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Contract

0x177239466A3302e757662dF072FCFD9D1c6acC19
 

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Withdraw All212717192024-11-26 11:47:35350 days ago1732621655IN
0x17723946...D1c6acC19
0 ETH0.0012072416.63105199
Deposit204344562024-08-01 15:00:59467 days ago1722524459IN
0x17723946...D1c6acC19
0 ETH0.0014243413.50449447
Deposit204331172024-08-01 10:31:35467 days ago1722508295IN
0x17723946...D1c6acC19
0 ETH0.000644534.61503207

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x77914048...133846Dbf
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
Sale

Compiler Version
v0.8.20+commit.a1b79de6

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion, None license

Contract Source Code (Solidity Standard Json-Input format)

// SPDX-License-Identifier: None
// Developed by Liteflow.com
pragma solidity 0.8.20;

import '@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol';
import '@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol';
import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';

/**
 * @notice Sale Contract
 */
contract Sale is Ownable, ReentrancyGuard {
    using SafeERC20 for IERC20Metadata;

    /**
     * Events
     */

    /**
     * @notice Deposit event
     */
    event Deposit(
        address indexed account,
        uint256 amount,
        uint8 tierLevel,
        uint256 fees
    );

    /**
     * @notice Refund event
     */
    event Refund(
        address indexed account,
        uint256 winningAmount,
        uint256 loosingAmount
    );

    /**
     * @notice Claim event
     */
    event Claim(
        address indexed account,
        uint256 claimedAmountInToken,
        uint256 refundedAmountInCurrency
    );

    /**
     * Errors
     */

    /**
     * @notice Thrown when sale is full
     */
    error HardCapReached();

    /**
     * @notice Thrown when the deposit period is closed
     */
    error DepositClosed();

    /**
     * @notice Thrown when the refund period is closed
     */
    error RefundClosed();

    /**
     * @notice Thrown when the claim period is closed
     */
    error ClaimClosed();

    /**
     * @notice Thrown when the signature is invalid
     */
    error InvalidSignature();

    /**
     * @notice Thrown when the tier limit is reached
     */
    error TierLimitReached();

    /**
     * @notice Thrown when the amount to transfer is zero
     */
    error NothingToTransfer();

    /**
     * @notice Thrown when the user has already claimed
     */
    error AlreadyClaimed();

    /**
     * @notice Thrown when the user has been already refunded
     */
    error AlreadyRefunded();

    /**
     * @notice Thrown when the dates are invalid
     */
    error InvalidDates();

    /**
     * @notice Thrown when the amount does not respect the deposit increment
     */
    error InvalidIncrement();

    /**
     * @notice Thrown when the winning and loosing amounts are not equal to the deposit amount
     */
    error InvalidAmounts();

    /**
     * @notice Thrown when the total winning amount is reached
     */
    error TotalWinningAmountReached();

    /**
     * @notice Thrown when owner want to withdraw but the claim or refund periods are still open
     */
    error WithdrawClosed();

    /**
     * @notice Thrown when the owner try to change the claim or refund config but it is already set
     */
    error ConfigAlreadySet();

    /**
     * @notice Thrown when the config is not set but required
     */
    error ConfigNotSet();

    /**
     * @notice Thrown when the owner try to withdraw winning amount and fees but it was already done
     */
    error AlreadyWithdrawnWinningAmountAndFees();

    /**
     * Authorizer configuration
     */

    /**
     * @notice The authorizer wallet
     */
    address public authorizer;

    /**
     * Deposit configuration
     */

    /**
     * @notice The token to use to participate in the sale
     */
    IERC20Metadata public immutable currencyToken;

    /**
     * @notice The maximum total amount of token to purchase. In currency token.
     */
    uint256 public immutable hardCap;

    /**
     * @notice The limit of each tier. In currency token.
     */
    uint256[] private tiersLimit;

    /**
     * @notice The fees of each tier. In basis point.
     */
    uint16[] private tiersFeesBasisPoint;

    /**
     * @notice The start date of the deposit period
     */
    uint32 public immutable depositStartDate;

    /**
     * @notice The end date of the deposit period
     */
    uint32 public immutable depositEndDate;

    /**
     * @notice The increment in which the deposit amount can be specify. In currency token.
     */
    uint256 public immutable depositIncrement;

    /**
     * Claim configuration
     */

    /**
     * @notice The token to claim
     * @dev If set to the zero address, the claim is not activated yet.
     */
    IERC20Metadata public token;

    /**
     * @notice The numerator price of the token in currency token.
     */
    uint256 public tokenPriceNumerator;

    /**
     * @notice The denominator price of the token in currency token.
     */
    uint256 public tokenPriceDenominator;

    /**
     * @notice The start date of the claim period
     * @dev If set to 0, the claim is not activated yet.
     */
    uint32 public claimStartDate;

    /**
     * @notice The end date of the claim period
     */
    uint32 public claimEndDate;

    /**
     * @notice The vesting end date of the claim period. All token are claimable at this date.
     */
    uint32 public claimVestingEndDate;

    /**
     * @notice The vesting cliff in basis point of token claimable at the claim start date. The rest will be unlocked linearly until the claimVestingEndDate.
     */
    uint16 public claimVestingCliffBasisPoint;

    /**
     * @notice The total amount of currency tokens that can be claim for tokens.
     */
    uint256 public totalWinningAmount;

    /**
     * Refund configuration
     */

    /**
     * @notice The start date of the refund period
     * @dev If set to 0, the refund is not activated yet.
     */
    uint32 public refundStartDate;

    /**
     * @notice The end date of the refund period
     */
    uint32 public refundEndDate;

    /**
     * State managed by the contract
     */

    /**
     * @notice The total amount of currency tokens deposited.
     * @dev Managed by the contract
     */
    uint256 public totalDepositedAmount;

    /**
     * @notice The total amount of currency tokens claimed.
     * @dev Managed by the contract
     */
    uint256 public totalClaimedAmount;

    /**
     * @notice The total winning amount of currency tokens refunded.
     * @dev Managed by the contract
     */
    uint256 public totalRefundedWinningAmount;

    /**
     * @notice The total loosing amount of currency tokens refunded.
     * @dev Managed by the contract
     */
    uint256 public totalRefundedLoosingAmount;

    /**
     * @notice The total fees of currency tokens deposited.
     * @dev Managed by the contract
     */
    uint256 public totalFees;

    /**
     * @notice The deposited amount for each user.
     * @dev Managed by the contract
     */
    mapping(address account => uint256 amount) private deposits;

    /**
     * @notice Track claimed amount for each user.
     * @dev Managed by the contract
     */
    mapping(address account => uint256 amount) private claims;

    /**
     * @notice Track refunded amount for each user.
     * @dev Managed by the contract
     */
    mapping(address account => uint256 amount) private refunds;

    /**
     * @notice Track if the winning amount and fees are already withdrawn
     * @dev Managed by the contract
     */
    bool public alreadyWithdrawnWinningAmountAndFees;

    /**
     * @dev Constructor
     */
    constructor(
        address initialOwner_,
        address authorizer_,
        IERC20Metadata currencyToken_,
        uint256 hardCap_,
        uint32 depositStartDate_,
        uint32 depositEndDate_,
        uint256 depositIncrement_,
        uint256[] memory tiersLimit_,
        uint16[] memory tiersFeesBasisPoint_
    ) Ownable(initialOwner_) {
        authorizer = authorizer_;
        currencyToken = currencyToken_;
        hardCap = hardCap_;
        depositStartDate = depositStartDate_;
        depositEndDate = depositEndDate_;
        depositIncrement = depositIncrement_;
        tiersLimit = tiersLimit_;
        tiersFeesBasisPoint = tiersFeesBasisPoint_;

        // check the dates
        if (depositStartDate == 0) revert InvalidDates();
        if (depositEndDate == 0) revert InvalidDates();
        if (depositStartDate >= depositEndDate) revert InvalidDates();

        // check zero values
        if (authorizer == address(0)) revert InvalidSignature();
        if (depositIncrement == 0) revert InvalidIncrement();

        // check hardCap is multiple of deposit increment
        if (hardCap % depositIncrement != 0) revert InvalidIncrement();

        // check currency token implements balanceOf function
        currencyToken.balanceOf(address(this));
    }

    /**
     * @notice Participate in the sale
     */
    function deposit(
        uint256 amount_,
        uint8 tierLevel_,
        bytes memory signature_,
        uint32 signatureExpiration_
    ) external nonReentrant {
        // check if the sale is open
        if (
            block.timestamp < depositStartDate ||
            block.timestamp > depositEndDate
        ) revert DepositClosed();

        // check if signature is expired
        if (block.timestamp > signatureExpiration_) revert InvalidSignature();

        // check signature is signed by authorizer
        if (
            !SignatureChecker.isValidSignatureNow(
                authorizer,
                MessageHashUtils.toEthSignedMessageHash(
                    keccak256(
                        abi.encodePacked(
                            block.chainid,
                            address(this),
                            'deposit',
                            msg.sender,
                            tierLevel_,
                            amount_,
                            signatureExpiration_
                        )
                    )
                ),
                signature_
            )
        ) revert InvalidSignature();

        // calculate the fees
        uint256 _fees = (amount_ * tiersFeesBasisPoint[tierLevel_]) / 10_000;

        // update the total fees
        totalFees = totalFees + _fees;

        // save balance before transfer
        uint256 _contractBalance = currencyToken.balanceOf(address(this));

        // transfer amount with fees
        currencyToken.safeTransferFrom(
            msg.sender,
            address(this),
            amount_ + _fees
        );

        // calculate actual amount transferred
        uint256 _transferredAmount = currencyToken.balanceOf(address(this)) -
            _contractBalance -
            _fees;

        // check amount is not 0
        if (_transferredAmount == 0) revert NothingToTransfer();

        // check amount is multiple of deposit increment
        if (_transferredAmount % depositIncrement != 0)
            revert InvalidIncrement();

        // update total deposited amount
        totalDepositedAmount = totalDepositedAmount + _transferredAmount;

        // check if the hard cap is reached
        if (hardCap > 0 && totalDepositedAmount > hardCap)
            revert HardCapReached();

        // calculate new balance
        uint256 _balance = deposits[msg.sender] + _transferredAmount;

        // check if the tier limit is reached
        if (_balance > tiersLimit[tierLevel_]) revert TierLimitReached();

        // update balance
        deposits[msg.sender] = _balance;

        // emit event
        emit Deposit(msg.sender, _transferredAmount, tierLevel_, _fees);
    }

    /**
     * @notice Claim the tokens and refund the currency token.
     */
    function claim(
        uint256 winningAmount_,
        uint256 loosingAmount_,
        bytes memory signature_,
        uint32 signatureExpiration_
    ) external {
        // check if the claim is open
        if (block.timestamp < claimStartDate || block.timestamp > claimEndDate)
            revert ClaimClosed();

        // check if signature is expired
        if (block.timestamp > signatureExpiration_) revert InvalidSignature();

        // check signature is signed by authorizer
        if (
            !SignatureChecker.isValidSignatureNow(
                authorizer,
                MessageHashUtils.toEthSignedMessageHash(
                    keccak256(
                        abi.encodePacked(
                            block.chainid,
                            address(this),
                            'claim',
                            msg.sender,
                            winningAmount_,
                            loosingAmount_,
                            signatureExpiration_
                        )
                    )
                ),
                signature_
            )
        ) revert InvalidSignature();

        // check winningAmount is multiple of deposit increment
        if (winningAmount_ % depositIncrement != 0) revert InvalidIncrement();

        // check loosingAmount is multiple of deposit increment
        if (loosingAmount_ % depositIncrement != 0) revert InvalidIncrement();

        // get deposited amount
        uint256 _depositedAmount = deposits[msg.sender];

        // get claimed amount
        uint256 _claimedAmount = claims[msg.sender];

        // get refunded amount
        uint256 _refundedAmount = refunds[msg.sender];

        // check if already fully refunded
        if (_refundedAmount > loosingAmount_) revert AlreadyRefunded();

        // check deposit is not 0
        if (_depositedAmount == 0) revert NothingToTransfer();

        // check sum of winning and loosing amount is not more than the user's deposit
        if (winningAmount_ + loosingAmount_ > _depositedAmount)
            revert InvalidAmounts();

        // get claimable amount
        uint256 _claimableAmount = claimableAmountOf(
            msg.sender,
            winningAmount_
        );

        // skip update if nothing to claim
        if (_claimableAmount > 0) {
            // update user claimed amount
            claims[msg.sender] = _claimedAmount + _claimableAmount;

            // update total claimed amount
            totalClaimedAmount = totalClaimedAmount + _claimableAmount;

            // check if the total claimed amount is not higher than the total winning amount
            if (totalClaimedAmount > totalWinningAmount)
                revert TotalWinningAmountReached();
        }

        // calculate the remaining amount to refund
        uint256 _refundableAmount = loosingAmount_ - _refundedAmount;

        // skip update if nothing to refund
        if (_refundableAmount > 0) {
            // update user claimed amount
            refunds[msg.sender] = _refundedAmount + _refundableAmount;

            // update total refunded loosing amount
            totalRefundedLoosingAmount =
                totalRefundedLoosingAmount +
                _refundableAmount;
        }

        // check if there is something to transfer
        if (_claimableAmount == 0 && _refundableAmount == 0)
            revert NothingToTransfer();

        // calculate the claimable amount in token
        uint256 _claimableAmountInToken = _claimableAmount > 0
            ? (_claimableAmount *
                10 ** token.decimals() *
                tokenPriceDenominator) / tokenPriceNumerator
            : 0;

        // transfer claimable token
        if (_claimableAmountInToken > 0)
            token.safeTransfer(msg.sender, _claimableAmountInToken);

        // transfer refund currency
        if (_refundableAmount > 0)
            currencyToken.safeTransfer(msg.sender, _refundableAmount);

        // emit event
        emit Claim(msg.sender, _claimableAmountInToken, _refundableAmount);
    }

    /**
     * @notice Refund all your deposit
     */
    function refund(
        uint256 winningAmount_,
        uint256 loosingAmount_,
        bytes memory signature_,
        uint32 signatureExpiration_
    ) external {
        // check if the refund is open
        if (
            block.timestamp < refundStartDate || block.timestamp > refundEndDate
        ) revert RefundClosed();

        // check if signature is expired
        if (block.timestamp > signatureExpiration_) revert InvalidSignature();

        // check signature is signed by authorizer
        if (
            !SignatureChecker.isValidSignatureNow(
                authorizer,
                MessageHashUtils.toEthSignedMessageHash(
                    keccak256(
                        abi.encodePacked(
                            block.chainid,
                            address(this),
                            'refund',
                            msg.sender,
                            winningAmount_,
                            loosingAmount_,
                            signatureExpiration_
                        )
                    )
                ),
                signature_
            )
        ) revert InvalidSignature();

        // check winningAmount is multiple of deposit increment
        if (winningAmount_ % depositIncrement != 0) revert InvalidIncrement();

        // check loosingAmount is multiple of deposit increment
        if (loosingAmount_ % depositIncrement != 0) revert InvalidIncrement();

        // check if already claimed
        if (claims[msg.sender] > 0) revert AlreadyClaimed();

        // check if already refunded
        if (refunds[msg.sender] > 0) revert AlreadyRefunded();

        // get deposited amount
        uint256 _depositedAmount = deposits[msg.sender];

        // check deposit is not 0
        if (_depositedAmount == 0) revert NothingToTransfer();

        // check winning amount and loosing amount are equal to the user's deposit
        if (winningAmount_ + loosingAmount_ != _depositedAmount)
            revert InvalidAmounts();

        // mark the user as refunded
        refunds[msg.sender] = _depositedAmount;

        // update total refunded winning amounts
        totalRefundedWinningAmount =
            totalRefundedWinningAmount +
            winningAmount_;

        // update total refunded loosing amounts
        totalRefundedLoosingAmount =
            totalRefundedLoosingAmount +
            loosingAmount_;

        // transfer currency token back to user
        currencyToken.safeTransfer(msg.sender, _depositedAmount);

        // emit event
        emit Refund(msg.sender, winningAmount_, loosingAmount_);
    }

    /**
     * @notice Get the deposited amount of a user
     */
    function depositedAmountOf(
        address account_
    ) external view returns (uint256) {
        return deposits[account_];
    }

    /**
     * @notice Get the claimed amount of a user
     */
    function claimedAmountOf(address account_) external view returns (uint256) {
        return claims[account_];
    }

    /**
     * @notice Get the refunded amount of a user
     */
    function refundedAmountOf(
        address account_
    ) external view returns (uint256) {
        return refunds[account_];
    }

    /**
     * @notice Get the limit of a tier
     */
    function getTiersLimit() external view returns (uint256[] memory) {
        return tiersLimit;
    }

    /**
     * @notice Get the fees of a tier
     */
    function getTiersFeesBasisPoint() external view returns (uint16[] memory) {
        return tiersFeesBasisPoint;
    }

    /**
     * @notice Get the claimable amount of a user. This take into account the vesting.
     */
    function claimableAmountOf(
        address account_,
        uint256 winningAmount_
    ) public view returns (uint256) {
        // check if claim period has started
        if (block.timestamp < claimStartDate) return 0;

        // return remaining amount if vesting is over
        if (block.timestamp >= claimVestingEndDate)
            return winningAmount_ - claims[account_];

        // calculate vested amount using a linear vesting schedule
        return
            (((winningAmount_ * claimVestingCliffBasisPoint) / 10_000) + // cliff
                (((winningAmount_ * (10_000 - claimVestingCliffBasisPoint)) /
                    10_000) * (block.timestamp - claimStartDate)) / // rest linearly unlocked
                (claimVestingEndDate - claimStartDate)) - claims[account_];
    }

    /**
     * @notice Set the claim and refund configuration. Only the owner can call this function
     */
    function setClaimConfig(
        IERC20Metadata token_,
        uint256 tokenPriceNumerator_,
        uint256 tokenPriceDenominator_,
        uint32 claimStartDate_,
        uint32 claimEndDate_,
        uint32 claimVestingEndDate_,
        uint16 claimVestingCliffBasisPoint_,
        uint256 totalWinningAmount_
    ) external onlyOwner {
        // check if config is already set
        if (token != IERC20Metadata(address(0))) revert ConfigAlreadySet();

        // set
        token = token_;
        tokenPriceNumerator = tokenPriceNumerator_;
        tokenPriceDenominator = tokenPriceDenominator_;
        claimStartDate = claimStartDate_;
        claimEndDate = claimEndDate_;
        claimVestingEndDate = claimVestingEndDate_;
        claimVestingCliffBasisPoint = claimVestingCliffBasisPoint_;
        totalWinningAmount = totalWinningAmount_;

        // check the dates
        if (claimStartDate == 0) revert InvalidDates();
        if (claimEndDate == 0) revert InvalidDates();
        if (claimStartDate >= claimEndDate) revert InvalidDates();
        if (depositEndDate >= claimStartDate) revert InvalidDates();
        if (claimVestingEndDate < claimStartDate) revert InvalidDates();
        if (claimVestingEndDate > claimEndDate) revert InvalidDates();

        // check amounts
        if (tokenPriceNumerator == 0) revert InvalidAmounts();
        if (tokenPriceDenominator == 0) revert InvalidAmounts();
        if (totalWinningAmount == 0) revert InvalidAmounts();

        // check basis point is between 0 and 10,000
        if (claimVestingCliffBasisPoint > 10_000) revert InvalidAmounts();

        // check token implements decimals and balanceOf function
        token.decimals();
        token.balanceOf(address(this));
    }

    /**
     * @notice Set the claim and refund configuration. Only the owner can call this function
     */
    function setRefundConfig(
        uint32 refundStartDate_,
        uint32 refundEndDate_
    ) external onlyOwner {
        // check if config is already set
        if (refundStartDate != 0) revert ConfigAlreadySet();

        // set
        refundStartDate = refundStartDate_;
        refundEndDate = refundEndDate_;

        // check the dates
        if (refundStartDate == 0) revert InvalidDates();
        if (refundEndDate == 0) revert InvalidDates();
        if (refundStartDate >= refundEndDate) revert InvalidDates();
        if (depositEndDate >= refundStartDate) revert InvalidDates();
    }

    /**
     * @notice Withdraw winning amount with fees from the contract after the deposit and refund periods are closed. Only the owner can call this function
     */
    function withdrawWinningAmountWithFees(address to_) external onlyOwner {
        // check this function was not already executed
        if (alreadyWithdrawnWinningAmountAndFees)
            revert AlreadyWithdrawnWinningAmountAndFees();

        alreadyWithdrawnWinningAmountAndFees = true;

        // check the deposit period is closed
        if (block.timestamp <= depositEndDate) revert WithdrawClosed();

        // check the refund period is closed
        if (refundEndDate > 0 && block.timestamp <= refundEndDate)
            revert WithdrawClosed();

        // cap the total winning amount in case the sale is not full
        uint256 _cappedTotalWinningAmount = totalDepositedAmount <
            totalWinningAmount
            ? totalDepositedAmount
            : totalWinningAmount;

        // calculate withdrawable winning amount
        uint256 _withdrawableWinningAmount = _cappedTotalWinningAmount +
            totalFees -
            totalRefundedWinningAmount;

        // check there is something to transfer
        if (_withdrawableWinningAmount == 0) revert NothingToTransfer();

        // transfer currency
        currencyToken.safeTransfer(to_, _withdrawableWinningAmount);
    }

    /**
     * @notice Withdraw excess token. Only the owner can call this function
     */
    function withdrawExcessToken(address to_) external onlyOwner {
        // check config is set
        if (token == IERC20Metadata(address(0))) revert ConfigNotSet();

        // cap the total winning amount in case the sale is not full
        uint256 _cappedTotalWinningAmount = totalDepositedAmount <
            totalWinningAmount
            ? totalDepositedAmount
            : totalWinningAmount;

        // get token balance
        uint256 _tokenBalance = token.balanceOf(address(this));

        // reduce token balance if both tokens are the same
        if (token == currencyToken) {
            // calculate the reserved balance
            uint256 _reservedBalance = totalDepositedAmount -
                _cappedTotalWinningAmount -
                totalRefundedLoosingAmount;

            // increase reserved balance with amount that can be withdrawn by function withdrawWinningAmountWithFees
            if (!alreadyWithdrawnWinningAmountAndFees) {
                // calculate withdrawable winning amount, same as function withdrawWinningAmountWithFees
                uint256 _withdrawableWinningAmount = _cappedTotalWinningAmount +
                    totalFees -
                    totalRefundedWinningAmount;

                // add the amount that can be withdrawn by function withdrawWinningAmountWithFees
                _reservedBalance =
                    _reservedBalance +
                    _withdrawableWinningAmount;
            }

            // remove reserved balance from token balance
            // _tokenBalance is always greater than or equal to _reservedBalance
            _tokenBalance = _tokenBalance - _reservedBalance;
        }

        // calculate the claimable amount
        uint256 _claimableAmount = _cappedTotalWinningAmount -
            totalClaimedAmount -
            totalRefundedWinningAmount;

        // convert claimable amount in token
        uint256 _claimableAmountInToken = (_claimableAmount *
            10 ** token.decimals() *
            tokenPriceDenominator) / tokenPriceNumerator;

        // check token balance is not less than the claimable amount
        if (_tokenBalance <= _claimableAmountInToken)
            revert NothingToTransfer();

        // transfer token
        token.safeTransfer(to_, _tokenBalance - _claimableAmountInToken);
    }

    /**
     * @notice Withdraw all token from the contract after the deposit, claim and refund periods are closed. Only the owner can call this function
     */
    function withdrawAll(address to_) external onlyOwner {
        // check the deposit period is closed
        if (block.timestamp <= depositEndDate) revert WithdrawClosed();

        // check the claim period is closed
        if (claimEndDate > 0 && block.timestamp <= claimEndDate)
            revert WithdrawClosed();

        // check the refund period is closed
        if (refundEndDate > 0 && block.timestamp <= refundEndDate)
            revert WithdrawClosed();

        // get currency balance
        uint256 _currencyBalance = currencyToken.balanceOf(address(this));

        // get token balance
        uint256 _tokenBalance = token != IERC20Metadata(address(0)) &&
            token != currencyToken
            ? token.balanceOf(address(this))
            : 0;

        // check there is something to transfer
        if (_currencyBalance == 0 && _tokenBalance == 0)
            revert NothingToTransfer();

        // transfer currency
        if (_currencyBalance > 0)
            currencyToken.safeTransfer(to_, _currencyBalance);

        // transfer token
        if (_tokenBalance > 0) token.safeTransfer(to_, _tokenBalance);
    }

    /**
     * @notice Set the authorizer wallet, can only be called by the owner
     */
    function setAuthorizer(address authorizer_) external onlyOwner {
        authorizer = authorizer_;
    }
}

// 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) (interfaces/IERC1271.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC1271 standard signature validation method for
 * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
 */
interface IERC1271 {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param hash      Hash of the data to be signed
     * @param signature Signature byte array associated with _data
     */
    function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}

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

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}

// 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: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.20;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS
    }

    /**
     * @dev The signature derives the `address(0)`.
     */
    error ECDSAInvalidSignature();

    /**
     * @dev The signature has an invalid length.
     */
    error ECDSAInvalidSignatureLength(uint256 length);

    /**
     * @dev The signature has an S value that is in the upper half order.
     */
    error ECDSAInvalidSignatureS(bytes32 s);

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not
     * return address(0) without also returning an error description. Errors are documented using an enum (error type)
     * and a bytes32 providing additional information about the error.
     *
     * If no error is returned, then the address can be used for verification purposes.
     *
     * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError, bytes32) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length));
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, signature);
        _throwError(error, errorArg);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError, bytes32) {
        unchecked {
            bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
            // We do not check for an overflow here since the shift operation results in 0 or 1.
            uint8 v = uint8((uint256(vs) >> 255) + 27);
            return tryRecover(hash, v, r, s);
        }
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     */
    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
        (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, r, vs);
        _throwError(error, errorArg);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError, bytes32) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS, s);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature, bytes32(0));
        }

        return (signer, RecoverError.NoError, bytes32(0));
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, v, r, s);
        _throwError(error, errorArg);
        return recovered;
    }

    /**
     * @dev Optionally reverts with the corresponding custom error according to the `error` argument provided.
     */
    function _throwError(RecoverError error, bytes32 errorArg) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert ECDSAInvalidSignature();
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert ECDSAInvalidSignatureLength(uint256(errorArg));
        } else if (error == RecoverError.InvalidSignatureS) {
            revert ECDSAInvalidSignatureS(errorArg);
        }
    }
}

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

pragma solidity ^0.8.20;

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

/**
 * @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing.
 *
 * The library provides methods for generating a hash of a message that conforms to the
 * https://eips.ethereum.org/EIPS/eip-191[EIP 191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712]
 * specifications.
 */
library MessageHashUtils {
    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing a bytes32 `messageHash` with
     * `"\x19Ethereum Signed Message:\n32"` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with
     * keccak256, although any bytes32 value can be safely used because the final digest will
     * be re-hashed.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32") // 32 is the bytes-length of messageHash
            mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix
            digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20)
        }
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing an arbitrary `message` with
     * `"\x19Ethereum Signed Message:\n" + len(message)` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) {
        return
            keccak256(bytes.concat("\x19Ethereum Signed Message:\n", bytes(Strings.toString(message.length)), message));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x00` (data with intended validator).
     *
     * The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended
     * `validator` address. Then hashing the result.
     *
     * See {ECDSA-recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(hex"19_00", validator, data));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-712 typed data (EIP-191 version `0x01`).
     *
     * The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with
     * `\x19\x01` and hashing the result. It corresponds to the hash signed by the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712.
     *
     * See {ECDSA-recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, hex"19_01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            digest := keccak256(ptr, 0x42)
        }
    }
}

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

pragma solidity ^0.8.20;

import {ECDSA} from "./ECDSA.sol";
import {IERC1271} from "../../interfaces/IERC1271.sol";

/**
 * @dev Signature verification helper that can be used instead of `ECDSA.recover` to seamlessly support both ECDSA
 * signatures from externally owned accounts (EOAs) as well as ERC1271 signatures from smart contract wallets like
 * Argent and Safe Wallet (previously Gnosis Safe).
 */
library SignatureChecker {
    /**
     * @dev Checks if a signature is valid for a given signer and data hash. If the signer is a smart contract, the
     * signature is validated against that smart contract using ERC1271, otherwise it's validated using `ECDSA.recover`.
     *
     * NOTE: Unlike ECDSA signatures, contract signatures are revocable, and the outcome of this function can thus
     * change through time. It could return true at block N and false at block N+1 (or the opposite).
     */
    function isValidSignatureNow(address signer, bytes32 hash, bytes memory signature) internal view returns (bool) {
        (address recovered, ECDSA.RecoverError error, ) = ECDSA.tryRecover(hash, signature);
        return
            (error == ECDSA.RecoverError.NoError && recovered == signer) ||
            isValidERC1271SignatureNow(signer, hash, signature);
    }

    /**
     * @dev Checks if a signature is valid for a given signer and data hash. The signature is validated
     * against the signer smart contract using ERC1271.
     *
     * NOTE: Unlike ECDSA signatures, contract signatures are revocable, and the outcome of this function can thus
     * change through time. It could return true at block N and false at block N+1 (or the opposite).
     */
    function isValidERC1271SignatureNow(
        address signer,
        bytes32 hash,
        bytes memory signature
    ) internal view returns (bool) {
        (bool success, bytes memory result) = signer.staticcall(
            abi.encodeCall(IERC1271.isValidSignature, (hash, signature))
        );
        return (success &&
            result.length >= 32 &&
            abi.decode(result, (bytes32)) == bytes32(IERC1271.isValidSignature.selector));
    }
}

// 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);
        }
    }
}

// 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: 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));
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"address","name":"initialOwner_","type":"address"},{"internalType":"address","name":"authorizer_","type":"address"},{"internalType":"contract IERC20Metadata","name":"currencyToken_","type":"address"},{"internalType":"uint256","name":"hardCap_","type":"uint256"},{"internalType":"uint32","name":"depositStartDate_","type":"uint32"},{"internalType":"uint32","name":"depositEndDate_","type":"uint32"},{"internalType":"uint256","name":"depositIncrement_","type":"uint256"},{"internalType":"uint256[]","name":"tiersLimit_","type":"uint256[]"},{"internalType":"uint16[]","name":"tiersFeesBasisPoint_","type":"uint16[]"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"AlreadyClaimed","type":"error"},{"inputs":[],"name":"AlreadyRefunded","type":"error"},{"inputs":[],"name":"AlreadyWithdrawnWinningAmountAndFees","type":"error"},{"inputs":[],"name":"ClaimClosed","type":"error"},{"inputs":[],"name":"ConfigAlreadySet","type":"error"},{"inputs":[],"name":"ConfigNotSet","type":"error"},{"inputs":[],"name":"DepositClosed","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[],"name":"HardCapReached","type":"error"},{"inputs":[],"name":"InvalidAmounts","type":"error"},{"inputs":[],"name":"InvalidDates","type":"error"},{"inputs":[],"name":"InvalidIncrement","type":"error"},{"inputs":[],"name":"InvalidSignature","type":"error"},{"inputs":[],"name":"NothingToTransfer","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[],"name":"RefundClosed","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[],"name":"TierLimitReached","type":"error"},{"inputs":[],"name":"TotalWinningAmountReached","type":"error"},{"inputs":[],"name":"WithdrawClosed","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"claimedAmountInToken","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"refundedAmountInCurrency","type":"uint256"}],"name":"Claim","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint8","name":"tierLevel","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"fees","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"winningAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"loosingAmount","type":"uint256"}],"name":"Refund","type":"event"},{"inputs":[],"name":"alreadyWithdrawnWinningAmountAndFees","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"authorizer","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"winningAmount_","type":"uint256"},{"internalType":"uint256","name":"loosingAmount_","type":"uint256"},{"internalType":"bytes","name":"signature_","type":"bytes"},{"internalType":"uint32","name":"signatureExpiration_","type":"uint32"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimEndDate","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimStartDate","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimVestingCliffBasisPoint","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimVestingEndDate","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"},{"internalType":"uint256","name":"winningAmount_","type":"uint256"}],"name":"claimableAmountOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"}],"name":"claimedAmountOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currencyToken","outputs":[{"internalType":"contract IERC20Metadata","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount_","type":"uint256"},{"internalType":"uint8","name":"tierLevel_","type":"uint8"},{"internalType":"bytes","name":"signature_","type":"bytes"},{"internalType":"uint32","name":"signatureExpiration_","type":"uint32"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"depositEndDate","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"depositIncrement","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"depositStartDate","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"}],"name":"depositedAmountOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTiersFeesBasisPoint","outputs":[{"internalType":"uint16[]","name":"","type":"uint16[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTiersLimit","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"hardCap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"winningAmount_","type":"uint256"},{"internalType":"uint256","name":"loosingAmount_","type":"uint256"},{"internalType":"bytes","name":"signature_","type":"bytes"},{"internalType":"uint32","name":"signatureExpiration_","type":"uint32"}],"name":"refund","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"refundEndDate","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"refundStartDate","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account_","type":"address"}],"name":"refundedAmountOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"authorizer_","type":"address"}],"name":"setAuthorizer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20Metadata","name":"token_","type":"address"},{"internalType":"uint256","name":"tokenPriceNumerator_","type":"uint256"},{"internalType":"uint256","name":"tokenPriceDenominator_","type":"uint256"},{"internalType":"uint32","name":"claimStartDate_","type":"uint32"},{"internalType":"uint32","name":"claimEndDate_","type":"uint32"},{"internalType":"uint32","name":"claimVestingEndDate_","type":"uint32"},{"internalType":"uint16","name":"claimVestingCliffBasisPoint_","type":"uint16"},{"internalType":"uint256","name":"totalWinningAmount_","type":"uint256"}],"name":"setClaimConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"refundStartDate_","type":"uint32"},{"internalType":"uint32","name":"refundEndDate_","type":"uint32"}],"name":"setRefundConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract IERC20Metadata","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenPriceDenominator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenPriceNumerator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalClaimedAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalDepositedAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalFees","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalRefundedLoosingAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalRefundedWinningAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalWinningAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to_","type":"address"}],"name":"withdrawAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to_","type":"address"}],"name":"withdrawExcessToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to_","type":"address"}],"name":"withdrawWinningAmountWithFees","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Swarm Source

ipfs://62539ec853e07dded8a46c82c40c3e9d12bf7ac9a723382ad5f6ccec773ff387

Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.