// File: @openzeppelin/contracts/access/AccessControl.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../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:
 *
 * ```
 * 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}:
 *
 * ```
 * 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.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    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 override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @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 override 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 override 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 override 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 `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @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 Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// File: @openzeppelin/contracts/access/IAccessControl.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @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.
     *
     * _Available since v3.1._
     */
    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 `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../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.
 *
 * By default, the owner account will be the one that deploys the contract. 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;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @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 {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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 {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _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);
    }
}

// File: @openzeppelin/contracts/interfaces/IERC2981.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;

import "../utils/introspection/IERC165.sol";

/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 *
 * _Available since v4.5._
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

// File: @openzeppelin/contracts/token/common/ERC2981.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/common/ERC2981.sol)

pragma solidity ^0.8.0;

import "../../interfaces/IERC2981.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information.
 *
 * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for
 * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first.
 *
 * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the
 * fee is specified in basis points by default.
 *
 * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See
 * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to
 * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported.
 *
 * _Available since v4.5._
 */
abstract contract ERC2981 is IERC2981, ERC165 {
    struct RoyaltyInfo {
        address receiver;
        uint96 royaltyFraction;
    }

    RoyaltyInfo private _defaultRoyaltyInfo;
    mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) {
        return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @inheritdoc IERC2981
     */
    function royaltyInfo(uint256 _tokenId, uint256 _salePrice) public view virtual override returns (address, uint256) {
        RoyaltyInfo memory royalty = _tokenRoyaltyInfo[_tokenId];

        if (royalty.receiver == address(0)) {
            royalty = _defaultRoyaltyInfo;
        }

        uint256 royaltyAmount = (_salePrice * royalty.royaltyFraction) / _feeDenominator();

        return (royalty.receiver, royaltyAmount);
    }

    /**
     * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a
     * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an
     * override.
     */
    function _feeDenominator() internal pure virtual returns (uint96) {
        return 10000;
    }

    /**
     * @dev Sets the royalty information that all ids in this contract will default to.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: invalid receiver");

        _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Removes default royalty information.
     */
    function _deleteDefaultRoyalty() internal virtual {
        delete _defaultRoyaltyInfo;
    }

    /**
     * @dev Sets the royalty information for a specific token id, overriding the global default.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setTokenRoyalty(
        uint256 tokenId,
        address receiver,
        uint96 feeNumerator
    ) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: Invalid parameters");

        _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Resets royalty information for the token id back to the global default.
     */
    function _resetTokenRoyalty(uint256 tokenId) internal virtual {
        delete _tokenRoyaltyInfo[tokenId];
    }
}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @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;
    }
}

// File: @openzeppelin/contracts/utils/introspection/ERC165.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./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);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @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);
}

// File: @openzeppelin/contracts/utils/Strings.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

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

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

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

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

// File: contracts/Contract.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.13;

import "./extensions/ERC721AOpensea.sol";
import "./NFTToken.sol";

contract PixelPolARoids is NFTToken, ERC721AOpensea { 
 string private _baseTokenURI;

 uint public MAX_SUPPLY = 282; 
 uint public COST = 0.165 ether;

 bool public mintEnabled = false;

 error ExceedsMaxPerTX();
 error ExceedsMaxSupply();
 error NoMismatchedOrigin();
 error MintNotActive();
 error WithdrawalFailed();
 error WrongETHValueSent();

 modifier enoughSupply(uint256 qty) {
 if (_totalMinted() + qty > MAX_SUPPLY) {
 revert ExceedsMaxSupply();
 }
 _;
 }

 constructor()
 ERC721A("PolARoidPortfolio", "PP")
 ERC721AOpensea()
 NFTToken()
 {}
 
 function mint(uint qty)
 external
 payable 
 enoughSupply(qty)
 { 
 if (!mintEnabled) revert MintNotActive();

 uint price = (COST * qty);
 
 _mint(msg.sender, qty);
 _refundIfOverPayment(price);
 }

 function _refundIfOverPayment(uint256 price) internal {
 if (msg.value < price) revert WrongETHValueSent();
 if (msg.value > price) {
 payable(msg.sender).transfer(msg.value - price); 
 }
 }

 function setMaxTokenSupply(uint256 maxSupply) public onlyOwner {
 MAX_SUPPLY = maxSupply;
 }

 function toggleMintEnabled() external onlyOwner {
 mintEnabled = !mintEnabled;
 }

 function numberMinted(address owner) public view returns (uint256) {
 return _numberMinted(owner);
 }

 function numberBurned(address owner) public view returns (uint256) {
 return _numberBurned(owner);
 }

 function totalBurned() public view returns (uint256) {
 return _totalBurned();
 }

 function setBaseURI(string calldata baseURI_) external onlyOwner {
 _baseTokenURI = baseURI_;
 }

 function supportsInterface(bytes4 interfaceId)
 public
 view
 virtual
 override(NFTToken, ERC721AOpensea)
 returns (bool)
 {
 return
 ERC721A.supportsInterface(interfaceId) ||
 ERC2981.supportsInterface(interfaceId) ||
 AccessControl.supportsInterface(interfaceId);
 }

 function _baseURI() internal view virtual override returns (string memory) {
 return _baseTokenURI;
 }

 function _startTokenId() internal view virtual override returns (uint256) {
 return 1;
 }

 function withdraw() external onlyOwner {
 (bool success, ) = msg.sender.call{value: address(this).balance}("");
 if (!success) revert WithdrawalFailed();
 }

 function whittersMint(uint256 quantity, address to) 
 external 
 onlyOwner
 enoughSupply(quantity)
 {
 _mint(to, quantity);
 }
}
// File: contracts/ERC721A.sol



// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import './IERC721A.sol';

/**
 * @dev Interface of ERC721 token receiver.
 */
interface ERC721A__IERC721Receiver {
 function onERC721Received(
 address operator,
 address from,
 uint256 tokenId,
 bytes calldata data
 ) external returns (bytes4);
}

/**
 * @title ERC721A
 *
 * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721)
 * Non-Fungible Token Standard, including the Metadata extension.
 * Optimized for lower gas during batch mints.
 *
 * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...)
 * starting from `_startTokenId()`.
 *
 * Assumptions:
 *
 * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256).
 */
contract ERC721A is IERC721A {
 // Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364).
 struct TokenApprovalRef {
 address value;
 }

 // =============================================================
 // CONSTANTS
 // =============================================================

 // Mask of an entry in packed address data.
 uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;

 // The bit position of `numberMinted` in packed address data.
 uint256 private constant _BITPOS_NUMBER_MINTED = 64;

 // The bit position of `numberBurned` in packed address data.
 uint256 private constant _BITPOS_NUMBER_BURNED = 128;

 // The bit position of `aux` in packed address data.
 uint256 private constant _BITPOS_AUX = 192;

 // Mask of all 256 bits in packed address data except the 64 bits for `aux`.
 uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;

 // The bit position of `startTimestamp` in packed ownership.
 uint256 private constant _BITPOS_START_TIMESTAMP = 160;

 // The bit mask of the `burned` bit in packed ownership.
 uint256 private constant _BITMASK_BURNED = 1 << 224;

 // The bit position of the `nextInitialized` bit in packed ownership.
 uint256 private constant _BITPOS_NEXT_INITIALIZED = 225;

 // The bit mask of the `nextInitialized` bit in packed ownership.
 uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225;

 // The bit position of `extraData` in packed ownership.
 uint256 private constant _BITPOS_EXTRA_DATA = 232;

 // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`.
 uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;

 // The mask of the lower 160 bits for addresses.
 uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;

 // The maximum `quantity` that can be minted with {_mintERC2309}.
 // This limit is to prevent overflows on the address data entries.
 // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309}
 // is required to cause an overflow, which is unrealistic.
 uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;

 // The `Transfer` event signature is given by:
 // `keccak256(bytes("Transfer(address,address,uint256)"))`.
 bytes32 private constant _TRANSFER_EVENT_SIGNATURE =
 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;

 // =============================================================
 // STORAGE
 // =============================================================

 // The next token ID to be minted.
 uint256 private _currentIndex;

 // The number of tokens burned.
 uint256 private _burnCounter;

 // Token name
 string private _name;

 // Token symbol
 string private _symbol;

 // Mapping from token ID to ownership details
 // An empty struct value does not necessarily mean the token is unowned.
 // See {_packedOwnershipOf} implementation for details.
 //
 // Bits Layout:
 // - [0..159] `addr`
 // - [160..223] `startTimestamp`
 // - [224] `burned`
 // - [225] `nextInitialized`
 // - [232..255] `extraData`
 mapping(uint256 => uint256) private _packedOwnerships;

 // Mapping owner address to address data.
 //
 // Bits Layout:
 // - [0..63] `balance`
 // - [64..127] `numberMinted`
 // - [128..191] `numberBurned`
 // - [192..255] `aux`
 mapping(address => uint256) private _packedAddressData;

 // Mapping from token ID to approved address.
 mapping(uint256 => TokenApprovalRef) private _tokenApprovals;

 // Mapping from owner to operator approvals
 mapping(address => mapping(address => bool)) private _operatorApprovals;

 // =============================================================
 // CONSTRUCTOR
 // =============================================================

 constructor(string memory name_, string memory symbol_) {
 _name = name_;
 _symbol = symbol_;
 _currentIndex = _startTokenId();
 }

 // =============================================================
 // TOKEN COUNTING OPERATIONS
 // =============================================================

 /**
 * @dev Returns the starting token ID.
 * To change the starting token ID, please override this function.
 */
 function _startTokenId() internal view virtual returns (uint256) {
 return 0;
 }

 /**
 * @dev Returns the next token ID to be minted.
 */
 function _nextTokenId() internal view virtual returns (uint256) {
 return _currentIndex;
 }

 /**
 * @dev Returns the total number of tokens in existence.
 * Burned tokens will reduce the count.
 * To get the total number of tokens minted, please see {_totalMinted}.
 */
 function totalSupply() public view virtual override returns (uint256) {
 // Counter underflow is impossible as _burnCounter cannot be incremented
 // more than `_currentIndex - _startTokenId()` times.
 unchecked {
 return _currentIndex - _burnCounter - _startTokenId();
 }
 }

 /**
 * @dev Returns the total amount of tokens minted in the contract.
 */
 function _totalMinted() internal view virtual returns (uint256) {
 // Counter underflow is impossible as `_currentIndex` does not decrement,
 // and it is initialized to `_startTokenId()`.
 unchecked {
 return _currentIndex - _startTokenId();
 }
 }

 /**
 * @dev Returns the total number of tokens burned.
 */
 function _totalBurned() internal view virtual returns (uint256) {
 return _burnCounter;
 }

 // =============================================================
 // ADDRESS DATA OPERATIONS
 // =============================================================

 /**
 * @dev Returns the number of tokens in `owner`'s account.
 */
 function balanceOf(address owner) public view virtual override returns (uint256) {
 if (owner == address(0)) revert BalanceQueryForZeroAddress();
 return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY;
 }

 /**
 * Returns the number of tokens minted by `owner`.
 */
 function _numberMinted(address owner) internal view returns (uint256) {
 return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY;
 }

 /**
 * Returns the number of tokens burned by or on behalf of `owner`.
 */
 function _numberBurned(address owner) internal view returns (uint256) {
 return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY;
 }

 /**
 * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
 */
 function _getAux(address owner) internal view returns (uint64) {
 return uint64(_packedAddressData[owner] >> _BITPOS_AUX);
 }

 /**
 * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
 * If there are multiple variables, please pack them into a uint64.
 */
 function _setAux(address owner, uint64 aux) internal virtual {
 uint256 packed = _packedAddressData[owner];
 uint256 auxCasted;
 // Cast `aux` with assembly to avoid redundant masking.
 assembly {
 auxCasted := aux
 }
 packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX);
 _packedAddressData[owner] = packed;
 }

 // =============================================================
 // IERC165
 // =============================================================

 /**
 * @dev Returns true if this contract implements the interface defined by
 * `interfaceId`. See the corresponding
 * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
 * to learn more about how these ids are created.
 *
 * This function call must use less than 30000 gas.
 */
 function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 // The interface IDs are constants representing the first 4 bytes
 // of the XOR of all function selectors in the interface.
 // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165)
 // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`)
 return
 interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
 interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
 interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
 }

 // =============================================================
 // IERC721Metadata
 // =============================================================

 /**
 * @dev Returns the token collection name.
 */
 function name() public view virtual override returns (string memory) {
 return _name;
 }

 /**
 * @dev Returns the token collection symbol.
 */
 function symbol() public view virtual override returns (string memory) {
 return _symbol;
 }

 /**
 * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
 */
 function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
 if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

 string memory baseURI = _baseURI();
 return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : '';
 }

 /**
 * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
 * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
 * by default, it can be overridden in child contracts.
 */
 function _baseURI() internal view virtual returns (string memory) {
 return '';
 }

 // =============================================================
 // OWNERSHIPS OPERATIONS
 // =============================================================

 /**
 * @dev Returns the owner of the `tokenId` token.
 *
 * Requirements:
 *
 * - `tokenId` must exist.
 */
 function ownerOf(uint256 tokenId) public view virtual override returns (address) {
 return address(uint160(_packedOwnershipOf(tokenId)));
 }

 /**
 * @dev Gas spent here starts off proportional to the maximum mint batch size.
 * It gradually moves to O(1) as tokens get transferred around over time.
 */
 function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) {
 return _unpackedOwnership(_packedOwnershipOf(tokenId));
 }

 /**
 * @dev Returns the unpacked `TokenOwnership` struct at `index`.
 */
 function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) {
 return _unpackedOwnership(_packedOwnerships[index]);
 }

 /**
 * @dev Initializes the ownership slot minted at `index` for efficiency purposes.
 */
 function _initializeOwnershipAt(uint256 index) internal virtual {
 if (_packedOwnerships[index] == 0) {
 _packedOwnerships[index] = _packedOwnershipOf(index);
 }
 }

 /**
 * Returns the packed ownership data of `tokenId`.
 */
 function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) {
 uint256 curr = tokenId;

 unchecked {
 if (_startTokenId() <= curr)
 if (curr < _currentIndex) {
 uint256 packed = _packedOwnerships[curr];
 // If not burned.
 if (packed & _BITMASK_BURNED == 0) {
 // Invariant:
 // There will always be an initialized ownership slot
 // (i.e. `ownership.addr != address(0) && ownership.burned == false`)
 // before an unintialized ownership slot
 // (i.e. `ownership.addr == address(0) && ownership.burned == false`)
 // Hence, `curr` will not underflow.
 //
 // We can directly compare the packed value.
 // If the address is zero, packed will be zero.
 while (packed == 0) {
 packed = _packedOwnerships[--curr];
 }
 return packed;
 }
 }
 }
 revert OwnerQueryForNonexistentToken();
 }

 /**
 * @dev Returns the unpacked `TokenOwnership` struct from `packed`.
 */
 function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) {
 ownership.addr = address(uint160(packed));
 ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP);
 ownership.burned = packed & _BITMASK_BURNED != 0;
 ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA);
 }

 /**
 * @dev Packs ownership data into a single uint256.
 */
 function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) {
 assembly {
 // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
 owner := and(owner, _BITMASK_ADDRESS)
 // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`.
 result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags))
 }
 }

 /**
 * @dev Returns the `nextInitialized` flag set if `quantity` equals 1.
 */
 function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) {
 // For branchless setting of the `nextInitialized` flag.
 assembly {
 // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`.
 result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1))
 }
 }

 // =============================================================
 // APPROVAL OPERATIONS
 // =============================================================

 /**
 * @dev Gives permission to `to` to transfer `tokenId` token to another account.
 * The approval is cleared when the token is transferred.
 *
 * Only a single account can be approved at a time, so approving the
 * zero address clears previous approvals.
 *
 * Requirements:
 *
  * - The caller must own the token or be an approved operator.
 * - `tokenId` must exist.
 *
 * Emits an {Approval} event.
 */
 function approve(address to, uint256 tokenId) public payable virtual override {
 address owner = ownerOf(tokenId);

 if (_msgSenderERC721A() != owner)
 if (!isApprovedForAll(owner, _msgSenderERC721A())) {
 revert ApprovalCallerNotOwnerNorApproved();
 }

 _tokenApprovals[tokenId].value = to;
 emit Approval(owner, to, tokenId);
 }

 /**
 * @dev Returns the account approved for `tokenId` token.
 *
 * Requirements:
 *
 * - `tokenId` must exist.
 */
 function getApproved(uint256 tokenId) public view virtual override returns (address) {
 if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

 return _tokenApprovals[tokenId].value;
 }

 /**
 * @dev Approve or remove `operator` as an operator for the caller.
 * Operators can call {transferFrom} or {safeTransferFrom}
 * for any token owned by the caller.
 *
 * Requirements:
 *
 * - The `operator` cannot be the caller.
 *
 * Emits an {ApprovalForAll} event.
 */
 function setApprovalForAll(address operator, bool approved) public virtual override {
 _operatorApprovals[_msgSenderERC721A()][operator] = approved;
 emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
 }

 /**
 * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
 *
 * See {setApprovalForAll}.
 */
 function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
 return _operatorApprovals[owner][operator];
 }

 /**
 * @dev Returns whether `tokenId` exists.
 *
 * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
 *
 * Tokens start existing when they are minted. See {_mint}.
 */
 function _exists(uint256 tokenId) internal view virtual returns (bool) {
 return
 _startTokenId() <= tokenId &&
 tokenId < _currentIndex && // If within bounds,
 _packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned.
 }

 /**
 * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`.
 */
 function _isSenderApprovedOrOwner(
 address approvedAddress,
 address owner,
 address msgSender
 ) private pure returns (bool result) {
 assembly {
 // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
 owner := and(owner, _BITMASK_ADDRESS)
 // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.
 msgSender := and(msgSender, _BITMASK_ADDRESS)
 // `msgSender == owner || msgSender == approvedAddress`.
 result := or(eq(msgSender, owner), eq(msgSender, approvedAddress))
 }
 }

 /**
 * @dev Returns the storage slot and value for the approved address of `tokenId`.
 */
 function _getApprovedSlotAndAddress(uint256 tokenId)
 private
 view
 returns (uint256 approvedAddressSlot, address approvedAddress)
 {
 TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId];
 // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`.
 assembly {
 approvedAddressSlot := tokenApproval.slot
 approvedAddress := sload(approvedAddressSlot)
 }
 }

 // =============================================================
 // TRANSFER OPERATIONS
 // =============================================================

 /**
 * @dev Transfers `tokenId` from `from` to `to`.
 *
 * Requirements:
 *
 * - `from` cannot be the zero address.
 * - `to` cannot be the zero address.
 * - `tokenId` token must be owned by `from`.
 * - If the caller is not `from`, it must be approved to move this token
 * by either {approve} or {setApprovalForAll}.
 *
 * Emits a {Transfer} event.
 */
 function transferFrom(
 address from,
 address to,
 uint256 tokenId
 ) public payable virtual override {
 uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

 if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner();

 (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);

 // The nested ifs save around 20+ gas over a compound boolean condition.
 if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
 if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();

 if (to == address(0)) revert TransferToZeroAddress();

 _beforeTokenTransfers(from, to, tokenId, 1);

 // Clear approvals from the previous owner.
 assembly {
 if approvedAddress {
 // This is equivalent to `delete _tokenApprovals[tokenId]`.
 sstore(approvedAddressSlot, 0)
 }
 }

 // Underflow of the sender's balance is impossible because we check for
 // ownership above and the recipient's balance can't realistically overflow.
 // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
 unchecked {
 // We can directly increment and decrement the balances.
 --_packedAddressData[from]; // Updates: `balance -= 1`.
 ++_packedAddressData[to]; // Updates: `balance += 1`.

 // Updates:
 // - `address` to the next owner.
 // - `startTimestamp` to the timestamp of transfering.
 // - `burned` to `false`.
 // - `nextInitialized` to `true`.
 _packedOwnerships[tokenId] = _packOwnershipData(
 to,
 _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked)
 );

 // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
 if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
 uint256 nextTokenId = tokenId + 1;
 // If the next slot's address is zero and not burned (i.e. packed value is zero).
 if (_packedOwnerships[nextTokenId] == 0) {
 // If the next slot is within bounds.
 if (nextTokenId != _currentIndex) {
 // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
 _packedOwnerships[nextTokenId] = prevOwnershipPacked;
 }
 }
 }
 }

 emit Transfer(from, to, tokenId);
 _afterTokenTransfers(from, to, tokenId, 1);
 }

 /**
 * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
 */
 function safeTransferFrom(
 address from,
 address to,
 uint256 tokenId
 ) public payable virtual override {
 safeTransferFrom(from, to, tokenId, '');
 }

 /**
 * @dev Safely transfers `tokenId` token from `from` to `to`.
 *
 * Requirements:
 *
 * - `from` cannot be the zero address.
 * - `to` cannot be the zero address.
 * - `tokenId` token must exist and be owned by `from`.
 * - If the caller is not `from`, it must be approved to move this token
 * by either {approve} or {setApprovalForAll}.
 * - If `to` refers to a smart contract, it must implement
 * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
 *
 * Emits a {Transfer} event.
 */
 function safeTransferFrom(
 address from,
 address to,
 uint256 tokenId,
 bytes memory _data
 ) public payable virtual override {
 transferFrom(from, to, tokenId);
 if (to.code.length != 0)
 if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
 revert TransferToNonERC721ReceiverImplementer();
 }
 }

 /**
 * @dev Hook that is called before a set of serially-ordered token IDs
 * are about to be transferred. This includes minting.
 * And also called before burning one token.
 *
 * `startTokenId` - the first token ID to be transferred.
 * `quantity` - the amount to be transferred.
 *
 * Calling conditions:
 *
 * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
 * transferred to `to`.
 * - When `from` is zero, `tokenId` will be minted for `to`.
 * - When `to` is zero, `tokenId` will be burned by `from`.
 * - `from` and `to` are never both zero.
 */
 function _beforeTokenTransfers(
 address from,
 address to,
 uint256 startTokenId,
 uint256 quantity
 ) internal virtual {}

 /**
 * @dev Hook that is called after a set of serially-ordered token IDs
 * have been transferred. This includes minting.
 * And also called after one token has been burned.
 *
 * `startTokenId` - the first token ID to be transferred.
 * `quantity` - the amount to be transferred.
 *
 * Calling conditions:
 *
 * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
 * transferred to `to`.
 * - When `from` is zero, `tokenId` has been minted for `to`.
 * - When `to` is zero, `tokenId` has been burned by `from`.
 * - `from` and `to` are never both zero.
 */
 function _afterTokenTransfers(
 address from,
 address to,
 uint256 startTokenId,
 uint256 quantity
 ) internal virtual {}

 /**
 * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.
 *
 * `from` - Previous owner of the given token ID.
 * `to` - Target address that will receive the token.
 * `tokenId` - Token ID to be transferred.
 * `_data` - Optional data to send along with the call.
 *
 * Returns whether the call correctly returned the expected magic value.
 */
 function _checkContractOnERC721Received(
 address from,
 address to,
 uint256 tokenId,
 bytes memory _data
 ) private returns (bool) {
 try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (
 bytes4 retval
 ) {
 return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector;
 } catch (bytes memory reason) {
 if (reason.length == 0) {
 revert TransferToNonERC721ReceiverImplementer();
 } else {
 assembly {
 revert(add(32, reason), mload(reason))
 }
 }
 }
 }

 // =============================================================
 // MINT OPERATIONS
 // =============================================================

 /**
 * @dev Mints `quantity` tokens and transfers them to `to`.
 *
 * Requirements:
 *
 * - `to` cannot be the zero address.
 * - `quantity` must be greater than 0.
 *
 * Emits a {Transfer} event for each mint.
 */
 function _mint(address to, uint256 quantity) internal virtual {
 uint256 startTokenId = _currentIndex;
 if (quantity == 0) revert MintZeroQuantity();

 _beforeTokenTransfers(address(0), to, startTokenId, quantity);

 // Overflows are incredibly unrealistic.
 // `balance` and `numberMinted` have a maximum limit of 2**64.
 // `tokenId` has a maximum limit of 2**256.
 unchecked {
 // Updates:
 // - `balance += quantity`.
 // - `numberMinted += quantity`.
 //
 // We can directly add to the `balance` and `numberMinted`.
 _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);

 // Updates:
 // - `address` to the owner.
 // - `startTimestamp` to the timestamp of minting.
 // - `burned` to `false`.
 // - `nextInitialized` to `quantity == 1`.
 _packedOwnerships[startTokenId] = _packOwnershipData(
  to,
 _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
 );

 uint256 toMasked;
 uint256 end = startTokenId + quantity;

 // Use assembly to loop and emit the `Transfer` event for gas savings.
 // The duplicated `log4` removes an extra check and reduces stack juggling.
 // The assembly, together with the surrounding Solidity code, have been
 // delicately arranged to nudge the compiler into producing optimized opcodes.
 assembly {
 // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.
 toMasked := and(to, _BITMASK_ADDRESS)
 // Emit the `Transfer` event.
 log4(
 0, // Start of data (0, since no data).
 0, // End of data (0, since no data).
 _TRANSFER_EVENT_SIGNATURE, // Signature.
 0, // `address(0)`.
 toMasked, // `to`.
 startTokenId // `tokenId`.
 )

 // The `iszero(eq(,))` check ensures that large values of `quantity`
 // that overflows uint256 will make the loop run out of gas.
 // The compiler will optimize the `iszero` away for performance.
 for {
 let tokenId := add(startTokenId, 1)
 } iszero(eq(tokenId, end)) {
 tokenId := add(tokenId, 1)
 } {
 // Emit the `Transfer` event. Similar to above.
 log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)
 }
 }
 if (toMasked == 0) revert MintToZeroAddress();

 _currentIndex = end;
 }
 _afterTokenTransfers(address(0), to, startTokenId, quantity);
 }

 /**
 * @dev Mints `quantity` tokens and transfers them to `to`.
 *
 * This function is intended for efficient minting only during contract creation.
 *
 * It emits only one {ConsecutiveTransfer} as defined in
 * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),
 * instead of a sequence of {Transfer} event(s).
 *
 * Calling this function outside of contract creation WILL make your contract
 * non-compliant with the ERC721 standard.
 * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309
 * {ConsecutiveTransfer} event is only permissible during contract creation.
 *
 * Requirements:
 *
 * - `to` cannot be the zero address.
 * - `quantity` must be greater than 0.
 *
 * Emits a {ConsecutiveTransfer} event.
 */
 function _mintERC2309(address to, uint256 quantity) internal virtual {
 uint256 startTokenId = _currentIndex;
 if (to == address(0)) revert MintToZeroAddress();
 if (quantity == 0) revert MintZeroQuantity();
 if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit();

 _beforeTokenTransfers(address(0), to, startTokenId, quantity);

 // Overflows are unrealistic due to the above check for `quantity` to be below the limit.
 unchecked {
 // Updates:
 // - `balance += quantity`.
 // - `numberMinted += quantity`.
 //
 // We can directly add to the `balance` and `numberMinted`.
 _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);

 // Updates:
 // - `address` to the owner.
 // - `startTimestamp` to the timestamp of minting.
 // - `burned` to `false`.
 // - `nextInitialized` to `quantity == 1`.
 _packedOwnerships[startTokenId] = _packOwnershipData(
 to,
 _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
 );

 emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to);

 _currentIndex = startTokenId + quantity;
 }
 _afterTokenTransfers(address(0), to, startTokenId, quantity);
 }

 /**
 * @dev Safely mints `quantity` tokens and transfers them to `to`.
 *
 * Requirements:
 *
 * - If `to` refers to a smart contract, it must implement
 * {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
 * - `quantity` must be greater than 0.
 *
 * See {_mint}.
 *
 * Emits a {Transfer} event for each mint.
 */
 function _safeMint(
 address to,
 uint256 quantity,
 bytes memory _data
 ) internal virtual {
 _mint(to, quantity);

 unchecked {
 if (to.code.length != 0) {
 uint256 end = _currentIndex;
 uint256 index = end - quantity;
 do {
 if (!_checkContractOnERC721Received(address(0), to, index++, _data)) {
 revert TransferToNonERC721ReceiverImplementer();
 }
 } while (index < end);
 // Reentrancy protection.
 if (_currentIndex != end) revert();
 }
 }
 }

 /**
 * @dev Equivalent to `_safeMint(to, quantity, '')`.
 */
 function _safeMint(address to, uint256 quantity) internal virtual {
 _safeMint(to, quantity, '');
 }

 // =============================================================
 // BURN OPERATIONS
 // =============================================================

 /**
 * @dev Equivalent to `_burn(tokenId, false)`.
 */
 function _burn(uint256 tokenId) internal virtual {
 _burn(tokenId, false);
 }

 /**
 * @dev Destroys `tokenId`.
 * The approval is cleared when the token is burned.
 *
 * Requirements:
 *
 * - `tokenId` must exist.
 *
 * Emits a {Transfer} event.
 */
 function _burn(uint256 tokenId, bool approvalCheck) internal virtual {
 uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

 address from = address(uint160(prevOwnershipPacked));

 (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);

 if (approvalCheck) {
 // The nested ifs save around 20+ gas over a compound boolean condition.
 if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
 if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();
 }

 _beforeTokenTransfers(from, address(0), tokenId, 1);

 // Clear approvals from the previous owner.
 assembly {
 if approvedAddress {
 // This is equivalent to `delete _tokenApprovals[tokenId]`.
 sstore(approvedAddressSlot, 0)
 }
 }

 // Underflow of the sender's balance is impossible because we check for
 // ownership above and the recipient's balance can't realistically overflow.
 // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
 unchecked {
 // Updates:
 // - `balance -= 1`.
 // - `numberBurned += 1`.
 //
 // We can directly decrement the balance, and increment the number burned.
 // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`.
 _packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1;

 // Updates:
 // - `address` to the last owner.
 // - `startTimestamp` to the timestamp of burning.
 // - `burned` to `true`.
 // - `nextInitialized` to `true`.
 _packedOwnerships[tokenId] = _packOwnershipData(
 from,
 (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked)
 );

 // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
 if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
 uint256 nextTokenId = tokenId + 1;
 // If the next slot's address is zero and not burned (i.e. packed value is zero).
 if (_packedOwnerships[nextTokenId] == 0) {
 // If the next slot is within bounds.
 if (nextTokenId != _currentIndex) {
 // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
 _packedOwnerships[nextTokenId] = prevOwnershipPacked;
 }
 }
 }
 }

 emit Transfer(from, address(0), tokenId);
 _afterTokenTransfers(from, address(0), tokenId, 1);

 // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
 unchecked {
 _burnCounter++;
 }
 }

 // =============================================================
 // EXTRA DATA OPERATIONS
 // =============================================================

 /**
 * @dev Directly sets the extra data for the ownership data `index`.
 */
 function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {
 uint256 packed = _packedOwnerships[index];
 if (packed == 0) revert OwnershipNotInitializedForExtraData();
 uint256 extraDataCasted;
 // Cast `extraData` with assembly to avoid redundant masking.
 assembly {
 extraDataCasted := extraData
 }
 packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA);
 _packedOwnerships[index] = packed;
 }

 /**
 * @dev Called during each token transfer to set the 24bit `extraData` field.
 * Intended to be overridden by the cosumer contract.
 *
 * `previousExtraData` - the value of `extraData` before transfer.
 *
 * Calling conditions:
 *
 * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
 * transferred to `to`.
 * - When `from` is zero, `tokenId` will be minted for `to`.
 * - When `to` is zero, `tokenId` will be burned by `from`.
 * - `from` and `to` are never both zero.
 */
 function _extraData(
 address from,
 address to,
 uint24 previousExtraData
 ) internal view virtual returns (uint24) {}

 /**
 * @dev Returns the next extra data for the packed ownership data.
 * The returned result is shifted into position.
 */
 function _nextExtraData(
 address from,
 address to,
 uint256 prevOwnershipPacked
 ) private view returns (uint256) {
 uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA);
 return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA;
 }

 // =============================================================
 // OTHER OPERATIONS
 // =============================================================

 /**
 * @dev Returns the message sender (defaults to `msg.sender`).
 *
 * If you are writing GSN compatible contracts, you need to override this function.
 */
 function _msgSenderERC721A() internal view virtual returns (address) {
 return msg.sender;
 }

 /**
 * @dev Converts a uint256 to its ASCII string decimal representation.
 */
 function _toString(uint256 value) internal pure virtual returns (string memory str) {
 assembly {
 // The maximum value of a uint256 contains 78 digits (1 byte per digit), but
 // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.
 // We will need 1 word for the trailing zeros padding, 1 word for the length,
 // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0.
 let m := add(mload(0x40), 0xa0)
 // Update the free memory pointer to allocate.
 mstore(0x40, m)
 // Assign the `str` to the end.
 str := sub(m, 0x20)
 // Zeroize the slot after the string.
 mstore(str, 0)

 // Cache the end of the memory to calculate the length later.
 let end := str

 // We write the string from rightmost digit to leftmost digit.
 // The following is essentially a do-while loop that also handles the zero case.
 // prettier-ignore
 for { let temp := value } 1 {} {
 str := sub(str, 1)
 // Write the character to the pointer.
 // The ASCII index of the '0' character is 48.
 mstore8(str, add(48, mod(temp, 10)))
 // Keep dividing `temp` until zero.
 temp := div(temp, 10)
 // prettier-ignore
 if iszero(temp) { break }
 }

 let length := sub(end, str)
 // Move the pointer 32 bytes leftwards to make room for the length.
 str := sub(str, 0x20)
 // Store the length.
 mstore(str, length)
 }
 }
}
// File: contracts/extensions/ERC721ABurnable.sol



// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.2
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import './IERC721ABurnable.sol';
import '../ERC721A.sol';

/**
 * @title ERC721ABurnable.
 *
 * @dev ERC721A token that can be irreversibly burned (destroyed).
 */
abstract contract ERC721ABurnable is ERC721A, IERC721ABurnable {
 /**
 * @dev Burns `tokenId`. See {ERC721A-_burn}.
 *
 * Requirements:
 *
 * - The caller must own `tokenId` or be an approved operator.
 */
 function burn(uint256 tokenId) public virtual override {
 _burn(tokenId, true);
 }
}

// File: contracts/extensions/ERC721AOpensea.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;

import "./ERC721AQueryable.sol";
import "./ERC721ABurnable.sol";
import "./OperatorFilterer.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

abstract contract ERC721AOpensea is
 ERC721AQueryable,
 ERC721ABurnable,
 OperatorFilterer,
 Ownable
{
 bool public operatorFilteringEnabled;

 constructor() {
 _registerForOperatorFiltering();
 operatorFilteringEnabled = true;
 }

 /***************************************************************************
 * Operator Filterer
 */

 function setApprovalForAll(address operator, bool approved)
 public
 override(IERC721A, ERC721A)
 onlyAllowedOperatorApproval(operator)
 {
 super.setApprovalForAll(operator, approved);
 }

 function approve(address operator, uint256 tokenId)
 public
 payable
 override(IERC721A, ERC721A)
 onlyAllowedOperatorApproval(operator)
 {
 super.approve(operator, tokenId);
 }

 function transferFrom(
 address from,
 address to,
 uint256 tokenId
 ) public payable override(IERC721A, ERC721A) onlyAllowedOperator(from) {
 super.transferFrom(from, to, tokenId);
 }

 function safeTransferFrom(
 address from,
 address to,
 uint256 tokenId
 ) public payable override(IERC721A, ERC721A) onlyAllowedOperator(from) {
 super.safeTransferFrom(from, to, tokenId);
 }

 function safeTransferFrom(
 address from,
 address to,
 uint256 tokenId,
 bytes memory data
 ) public payable override(IERC721A, ERC721A) onlyAllowedOperator(from) {
 super.safeTransferFrom(from, to, tokenId, data);
 }

 function supportsInterface(bytes4 interfaceId)
 public
 view
 virtual
 override(IERC721A, ERC721A)
 returns (bool)
 {
 // Supports the following `interfaceId`s:
 // - IERC165: 0x01ffc9a7
 // - IERC721: 0x80ac58cd
 // - IERC721Metadata: 0x5b5e139f
 return ERC721A.supportsInterface(interfaceId);
 }

 function setOperatorFilteringEnabled(bool value) public onlyOwner {
 operatorFilteringEnabled = value;
 }

 function _operatorFilteringEnabled() internal view override returns (bool) {
 return operatorFilteringEnabled;
 }

 function _isPriorityOperator(address operator)
 internal
 pure
 override
 returns (bool)
 {
 // OpenSea Seaport Conduit:
 // https://etherscan.io/address/0x1E0049783F008A0085193E00003D00cd54003c71
 // https://goerli.etherscan.io/address/0x1E0049783F008A0085193E00003D00cd54003c71
 return operator == address(0x1E0049783F008A0085193E00003D00cd54003c71);
 }
}
// File: contracts/extensions/ERC721AQueryable.sol



// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.2
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import './IERC721AQueryable.sol';
import '../ERC721A.sol';

/**
 * @title ERC721AQueryable.
 *
 * @dev ERC721A subclass with convenience query functions.
 */
abstract contract ERC721AQueryable is ERC721A, IERC721AQueryable {
 /**
 * @dev Returns the `TokenOwnership` struct at `tokenId` without reverting.
 *
 * If the `tokenId` is out of bounds:
 *
 * - `addr = address(0)`
 * - `startTimestamp = 0`
 * - `burned = false`
 * - `extraData = 0`
 *
 * If the `tokenId` is burned:
 *
 * - `addr = <Address of owner before token was burned>`
 * - `startTimestamp = <Timestamp when token was burned>`
 * - `burned = true`
 * - `extraData = <Extra data when token was burned>`
 *
 * Otherwise:
 *
 * - `addr = <Address of owner>`
 * - `startTimestamp = <Timestamp of start of ownership>`
 * - `burned = false`
 * - `extraData = <Extra data at start of ownership>`
 */
 function explicitOwnershipOf(uint256 tokenId) public view virtual override returns (TokenOwnership memory) {
 TokenOwnership memory ownership;
 if (tokenId < _startTokenId() || tokenId >= _nextTokenId()) {
 return ownership;
 }
 ownership = _ownershipAt(tokenId);
 if (ownership.burned) {
 return ownership;
 }
 return _ownershipOf(tokenId);
 }

 /**
 * @dev Returns an array of `TokenOwnership` structs at `tokenIds` in order.
 * See {ERC721AQueryable-explicitOwnershipOf}
 */
 function explicitOwnershipsOf(uint256[] calldata tokenIds)
 external
 view
 virtual
 override
 returns (TokenOwnership[] memory)
 {
 unchecked {
 uint256 tokenIdsLength = tokenIds.length;
 TokenOwnership[] memory ownerships = new TokenOwnership[](tokenIdsLength);
 for (uint256 i; i != tokenIdsLength; ++i) {
 ownerships[i] = explicitOwnershipOf(tokenIds[i]);
 }
 return ownerships;
 }
 }

 /**
 * @dev Returns an array of token IDs owned by `owner`,
 * in the range [`start`, `stop`)
 * (i.e. `start <= tokenId < stop`).
 *
 * This function allows for tokens to be queried if the collection
 * grows too big for a single call of {ERC721AQueryable-tokensOfOwner}.
 *
 * Requirements:
 *
 * - `start < stop`
 */
 function tokensOfOwnerIn(
 address owner,
 uint256 start,
 uint256 stop
 ) external view virtual override returns (uint256[] memory) {
 unchecked {
 if (start >= stop) revert InvalidQueryRange();
 uint256 tokenIdsIdx;
 uint256 stopLimit = _nextTokenId();
 // Set `start = max(start, _startTokenId())`.
 if (start < _startTokenId()) {
 start = _startTokenId();
 }
 // Set `stop = min(stop, stopLimit)`.
 if (stop > stopLimit) {
 stop = stopLimit;
 }
 uint256 tokenIdsMaxLength = balanceOf(owner);
 // Set `tokenIdsMaxLength = min(balanceOf(owner), stop - start)`,
 // to cater for cases where `balanceOf(owner)` is too big.
 if (start < stop) {
 uint256 rangeLength = stop - start;
 if (rangeLength < tokenIdsMaxLength) {
 tokenIdsMaxLength = rangeLength;
 }
 } else {
 tokenIdsMaxLength = 0;
 }
 uint256[] memory tokenIds = new uint256[](tokenIdsMaxLength);
 if (tokenIdsMaxLength == 0) {
 return tokenIds;
 }
 // We need to call `explicitOwnershipOf(start)`,
 // because the slot at `start` may not be initialized.
 TokenOwnership memory ownership = explicitOwnershipOf(start);
 address currOwnershipAddr;
 // If the starting slot exists (i.e. not burned), initialize `currOwnershipAddr`.
 // `ownership.address` will not be zero, as `start` is clamped to the valid token ID range.
 if (!ownership.burned) {
 currOwnershipAddr = ownership.addr;
 }
 for (uint256 i = start; i != stop && tokenIdsIdx != tokenIdsMaxLength; ++i) {
 ownership = _ownershipAt(i);
 if (ownership.burned) {
 continue;
 }
 if (ownership.addr != address(0)) {
 currOwnershipAddr = ownership.addr;
 }
 if (currOwnershipAddr == owner) {
 tokenIds[tokenIdsIdx++] = i;
 }
 }
 // Downsize the array to fit.
 assembly {
 mstore(tokenIds, tokenIdsIdx)
 }
 return tokenIds;
 }
 }

 /**
 * @dev Returns an array of token IDs owned by `owner`.
 *
 * This function scans the ownership mapping and is O(`totalSupply`) in complexity.
 * It is meant to be called off-chain.
 *
 * See {ERC721AQueryable-tokensOfOwnerIn} for splitting the scan into
 * multiple smaller scans if the collection is large enough to cause
 * an out-of-gas error (10K collections should be fine).
 */
 function tokensOfOwner(address owner) external view virtual override returns (uint256[] memory) {
 unchecked {
 uint256 tokenIdsIdx;
 address currOwnershipAddr;
 uint256 tokenIdsLength = balanceOf(owner);
 uint256[] memory tokenIds = new uint256[](tokenIdsLength);
 TokenOwnership memory ownership;
 for (uint256 i = _startTokenId(); tokenIdsIdx != tokenIdsLength; ++i) {
 ownership = _ownershipAt(i);
 if (ownership.burned) {
 continue;
 }
 if (ownership.addr != address(0)) {
 currOwnershipAddr = ownership.addr;
 }
 if (currOwnershipAddr == owner) {
 tokenIds[tokenIdsIdx++] = i;
 }
 }
 return tokenIds;
 }
 }
}

// File: contracts/extensions/IERC721ABurnable.sol



// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.2
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import '../IERC721A.sol';

/**
 * @dev Interface of ERC721ABurnable.
 */
interface IERC721ABurnable is IERC721A {
 /**
 * @dev Burns `tokenId`. See {ERC721A-_burn}.
 *
 * Requirements:
 *
 * - The caller must own `tokenId` or be an approved operator.
 */
 function burn(uint256 tokenId) external;
}

// File: contracts/extensions/IERC721AQueryable.sol



// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.2
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import '../IERC721A.sol';

/**
 * @dev Interface of ERC721AQueryable.
 */
interface IERC721AQueryable is IERC721A {
 /**
 * Invalid query range (`start` >= `stop`).
 */
 error InvalidQueryRange();

 /**
 * @dev Returns the `TokenOwnership` struct at `tokenId` without reverting.
 *
 * If the `tokenId` is out of bounds:
 *
 * - `addr = address(0)`
 * - `startTimestamp = 0`
 * - `burned = false`
 * - `extraData = 0`
 *
 * If the `tokenId` is burned:
 *
 * - `addr = <Address of owner before token was burned>`
 * - `startTimestamp = <Timestamp when token was burned>`
 * - `burned = true`
 * - `extraData = <Extra data when token was burned>`
 *
 * Otherwise:
 *
 * - `addr = <Address of owner>`
 * - `startTimestamp = <Timestamp of start of ownership>`
 * - `burned = false`
 * - `extraData = <Extra data at start of ownership>`
 */
 function explicitOwnershipOf(uint256 tokenId) external view returns (TokenOwnership memory);

 /**
 * @dev Returns an array of `TokenOwnership` structs at `tokenIds` in order.
 * See {ERC721AQueryable-explicitOwnershipOf}
 */
 function explicitOwnershipsOf(uint256[] memory tokenIds) external view returns (TokenOwnership[] memory);

 /**
 * @dev Returns an array of token IDs owned by `owner`,
 * in the range [`start`, `stop`)
 * (i.e. `start <= tokenId < stop`).
 *
 * This function allows for tokens to be queried if the collection
 * grows too big for a single call of {ERC721AQueryable-tokensOfOwner}.
 *
 * Requirements:
 *
 * - `start < stop`
 */
 function tokensOfOwnerIn(
 address owner,
 uint256 start,
 uint256 stop
 ) external view returns (uint256[] memory);

 /**
 * @dev Returns an array of token IDs owned by `owner`.
 *
 * This function scans the ownership mapping and is O(`totalSupply`) in complexity.
 * It is meant to be called off-chain.
 *
 * See {ERC721AQueryable-tokensOfOwnerIn} for splitting the scan into
 * multiple smaller scans if the collection is large enough to cause
 * an out-of-gas error (10K collections should be fine).
 */
 function tokensOfOwner(address owner) external view returns (uint256[] memory);
}

// File: contracts/extensions/OperatorFilterer.sol



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

/// @notice Optimized and flexible operator filterer to abide to OpenSea's
/// mandatory on-chain royalty enforcement in order for new collections to
/// receive royalties.
/// For more information, see:
/// See: https://github.com/ProjectOpenSea/operator-filter-registry
abstract contract OperatorFilterer {
 /// @dev The default OpenSea operator blocklist subscription.
 address internal constant _DEFAULT_SUBSCRIPTION = 0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6;

 /// @dev The OpenSea operator filter registry.
 address internal constant _OPERATOR_FILTER_REGISTRY = 0x000000000000AAeB6D7670E522A718067333cd4E;

 /// @dev Registers the current contract to OpenSea's operator filter,
 /// and subscribe to the default OpenSea operator blocklist.
 /// Note: Will not revert nor update existing settings for repeated registration.
 function _registerForOperatorFiltering() internal virtual {
 _registerForOperatorFiltering(_DEFAULT_SUBSCRIPTION, true);
 }

 /// @dev Registers the current contract to OpenSea's operator filter.
 /// Note: Will not revert nor update existing settings for repeated registration.
 function _registerForOperatorFiltering(address subscriptionOrRegistrantToCopy, bool subscribe)
 internal
 virtual
 {
 /// @solidity memory-safe-assembly
 assembly {
 let functionSelector := 0x7d3e3dbe // `registerAndSubscribe(address,address)`.

 // Clean the upper 96 bits of `subscriptionOrRegistrantToCopy` in case they are dirty.
 subscriptionOrRegistrantToCopy := shr(96, shl(96, subscriptionOrRegistrantToCopy))

 for {} iszero(subscribe) {} {
 if iszero(subscriptionOrRegistrantToCopy) {
 functionSelector := 0x4420e486 // `register(address)`.
 break
 }
 functionSelector := 0xa0af2903 // `registerAndCopyEntries(address,address)`.
 break
 }
 // Store the function selector.
 mstore(0x00, shl(224, functionSelector))
 // Store the `address(this)`.
 mstore(0x04, address())
 // Store the `subscriptionOrRegistrantToCopy`.
 mstore(0x24, subscriptionOrRegistrantToCopy)
 // Register into the registry.
 if iszero(call(gas(), _OPERATOR_FILTER_REGISTRY, 0, 0x00, 0x44, 0x00, 0x04)) {
 // If the function selector has not been overwritten,
  // it is an out-of-gas error.
 if eq(shr(224, mload(0x00)), functionSelector) {
 // To prevent gas under-estimation.
 revert(0, 0)
 }
 }
 // Restore the part of the free memory pointer that was overwritten,
 // which is guaranteed to be zero, because of Solidity's memory size limits.
 mstore(0x24, 0)
 }
 }

 /// @dev Modifier to guard a function and revert if the caller is a blocked operator.
 modifier onlyAllowedOperator(address from) virtual {
 if (from != msg.sender) {
 if (!_isPriorityOperator(msg.sender)) {
 if (_operatorFilteringEnabled()) _revertIfBlocked(msg.sender);
 }
 }
 _;
 }

 /// @dev Modifier to guard a function from approving a blocked operator..
 modifier onlyAllowedOperatorApproval(address operator) virtual {
 if (!_isPriorityOperator(operator)) {
 if (_operatorFilteringEnabled()) _revertIfBlocked(operator);
 }
 _;
 }

 /// @dev Helper function that reverts if the `operator` is blocked by the registry.
 function _revertIfBlocked(address operator) private view {
 /// @solidity memory-safe-assembly
 assembly {
 // Store the function selector of `isOperatorAllowed(address,address)`,
 // shifted left by 6 bytes, which is enough for 8tb of memory.
 // We waste 6-3 = 3 bytes to save on 6 runtime gas (PUSH1 0x224 SHL).
 mstore(0x00, 0xc6171134001122334455)
 // Store the `address(this)`.
 mstore(0x1a, address())
 // Store the `operator`.
 mstore(0x3a, operator)

 // `isOperatorAllowed` always returns true if it does not revert.
 if iszero(staticcall(gas(), _OPERATOR_FILTER_REGISTRY, 0x16, 0x44, 0x00, 0x00)) {
 // Bubble up the revert if the staticcall reverts.
 returndatacopy(0x00, 0x00, returndatasize())
 revert(0x00, returndatasize())
 }

 // We'll skip checking if `from` is inside the blacklist.
 // Even though that can block transferring out of wrapper contracts,
 // we don't want tokens to be stuck.

 // Restore the part of the free memory pointer that was overwritten,
 // which is guaranteed to be zero, if less than 8tb of memory is used.
 mstore(0x3a, 0)
 }
 }

 /// @dev For deriving contracts to override, so that operator filtering
 /// can be turned on / off.
 /// Returns true by default.
 function _operatorFilteringEnabled() internal view virtual returns (bool) {
 return true;
 }

 /// @dev For deriving contracts to override, so that preferred marketplaces can
 /// skip operator filtering, helping users save gas.
 /// Returns false for all inputs by default.
 function _isPriorityOperator(address) internal view virtual returns (bool) {
 return false;
 }
}
// File: contracts/IERC721A.sol



// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs

pragma solidity ^0.8.4;

/**
 * @dev Interface of ERC721A.
 */
interface IERC721A {
 /**
 * The caller must own the token or be an approved operator.
 */
 error ApprovalCallerNotOwnerNorApproved();

 /**
 * The token does not exist.
 */
 error ApprovalQueryForNonexistentToken();

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

 /**
 * Cannot mint to the zero address.
 */
 error MintToZeroAddress();

 /**
 * The quantity of tokens minted must be more than zero.
 */
 error MintZeroQuantity();

 /**
 * The token does not exist.
 */
 error OwnerQueryForNonexistentToken();

 /**
 * The caller must own the token or be an approved operator.
 */
 error TransferCallerNotOwnerNorApproved();

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

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

 /**
 * Cannot transfer to the zero address.
 */
 error TransferToZeroAddress();

 /**
 * The token does not exist.
 */
 error URIQueryForNonexistentToken();

 /**
 * The `quantity` minted with ERC2309 exceeds the safety limit.
 */
 error MintERC2309QuantityExceedsLimit();

 /**
 * The `extraData` cannot be set on an unintialized ownership slot.
 */
 error OwnershipNotInitializedForExtraData();

 // =============================================================
 // STRUCTS
 // =============================================================

 struct TokenOwnership {
 // The address of the owner.
 address addr;
 // Stores the start time of ownership with minimal overhead for tokenomics.
 uint64 startTimestamp;
 // Whether the token has been burned.
 bool burned;
 // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.
 uint24 extraData;
 }

 // =============================================================
 // TOKEN COUNTERS
 // =============================================================

 /**
 * @dev Returns the total number of tokens in existence.
 * Burned tokens will reduce the count.
 * To get the total number of tokens minted, please see {_totalMinted}.
 */
 function totalSupply() external view returns (uint256);

 // =============================================================
 // IERC165
 // =============================================================

 /**
 * @dev Returns true if this contract implements the interface defined by
 * `interfaceId`. See the corresponding
 * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
 * to learn more about how these ids are created.
 *
 * This function call must use less than 30000 gas.
 */
 function supportsInterface(bytes4 interfaceId) external view returns (bool);

 // =============================================================
 // IERC721
 // =============================================================

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

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

 /**
 * @dev Emitted when `owner` enables or disables
 * (`approved`) `operator` to manage all of its assets.
 */
 event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

 /**
 * @dev Returns the number of tokens in `owner`'s account.
 */
 function balanceOf(address owner) external view returns (uint256 balance);

 /**
 * @dev Returns the owner of the `tokenId` token.
 *
 * Requirements:
 *
 * - `tokenId` must exist.
 */
 function ownerOf(uint256 tokenId) external view returns (address owner);

 /**
 * @dev Safely transfers `tokenId` token from `from` to `to`,
 * checking first that contract recipients are aware of the ERC721 protocol
 * to prevent tokens from being forever locked.
 *
 * Requirements:
 *
 * - `from` cannot be the zero address.
 * - `to` cannot be the zero address.
 * - `tokenId` token must exist and be owned by `from`.
 * - If the caller is not `from`, it must be have been allowed to move
 * this token by either {approve} or {setApprovalForAll}.
 * - If `to` refers to a smart contract, it must implement
 * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
 *
 * Emits a {Transfer} event.
 */
 function safeTransferFrom(
 address from,
 address to,
 uint256 tokenId,
 bytes calldata data
 ) external payable;

 /**
 * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
 */
 function safeTransferFrom(
 address from,
 address to,
 uint256 tokenId
 ) external payable;

 /**
 * @dev Transfers `tokenId` from `from` to `to`.
 *
 * WARNING: Usage of this method is discouraged, use {safeTransferFrom}
 * whenever possible.
 *
 * Requirements:
 *
 * - `from` cannot be the zero address.
 * - `to` cannot be the zero address.
 * - `tokenId` token must be owned by `from`.
 * - If the caller is not `from`, it must be approved to move this token
 * by either {approve} or {setApprovalForAll}.
 *
 * Emits a {Transfer} event.
 */
 function transferFrom(
 address from,
 address to,
 uint256 tokenId
 ) external payable;

 /**
 * @dev Gives permission to `to` to transfer `tokenId` token to another account.
 * The approval is cleared when the token is transferred.
 *
 * Only a single account can be approved at a time, so approving the
 * zero address clears previous approvals.
 *
 * Requirements:
 *
 * - The caller must own the token or be an approved operator.
 * - `tokenId` must exist.
 *
 * Emits an {Approval} event.
 */
 function approve(address to, uint256 tokenId) external payable;

 /**
 * @dev Approve or remove `operator` as an operator for the caller.
 * Operators can call {transferFrom} or {safeTransferFrom}
 * for any token owned by the caller.
 *
 * Requirements:
 *
 * - The `operator` cannot be the caller.
 *
 * Emits an {ApprovalForAll} event.
 */
 function setApprovalForAll(address operator, bool _approved) external;

 /**
 * @dev Returns the account approved for `tokenId` token.
 *
 * Requirements:
 *
 * - `tokenId` must exist.
 */
 function getApproved(uint256 tokenId) external view returns (address operator);

 /**
 * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
 *
 * See {setApprovalForAll}.
 */
 function isApprovedForAll(address owner, address operator) external view returns (bool);

 // =============================================================
 // IERC721Metadata
 // =============================================================

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

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

 /**
 * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
 */
 function tokenURI(uint256 tokenId) external view returns (string memory);

 // =============================================================
 // IERC2309
 // =============================================================

 /**
 * @dev Emitted when tokens in `fromTokenId` to `toTokenId`
  * (inclusive) is transferred from `from` to `to`, as defined in the
 * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.
 *
 * See {_mintERC2309} for more details.
 */
 event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}
// File: contracts/NFTToken.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;

import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/common/ERC2981.sol";

/**
 * @dev include SUPPORT_ROLE access control
 */
contract NFTAccessControl is AccessControl {
 bytes32 public constant SUPPORT_ROLE = keccak256("SUPPORT");
}

/**
 * @dev collect common elements for multiple contracts.
 * Includes SUPPORT_ROLE access control and ERC2981 on chain royalty info.
 */
contract NFTToken is NFTAccessControl, Ownable, ERC2981 {
 constructor() {
 // set up roles
 _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
 _grantRole(SUPPORT_ROLE, msg.sender);
 }

 /***************************************************************************
 * Royalties
 */

 /**
 * @dev See {ERC2981-_setDefaultRoyalty}.
 */
 function setDefaultRoyalty(address receiver, uint96 feeNumerator)
 external
 onlyRole(SUPPORT_ROLE)
 {
 _setDefaultRoyalty(receiver, feeNumerator);
 }

 /**
 * @dev See {ERC2981-_deleteDefaultRoyalty}.
 */
 function deleteDefaultRoyalty() external onlyRole(SUPPORT_ROLE) {
 _deleteDefaultRoyalty();
 }

 /**
 * @dev See {ERC2981-_setTokenRoyalty}.
 */
 function setTokenRoyalty(
 uint256 tokenId,
 address receiver,
 uint96 feeNumerator
 ) external onlyRole(SUPPORT_ROLE) {
 _setTokenRoyalty(tokenId, receiver, feeNumerator);
 }

 /**
 * @dev See {ERC2981-_resetTokenRoyalty}.
 */
 function resetTokenRoyalty(uint256 tokenId)
 external
 onlyRole(SUPPORT_ROLE)
 {
 _resetTokenRoyalty(tokenId);
 }

 /***************************************************************************
 * Overrides
 */

 /**
 * @dev See {IERC165-supportsInterface}.
 */
 function supportsInterface(bytes4 interfaceId)
 public
 view
 virtual
 override(AccessControl, ERC2981)
 returns (bool)
 {
 return super.supportsInterface(interfaceId);
 }
}