// 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 v5.0.1) (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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// 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/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) (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
pragma solidity ^0.8.24;

/*
  * Merkle Proof library as seen on:
  * https://github.com/gnosis/safe-token-distribution/blob/master/tooling/contracts/MerkleProof.sol
  */
library MerkleProof {
  function verify(
    bytes32[] calldata proof,
    bytes32 root,
    bytes32 leaf
  ) internal pure returns (bool) {
    bytes32 computed = leaf;
    for (uint256 i = 0; i < proof.length; i++) {
      computed = hashPair(computed, proof[i]);
    }
    return computed == root;
  }

  function hashPair(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
    (a, b) = (a < b) ? (a, b) : (b, a);

    /// @solidity memory-safe-assembly
    assembly {
      mstore(0x00, a)
      mstore(0x20, b)
      value := keccak256(0x00, 0x40)
    }
  }
}

// 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
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/access/Ownable.sol";
import "./PassportRegistry.sol";

contract PassportBuilderScore is Ownable {
    PassportRegistry public passportRegistry;

    // Mapping to store scores for each passport ID
    mapping(uint256 => uint256) private passportScores;

    // Mapping to store timestamps of last updates for each passport ID
    mapping(uint256 => uint256) private passportLastUpdate;

    // Mapping to store trusted signers
    mapping(address => bool) public trustedSigners;

    event ScoreUpdated(uint256 indexed passportId, uint256 score, uint256 timestamp);
    event PassportRegistryChanged(address indexed oldAddress, address indexed newAddress);

    uint256 public EXPIRATION_TIME = 1 days * 90; // 90 days

    constructor(address passportRegistryAddress, address initialOwner) Ownable(initialOwner) {
        passportRegistry = PassportRegistry(passportRegistryAddress);
        trustedSigners[initialOwner] = true;
    }

    /**
     * @notice Sets the expiration time for the scores.
     * @dev Can only be called by the owner.
     * @param newExpirationTime The new expiration time in days.
     */
    function setExpirationTime(uint256 newExpirationTime) external onlyOwner {
        EXPIRATION_TIME = 1 days * newExpirationTime;
    }

    /**
     * @notice Adds the given address to the list of trusted signers.
     * @dev Can only be called by the owner.
     * @param signer The address to add to the list of trusted signers.
     */
    function addTrustedSigner(address signer) external onlyOwner {
        trustedSigners[signer] = true;
    }

    /**
     * @notice Removes the given address from the list of trusted signers.
     * @dev Can only be called by the owner.
     * @param signer The address to remove from the list of trusted signers.
     */
    function removeTrustedSigner(address signer) external onlyOwner {
        trustedSigners[signer] = false;
    }

    /**
     * @notice Sets the score for a given passport ID.
     * @dev Can only be called by the owner.
     * @param passportId The ID of the passport to set the score for.
     * @param score The score to set for the passport ID.
     */
    function setScore(uint256 passportId, uint256 score) external returns (bool) {
        require(trustedSigners[msg.sender], "Caller is not a trusted signer");
        require(passportRegistry.idPassport(passportId) != address(0), "Passport ID does not exist");
        passportScores[passportId] = score;
        passportLastUpdate[passportId] = block.timestamp;
        emit ScoreUpdated(passportId, score, block.timestamp);
        return true;
    }

    /**
     * @notice Gets the score of a given passport ID.
     * @param passportId The ID of the passport to get the score for.
     * @return The score of the given passport ID.
     */
    function getScore(uint256 passportId) public view returns (uint256) {
        uint256 lastUpdate = passportLastUpdate[passportId] == 0 ? block.timestamp : passportLastUpdate[passportId];
        require(lastUpdate + EXPIRATION_TIME >= block.timestamp, "Score is expired");
        return passportScores[passportId];
    }

    /**
     * @notice Gets the timestamp of the last update for a given passport ID.
     * @param passportId The ID of the passport to get the last update timestamp for.
     * @return The timestamp of the last update for the given passport ID.
     */
    function getLastUpdate(uint256 passportId) external view returns (uint256) {
        return passportLastUpdate[passportId];
    }

    function getLastUpdateByAddress(address wallet) external view returns (uint256) {
        return passportLastUpdate[passportRegistry.passportId(wallet)];
    }

    /**
     * @notice Gets the score of a given address.
     * @param wallet The address to get the score for.
     * @return The score of the given address.
     */
    function getScoreByAddress(address wallet) external view returns (uint256) {
        uint256 passportId = passportRegistry.passportId(wallet);
        require(passportRegistry.idPassport(passportId) != address(0), "Passport ID does not exist");

        uint256 score = getScore(passportId);
        return score;
    }

    /**
     * @notice Changes the address of the PassportRegistry contract.
     * @dev Can only be called by the owner.
     * @param newPassportRegistryAddress The address of the new PassportRegistry contract.
     */
    function setPassportRegistry(address newPassportRegistryAddress) external onlyOwner {
        require(newPassportRegistryAddress != address(0), "Invalid address");
        address oldAddress = address(passportRegistry);
        passportRegistry = PassportRegistry(newPassportRegistryAddress);
        emit PassportRegistryChanged(oldAddress, newPassportRegistryAddress);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/utils/math/Math.sol";
import "@openzeppelin/contracts/utils/Pausable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract PassportRegistry is Ownable, Pausable {
    // wallet => passport id
    mapping(address => uint256) public passportId;

    // passport id => wallet
    mapping(uint256 => address) public idPassport;

    // wallet => bool
    mapping(address => bool) public walletActive;

    // id => bool
    mapping(uint256 => bool) public idActive;

    // id => source
    mapping(uint256 => string) public idSource;

    // source => # passports
    mapping(string => uint256) public sourcePassports;

    // Total number of passports created
    uint256 public totalCreates;

    // Total number of passports sequencially created
    uint256 public totalSequencialCreates;

    // Total number of passports created by admins
    uint256 public totalAdminsCreates;

    // Total number of passport transfers
    uint256 public totalPassportTransfers;

    // The next id to be issued
    uint256 private _nextSequentialPassportId;

    // Smart contract id in sequencial mode
    bool private _sequencial;

    // A new passport has been created
    event Create(address indexed wallet, uint256 passportId, string source);

    // A passport has been tranfered
    event Transfer(uint256 oldPassportId, uint256 newPassportId, address indexed oldWallet, address indexed newWallet);

    // A passport has been deactivated
    event Deactivate(address indexed wallet, uint256 passportId);

    // A passport has been activated
    event Activate(address indexed wallet, uint256 passportId);

    // Passport generation mode changed
    event PassportGenerationChanged(bool sequencial, uint256 nextSequencialPassportId);

    // Transfer request initiated
    event TransferRequested(address indexed fromWallet, address indexed toWallet, uint256 passportId);

    // Transfer request accepted
    event TransferAccepted(address indexed fromWallet, address indexed toWallet, uint256 passportId);

    // Transfer request revoked
    event TransferRevoked(address indexed wallet, uint256 passportId);

    mapping(uint256 => address) public transferRequests;

    /**
     * @dev Modifier to make a function callable only when the contract is in sequencial mode.
     *
     * Requirements:
     *
     * - The contract must be in sequencial mode.
     */
    modifier whenSequencialGeneration() {
        require(sequencial(), "Admin generation mode");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is in admin generation mode.
     *
     * Requirements:
     *
     * - The contract must be in admin generation mode.
     */
    modifier whenAdminGeneration() {
        require(!sequencial(), "Sequencial generation mode");
        _;
    }

    constructor(address initialOwner) Ownable(initialOwner) {
        _sequencial = false;
    }

    /**
     * @notice Creates a new passport with the next sequential ID.
     * @dev Can only be called when the contract is in sequential generation mode and not paused.
     * @param source The source of the passport creation.
     */
    function create(string memory source) public whenNotPaused whenSequencialGeneration {
        require(passportId[msg.sender] == 0, "Passport already exists");

        totalSequencialCreates++;

        _create(msg.sender, _nextSequentialPassportId, source);
        _nextSequentialPassportId += 1;
    }

    /**
     * @notice Creates a new passport with a specified ID for a specific wallet.
     * @dev Can only be called by the owner when the contract is in admin generation mode and not paused.
     * @param source The source of the passport creation.
     * @param wallet The address of the wallet to associate with the new passport.
     * @param id The ID to assign to the new passport.
     */
    function adminCreate(
        string memory source,
        address wallet,
        uint256 id
    ) public onlyOwner whenNotPaused whenAdminGeneration {
        require(passportId[wallet] == 0, "Passport already exists");

        totalAdminsCreates++;

        _create(wallet, id, source);
    }

    /**
     * @notice Transfers the passport ID of the msg.sender to the new wallet.
     * @dev Can only be called by the passport owner and when the contract is not paused.
     * @param newWallet The address of the new wallet to transfer the passport to.
     */
    function transfer(address newWallet) public whenNotPaused {
        uint256 id = passportId[msg.sender];
        require(newWallet != msg.sender, "You can not transfer to yourself");
        require(newWallet != address(0), "You can not transfer to zero address");
        require(id != 0, "Passport does not exist");
        require(passportId[newWallet] == 0, "Wallet passed already has a passport");
        require(transferRequests[id] == address(0), "Pending transfer already exists for this passport ID");

        transferRequests[id] = newWallet;

        emit TransferRequested(msg.sender, newWallet, id);
    }

    /**
     * @notice Accepts a pending passport transfer to the msg.sender's wallet.
     * @dev Can be called by the new wallet to accept the transfer.
     */
    function acceptTransfer(uint256 _passportId) public whenNotPaused {
        address newWallet = transferRequests[_passportId];
        require(newWallet == msg.sender, "You are not authorized to accept this transfer");

        address oldWallet = idPassport[_passportId];
        require(oldWallet != address(0), "Passport does not exist");

        passportId[oldWallet] = 0;
        passportId[newWallet] = _passportId;
        idPassport[_passportId] = newWallet;
        walletActive[oldWallet] = false;
        walletActive[newWallet] = true;
        totalPassportTransfers++;

        delete transferRequests[_passportId];

        emit TransferAccepted(oldWallet, newWallet, _passportId);
        emit Transfer(_passportId, _passportId, oldWallet, newWallet);
    }

    /**
     * @notice Revokes a pending passport transfer.
     * @dev Can only be called by the passport owner and when the contract is not paused.
     * @param _passportId The ID of the passport for which to revoke the transfer.
     */
    function revokeTransfer(uint256 _passportId) public whenNotPaused {
        address owner = idPassport[_passportId];
        require(owner == msg.sender, "You are not the owner of this passport");
        require(transferRequests[_passportId] != address(0), "No pending transfer to revoke");

        delete transferRequests[_passportId];

        emit TransferRevoked(msg.sender, _passportId);
    }

    // Admin

    /**
     * @notice Transfers the passport ID from one wallet to another.
     * @dev Can only be called by the owner (aka admin).
     * @param wallet The address of the wallet to transfer the passport from.
     * @param id The new passport ID to assign to the wallet.
     */
    function adminTransfer(address wallet, uint256 id) public onlyOwner {
        uint256 oldId = passportId[wallet];
        address idOwner = idPassport[id];
        require(oldId != 0, "Wallet does not have a passport to transfer from");
        require(idOwner == address(0), "New passport id already has a owner");

        string memory source = idSource[oldId];
        idSource[id] = source;
        idSource[oldId] = "";
        passportId[wallet] = id;
        idPassport[oldId] = address(0);
        walletActive[wallet] = true;
        idActive[id] = true;
        idActive[oldId] = false;

        totalPassportTransfers++;

        emit Transfer(oldId, id, wallet, wallet);
    }

    /**
     * @notice Activates the passport with the given passport ID.
     * @dev Can only be called by the owner when the contract is not paused.
     * @param _passportId The ID of the passport to activate.
     */
    function activate(uint256 _passportId) public whenNotPaused onlyOwner {
        address wallet = idPassport[_passportId];
        require(wallet != address(0), "Passport must exist");
        require(walletActive[wallet] == false, "Passport must be inactive");

        walletActive[wallet] = true;
        idActive[_passportId] = true;

        // emit event
        emit Activate(wallet, _passportId);
    }

    /**
     * @notice Deactivates the passport with the given passport ID.
     * @dev Can only be called by the owner when the contract is not paused.
     * @param _passportId The ID of the passport to deactivate.
     */
    function deactivate(uint256 _passportId) public whenNotPaused onlyOwner {
        address wallet = idPassport[_passportId];
        require(wallet != address(0), "Passport must exist");
        require(walletActive[wallet] == true, "Passport must be active");

        walletActive[wallet] = false;
        idActive[_passportId] = false;

        // emit event
        emit Deactivate(wallet, _passportId);
    }

    /**
     * @notice Pauses the contract, disabling future creations.
     * @dev Can only be called by the owner.
     */
    function pause() public whenNotPaused onlyOwner {
        _pause();
    }

    /**
     * @notice Enables the contract, enabling new creations.
     * @dev Can only be called by the owner.
     */
    function unpause() public whenPaused onlyOwner {
        _unpause();
    }

    /**
     * @notice Changes the contract generation mode.
     * @dev Can only be called by the owner.
     * @param sequentialFlag Set to true for sequential generation mode, false for admin generation mode.
     * @param nextSequentialPassportId The next sequential passport ID to be issued.
     */
    function setGenerationMode(bool sequentialFlag, uint256 nextSequentialPassportId) public onlyOwner {
        _sequencial = sequentialFlag;
        _nextSequentialPassportId = nextSequentialPassportId;

        emit PassportGenerationChanged(sequentialFlag, nextSequentialPassportId);
    }

    /**
     * @dev Returns true if the contract is in sequencial mode, and false otherwise.
     */
    function sequencial() public view virtual returns (bool) {
        return _sequencial;
    }

    /**
     * @dev Returns the next id to be generated.
     */
    function nextId() public view virtual returns (uint256) {
        return _nextSequentialPassportId;
    }

    // private

    /**
     * @dev Creates a new passport with the given ID for the specified wallet.
     * @param wallet The address of the wallet to associate with the new passport.
     * @param id The ID to assign to the new passport.
     * @param source The source of the passport creation.
     */
    function _create(address wallet, uint256 id, string memory source) private {
        require(idPassport[id] == address(0), "Passport id already issued");

        totalCreates++;

        idPassport[id] = wallet;
        passportId[wallet] = id;
        walletActive[wallet] = true;
        idActive[id] = true;
        idSource[id] = source;
        
        uint256 result = sourcePassports[source] + 1;
        sourcePassports[source] = result;

        emit Create(wallet, id, source);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/utils/math/Math.sol";
import "@openzeppelin/contracts/utils/Pausable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./PassportRegistry.sol";

contract PassportWalletRegistry is Ownable, Pausable {
    // wallet => passport id
    mapping(address => uint256) private _addressPassportId;

    PassportRegistry public passportRegistry;

    // A new wallet passportId relation is created
    event WalletAdded(address indexed wallet, uint256 passportId);

    // A wallet passportId relation is removed
    event WalletRemoved(address indexed wallet, uint256 passportId);

    // Emitted when the passport registry address is changed
    event PassportRegistryChanged(address indexed oldAddress, address indexed newAddress);

    constructor(address initialOwner, address passportRegistryAddress) Ownable(initialOwner) {
        passportRegistry = PassportRegistry(passportRegistryAddress);
    }

    /**
     * @notice Sets the passport registry address.
     * @param passportRegistryAddress The address of the passport registry.
     */
    function setPassportRegistry(address passportRegistryAddress) public onlyOwner {
        require(passportRegistryAddress != address(0), "Invalid address");
        emit PassportRegistryChanged(address(passportRegistry), passportRegistryAddress);

        passportRegistry = PassportRegistry(passportRegistryAddress);
    }

    /**
     * @notice Gets the passportID associated with a wallet.
     * @param wallet The wallet to get the passportID for.
     * @return The passportId of the given wallet.
     */
    function passportId(address wallet) public view returns (uint256) {
        uint256 _passportId = _addressPassportId[wallet];

        return _passportId != 0 ? _addressPassportId[wallet] : passportRegistry.passportId(wallet);
    }

    /**
     * @notice Creates a new passport with the next sequential ID.
     * @dev Can only be called when the contract is not paused and by the owner.
     * @param wallet The wallet address to associate.
     * @param _passportId The passportId to associate.
     */
    function addWallet(address wallet, uint256 _passportId) public whenNotPaused {
        require(_addressPassportId[wallet] == 0, "Passport already exists");
        require(passportRegistry.idPassport(_passportId) != address(0), "Passport ID does not exist");
        require(passportRegistry.passportId(msg.sender) == _passportId, "Only the passport owner can add new wallets");

        _addressPassportId[wallet] = _passportId;
        emit WalletAdded(wallet, _passportId);
    }

    /**
     * @notice Creates a new passport with the next sequential ID.
     * @dev Can only be called when the contract is not paused and by the owner.
     * @param wallet The wallet address to associate.
     * @param _passportId The passportId to associate.
     */
    function adminAddWallet(address wallet, uint256 _passportId) public whenNotPaused onlyOwner {
        require(_addressPassportId[wallet] == 0, "Passport already exists");
        require(passportRegistry.idPassport(_passportId) != address(0), "Passport ID does not exist");

        _addressPassportId[wallet] = _passportId;
        emit WalletAdded(wallet, _passportId);
    }

    /**
     * @notice Removes a wallet.
     * @dev Can only be called when the contract is not paused.
     */
    function removeWallet() public whenNotPaused {
        uint256 _passportId = _addressPassportId[msg.sender];
        require(_passportId != 0, "Passport does not exist");
        require(passportRegistry.idPassport(_passportId) != address(0), "Passport ID is not registered");

        _addressPassportId[msg.sender] = 0;
        emit WalletRemoved(msg.sender, _passportId);
    }

    /**
     * @notice Removes a wallet.
     * @dev Can only be called when the contract is not paused.
     */
    function adminRemoveWallet(address wallet) public whenNotPaused onlyOwner {
        uint256 _passportId = _addressPassportId[wallet];
        require(_passportId != 0, "Passport does not exist");
        require(passportRegistry.idPassport(_passportId) != address(0), "Passport ID is not registered");

        _addressPassportId[wallet] = 0;
        emit WalletRemoved(wallet, _passportId);
    }
}

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

pragma solidity ^0.8.20;

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

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    bool private _paused;

    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    /**
     * @dev The operation failed because the contract is paused.
     */
    error EnforcedPause();

    /**
     * @dev The operation failed because the contract is not paused.
     */
    error ExpectedPause();

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        if (paused()) {
            revert EnforcedPause();
        }
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        if (!paused()) {
            revert ExpectedPause();
        }
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// 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
// Based on: https://github.com/gnosis/safe-token-distribution/blob/master/tooling/contracts/MerkleDistribution.sol
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import "../merkle/MerkleProof.sol";
import "../passport/PassportBuilderScore.sol";
import "../passport/PassportWalletRegistry.sol";

contract TalentTGEUnlock is Ownable {
    using SafeERC20 for IERC20;

    event Claimed(address indexed claimer, uint256 amount, uint256 burned);

    address public immutable token;
    bytes32 public merkleRoot;
    PassportBuilderScore public passportBuilderScore;
    PassportWalletRegistry public passportWalletRegistry;
    uint256 public minimumClaimBuilderScore;
    bool public isContractEnabled;
    mapping(address => uint256) public claimed;

    constructor(
        address _token,
        bytes32 _merkleRoot,
        PassportBuilderScore _passportBuilderScore,
        PassportWalletRegistry _passportWalletRegistry,
        uint256 _minimumClaimBuilderScore,
        address owner
    ) Ownable(owner) {
        token = _token;
        merkleRoot = _merkleRoot;
        passportBuilderScore = _passportBuilderScore;
        passportWalletRegistry = _passportWalletRegistry;
        minimumClaimBuilderScore = _minimumClaimBuilderScore;
        isContractEnabled = false;
    }

    function disableContract() external onlyOwner {
        isContractEnabled = false;
    }

    function enableContract() external onlyOwner {
        isContractEnabled = true;
    }

    function setMinimumBuilderScore(uint256 _minimumClaimBuilderScore) external onlyOwner {
        minimumClaimBuilderScore = _minimumClaimBuilderScore;
    }

    function claim(
        bytes32[] calldata merkleProofClaim,
        uint256 amountAllocated
    ) external {
        require(isContractEnabled, "Contracts are disabled");
        require(claimed[msg.sender] == 0, "Already claimed");

        address beneficiary = msg.sender;
        uint256 passportId = passportWalletRegistry.passportId(beneficiary);
        uint256 builderScore = passportBuilderScore.getScore(passportId);

        require(builderScore >= minimumClaimBuilderScore, "Onchain Builder Score is too low");

        verifyAmount(merkleProofClaim, amountAllocated);

        claimed[beneficiary] += amountAllocated;
        IERC20(token).safeTransfer(beneficiary, amountAllocated);

        emit Claimed(beneficiary, amountAllocated, 0);
    }

    function verifyAmount(
        bytes32[] calldata proof,
        uint256 amountAllocated
    ) internal view {
        bytes32 root = merkleRoot;
        bytes32 leaf = keccak256(
            bytes.concat(keccak256(abi.encode(msg.sender, amountAllocated)))
        );

        require(
            MerkleProof.verify(proof, root, leaf),
            "Invalid Allocation Proof"
        );
    }

    function setMerkleRoot(bytes32 nextMerkleRoot) external onlyOwner {
        merkleRoot = nextMerkleRoot;
    }

    function withdraw() external onlyOwner {
        IERC20(token).transfer(owner(), IERC20(token).balanceOf(address(this)));
    }
}

{
  "compilationTarget": {
    "contracts/talent/TalentTGEUnlock.sol": "TalentTGEUnlock"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "remappings": []
}