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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

/// @title LINE by Figure31
/// @notice LINE is a photographic series of 250 tokens placed within a synthetic landscape. 
/// Using photographic and post-production techniques similar to Figure31's SALT, the images in 
/// LINE are captured using a digital camera combined with ultra-telephoto lenses. All photographs 
/// are taken in remote empty landscapes at sundown or night. There is no artificial light, only 
/// indirect natural light hitting the camera sensor. Photographs are arranged as panoramas 
/// to recreate a unified landscape.
///
/// @author wilt.eth
import {Constants} from "./Constants.sol";
import {MerkleProof} from "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
import {Descriptor} from "./Descriptor.sol";
import {ITokenDescriptor} from "./ITokenDescriptor.sol";
import {ERC721} from "solmate/tokens/ERC721.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {Ownable2Step} from "@openzeppelin/contracts/access/Ownable2Step.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import {SafeTransferLib} from "solmate/utils/SafeTransferLib.sol";

/// @dev Thrown when attempting to change a token to a star, which is already a star.
error AlreadyStarToken();

/// @dev Thrown when too many tokens are attempted to be minted within a single transaction.
error ExceedsMaxMintPerTransaction();

/// @dev Thrown when a token has not yet reached the end of the grid.
error HasNotReachedEnd();

/// @dev Thrown when the eth passed to purchase a token is incorrect.
error IncorrectPrice();

/// @dev Thrown when attempting to move in a direction opposite of the token's designated direction.
error InvalidDirection();

/// @dev Thrown when the max number of star tokens has already occurred.
error MaxStarTokensReached();

/// @dev Thrown when attempting to mint a token after minting has closed.
error MintingClosed();

/// @dev Thrown when attempting to move a token, and the ability to move tokens has not started yet or is a star token.
error MovementLocked();

/// @dev Thrown when checking the owner or approved address for a non-existent NFT.
error NotMinted();

/// @dev Thrown when checking that the caller is not the owner of the NFT.
error NotTokenOwner();

/// @dev Thrown when attempting to move a token to a place on the grid that is already taken.
error PositionCurrentlyTaken(uint256 x, uint256 y);

/// @dev Thrown when attempting to mint a token to a place on the grid that was not marked to be minted from.
error PositionNotMintable(uint256 x, uint256 y);

/// @dev Thrown when attempting to move a token to a place that is outside the bounds of the grid.
error PositionOutOfBounds(uint256 x, uint256 y);

contract LINE is ERC721, Ownable2Step, ReentrancyGuard, Constants {

    using SafeTransferLib for address payable;

    /// @dev Struct containing the details of the Dutch auction
    struct SalesConfig {
        // start time of the auction
        uint64 startTime;

        // end time of the auction
        uint64 endTime;
        
        // initial price of the Dutch auction
        uint256 startPriceInWei;

        // resting price of the Dutch auction
        uint256 endPriceInWei;

        // recepient of the funds from the Dutch auction
        address payable fundsRecipient;
    }

    /// @dev The maximum allowed number of star tokens.
    uint256 public constant MAX_STAR_TOKENS = 25;

    /// @dev The maximum allowed number of tokens to be minted within a single transaction.
    uint256 public constant MAX_MINT_PER_TX = 5;
    
    /// @dev The maximum number of tokens to be minted.
    uint256 public constant MAX_SUPPLY = 250;
    uint256 internal immutable FUNDS_SEND_GAS_LIMIT = 210_000;

    /// @dev The merkle root for collectors/holders.
    bytes32 public holdersMerkleRoot;

    /// @dev The merkle root for members of FingerprintsDAO.
    bytes32 public fpMembersMerkleRoot;

    /// @dev Keeps track of the current token id.
    uint256 public currentTokenId = 1;
    
    /// @dev Keeps track of the number of tokens that have become star tokens.
    uint256 public numStarTokens;
    
    /// @dev The flag to determine if tokens have the ability to move.
    bool public canMove;
    bool private _isMintingClosed;
    uint256 private  _totalSupply;

    ITokenDescriptor public descriptor;
    SalesConfig public config;

    uint256[NUM_COLUMNS][NUM_ROWS] internal _grid;
    ITokenDescriptor.Coordinate[] internal _availableCoordinates;
    mapping(bytes32 => uint256) internal _coordinateHashToIndex;
    mapping(bytes32 => bool) internal _mintableCoordinates;
    mapping(uint256 => ITokenDescriptor.Token) public tokenIdToTokenInfo;

    constructor(address _descriptor) ERC721("LINE", "LINE") Ownable(msg.sender) {
        descriptor = ITokenDescriptor(_descriptor);
        config.startTime = uint64(1708538400);
        config.endTime = uint64(1708538400 + 3600);
        config.startPriceInWei = 1000000000000000000; // 1 eth
        config.endPriceInWei = 150000000000000000; // .15 eth
        config.fundsRecipient = payable(0x943ccdd95803e35369Ccf42e9618f992fD2Fea2E);
    }
    
    /// @dev Mints a token at a random position on the grid.
    function mintRandom(uint256 quantity, bytes32[] calldata merkleProof) external payable nonReentrant {
        if (block.timestamp < config.startTime || _isMintingClosed) {
            revert MintingClosed();
        }

        if (quantity > MAX_MINT_PER_TX) {
            revert ExceedsMaxMintPerTransaction();
        }
        
        uint256 currentPrice = getCurrentPrice();
        if (merkleProof.length > 0) {
            currentPrice = _getDiscountedCurrentPrice(merkleProof, msg.sender, currentPrice);
        }

        uint256 totalPrice = currentPrice * quantity;
        if (msg.value < totalPrice) {
            revert IncorrectPrice();
        }

        uint256 ethToReturn;
        for (uint256 i=0; i < quantity;) {
            bool success;
            if (_availableCoordinates.length == 0) {
                success = false;
            } else {
                ITokenDescriptor.Coordinate memory coordinateToMint = _availableCoordinates[0];
                success = _mintWithChecks(coordinateToMint, msg.sender);
            }

            if (!success) {
                ethToReturn += currentPrice;
            }

            unchecked {
                ++i;
            }
        }

        // return eth for any pieces that failed to mint because a point on the board was already taken when the mint occurred
        if (ethToReturn > 0) {
            payable(msg.sender).safeTransferETH(ethToReturn);
        }
    }

    /// @dev Mints a token at the specified on the grid.
    function mintAtPosition(ITokenDescriptor.Coordinate[] memory coordinates, bytes32[] calldata merkleProof) external payable nonReentrant {
        if (block.timestamp < config.startTime || _isMintingClosed) {
            revert MintingClosed();
        }

        uint256 numCoordinates = coordinates.length;
        if (numCoordinates > MAX_MINT_PER_TX) {
            revert ExceedsMaxMintPerTransaction();
        }
        
        uint256 currentPrice = getCurrentPrice();
        if (merkleProof.length > 0) {
            currentPrice = _getDiscountedCurrentPrice(merkleProof, msg.sender, currentPrice);
        }

        if (msg.value < (currentPrice * numCoordinates)) {
            revert IncorrectPrice();
        }

        uint256 ethToReturn;
        for (uint256 i=0; i < numCoordinates;) {
            bool success = _mintWithChecks(coordinates[i], msg.sender);
            if (!success) {
                ethToReturn += currentPrice;
            }

            unchecked {
                ++i;
            }
        }

        // return eth for any pieces that failed to mint because a point on the board was already taken when the mint occurred
        if (ethToReturn > 0) {
            payable(msg.sender).safeTransferETH(ethToReturn);
        }
    }

    function artistMint(address receiver, ITokenDescriptor.Coordinate[] memory coordinates) external onlyOwner {
        if (_isMintingClosed) {
            revert MintingClosed();
        }

        uint256 numCoordinates = coordinates.length;
        for (uint256 i=0; i < numCoordinates;) {
            _mintWithChecks(coordinates[i], receiver);

            unchecked {
                ++i;
            }
        }
    }

    /// @dev Ends the ability to mint.
    function closeMint() external onlyOwner {
        _closeMint();
    }

    /// @dev Moves a token one spot to the north on the cartesian grid.
    function moveNorth(uint256 tokenId) external {
        if (tokenIdToTokenInfo[tokenId].direction != ITokenDescriptor.Direction.UP) {
            revert InvalidDirection();
        }

        _move(tokenId, 0, -1);
    }

    /// @dev Moves a token one spot to the northwest on the cartesian grid.
    function moveNorthwest(uint256 tokenId) external {
        if (tokenIdToTokenInfo[tokenId].direction != ITokenDescriptor.Direction.UP) {
            revert InvalidDirection();
        }

        _move(tokenId, -1, -1);
    }

    /// @dev Moves a token one spot to the northeast on the cartesian grid.
    function moveNortheast(uint256 tokenId) external {
        if (tokenIdToTokenInfo[tokenId].direction != ITokenDescriptor.Direction.UP) {
            revert InvalidDirection();
        }

        _move(tokenId, 1, -1);
    }

    /// @dev Moves a token one spot to the south on the cartesian grid.
    function moveSouth(uint256 tokenId) external {
        if (tokenIdToTokenInfo[tokenId].direction != ITokenDescriptor.Direction.DOWN) {
            revert InvalidDirection();
        }

        _move(tokenId, 0, 1);
    }

    /// @dev Moves a token one spot to the southwest on the cartesian grid.
    function moveSouthwest(uint256 tokenId) external {
        if (tokenIdToTokenInfo[tokenId].direction != ITokenDescriptor.Direction.DOWN) {
            revert InvalidDirection();
        }

        _move(tokenId, -1, 1);
    }

    /// @dev Moves a token one spot to the southeast on the cartesian grid.
    function moveSoutheast(uint256 tokenId) external {
        if (tokenIdToTokenInfo[tokenId].direction != ITokenDescriptor.Direction.DOWN) {
            revert InvalidDirection();
        }

        _move(tokenId, 1, 1);
    }

    /// @dev Moves a token one spot to the west on the cartesian grid.
    function moveWest(uint256 tokenId) external {
        _move(tokenId, -1, 0);
    }

    /// @dev Moves a token one spot to the east on the cartesian grid.
    function moveEast(uint256 tokenId) external {
        _move(tokenId, 1, 0);
    }

    /// @dev Converts a token to be a star token and locks their token at the given position.
    function lockAsStar(uint256 tokenId, uint256 x, uint256 y) external {
        if (msg.sender != ownerOf(tokenId)) {
            revert NotTokenOwner();
        }

        ITokenDescriptor.Token memory token = tokenIdToTokenInfo[tokenId];
        if (!_isPositionWithinBounds(x, y, token.direction)) {
            revert PositionOutOfBounds(x,y);
        }

        uint256 yGridIndex = _calculateYGridIndex(y);
        if (_grid[yGridIndex][x] > 0) {
            revert PositionCurrentlyTaken(x,y);
        }

        if (numStarTokens == MAX_STAR_TOKENS) {
            revert MaxStarTokensReached();
        }

        if (!token.hasReachedEnd) {
            revert HasNotReachedEnd();
        }
        
        if (token.isStar) {
            revert AlreadyStarToken();
        }

        _grid[_calculateYGridIndex(token.current.y)][token.current.x] = 0;
        _grid[yGridIndex][x] = tokenId;

        tokenIdToTokenInfo[tokenId].current = ITokenDescriptor.Coordinate({x: x, y: y});
        tokenIdToTokenInfo[tokenId].timestamp = block.timestamp;
        tokenIdToTokenInfo[tokenId].isStar = true;
        numStarTokens++;
    }

    /// @dev Sets the coordinates that are available to minted.
    function setInitialAvailableCoordinates(ITokenDescriptor.Coordinate[] calldata coordinates) external onlyOwner {
        uint256 currentNumTokens = _availableCoordinates.length;
        for (uint256 i = 0; i < coordinates.length;) {
            bytes32 hash = _getCoordinateHash(coordinates[i]);
            _mintableCoordinates[hash] = true;
            _coordinateHashToIndex[hash] = currentNumTokens + i;
            _availableCoordinates.push(coordinates[i]);

            unchecked {
                ++i;
            }
        }
    }

    /// @dev Updates the details of the Dutch auction.
    function updateConfig(
        uint64 startTime,
        uint64 endTime,
        uint256 startPriceInWei,
        uint256 endPriceInWei,
        address payable fundsRecipient
    ) external onlyOwner {
        config.startTime = startTime;
        config.endTime = endTime;
        config.startPriceInWei = startPriceInWei;
        config.endPriceInWei = endPriceInWei;
        config.fundsRecipient = fundsRecipient;
    }

    /// @dev Sets the address of the descriptor.
    function setDescriptor(address _descriptor) external onlyOwner {
        descriptor = ITokenDescriptor(_descriptor);
    }

    /// @dev Updates the merkle roots
    function updateMerkleRoots(bytes32 _holdersRoot, bytes32 _fpMembersRoot) external onlyOwner {
        holdersMerkleRoot = _holdersRoot;
        fpMembersMerkleRoot = _fpMembersRoot;
    }

    /// @dev Withdraws the eth from the contract to the set funds receipient.
    function withdraw() external onlyOwner {
        uint256 balance = address(this).balance;
        (bool success, ) = config.fundsRecipient.call{
            value: balance,
            gas: FUNDS_SEND_GAS_LIMIT
        }("");
        require(success, "Transfer failed.");
    }

    /// @dev Returns the available coordinates that are still available for mint.
    function getAvailableCoordinates() external view returns (ITokenDescriptor.Coordinate[] memory) {
        return _availableCoordinates;
    }

    /// @dev Returns the cartesian grid of where tokens are placed at within the grid.
    function getGrid() external view returns (uint256[NUM_COLUMNS][NUM_ROWS] memory) {
        return _grid;
    }

    /// @dev Returns the details of a token.
    function getToken(uint256 tokenId) external view returns (ITokenDescriptor.Token memory) {
        return tokenIdToTokenInfo[tokenId];
    }

    /// @dev Returns the details of all tokens.
    function getTokens() external view returns (ITokenDescriptor.Token[] memory) {
        ITokenDescriptor.Token[] memory tokens = new ITokenDescriptor.Token[](_totalSupply);

        for(uint256 i=0;i < _totalSupply;) {
            tokens[i] = tokenIdToTokenInfo[i+1];

            unchecked {
                ++i;
            }
        }

        return tokens;
    }
    
    /// @dev Returns if a wallet address/proof is part of the given merkle root.
    function checkMerkleProof(
        bytes32[] calldata merkleProof,
        address _address,
        bytes32 _root
    ) public pure returns (bool) {
        bytes32 leaf = keccak256(abi.encodePacked(_address));
        return MerkleProof.verify(merkleProof, _root, leaf);
    }

    /// @dev Returns the current price of the Dutch auction.
    function getCurrentPrice() public view returns (uint256) {      
        uint256 duration = config.endTime - config.startTime;
        uint256 halflife = 950; // adjust this to adjust speed of decay

        if (block.timestamp < config.startTime) {
            return config.startPriceInWei;
        }

        uint256 elapsedTime = ((block.timestamp - config.startTime) / 10 ) * 10;  
        if (elapsedTime >= duration) {
            return config.endPriceInWei;
        }

        // h/t artblocks for exponential decaying price math
        uint256 decayedPrice = config.startPriceInWei;
        // Divide by two (via bit-shifting) for the number of entirely completed
        // half-lives that have elapsed since auction start time.
        decayedPrice >>= elapsedTime / halflife;
        // Perform a linear interpolation between partial half-life points, to
        // approximate the current place on a perfect exponential decay curve.
        decayedPrice -= (decayedPrice * (elapsedTime % halflife)) / halflife / 2;
        if (decayedPrice < config.endPriceInWei) {
            // Price may not decay below stay `basePrice`.
            return config.endPriceInWei;
        }
        
        return (decayedPrice / 1000000000000000) * 1000000000000000;
    }

    /// @dev Returns the token ids that a wallet has ownership of.
    function tokensOfOwner(address _owner) public view returns (uint256[] memory) {
        uint256 balance = balanceOf(_owner);
        uint256[] memory tokens = new uint256[](balance);
        uint256 index;
        unchecked {
            for (uint256 i=1; i <= _totalSupply; i++) {
                if (ownerOf(i) == _owner) {
                    tokens[index] = i;
                    index++;
                }
            }
        }
        
        return tokens;
    }

    /// @dev Returns the tokenURI of the given token id.
    function tokenURI(uint256 id) public view virtual override returns (string memory) {
        if (ownerOf(id) == address(0)) {
            revert NotMinted();
        }

        ITokenDescriptor.Token memory token = tokenIdToTokenInfo[id];
        return descriptor.generateMetadata(id, token);
    }

    /// @dev Returns the total supply.
    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    function _mintWithChecks(ITokenDescriptor.Coordinate memory coordinate, address receiver) internal returns (bool) {        
        uint256 tokenId = currentTokenId;
        uint256 x = coordinate.x;
        uint256 y = coordinate.y;
        uint256 yIndex = _calculateYGridIndex(y); 

        if (_grid[yIndex][x] > 0) {
            return false;
        }

        bytes32 hash = _getCoordinateHash(ITokenDescriptor.Coordinate({x: x, y: y}));
        if (!_mintableCoordinates[hash]) {
            revert PositionNotMintable(x, y);
        }

        _grid[yIndex][x] = tokenId;
        tokenIdToTokenInfo[tokenId] = ITokenDescriptor.Token({
            initial: ITokenDescriptor.Coordinate({x: x, y: y}),
            current: ITokenDescriptor.Coordinate({x: x, y: y}),
            timestamp: block.timestamp,
            hasReachedEnd: false,
            isStar: false,
            direction: y >= 12 ? ITokenDescriptor.Direction.DOWN : ITokenDescriptor.Direction.UP,
            numMovements: 0
        });

        if (tokenId != MAX_SUPPLY) {
            currentTokenId++;
        } else {
            _closeMint();
        }
        
        _totalSupply++;
        _removeFromAvailability(_coordinateHashToIndex[hash]);
        _mint(receiver, tokenId);

        return true;
    }

    function _move(uint256 tokenId, int256 xDelta, int256 yDelta) private {
        if (msg.sender != ownerOf(tokenId)) {
            revert NotTokenOwner();
        }

        if (!canMove) {
            revert MovementLocked();
        }

        ITokenDescriptor.Token memory token = tokenIdToTokenInfo[tokenId];
        if (token.isStar) {
            revert MovementLocked();
        }

        uint256 x = token.current.x;
        if (xDelta == -1) {
            x--;
        } else if (xDelta == 1) {
            x++;
        }

        uint256 y = token.current.y;
        if (yDelta == -1) {
            y++;
        } else if (yDelta == 1) {
            y--;
        }

        if (!_isPositionWithinBounds(x, y, token.direction)) {
            revert PositionOutOfBounds(x,y);
        }

        uint256 yGridIndex = _calculateYGridIndex(y);
        if (_grid[yGridIndex][x] > 0) {
            revert PositionCurrentlyTaken(x,y);
        }

        _grid[_calculateYGridIndex(token.current.y)][token.current.x] = 0;
        _grid[yGridIndex][x] = tokenId;

        tokenIdToTokenInfo[tokenId].current = ITokenDescriptor.Coordinate({x: x, y: y});
        tokenIdToTokenInfo[tokenId].hasReachedEnd = ((token.direction == ITokenDescriptor.Direction.UP && y == (NUM_ROWS - 2)) || (token.direction == ITokenDescriptor.Direction.DOWN && y == 1));
        tokenIdToTokenInfo[tokenId].numMovements = ++token.numMovements;
        tokenIdToTokenInfo[tokenId].timestamp = block.timestamp;
    }

    function _closeMint() private {
        _isMintingClosed = true;
        canMove = true;
    }

    function _calculateYGridIndex(uint256 y) private pure returns (uint256) {
        return (NUM_ROWS - 1) - y;
    }

    function _getCoordinateHash(ITokenDescriptor.Coordinate memory coordinate) private pure returns (bytes32) {
        return keccak256(abi.encode(coordinate));
    }

    function _getDiscountedCurrentPrice(bytes32[] calldata merkleProof, address addressToCheck, uint256 currentPrice) private view returns (uint256) {
        bool isFp = checkMerkleProof(merkleProof, addressToCheck, fpMembersMerkleRoot);
        bool isPartner = checkMerkleProof(merkleProof, addressToCheck, holdersMerkleRoot);
        
        if (isFp) {
            currentPrice = (currentPrice * 75) / 100; // 25% off
        } else if (isPartner) {
            currentPrice = (currentPrice * 85) / 100; // 15% off
        }

        return currentPrice;
    }

    function _isPositionWithinBounds(uint256 x, uint256 y, ITokenDescriptor.Direction tokenDirection) private pure returns (bool) {
        if (x < 1 || x >= NUM_COLUMNS - 1) {
            return false;
        }

        if (tokenDirection == ITokenDescriptor.Direction.DOWN) {
            return y > 0;
        } else {
            return y < NUM_ROWS - 1;
        }
    }

    function _removeFromAvailability(uint256 index) private {
        uint256 lastCoordinateIndex = _availableCoordinates.length - 1;
        ITokenDescriptor.Coordinate memory lastCoordinate = _availableCoordinates[lastCoordinateIndex];
        ITokenDescriptor.Coordinate memory coordinateToBeRemoved = _availableCoordinates[index];

        _availableCoordinates[index] = lastCoordinate;
        _coordinateHashToIndex[_getCoordinateHash(lastCoordinate)] = index;
        delete _coordinateHashToIndex[_getCoordinateHash(coordinateToBeRemoved)];
        _availableCoordinates.pop();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

contract Constants {
    uint256 public constant NUM_ROWS = 25;
    uint256 public constant NUM_COLUMNS = 25;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.20;

/**
 * @dev These functions deal with verification of Merkle Tree proofs.
 *
 * The tree and the proofs can be generated using our
 * https://github.com/OpenZeppelin/merkle-tree[JavaScript library].
 * You will find a quickstart guide in the readme.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the Merkle tree could be reinterpreted as a leaf value.
 * OpenZeppelin's JavaScript library generates Merkle trees that are safe
 * against this attack out of the box.
 */
library MerkleProof {
    /**
     *@dev The multiproof provided is not valid.
     */
    error MerkleProofInvalidMultiproof();

    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Calldata version of {verify}
     */
    function verifyCalldata(bytes32[] calldata proof, bytes32 root, bytes32 leaf) internal pure returns (bool) {
        return processProofCalldata(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Calldata version of {processProof}
     */
    function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a Merkle tree defined by
     * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}.
     *
     * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details.
     */
    function multiProofVerify(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProof(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Calldata version of {multiProofVerify}
     *
     * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details.
     */
    function multiProofVerifyCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProofCalldata(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction
     * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another
     * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false
     * respectively.
     *
     * CAUTION: Not all Merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree
     * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the
     * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer).
     */
    function processMultiProof(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the Merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 proofLen = proof.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        if (leavesLen + proofLen != totalHashes + 1) {
            revert MerkleProofInvalidMultiproof();
        }

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i]
                ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++])
                : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            if (proofPos != proofLen) {
                revert MerkleProofInvalidMultiproof();
            }
            unchecked {
                return hashes[totalHashes - 1];
            }
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Calldata version of {processMultiProof}.
     *
     * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details.
     */
    function processMultiProofCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the Merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 proofLen = proof.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        if (leavesLen + proofLen != totalHashes + 1) {
            revert MerkleProofInvalidMultiproof();
        }

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i]
                ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++])
                : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            if (proofPos != proofLen) {
                revert MerkleProofInvalidMultiproof();
            }
            unchecked {
                return hashes[totalHashes - 1];
            }
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Sorts the pair (a, b) and hashes the result.
     */
    function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
        return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
    }

    /**
     * @dev Implementation of keccak256(abi.encode(a, b)) that doesn't allocate or expand memory.
     */
    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import {Constants} from "./Constants.sol";
import {ITokenDescriptor} from "./ITokenDescriptor.sol";
import {JsonWriter} from "solidity-json-writer/JsonWriter.sol";
import {Base64} from '@openzeppelin/contracts/utils/Base64.sol';
import {Strings} from "@openzeppelin/contracts/utils/Strings.sol";

contract Descriptor is ITokenDescriptor, Constants {
    using JsonWriter for JsonWriter.Json;

    function generateMetadata(uint256 tokenId, Token calldata token) 
        external 
        view 
        returns (string memory) 
    {
        JsonWriter.Json memory writer;
        writer = writer.writeStartObject();

        writer = writer.writeStringProperty(
            'name',
            string.concat('LINE ', Strings.toString(tokenId))
        );

        writer = writer.writeStringProperty(
            'description',
            'LINE is a dynamic photographic series of 250 tokens, each positioned within a meticulously crafted landscape of 625 coordinates. Tokens act like lenses, where location influences perception. They may cross this terrain while their paths intersect in time and space. By Figure31'
        );

        writer = writer.writeStringProperty(
            'external_url',
            'https://line.fingerprintsdao.xyz'
        );

        uint256 currentImageIndex = _getCurrentPanoramicImageIndex(token);
        writer = writer.writeStringProperty(
            'image',
            string.concat('ar://Y-05cY1jiKkVn9aCL3Di3sOWfCUZRPLaoASs0LYJOsU/', Strings.toString(currentImageIndex), '.jpg')
        );

        writer = _generateAttributes(writer, token);

        writer = writer.writeEndObject();

        return string(
            abi.encodePacked(
                'data:application/json;base64,',
                Base64.encode(abi.encodePacked(writer.value))
            )
        );
    }

    function _determineCurrentImagePoint(Token calldata token)
        private
        view
        returns (uint256, uint256)
    {
        uint256 numDaysPassed = (block.timestamp - token.timestamp) / 1 days;
        uint256 numPanoramicPoints;

        if (!token.isStar) {
            numPanoramicPoints = 10; // 180° panoramic view
        } else {
            numPanoramicPoints = 16; // 360° panoramic view
        }

        uint256 panoramicPoint = numDaysPassed % numPanoramicPoints;

        // is at the origin point for the day
        if (panoramicPoint % 2 == 0) {
            return (token.current.x, token.current.y);            
        }

        uint256 x;
        uint256 y;

        // full panoramic view
        // 1 = west
        // 3 = northwest
        // 5 = north
        // 7 = northeast
        // 9 = east
        // 11 = southeast
        // 13 = south
        // 15 = southwest
        if (token.isStar) {
            if (panoramicPoint == 1) {
                x = token.current.x - 1;
                y = token.current.y;
            } else if (panoramicPoint == 3) {
                x = token.current.x - 1;
                y = token.current.y + 1;
            } else if (panoramicPoint == 5) {
                x = token.current.x;
                y = token.current.y + 1;
            } else if (panoramicPoint == 7) {
                x = token.current.x + 1;
                y = token.current.y + 1;
            } else if (panoramicPoint == 9) {
                x = token.current.x + 1;
                y = token.current.y;
            } else if (panoramicPoint == 11) {
                x = token.current.x + 1;
                y = token.current.y - 1;
            } else if (panoramicPoint == 13) {
                x = token.current.x;
                y = token.current.y - 1;
            } else if (panoramicPoint == 15) {
                x = token.current.x - 1;
                y = token.current.y - 1;
            }

            return (x,y);
        }

        // 1 = look west
        // 3 = look southwest
        // 5 = look south
        // 7 = look southeast
        // 9 = look east
        if (token.direction == Direction.DOWN) {
            if (panoramicPoint == 1) {
                x = token.current.x - 1;
                y = token.current.y;
            } else if (panoramicPoint == 3) {
                x = token.current.x - 1;
                y = token.current.y - 1;
            } else if (panoramicPoint == 5) {
                x = token.current.x;
                y = token.current.y - 1;
            } else if (panoramicPoint == 7) {
                x = token.current.x + 1;
                y = token.current.y - 1;
            } else if (panoramicPoint == 9) {
                x = token.current.x + 1;
                y = token.current.y;
            }
        }
        
        // 1 = look west
        // 3 = look northwest
        // 5 = look north
        // 7 = look northeast
        // 9 = look east
        if (token.direction == Direction.UP) {
            if (panoramicPoint == 1) {
                x = token.current.x - 1;
                y = token.current.y;
            } else if (panoramicPoint == 3) {
                x = token.current.x - 1;
                y = token.current.y + 1;
            } else if (panoramicPoint == 5) {
                x = token.current.x;
                y = token.current.y + 1;
            } else if (panoramicPoint == 7) {
                x = token.current.x + 1;
                y = token.current.y + 1;
            } else if (panoramicPoint == 9) {
                x = token.current.x + 1;
                y = token.current.y;
            }
        }

        return (x,y);
    }

    function _getCurrentPanoramicImageIndex(Token calldata token) 
        private
        view
        returns (uint256) 
    {
        (uint256 x, uint256 y) = _determineCurrentImagePoint(token);
        return _calculateImageIndex(x, y);
    }
    
    function _calculateImageIndex(uint256 x, uint256 y)
        private
        pure
        returns (uint256) 
    {
        uint256 yIndex = (NUM_ROWS - 1) - y;
        return ((NUM_ROWS - yIndex - 1) * NUM_COLUMNS) + x;
    }

    function _generateAttributes(JsonWriter.Json memory _writer, Token calldata token) 
        private 
        view 
        returns (JsonWriter.Json memory writer)
    {
        writer = _writer.writeStartArray('attributes');

        (uint256 imagePointX, uint256 imagePointY) = _determineCurrentImagePoint(token);
        writer = _addStringAttribute(writer, 'Origin Point', string.concat(Strings.toString(token.current.x), ',', Strings.toString(token.current.y)));
        writer = _addStringAttribute(writer, 'Image Point', string.concat(Strings.toString(imagePointX), ',', Strings.toString(imagePointY)));
        writer = _addStringAttribute(writer, 'Type', token.direction == Direction.UP ? 'Up' : 'Down');
        writer = _addStringAttribute(writer, 'Starting Point', string.concat(Strings.toString(token.initial.x), ',', Strings.toString(token.initial.y)));
        writer = _addStringAttribute(writer, 'Has Reached End', token.hasReachedEnd == true ? 'Yes' : 'No');
        writer = _addStringAttribute(writer, 'Is Star', token.isStar == true ? 'Yes' : 'No');
        writer = _addStringAttribute(writer, 'Movements', Strings.toString(token.numMovements));

        writer = writer.writeEndArray();
    }

    function _addStringAttribute(
        JsonWriter.Json memory _writer,
        string memory key,
        string memory value
    ) private pure returns (JsonWriter.Json memory writer) {
        writer = _writer.writeStartObject();
        writer = writer.writeStringProperty('trait_type', key);
        writer = writer.writeStringProperty('value', value);
        writer = writer.writeEndObject();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

interface ITokenDescriptor {
    enum Direction {
        UP,
        DOWN
    }

    struct Coordinate {
        uint256 x;
        uint256 y;
    }

    struct Token {
        Coordinate initial;
        Coordinate current;
        uint256 timestamp;
        bool hasReachedEnd;
        bool isStar;
        Direction direction;
        uint256 numMovements;
    }

    function generateMetadata(uint256 tokenId, ITokenDescriptor.Token calldata token)
        external
        view
        returns (string memory);
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Modern, minimalist, and gas efficient ERC-721 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC721.sol)
abstract contract ERC721 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 indexed id);

    event Approval(address indexed owner, address indexed spender, uint256 indexed id);

    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /*//////////////////////////////////////////////////////////////
                         METADATA STORAGE/LOGIC
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    function tokenURI(uint256 id) public view virtual returns (string memory);

    /*//////////////////////////////////////////////////////////////
                      ERC721 BALANCE/OWNER STORAGE
    //////////////////////////////////////////////////////////////*/

    mapping(uint256 => address) internal _ownerOf;

    mapping(address => uint256) internal _balanceOf;

    function ownerOf(uint256 id) public view virtual returns (address owner) {
        require((owner = _ownerOf[id]) != address(0), "NOT_MINTED");
    }

    function balanceOf(address owner) public view virtual returns (uint256) {
        require(owner != address(0), "ZERO_ADDRESS");

        return _balanceOf[owner];
    }

    /*//////////////////////////////////////////////////////////////
                         ERC721 APPROVAL STORAGE
    //////////////////////////////////////////////////////////////*/

    mapping(uint256 => address) public getApproved;

    mapping(address => mapping(address => bool)) public isApprovedForAll;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(string memory _name, string memory _symbol) {
        name = _name;
        symbol = _symbol;
    }

    /*//////////////////////////////////////////////////////////////
                              ERC721 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 id) public virtual {
        address owner = _ownerOf[id];

        require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED");

        getApproved[id] = spender;

        emit Approval(owner, spender, id);
    }

    function setApprovalForAll(address operator, bool approved) public virtual {
        isApprovedForAll[msg.sender][operator] = approved;

        emit ApprovalForAll(msg.sender, operator, approved);
    }

    function transferFrom(
        address from,
        address to,
        uint256 id
    ) public virtual {
        require(from == _ownerOf[id], "WRONG_FROM");

        require(to != address(0), "INVALID_RECIPIENT");

        require(
            msg.sender == from || isApprovedForAll[from][msg.sender] || msg.sender == getApproved[id],
            "NOT_AUTHORIZED"
        );

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        unchecked {
            _balanceOf[from]--;

            _balanceOf[to]++;
        }

        _ownerOf[id] = to;

        delete getApproved[id];

        emit Transfer(from, to, id);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 id
    ) public virtual {
        transferFrom(from, to, id);

        require(
            to.code.length == 0 ||
                ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
                ERC721TokenReceiver.onERC721Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        bytes calldata data
    ) public virtual {
        transferFrom(from, to, id);

        require(
            to.code.length == 0 ||
                ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, data) ==
                ERC721TokenReceiver.onERC721Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    /*//////////////////////////////////////////////////////////////
                              ERC165 LOGIC
    //////////////////////////////////////////////////////////////*/

    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return
            interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
            interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
            interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 id) internal virtual {
        require(to != address(0), "INVALID_RECIPIENT");

        require(_ownerOf[id] == address(0), "ALREADY_MINTED");

        // Counter overflow is incredibly unrealistic.
        unchecked {
            _balanceOf[to]++;
        }

        _ownerOf[id] = to;

        emit Transfer(address(0), to, id);
    }

    function _burn(uint256 id) internal virtual {
        address owner = _ownerOf[id];

        require(owner != address(0), "NOT_MINTED");

        // Ownership check above ensures no underflow.
        unchecked {
            _balanceOf[owner]--;
        }

        delete _ownerOf[id];

        delete getApproved[id];

        emit Transfer(owner, address(0), id);
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL SAFE MINT LOGIC
    //////////////////////////////////////////////////////////////*/

    function _safeMint(address to, uint256 id) internal virtual {
        _mint(to, id);

        require(
            to.code.length == 0 ||
                ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") ==
                ERC721TokenReceiver.onERC721Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    function _safeMint(
        address to,
        uint256 id,
        bytes memory data
    ) internal virtual {
        _mint(to, id);

        require(
            to.code.length == 0 ||
                ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, data) ==
                ERC721TokenReceiver.onERC721Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }
}

/// @notice A generic interface for a contract which properly accepts ERC721 tokens.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC721.sol)
abstract contract ERC721TokenReceiver {
    function onERC721Received(
        address,
        address,
        uint256,
        bytes calldata
    ) external virtual returns (bytes4) {
        return ERC721TokenReceiver.onERC721Received.selector;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.20;

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

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is specified at deployment time in the constructor for `Ownable`. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

    event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        if (pendingOwner() != sender) {
            revert OwnableUnauthorizedAccount(sender);
        }
        _transferOwnership(sender);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

import {ERC20} from "../tokens/ERC20.sol";

/// @notice Safe ETH and ERC20 transfer library that gracefully handles missing return values.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SafeTransferLib.sol)
/// @dev Use with caution! Some functions in this library knowingly create dirty bits at the destination of the free memory pointer.
/// @dev Note that none of the functions in this library check that a token has code at all! That responsibility is delegated to the caller.
library SafeTransferLib {
    /*//////////////////////////////////////////////////////////////
                             ETH OPERATIONS
    //////////////////////////////////////////////////////////////*/

    function safeTransferETH(address to, uint256 amount) internal {
        bool success;

        /// @solidity memory-safe-assembly
        assembly {
            // Transfer the ETH and store if it succeeded or not.
            success := call(gas(), to, amount, 0, 0, 0, 0)
        }

        require(success, "ETH_TRANSFER_FAILED");
    }

    /*//////////////////////////////////////////////////////////////
                            ERC20 OPERATIONS
    //////////////////////////////////////////////////////////////*/

    function safeTransferFrom(
        ERC20 token,
        address from,
        address to,
        uint256 amount
    ) internal {
        bool success;

        /// @solidity memory-safe-assembly
        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata into memory, beginning with the function selector.
            mstore(freeMemoryPointer, 0x23b872dd00000000000000000000000000000000000000000000000000000000)
            mstore(add(freeMemoryPointer, 4), and(from, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "from" argument.
            mstore(add(freeMemoryPointer, 36), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "to" argument.
            mstore(add(freeMemoryPointer, 68), amount) // Append the "amount" argument. Masking not required as it's a full 32 byte type.

            success := and(
                // Set success to whether the call reverted, if not we check it either
                // returned exactly 1 (can't just be non-zero data), or had no return data.
                or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())),
                // We use 100 because the length of our calldata totals up like so: 4 + 32 * 3.
                // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space.
                // Counterintuitively, this call must be positioned second to the or() call in the
                // surrounding and() call or else returndatasize() will be zero during the computation.
                call(gas(), token, 0, freeMemoryPointer, 100, 0, 32)
            )
        }

        require(success, "TRANSFER_FROM_FAILED");
    }

    function safeTransfer(
        ERC20 token,
        address to,
        uint256 amount
    ) internal {
        bool success;

        /// @solidity memory-safe-assembly
        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata into memory, beginning with the function selector.
            mstore(freeMemoryPointer, 0xa9059cbb00000000000000000000000000000000000000000000000000000000)
            mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "to" argument.
            mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. Masking not required as it's a full 32 byte type.

            success := and(
                // Set success to whether the call reverted, if not we check it either
                // returned exactly 1 (can't just be non-zero data), or had no return data.
                or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())),
                // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2.
                // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space.
                // Counterintuitively, this call must be positioned second to the or() call in the
                // surrounding and() call or else returndatasize() will be zero during the computation.
                call(gas(), token, 0, freeMemoryPointer, 68, 0, 32)
            )
        }

        require(success, "TRANSFER_FAILED");
    }

    function safeApprove(
        ERC20 token,
        address to,
        uint256 amount
    ) internal {
        bool success;

        /// @solidity memory-safe-assembly
        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata into memory, beginning with the function selector.
            mstore(freeMemoryPointer, 0x095ea7b300000000000000000000000000000000000000000000000000000000)
            mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Append and mask the "to" argument.
            mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. Masking not required as it's a full 32 byte type.

            success := and(
                // Set success to whether the call reverted, if not we check it either
                // returned exactly 1 (can't just be non-zero data), or had no return data.
                or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())),
                // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2.
                // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space.
                // Counterintuitively, this call must be positioned second to the or() call in the
                // surrounding and() call or else returndatasize() will be zero during the computation.
                call(gas(), token, 0, freeMemoryPointer, 68, 0, 32)
            )
        }

        require(success, "APPROVE_FAILED");
    }
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

library JsonWriter {

    using JsonWriter for string;

    struct Json {
        int256 depthBitTracker;
        string value;
    }

    bytes1 constant BACKSLASH = bytes1(uint8(92));
    bytes1 constant BACKSPACE = bytes1(uint8(8));
    bytes1 constant CARRIAGE_RETURN = bytes1(uint8(13));
    bytes1 constant DOUBLE_QUOTE = bytes1(uint8(34));
    bytes1 constant FORM_FEED = bytes1(uint8(12));
    bytes1 constant FRONTSLASH = bytes1(uint8(47));
    bytes1 constant HORIZONTAL_TAB = bytes1(uint8(9));
    bytes1 constant NEWLINE = bytes1(uint8(10));

    string constant TRUE = "true";
    string constant FALSE = "false";
    bytes1 constant OPEN_BRACE = "{";
    bytes1 constant CLOSED_BRACE = "}";
    bytes1 constant OPEN_BRACKET = "[";
    bytes1 constant CLOSED_BRACKET = "]";
    bytes1 constant LIST_SEPARATOR = ",";

    int256 constant MAX_INT256 = type(int256).max;

    /**
     * @dev Writes the beginning of a JSON array.
     */
    function writeStartArray(Json memory json) 
        internal
        pure
        returns (Json memory)
    {
        return writeStart(json, OPEN_BRACKET);
    }

    /**
     * @dev Writes the beginning of a JSON array with a property name as the key.
     */
    function writeStartArray(Json memory json, string memory propertyName)
        internal
        pure
        returns (Json memory)
    {
        return writeStart(json, propertyName, OPEN_BRACKET);
    }

    /**
     * @dev Writes the beginning of a JSON object.
     */
    function writeStartObject(Json memory json)
        internal
        pure
        returns (Json memory)
    {
        return writeStart(json, OPEN_BRACE);
    }

    /**
     * @dev Writes the beginning of a JSON object with a property name as the key.
     */
    function writeStartObject(Json memory json, string memory propertyName)
        internal
        pure
        returns (Json memory)
    {
        return writeStart(json, propertyName, OPEN_BRACE);
    }

    /**
     * @dev Writes the end of a JSON array.
     */
    function writeEndArray(Json memory json)
        internal
        pure
        returns (Json memory)
    {
        return writeEnd(json, CLOSED_BRACKET);
    }

    /**
     * @dev Writes the end of a JSON object.
     */
    function writeEndObject(Json memory json)
        internal
        pure
        returns (Json memory)
    {
        return writeEnd(json, CLOSED_BRACE);
    }

    /**
     * @dev Writes the property name and address value (as a JSON string) as part of a name/value pair of a JSON object.
     */
    function writeAddressProperty(
        Json memory json,
        string memory propertyName,
        address value
    ) internal pure returns (Json memory) {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', propertyName, '": "', addressToString(value), '"'));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', propertyName, '": "', addressToString(value), '"'));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the address value (as a JSON string) as an element of a JSON array.
     */
    function writeAddressValue(Json memory json, address value)
        internal
        pure
        returns (Json memory)
    {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', addressToString(value), '"'));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', addressToString(value), '"'));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the property name and boolean value (as a JSON literal "true" or "false") as part of a name/value pair of a JSON object.
     */
    function writeBooleanProperty(
        Json memory json,
        string memory propertyName,
        bool value
    ) internal pure returns (Json memory) {
        string memory strValue;
        if (value) {
            strValue = TRUE;
        } else {
            strValue = FALSE;
        }

        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', propertyName, '": ', strValue));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', propertyName, '": ', strValue));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the boolean value (as a JSON literal "true" or "false") as an element of a JSON array.
     */
    function writeBooleanValue(Json memory json, bool value)
        internal
        pure
        returns (Json memory)
    {
        string memory strValue;
        if (value) {
            strValue = TRUE;
        } else {
            strValue = FALSE;
        }

        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, strValue));
        } else {
            json.value = string(abi.encodePacked(json.value, strValue));
        }
        
        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the property name and int value (as a JSON number) as part of a name/value pair of a JSON object.
     */
    function writeIntProperty(
        Json memory json,
        string memory propertyName,
        int256 value
    ) internal pure returns (Json memory) {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', propertyName, '": ', intToString(value)));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', propertyName, '": ', intToString(value)));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the int value (as a JSON number) as an element of a JSON array.
     */
    function writeIntValue(Json memory json, int256 value)
        internal
        pure
        returns (Json memory)
    {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, intToString(value)));
        } else {
            json.value = string(abi.encodePacked(json.value, intToString(value)));
        }
        
        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the property name and value of null as part of a name/value pair of a JSON object.
     */
    function writeNullProperty(Json memory json, string memory propertyName)
        internal
        pure
        returns (Json memory)
    {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', propertyName, '": null'));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', propertyName, '": null'));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the value of null as an element of a JSON array.
     */
    function writeNullValue(Json memory json)
        internal
        pure
        returns (Json memory)
    {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, "null"));
        } else {
            json.value = string(abi.encodePacked(json.value, "null"));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the string text value (as a JSON string) as an element of a JSON array.
     */
    function writeStringProperty(
        Json memory json,
        string memory propertyName,
        string memory value
    ) internal pure returns (Json memory) {
        string memory jsonEscapedString = escapeJsonString(value);
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', propertyName, '": "', jsonEscapedString, '"'));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', propertyName, '": "', jsonEscapedString, '"'));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the property name and string text value (as a JSON string) as part of a name/value pair of a JSON object.
     */
    function writeStringValue(Json memory json, string memory value)
        internal
        pure
        returns (Json memory)
    {
        string memory jsonEscapedString = escapeJsonString(value);
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', jsonEscapedString, '"'));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', jsonEscapedString, '"'));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the property name and uint value (as a JSON number) as part of a name/value pair of a JSON object.
     */
    function writeUintProperty(
        Json memory json,
        string memory propertyName,
        uint256 value
    ) internal pure returns (Json memory) {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', propertyName, '": ', uintToString(value)));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', propertyName, '": ', uintToString(value)));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the uint value (as a JSON number) as an element of a JSON array.
     */
    function writeUintValue(Json memory json, uint256 value)
        internal
        pure
        returns (Json memory)
    {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, uintToString(value)));
        } else {
            json.value = string(abi.encodePacked(json.value, uintToString(value)));
        }

        json.depthBitTracker = setListSeparatorFlag(json);

        return json;
    }

    /**
     * @dev Writes the beginning of a JSON array or object based on the token parameter.
     */
    function writeStart(Json memory json, bytes1 token)
        private
        pure
        returns (Json memory)
    {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, token));
        } else {
            json.value = string(abi.encodePacked(json.value, token));
        }

        json.depthBitTracker &= MAX_INT256;
        json.depthBitTracker++;

        return json;
    }

    /**
     * @dev Writes the beginning of a JSON array or object based on the token parameter with a property name as the key.
     */
    function writeStart(
        Json memory json,
        string memory propertyName,
        bytes1 token
    ) private pure returns (Json memory) {
        if (json.depthBitTracker < 0) {
            json.value = string(abi.encodePacked(json.value, LIST_SEPARATOR, '"', propertyName, '": ', token));
        } else {
            json.value = string(abi.encodePacked(json.value, '"', propertyName, '": ', token));
        }

        json.depthBitTracker &= MAX_INT256;
        json.depthBitTracker++;

        return json;
    }

    /**
     * @dev Writes the end of a JSON array or object based on the token parameter.
     */
    function writeEnd(Json memory json, bytes1 token)
        private
        pure
        returns (Json memory)
    {
        json.value = string(abi.encodePacked(json.value, token));
        json.depthBitTracker = setListSeparatorFlag(json);
        
        if (getCurrentDepth(json) != 0) {
            json.depthBitTracker--;
        }

        return json;
    }

    /**
     * @dev Escapes any characters that required by JSON to be escaped.
     */
    function escapeJsonString(string memory value)
        private
        pure
        returns (string memory str)
    {
        bytes memory b = bytes(value);
        bool foundEscapeChars;

        for (uint256 i; i < b.length; i++) {
            if (b[i] == BACKSLASH) {
                foundEscapeChars = true;
                break;
            } else if (b[i] == DOUBLE_QUOTE) {
                foundEscapeChars = true;
                break;
            } else if (b[i] == FRONTSLASH) {
                foundEscapeChars = true;
                break;
            } else if (b[i] == HORIZONTAL_TAB) {
                foundEscapeChars = true;
                break;
            } else if (b[i] == FORM_FEED) {
                foundEscapeChars = true;
                break;
            } else if (b[i] == NEWLINE) {
                foundEscapeChars = true;
                break;
            } else if (b[i] == CARRIAGE_RETURN) {
                foundEscapeChars = true;
                break;
            } else if (b[i] == BACKSPACE) {
                foundEscapeChars = true;
                break;
            }
        }

        if (!foundEscapeChars) {
            return value;
        }

        for (uint256 i; i < b.length; i++) {
            if (b[i] == BACKSLASH) {
                str = string(abi.encodePacked(str, "\\\\"));
            } else if (b[i] == DOUBLE_QUOTE) {
                str = string(abi.encodePacked(str, '\\"'));
            } else if (b[i] == FRONTSLASH) {
                str = string(abi.encodePacked(str, "\\/"));
            } else if (b[i] == HORIZONTAL_TAB) {
                str = string(abi.encodePacked(str, "\\t"));
            } else if (b[i] == FORM_FEED) {
                str = string(abi.encodePacked(str, "\\f"));
            } else if (b[i] == NEWLINE) {
                str = string(abi.encodePacked(str, "\\n"));
            } else if (b[i] == CARRIAGE_RETURN) {
                str = string(abi.encodePacked(str, "\\r"));
            } else if (b[i] == BACKSPACE) {
                str = string(abi.encodePacked(str, "\\b"));
            } else {
                str = string(abi.encodePacked(str, b[i]));
            }
        }

        return str;
    }

    /**
     * @dev Tracks the recursive depth of the nested objects / arrays within the JSON text
     * written so far. This provides the depth of the current token.
     */
    function getCurrentDepth(Json memory json) private pure returns (int256) {
        return json.depthBitTracker & MAX_INT256;
    }

    /**
     * @dev The highest order bit of json.depthBitTracker is used to discern whether we are writing the first item in a list or not.
     * if (json.depthBitTracker >> 255) == 1, add a list separator before writing the item
     * else, no list separator is needed since we are writing the first item.
     */
    function setListSeparatorFlag(Json memory json)
        private
        pure
        returns (int256)
    {
        return json.depthBitTracker | (int256(1) << 255);
    }

        /**
     * @dev Converts an address to a string.
     */
    function addressToString(address _address)
        internal
        pure
        returns (string memory)
    {
        bytes32 value = bytes32(uint256(uint160(_address)));
        bytes16 alphabet = "0123456789abcdef";

        bytes memory str = new bytes(42);
        str[0] = "0";
        str[1] = "x";
        for (uint256 i; i < 20; i++) {
            str[2 + i * 2] = alphabet[uint8(value[i + 12] >> 4)];
            str[3 + i * 2] = alphabet[uint8(value[i + 12] & 0x0f)];
        }

        return string(str);
    }

    /**
     * @dev Converts an int to a string.
     */
    function intToString(int256 i) internal pure returns (string memory) {
        if (i == 0) {
            return "0";
        }

        if (i == type(int256).min) {
            // hard-coded since int256 min value can't be converted to unsigned
            return "-57896044618658097711785492504343953926634992332820282019728792003956564819968"; 
        }

        bool negative = i < 0;
        uint256 len;
        uint256 j;
        if(!negative) {
            j = uint256(i);
        } else {
            j = uint256(-i);
            ++len; // make room for '-' sign
        }
        
        uint256 l = j;
        while (j != 0) {
            len++;
            j /= 10;
        }

        bytes memory bstr = new bytes(len);
        uint256 k = len;
        while (l != 0) {
            bstr[--k] = bytes1((48 + uint8(l - (l / 10) * 10)));
            l /= 10;
        }

        if (negative) {
            bstr[0] = "-"; // prepend '-'
        }

        return string(bstr);
    }

    /**
     * @dev Converts a uint to a string.
     */
    function uintToString(uint256 _i) internal pure returns (string memory) {
        if (_i == 0) {
            return "0";
        }

        uint256 j = _i;
        uint256 len;
        while (j != 0) {
            len++;
            j /= 10;
        }

        bytes memory bstr = new bytes(len);
        uint256 k = len;
        while (_i != 0) {
            bstr[--k] = bytes1((48 + uint8(_i - (_i / 10) * 10)));
            _i /= 10;
        }

        return string(bstr);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Base64.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides a set of functions to operate with Base64 strings.
 */
library Base64 {
    /**
     * @dev Base64 Encoding/Decoding Table
     */
    string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    /**
     * @dev Converts a `bytes` to its Bytes64 `string` representation.
     */
    function encode(bytes memory data) internal pure returns (string memory) {
        /**
         * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence
         * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol
         */
        if (data.length == 0) return "";

        // Loads the table into memory
        string memory table = _TABLE;

        // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter
        // and split into 4 numbers of 6 bits.
        // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up
        // - `data.length + 2`  -> Round up
        // - `/ 3`              -> Number of 3-bytes chunks
        // - `4 *`              -> 4 characters for each chunk
        string memory result = new string(4 * ((data.length + 2) / 3));

        /// @solidity memory-safe-assembly
        assembly {
            // Prepare the lookup table (skip the first "length" byte)
            let tablePtr := add(table, 1)

            // Prepare result pointer, jump over length
            let resultPtr := add(result, 32)

            // Run over the input, 3 bytes at a time
            for {
                let dataPtr := data
                let endPtr := add(data, mload(data))
            } lt(dataPtr, endPtr) {

            } {
                // Advance 3 bytes
                dataPtr := add(dataPtr, 3)
                let input := mload(dataPtr)

                // To write each character, shift the 3 bytes (18 bits) chunk
                // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)
                // and apply logical AND with 0x3F which is the number of
                // the previous character in the ASCII table prior to the Base64 Table
                // The result is then added to the table to get the character to write,
                // and finally write it in the result pointer but with a left shift
                // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits

                mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance
            }

            // When data `bytes` is not exactly 3 bytes long
            // it is padded with `=` characters at the end
            switch mod(mload(data), 3)
            case 1 {
                mstore8(sub(resultPtr, 1), 0x3d)
                mstore8(sub(resultPtr, 2), 0x3d)
            }
            case 2 {
                mstore8(sub(resultPtr, 1), 0x3d)
            }
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol)

pragma solidity ^0.8.20;

import {Math} from "./math/Math.sol";
import {SignedMath} from "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant HEX_DIGITS = "0123456789abcdef";
    uint8 private constant ADDRESS_LENGTH = 20;

    /**
     * @dev The `value` string doesn't fit in the specified `length`.
     */
    error StringsInsufficientHexLength(uint256 value, uint256 length);

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toStringSigned(int256 value) internal pure returns (string memory) {
        return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        uint256 localValue = value;
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = HEX_DIGITS[localValue & 0xf];
            localValue >>= 4;
        }
        if (localValue != 0) {
            revert StringsInsufficientHexLength(value, length);
        }
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
     * representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(address indexed owner, address indexed spender, uint256 amount);

    /*//////////////////////////////////////////////////////////////
                            METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*//////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*//////////////////////////////////////////////////////////////
                            EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*//////////////////////////////////////////////////////////////
                               ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*//////////////////////////////////////////////////////////////
                             EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Muldiv operation overflow.
     */
    error MathOverflowedMulDiv();

    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            return a / b;
        }

        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0 = x * y; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            if (denominator <= prod1) {
                revert MathOverflowedMulDiv();
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

{
  "remappings": [
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "solidity-json-writer/=lib/solidity-json-writer/contracts/",
    "solmate/=lib/solmate/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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00000000000000000000000018d989a5d0ab92ed19aba879e4cac3735f8685c9

-----Decoded View---------------
Arg [0] : _descriptor (address): 0x18d989A5D0ab92ED19aBA879e4CaC3735f8685c9

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000018d989a5d0ab92ed19aba879e4cac3735f8685c9