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// SPDX-License-Identifier: MIT
// @author: Buildtree - Powered by NFT Studios

pragma solidity ^0.8.18;

import {IERC721Mintable} from "./../interfaces/IERC721Mintable.sol";
import {Payable} from "./../libraries/Payable.sol";
import {SupplyControl} from "./../libraries/SupplyControl.sol";
import {LimitPerWallet} from "./../libraries/LimitPerWallet.sol";
import {SignatureProtected} from "./../libraries/SignatureProtected.sol";
import {DTOs} from "./../libraries/dtos.sol";
import {RandomGenerator} from "./../libraries/RandomGenerator.sol";

contract RandomMint721 is
    Payable,
    SupplyControl,
    LimitPerWallet,
    SignatureProtected,
    RandomGenerator
{
    mapping(uint256 => uint256) private tokenMatrix;
    string public constant contractType = "RANDOM-MINTER-721";
    string public constant version = "1.1.0";

    IERC721Mintable public erc721Contract;

    bool private _isInitialized;

    function init(
        address owner,
        uint256 maxSupply,
        address signerAddress,
        address feeRecipient,
        DTOs.Recipient[] memory recipients,
        address erc721Address
    ) external {
        require(_isInitialized == false, "Contract already initialized.");
        _transferOwnership(owner);
        initSupplyControl(maxSupply);
        initSignatureProtected(signerAddress);
        initPayable(feeRecipient, recipients);

        erc721Contract = IERC721Mintable(erc721Address);
        _isInitialized = true;
    }

    function mint(
        uint256 _amount,
        uint256 _maxPerWallet,
        uint256 _pricePerToken,
        address _coinAddress,
        uint256 _feePerToken,
        bytes calldata _signature
    ) external payable {
        validateSignature(
            abi.encodePacked(
                _maxPerWallet,
                _pricePerToken,
                _coinAddress,
                _feePerToken
            ),
            _signature
        );

        uint256 totalMinted = erc721Contract.totalMinted();
        _amount = _getAvailableTokens(_amount, totalMinted);
        _amount = getAvailableForWallet(_amount, _maxPerWallet);

        checkPayment(_amount, _pricePerToken, _coinAddress, _feePerToken);

        uint256[] memory ids = new uint256[](_amount);
        for (uint256 i; i < ids.length; i++) {
            ids[i] = getTokenToBeMinted(totalMinted + i, maxSupply);
        }

        erc721Contract.mint(msg.sender, ids);
    }

    function getAvailableTokens() public view returns (uint256) {
        (bool success, bytes memory totalSupply) = address(erc721Contract)
            .staticcall(abi.encodeWithSignature("totalMinted()"));

        require(success, "Call to totalSupply failed");

        return maxSupply - abi.decode(totalSupply, (uint256));
    }

    /**
     * @dev Returns a random available token to be minted
     */
    function getTokenToBeMinted(
        uint256 _totalSupply,
        uint256 _maxSupply
    ) internal returns (uint256) {
        uint256 maxIndex = _maxSupply - _totalSupply;
        uint256 random = getRandomNumber(maxIndex, _totalSupply);

        uint256 tokenId = tokenMatrix[random];
        if (tokenMatrix[random] == 0) {
            tokenId = random;
        }

        // Shift tokenId up by 1 to make it range from 1 to N
        // insted of 0 to N
        tokenId += 1;

        tokenMatrix[maxIndex - 1] == 0
            ? tokenMatrix[random] = maxIndex - 1
            : tokenMatrix[random] = tokenMatrix[maxIndex - 1];

        return tokenId;
    }
}

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

pragma solidity ^0.8.20;

import {IAccessControl} from "./IAccessControl.sol";
import {Context} from "../utils/Context.sol";
import {ERC165} from "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address account => bool) hasRole;
        bytes32 adminRole;
    }

    mapping(bytes32 role => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with an {AccessControlUnauthorizedAccount} error including the required role.
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual returns (bool) {
        return _roles[role].hasRole[account];
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
     * is missing `role`.
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert AccessControlUnauthorizedAccount(account, role);
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address callerConfirmation) public virtual {
        if (callerConfirmation != _msgSender()) {
            revert AccessControlBadConfirmation();
        }

        _revokeRole(role, callerConfirmation);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
        if (!hasRole(role, account)) {
            _roles[role].hasRole[account] = true;
            emit RoleGranted(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
        if (hasRole(role, account)) {
            _roles[role].hasRole[account] = false;
            emit RoleRevoked(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }
}

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

pragma solidity ^0.8.20;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev The `account` is missing a role.
     */
    error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);

    /**
     * @dev The caller of a function is not the expected one.
     *
     * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
     */
    error AccessControlBadConfirmation();

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     */
    function renounceRole(bytes32 role, address callerConfirmation) external;
}

// 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) (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 v5.0.1) (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) (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/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// @author: Buildtree - Powered by NFT Studios

pragma solidity ^0.8.18;

interface IERC721Mintable {
    function mint(address _to, uint256[] memory _ids) external;

    function totalMinted() external returns (uint256);

    function exists(uint256 _tokenId) external view returns (bool);
}

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

library DTOs {
    struct Recipient {
        address addr;
        uint256 percentage;
    }

    struct Create721ContractDto {
        address owner;
        string uuid;
        string name;
        string symbol;
        bool transferLocked;
        uint96 royaltyPercentage;
        uint256 maxSupply;
        address[] transferBlockedAddresses;
        address signer;
        Recipient[] recipients;
        uint256 paymentAmount;
        string minterKind;
        uint256[] extras;
        bytes signature;
    }

    struct Create1155ContractDto {
        address owner;
        string uuid;
        string name;
        string symbol;
        bool transferLocked;
        uint96 royaltyPercentage;
        uint256[] availableTokens;
        address[] transferBlockedAddresses;
        address signer;
        Recipient[] recipients;
        uint256 paymentAmount;
        string minterKind;
        uint256[] extras;
        bytes signature;
    }
}

// SPDX-License-Identifier: MIT
// @author: Buildtree - Powered by NFT Studios

pragma solidity ^0.8.18;

abstract contract LimitPerWallet {
    mapping(address => uint256) public mintsPerWallet;

    /**
     * @dev Checks if the given wallet address can mint more tokens.
     * If the desired amount to be minted exceeds the amount of tokens left allowed to be minted by the given address
     * it will return the maximum amount of tokens that address can mint.
     *
     * If the given address can not mint more tokens it will revert the transaction.
     */
    function getAvailableForWallet(
        uint256 _amount,
        uint256 _maxPerWallet
    ) internal returns (uint256) {
        // If maxPerWallet is 0 it means that there is no limit per wallet.
        if (_maxPerWallet == 0) {
            return _amount;
        }

        if (mintsPerWallet[msg.sender] + _amount > _maxPerWallet) {
            _amount = _maxPerWallet - mintsPerWallet[msg.sender];
        }

        require(
            _amount > 0,
            "LimitPerWallet: The caller address can not mint more tokens"
        );

        mintsPerWallet[msg.sender] += _amount;

        return _amount;
    }
}

// SPDX-License-Identifier: MIT
// @author: Buildtree - Powered by NFT Studios

pragma solidity ^0.8.18;

import {DTOs} from "./../libraries/dtos.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

abstract contract Payable {
    address public feeRecipient;
    mapping(address => uint256) private _totalEarnings;

    modifier onlyRecipient() {
        bool isRecipient = false;
        for (uint256 i = 0; i < recipients.length; i++) {
            if (recipients[i].addr == msg.sender) {
                isRecipient = true;
                break;
            }
        }

        require(
            isRecipient,
            "Payable: The caller is not an allowed withdrawer"
        );

        _;
    }

    uint256 constant BASIS_POINTS = 10000;

    DTOs.Recipient[] public recipients;

    function initPayable(
        address _feeRecipient,
        DTOs.Recipient[] memory _recipients
    ) internal {
        feeRecipient = _feeRecipient;

        for (uint256 i = 0; i < _recipients.length; i++) {
            recipients.push(_recipients[i]);
        }
    }

    function checkPayment(
        uint256 _amount,
        uint256 _pricePerToken,
        address _coinAddress,
        uint256 _feePerToken
    ) internal {
        uint totalPrice = _amount * _pricePerToken;
        uint totalFee = _amount * _feePerToken;

        if (_coinAddress == address(0)) {
            handleNativePayment(totalPrice, totalFee);
        } else {
            handleERC20Payment(_coinAddress, totalPrice, totalFee);
        }
    }

    function withdraw(address _coinAddress) external onlyRecipient {
        if (_coinAddress == address(0)) {
            handleNativeWithdraw();
        } else {
            handleERC20Withdraw(_coinAddress);
        }
    }

    function totalEarnings(address _coin) external view returns (uint256) {
        uint256 totalBalance = address(this).balance;
        if (_coin != address(0)) {
            IERC20 coin = IERC20(_coin);
            totalBalance = coin.balanceOf(address(this));
        }

        return _totalEarnings[_coin] + totalBalance;
    }

    function mulScale(
        uint256 x,
        uint256 y,
        uint256 scale
    ) internal pure returns (uint256) {
        uint256 a = x / scale;
        uint256 b = x % scale;
        uint256 c = y / scale;
        uint256 d = y % scale;

        return a * c * scale + a * d + b * c + (b * d) / scale;
    }

    function handleNativePayment(
        uint256 totalPrice,
        uint256 totalFee
    ) internal {
        uint total = totalPrice + totalFee;

        require(
            msg.value >= total,
            "Payable: Not enough Ether provided to mint"
        );

        if (msg.value > total) {
            payable(msg.sender).transfer(msg.value - total);
        }

        if (totalFee > 0) {
            (bool success, ) = address(feeRecipient).call{value: totalFee}("");
            require(success, "Payable: Transfer failed");
        }
    }

    function handleERC20Payment(
        address coinAddress,
        uint256 totalPrice,
        uint256 totalFee
    ) internal {
        IERC20 coin = IERC20(coinAddress);
        coin.transferFrom(msg.sender, address(this), totalPrice);

        if (msg.value > totalFee) {
            payable(msg.sender).transfer(msg.value - totalFee);
        }

        if (totalFee > 0) {
            (bool success, ) = address(feeRecipient).call{value: totalFee}("");
            require(success, "Payable: Transfer failed");
        }
    }

    function handleNativeWithdraw() internal {
        uint256 totalBalance = address(this).balance;
        _totalEarnings[address(0)] += totalBalance;

        for (uint256 i; i < recipients.length; i++) {
            (bool success, ) = address(recipients[i].addr).call{
                value: mulScale(
                    totalBalance,
                    recipients[i].percentage,
                    BASIS_POINTS
                )
            }("");

            require(success, "Payable: Transfer failed");
        }
    }

    function handleERC20Withdraw(address coinAddress) internal {
        IERC20 coin = IERC20(coinAddress);
        uint256 totalBalance = coin.balanceOf(address(this));
        _totalEarnings[coinAddress] += totalBalance;

        for (uint256 i; i < recipients.length; i++) {
            bool success = coin.transfer(
                recipients[i].addr,
                mulScale(totalBalance, recipients[i].percentage, BASIS_POINTS)
            );

            require(success, "Payable: Transfer failed");
        }
    }
}

// SPDX-License-Identifier: MIT
// @author: Buildtree - Powered by NFT Studios

pragma solidity ^0.8.18;

abstract contract RandomGenerator {
    /**
     * @dev Generates a pseudo-random number.
     */
    function getRandomNumber(
        uint256 _upper,
        uint256 _variable // This value should change in between calls to this function within the same block to avoid generating the same number.
    ) internal view returns (uint256) {
        uint256 random = uint256(
            keccak256(
                abi.encodePacked(
                    _variable,
                    blockhash(block.number - 1),
                    block.coinbase,
                    block.prevrandao,
                    msg.sender
                )
            )
        );

        return (random % _upper);
    }
}

// SPDX-License-Identifier: MIT
// @author: Buildtree - Powered by NFT Studios

pragma solidity ^0.8.18;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol";

abstract contract SignatureProtected is Ownable {
    address public signerAddress;

    constructor() Ownable(msg.sender) {}

    function initSignatureProtected(address _signerAddress) internal {
        signerAddress = _signerAddress;
    }

    function setSignerAddress(address _signerAddress) external onlyOwner {
        signerAddress = _signerAddress;
    }

    function validateSignature(
        bytes memory packedParams,
        bytes calldata signature
    ) internal view {
        require(
            ECDSA.recover(generateHash(packedParams), signature) ==
                signerAddress,
            "SignatureProtected: Invalid signature for the caller"
        );
    }

    function generateHash(
        bytes memory packedParams
    ) private view returns (bytes32) {
        bytes32 _hash = keccak256(
            bytes.concat(
                abi.encodePacked(address(this), msg.sender),
                packedParams
            )
        );

        bytes memory result = abi.encodePacked(
            "\x19Ethereum Signed Message:\n32",
            _hash
        );

        return keccak256(result);
    }
}

// SPDX-License-Identifier: MIT
// @author: Buildtree - Powered by NFT Studios

pragma solidity ^0.8.18;

abstract contract SupplyControl {
    uint256 public maxSupply;

    function initSupplyControl(uint256 _maxSupply) internal {
        maxSupply = _maxSupply;
    }

    /**
     * @dev Checks if there are tokens left to be minted.
     * If there are not enough tokens for the given amount to mint, it will return whatever is left.
     *
     * If there are no tokens left to be minted it will revert the transaction.
     */
    function _getAvailableTokens(
        uint256 _amountToMint,
        uint256 _totalMinted
    ) internal view returns (uint256) {
        uint256 availableTokens = maxSupply - _totalMinted;
        require(availableTokens > 0, "SupplyControl: No tokens left to mint");

        if (availableTokens < _amountToMint) {
            return availableTokens;
        }

        return _amountToMint;
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"name":"ECDSAInvalidSignature","type":"error"},{"inputs":[{"internalType":"uint256","name":"length","type":"uint256"}],"name":"ECDSAInvalidSignatureLength","type":"error"},{"inputs":[{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"ECDSAInvalidSignatureS","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"contractType","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"erc721Contract","outputs":[{"internalType":"contract IERC721Mintable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeRecipient","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAvailableTokens","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"maxSupply","type":"uint256"},{"internalType":"address","name":"signerAddress","type":"address"},{"internalType":"address","name":"feeRecipient","type":"address"},{"components":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"uint256","name":"percentage","type":"uint256"}],"internalType":"struct DTOs.Recipient[]","name":"recipients","type":"tuple[]"},{"internalType":"address","name":"erc721Address","type":"address"}],"name":"init","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_maxPerWallet","type":"uint256"},{"internalType":"uint256","name":"_pricePerToken","type":"uint256"},{"internalType":"address","name":"_coinAddress","type":"address"},{"internalType":"uint256","name":"_feePerToken","type":"uint256"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"mintsPerWallet","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":"","type":"uint256"}],"name":"recipients","outputs":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"uint256","name":"percentage","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_signerAddress","type":"address"}],"name":"setSignerAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"signerAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_coin","type":"address"}],"name":"totalEarnings","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":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_coinAddress","type":"address"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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