memory _attributes,
        string memory _child1,
        string memory _child2,
        string memory _child3,
        string memory _child4,
        string memory _child5,
        string memory _child6,
        string memory _child7,
        string memory _child8
    ) internal pure returns (string memory) {
        return element(
            _type, _attributes, string.concat(_child1, _child2, _child3, _child4, _child5, _child6, _child7, _child8)
        );
    }

    //////////////////////////////////////////////////////////
    // Attributes
    //////////////////////////////////////////////////////////

    function svgAttributes(uint256 height) internal pure returns (string memory) {
        return string.concat(
            'xmlns="http://www.w3.org/2000/svg" ' 'xmlns:xlink="http://www.w3.org/1999/xlink" ' 'width="100%" '
            'height="100%" ' 'viewBox="0 0 1000 ',
            LibString.toString(height),
            '" ',
            'preserveAspectRatio="xMidYMid meet" ',
            'fill="none" '
        );
    }

    function textAttributes(string[2] memory _coords, string memory _attributes)
        internal
        pure
        returns (string memory)
    {
        return string.concat("x=", _quote(_coords[0]), "y=", _quote(_coords[1]), " ", _attributes, " ");
    }

    function rectAttributes(string memory _width, string memory _height, string memory _fill, string memory _attributes)
        internal
        pure
        returns (string memory)
    {
        return string.concat(
            "width=", _quote(_width), "height=", _quote(_height), "fill=", _quote(_fill), " ", _attributes, " "
        );
    }

    function _quote(string memory value) internal pure returns (string memory) {
        return string.concat('"', value, '" ');
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

//////////////////////////////////////////////////////////////////
// ▒▒▒▒█████████ ███▓▓▓▓ ░░░░░███████████ ▒▒▒▒▒▒▒▒██ ▓▓▓▓▓▓▓░░░ //
// ▒▒▒▒█████████ ░░▓▓▓▓▓ ░███████████████ ▒▒▒▒▒▒▒▒██ ░░░░░▓▓▓▓▓ //
// ▒▒▒▒█████████ ░░░░▓▓▓ ▓▓▓▓▓▓██████████ ▒▒▒▒▒▒▒▒██ ▓▓▓▓▓▓▓▓░░ //
// ▒▒▒▒█████████ ██████▓ ░░░░░░░░░░░░████ ▒▒▒▒▒▒▒▒██ ▓░░░░░░░░░ //
// ▒████████████ ████▓▓▓ █████░░░░░░░░░░░ █████████▒ ▓░░░░░░░░░ //
// █▒▒▒▒▒▒▒▒▒▒▒▒ ███████ ▓▓▓▓▓▓▓▓▓▓▓▓▓░░░ ▒▒▒▒▒▒▒▒██ ░░░░░░▓▓▓▓ //
// ▒████████████ ░░░░▓▓▓ █████░░░░░░░░░░░ █████████▒ ▓▓▓▓▓▓▓▓░░ //
// █▒▒▒▒▒▒▒▒▒▒▒▒ ███████ ▓▓▓▓▓▓▓▓▓▓▓▓▓░░░ ▒▒▒▒▒▒▒▒██ ░░░░░░▓▓▓▓ //
// ▒▒▒▒▒▒▒▒▒▒▒▒▒ ▓▓░░░░░ ▓▓▓▓████████████ ▒▒▒▒▒█████ ░░░▓▓▓▓▓▓▓ //
// ▒▒▒▒▒▒▒▒▒▒▒▒▒ ██████░ ▓▓▓▓████████████ ▒▒▒▒▒▒▒▒██ ░░░░░░▓▓▓▓ //
// ▒▒▒▒█████████ ▓▓▓▓███ ▓███████████████ ▒▒▒▒▒▒▒▒██ ░░░░░░░░░░ //
// ▒▒▒▒█████████ ░░░░▓▓▓ ▓▓▓▓▓▓██████████ ▒▒▒▒▒▒▒▒██ ▓▓▓▓▓▓▓▓░░ //
// █▒▒▒▒▒▒▒▒▒▒▒▒ ███████ ▓▓▓▓▓▓▓▓▓▓▓▓▓░░░ ▒▒▒▒▒▒▒▒██ ░░░░░░▓▓▓▓ //
// ▒████████████ ████▓▓▓ █████░░░░░░░░░░░ █████████▒ ▓░░░░░░░░░ //
// █▒▒▒▒▒▒▒▒▒▒▒▒ ███████ ▓▓▓▓▓▓▓▓▓▓▓▓▓░░░ ▒▒▒▒▒▒▒▒██ ░░░░░░▓▓▓▓ //
// ███▒▒▒▒▒▒▒▒▒▒ ▓▓▓▓▓▓█ █████████░░░░░░░ █████████▒ ░░░░░░▓▓▓▓ //
//////////////////////////////////////////////////////////////////
// ABO, 2025 ███████████████████████████ Leander Herzog & 0xfff //
//////////////////////////////////////////////////////////////////

import "solady/utils/LibString.sol";
import "solady/auth/Ownable.sol";
import "solady/utils/LibString.sol";
import {ENS} from "ens-contracts/registry/ENS.sol";
import {IReverseRegistrar} from "ens-contracts/reverseRegistrar/IReverseRegistrar.sol";
import {INameResolver} from "ens-contracts/resolvers/profiles/INameResolver.sol";
import "./libraries/SVG.sol";
import "./libraries/Metadata.sol";
import "./libraries/AboSVG.sol";
import "./libraries/AboHTML.sol";
import "./Abo.sol";

contract Render is Ownable {
    address public immutable abo;
    address public immutable ensRegistry;
    address public immutable reverseRegistrar;
    AboHTML.Bundles public bundles;

    constructor(address _owner, address _abo, address _ensRegistry, address _reverseRegistrar) {
        abo = _abo;
        ensRegistry = _ensRegistry;
        reverseRegistrar = _reverseRegistrar;
        _initializeOwner(_owner);
    }

    //////////////////////////////////////////////////////////
    // Token URI
    //////////////////////////////////////////////////////////

    function tokenURI(uint256 tokenId) external view returns (string memory) {
        return Metadata.encodeMetadata({
            _tokenId: tokenId,
            _name: _name(tokenId),
            _description: _description(tokenId),
            _attributes: _attributes(tokenId),
            _svg: _svg(tokenId),
            _animationUrl: tokenHTML(tokenId)
        });
    }

    function _name(uint256 _tokenId) internal view returns (string memory) {
        uint8[] memory connected = Abo(abo).getConnections(uint8(_tokenId));

        string memory tokenName = string.concat(unicode"ABO #", LibString.toString(_tokenId));

        if (connected.length > 0) {
            for (uint256 i = 0; i < connected.length; i++) {
                tokenName = string.concat(tokenName, ", #", LibString.toString(uint256(connected[i])));
            }
        }

        return tokenName;
    }

    function _description(uint256 tokenId) internal view returns (string memory) {
        uint8[] memory connected = Abo(abo).getConnections(uint8(tokenId));

        if (connected.length == 0) {
            return string.concat("ABO #", LibString.toString(tokenId), " is not connected to any other ABOs.");
        }

        string memory description = string.concat("ABO #", LibString.toString(tokenId), " is connected to ");

        for (uint256 i = 0; i < connected.length; i++) {
            uint8 connectedId = connected[i];
            (address connectedOwner,) = Abo(abo).tokenState(connectedId);
            string memory ownerStr = resolveAddress(connectedOwner);

            if (i > 0) {
                if (i == connected.length - 1) {
                    description = string.concat(description, " and ");
                } else {
                    description = string.concat(description, ", ");
                }
            }

            description = string.concat(
                description, "ABO #", LibString.toString(uint256(connectedId)), " (owned by ", ownerStr, ")"
            );
        }

        description = string.concat(description, ".");

        return description;
    }

    //////////////////////////////////////////////////////////
    // Attributes
    //////////////////////////////////////////////////////////

    function attributes(uint256 tokenId) external view returns (string memory) {
        return _attributes(tokenId);
    }

    function _attributes(uint256 tokenId) internal view returns (string memory) {
        uint8[] memory connected = Abo(abo).getConnections(uint8(tokenId));
        uint256 connectionCount = connected.length;

        string memory result = "[";
        result = string.concat(
            result,
            _attributeNoQuotes("Connections", LibString.toString(connectionCount)),
            ",",
            _attribute("Status", Abo(abo).isUnlocked(tokenId) ? "Unlocked" : "Locked")
        );

        if (tokenId > 140) {
            result = string.concat(result, ",", _attribute("Artist Proof"));
        }

        return string.concat(result, "]");
    }

    function _attribute(string memory value) internal pure returns (string memory) {
        return string.concat("{", Metadata.keyValue("value", value), "}");
    }

    function _attribute(string memory traitType, string memory value) internal pure returns (string memory) {
        return
            string.concat("{", Metadata.keyValue("trait_type", traitType), ",", Metadata.keyValue("value", value), "}");
    }

    function _attributeNoQuotes(string memory value) internal pure returns (string memory) {
        return string.concat("{", Metadata.keyValueNoQuotes("value", value), "}");
    }

    function _attributeNoQuotes(string memory traitType, string memory value) internal pure returns (string memory) {
        return string.concat(
            "{", Metadata.keyValue("trait_type", traitType), ",", Metadata.keyValueNoQuotes("value", value), "}"
        );
    }

    //////////////////////////////////////////////////////////
    // SVG
    //////////////////////////////////////////////////////////

    function renderSVG(uint256 tokenId) external view returns (string memory) {
        return _svg(tokenId);
    }

    function renderSVGBase64(uint256 tokenId) external view returns (string memory) {
        return Metadata._encodeSVG(_svg(tokenId));
    }

    function _svg(uint256 tokenId) internal view returns (string memory) {
        // Get connected tokens from the Abo contract
        uint8[] memory connected8 = Abo(abo).getConnections(uint8(tokenId));

        // Convert uint8[] to uint256[] and get connection counts
        uint256[] memory connectedIds = new uint256[](connected8.length);
        uint256[] memory connectionCounts = new uint256[](connected8.length + 1);

        // First element is the main token's connection count
        connectionCounts[0] = connected8.length;

        for (uint256 i = 0; i < connected8.length; i++) {
            connectedIds[i] = uint256(connected8[i]);
            // Get connection count for each connected token
            connectionCounts[i + 1] = Abo(abo).getConnections(connected8[i]).length;
        }

        // Generate SVG using current block timestamp for animation
        return AboSVG.generateSVG(
            tokenId,
            connectedIds,
            connectionCounts,
            block.timestamp,
            500 // 500x500
        );
    }

    //////////////////////////////////////////////////////////
    // HTML Rendering
    //////////////////////////////////////////////////////////

    function tokenHTML(uint256 tokenId) public view returns (string memory) {
        uint8[] memory connectedIds = Abo(abo).getConnections(uint8(tokenId));

        // Create array with main token + connected tokens
        AboHTML.TokenInfo[] memory tokens = new AboHTML.TokenInfo[](connectedIds.length + 1);

        // Main token
        (address mainOwner,) = Abo(abo).tokenState(uint8(tokenId));
        string memory mainOwnerStr = resolveAddress(mainOwner);
        tokens[0] = AboHTML.TokenInfo({
            id: tokenId,
            connections: connectedIds,
            owner: mainOwnerStr,
            isUnlocked: Abo(abo).isUnlocked(tokenId)
        });

        // Connected tokens
        for (uint256 i = 0; i < connectedIds.length; i++) {
            uint8 connectedId = connectedIds[i];
            (address connectedOwner,) = Abo(abo).tokenState(connectedId);
            string memory connectedOwnerStr = resolveAddress(connectedOwner);
            uint8[] memory connectedConnections = Abo(abo).getConnections(connectedId);

            tokens[i + 1] = AboHTML.TokenInfo({
                id: uint256(connectedId),
                connections: connectedConnections,
                owner: connectedOwnerStr,
                isUnlocked: Abo(abo).isUnlocked(connectedId)
            });
        }

        AboHTML.TokenData memory data = AboHTML.TokenData({tokens: tokens});

        return AboHTML.tokenHTML(data, bundles);
    }

    //////////////////////////////////////////////////////////
    // Bundle Management
    //////////////////////////////////////////////////////////

    function setScript(string memory script) external onlyOwner {
        AboHTML.setScript(bundles, script);
    }

    function setCSS(string memory styles) external onlyOwner {
        AboHTML.setCSS(bundles, styles);
    }

    function getScript() external view returns (string memory) {
        return AboHTML.getScript(bundles);
    }

    function getCSS() external view returns (string memory) {
        return AboHTML.getCSS(bundles);
    }

    //////////////////////////////////////////////////////////
    // ENS Resolver
    // Author: @yigitduman
    // Source: https://github.com/ygtdmn/drakeflipping/blob/main/src/DrakeflippingRenderer.sol
    //////////////////////////////////////////////////////////

    /**
     * @notice Retrieves the ENS name or checksummed address for a given address.
     * @param addr The address to retrieve the ENS name or checksummed address for.
     * @return The ENS name if available, otherwise the checksummed address.
     */
    function resolveAddress(address addr) internal view returns (string memory) {
        if (ensRegistry != address(0) && reverseRegistrar != address(0)) {
            ENS ens = ENS(ensRegistry);
            IReverseRegistrar reverseRegistrarInstance = IReverseRegistrar(reverseRegistrar);
            bytes32 node = reverseRegistrarInstance.node(addr);
            address resolverAddress = ens.resolver(node);

            if (resolverAddress != address(0)) {
                // If the resolver is not the zero address, try to get the name from the resolver
                try INameResolver(resolverAddress).name(node) returns (string memory name) {
                    // If a name is found and it's not empty, return it
                    if (bytes(name).length > 0) {
                        return name;
                    }
                } catch {}
            }
        }

        // If no valid name is found or registry is not set, return the address as a string
        return LibString.toHexStringChecksummed(addr);
    }

    function _isContract(address _addr) internal view returns (bool) {
        uint32 size;
        assembly {
            size := extcodesize(_addr)
        }
        return size > 0;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;

////////////////////////////////////////////////////////////////////////
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                 ⚘                                  //
//                             sculpture                              //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
//                                                                    //
////////////////////////////////////////////////////////////////////////

interface Sculpture {
    function title() external view returns (string memory);

    function authors() external view returns (string[] memory);

    function addresses() external view returns (address[] memory);

    function urls() external view returns (string[] memory);

    function text() external view returns (string memory);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "viaIR": true,
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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000000000000000000000000fff9a1c9fcae8f2791c91a24b9f0ff6d9c467337

-----Decoded View---------------
Arg [0] : _owner (address): 0xfFf9A1c9fcAe8f2791c91a24B9F0ff6D9c467337

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000fff9a1c9fcae8f2791c91a24b9f0ff6d9c467337