Contract

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

• interface IERC165
•    - function supportsInterface(bytes4 int ...
• interface IERC721 is IERC165
•    - function balanceOf(address owner)
•    - function ownerOf(uint256 tokenId)
•    - function safeTransferFrom(
•    - function transferFrom(
•    - function approve(address to, uint256 ...
•    - function getApproved(uint256 tokenId)
•    - function setApprovalForAll(address op ...
•    - function isApprovedForAll(address own ...
•    - function safeTransferFrom(
• interface IERC721Receiver
•    - function onERC721Received(
• interface IERC721Metadata is IERC721
•    - function name()
•    - function symbol()
•    - function tokenURI(uint256 tokenId)
• interface IERC721Enumerable is IERC72 ...
•    - function totalSupply()
•    - function tokenOfOwnerByIndex(address ...
•    - function tokenByIndex(uint256 index)
• library Address
•    - function isContract(address account)
•    - function sendValue(address payable re ...
•    - function functionCall(address target, ...
•    - function functionCall(
•    - function functionCallWithValue(
•    - function functionCallWithValue(
•    - function functionStaticCall(address t ...
•    - function functionStaticCall(
•    - function functionDelegateCall(address ...
•    - function functionDelegateCall(
•    - function verifyCallResult(
•    - function _msgSender()
•    - function _msgData()
• library Strings
•    - function toString(uint256 value)
•    - function toHexString(uint256 value)
•    - function toHexString(uint256 value, u ...
•    - function supportsInterface(bytes4 int ...
•  contract ERC721A is
•    - function totalSupply()
•    - function tokenByIndex(uint256 index)
•    - function tokenOfOwnerByIndex(address ...
•    - function supportsInterface(bytes4 int ...
•    - function balanceOf(address owner)
•    - function _numberMinted(address owner)
•    - function ownershipOf(uint256 tokenId)
•    - function ownerOf(uint256 tokenId)
•    - function name()
•    - function symbol()
•    - function tokenURI(uint256 tokenId)
•    - function _baseURI()
•    - function approve(address to, uint256 ...
•    - function getApproved(uint256 tokenId)
•    - function setApprovalForAll(address op ...
•    - function isApprovedForAll(address own ...
•    - function transferFrom(
•    - function safeTransferFrom(
•    - function safeTransferFrom(
•    - function _exists(uint256 tokenId)
•    - function _safeMint(address to, uint25 ...
•    - function _safeMint(
•    - function _mint(
•    - function _transfer(
•    - function _approve(
•    - function _checkOnERC721Received(
•    - function _beforeTokenTransfers(
•    - function _afterTokenTransfers(
•    - function owner()
•    - function renounceOwnership()
•    - function transferOwnership(address ne ...
•    - function _transferOwnership(address n ...
• library MerkleProof
•    - function verify(
•    - function processProof(bytes32[] memor ...
•    - function _efficientHash(bytes32 a, by ...
•  contract HotDougs is Ownable, Reen ...
•    - function mintFree(uint256 numberOfTok ...
•    - function mintPreDoug(uint256 numberOf ...
•    - function mintDoug(uint256 numberOfTok ...
•    - function ownerMint(uint256 numberOfTo ...
•    - function tokenURI(uint256 tokenId)
•    - function setBaseURI(
•    - function setUnrevealedURI(string memo ...
•    - function setSaleState(uint256 newSale ...
•    - function setFreeMintRoot(bytes32 newM ...
•    - function setPreMintRoot(bytes32 newMe ...
•    - function setMaxDougs(uint256 _supply)
•    - function toggleMarketplacesApproved()
•    - function withdrawMoney()
•    - function isApprovedForAll(address own ...
•  contract OwnableDelegateProxy }
•  contract ProxyRegistry
• interface ERC721TokenReceiver
•    - function onERC721Received(
•  contract HotDougsMinter is Ownable ... *
•    - function setNewDougPrice(uint256 newD ...
•    - function dougTotalSupply()
•    - function setDougContractAddress(addre ...
•    - function _getTokenIds(address _owner)
•    - function getFreeDougArray(address _ad ...
•    - function checkForFreeDougs(address _a ...
•    - function _mintAndTransferDoug(uint256 ...
•    - function manualTransferContractOwnedD ...
•    - function onERC721Received(
•    - function setHotDougSaleState(uint256 ...
•    - function setHotDougBaseURI(
•    - function setHotDougMaxDougs(uint256 n ...
•    - function setHotDougMinterMaxDougs(uin ...
•    - function setSaleState(uint256 newSale ...
•    - function setLastFreeHotDougTokenId(ui ...
•    - function withdrawToMinterContract()
•    - function withdrawToOwner()
•    - function mintDougs(uint256 numberToMi ...
•    - function sendFreeDougs(uint256[] memo ...
•    - function ownerMint(uint256 numberOfTo ...
•    - function transferHotDougOwnership(add ...
•    - function getBalance()

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2022-04-02
*/

// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;

// Creator: Chiru Labs



// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)



// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)



/**
 * @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);
}

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @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
    ) external;

    /**
     * @dev Transfers `tokenId` token 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;

    /**
     * @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;

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

    /**
     * @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 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);

    /**
     * @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 calldata data
    ) external;
}
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)



/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)





/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @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);
}
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)





/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)



/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)



/**
 * @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;
    }
}
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)



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

    /**
     * @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);
    }
}
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.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;
    }
}

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
 *
 * Does not support burning tokens to address(0).
 *
 * Assumes that an owner cannot have more than the 2**128 - 1 (max value of uint128) of supply
 */
contract ERC721A is
    Context,
    ERC165,
    IERC721,
    IERC721Metadata,
    IERC721Enumerable
{
    using Address for address;
    using Strings for uint256;

    struct TokenOwnership {
        address addr;
        uint64 startTimestamp;
    }

    struct AddressData {
        uint128 balance;
        uint128 numberMinted;
    }

    uint256 internal currentIndex;

    // 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 ownershipOf implementation for details.
    mapping(uint256 => TokenOwnership) internal _ownerships;

    // Mapping owner address to address data
    mapping(address => AddressData) private _addressData;

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

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

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

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view override returns (uint256) {
        return currentIndex;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index)
        public
        view
        override
        returns (uint256)
    {
        require(index < totalSupply(), "ERC721A: global index out of bounds");
        return index;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     * This read function is O(totalSupply). If calling from a separate contract, be sure to test gas first.
     * It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index)
        public
        view
        override
        returns (uint256)
    {
        require(index < balanceOf(owner), "ERC721A: owner index out of bounds");
        uint256 numMintedSoFar = totalSupply();
        uint256 tokenIdsIdx;
        address currOwnershipAddr;

        // Counter overflow is impossible as the loop breaks when uint256 i is equal to another uint256 numMintedSoFar.
        unchecked {
            for (uint256 i; i < numMintedSoFar; i++) {
                TokenOwnership memory ownership = _ownerships[i];
                if (ownership.addr != address(0)) {
                    currOwnershipAddr = ownership.addr;
                }
                if (currOwnershipAddr == owner) {
                    if (tokenIdsIdx == index) {
                        return i;
                    }
                    tokenIdsIdx++;
                }
            }
        }

        revert("ERC721A: unable to get token of owner by index");
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(ERC165, IERC165)
        returns (bool)
    {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            interfaceId == type(IERC721Enumerable).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) {
        require(
            owner != address(0),
            "ERC721A: balance query for the zero address"
        );
        return uint256(_addressData[owner].balance);
    }

    function _numberMinted(address owner) internal view returns (uint256) {
        require(
            owner != address(0),
            "ERC721A: number minted query for the zero address"
        );
        return uint256(_addressData[owner].numberMinted);
    }

    /**
     * Gas spent here starts off proportional to the maximum mint batch size.
     * It gradually moves to O(1) as tokens get transferred around in the collection over time.
     */
    function ownershipOf(uint256 tokenId)
        internal
        view
        returns (TokenOwnership memory)
    {
        require(_exists(tokenId), "ERC721A: owner query for nonexistent token");

        unchecked {
            for (uint256 curr = tokenId; curr >= 0; curr--) {
                TokenOwnership memory ownership = _ownerships[curr];
                if (ownership.addr != address(0)) {
                    return ownership;
                }
            }
        }

        revert("ERC721A: unable to determine the owner of token");
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view override returns (address) {
        return ownershipOf(tokenId).addr;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId)
        public
        view
        virtual
        override
        returns (string memory)
    {
        require(
            _exists(tokenId),
            "ERC721Metadata: URI query for nonexistent token"
        );

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

    /**
     * @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, can be overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override {
        address owner = ERC721A.ownerOf(tokenId);
        require(to != owner, "ERC721A: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721A: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId, owner);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId)
        public
        view
        override
        returns (address)
    {
        require(
            _exists(tokenId),
            "ERC721A: approved query for nonexistent token"
        );

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved)
        public
        override
    {
        require(operator != _msgSender(), "ERC721A: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator)
        public
        view
        virtual
        override
        returns (bool)
    {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public override {
        _transfer(from, to, tokenId);
        require(
            _checkOnERC721Received(from, to, tokenId, _data),
            "ERC721A: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @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 (`_mint`),
     */
    function _exists(uint256 tokenId) internal view returns (bool) {
        return tokenId < currentIndex;
    }

    function _safeMint(address to, uint256 quantity) internal {
        _safeMint(to, 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.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(
        address to,
        uint256 quantity,
        bytes memory _data
    ) internal {
        _mint(to, quantity, _data, true);
    }

    /**
     * @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.
     */
    function _mint(
        address to,
        uint256 quantity,
        bytes memory _data,
        bool safe
    ) internal {
        uint256 startTokenId = currentIndex;
        require(to != address(0), "ERC721A: mint to the zero address");
        require(quantity != 0, "ERC721A: quantity must be greater than 0");

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

        // Overflows are incredibly unrealistic.
        // balance or numberMinted overflow if current value of either + quantity > 3.4e38 (2**128) - 1
        // updatedIndex overflows if currentIndex + quantity > 1.56e77 (2**256) - 1
        unchecked {
            _addressData[to].balance += uint128(quantity);
            _addressData[to].numberMinted += uint128(quantity);

            _ownerships[startTokenId].addr = to;
            _ownerships[startTokenId].startTimestamp = uint64(block.timestamp);

            uint256 updatedIndex = startTokenId;

            for (uint256 i; i < quantity; i++) {
                emit Transfer(address(0), to, updatedIndex);
                if (safe) {
                    require(
                        _checkOnERC721Received(
                            address(0),
                            to,
                            updatedIndex,
                            _data
                        ),
                        "ERC721A: transfer to non ERC721Receiver implementer"
                    );
                }

                updatedIndex++;
            }

            currentIndex = updatedIndex;
        }

        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) private {
        TokenOwnership memory prevOwnership = ownershipOf(tokenId);

        bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
            getApproved(tokenId) == _msgSender() ||
            isApprovedForAll(prevOwnership.addr, _msgSender()));

        require(
            isApprovedOrOwner,
            "ERC721A: transfer caller is not owner nor approved"
        );

        require(
            prevOwnership.addr == from,
            "ERC721A: transfer from incorrect owner"
        );
        require(to != address(0), "ERC721A: transfer to the zero address");

        _beforeTokenTransfers(from, to, tokenId, 1);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId, prevOwnership.addr);

        // 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 {
            _addressData[from].balance -= 1;
            _addressData[to].balance += 1;

            _ownerships[tokenId].addr = to;
            _ownerships[tokenId].startTimestamp = uint64(block.timestamp);

            // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
            // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
            uint256 nextTokenId = tokenId + 1;
            if (_ownerships[nextTokenId].addr == address(0)) {
                if (_exists(nextTokenId)) {
                    _ownerships[nextTokenId].addr = prevOwnership.addr;
                    _ownerships[nextTokenId].startTimestamp = prevOwnership
                        .startTimestamp;
                }
            }
        }

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

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(
        address to,
        uint256 tokenId,
        address owner
    ) private {
        _tokenApprovals[tokenId] = to;
        emit Approval(owner, to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try
                IERC721Receiver(to).onERC721Received(
                    _msgSender(),
                    from,
                    tokenId,
                    _data
                )
            returns (bytes4 retval) {
                return retval == IERC721Receiver(to).onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert(
                        "ERC721A: transfer to non ERC721Receiver implementer"
                    );
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
     *
     * 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`.
     */
    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.
     *
     * 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` and `to` are never both zero.
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}
}

// OpenZeppelin Contracts v4.4.1 (access/Ownable.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 Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        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);
    }
}
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)



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

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol)



/**
 * @dev These functions deal with verification of Merkle Trees proofs.
 *
 * The proofs can be generated using the JavaScript library
 * https://github.com/miguelmota/merkletreejs[merkletreejs].
 * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
 *
 * See `test/utils/cryptography/MerkleProof.test.js` for some examples.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];
            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = _efficientHash(computedHash, proofElement);
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = _efficientHash(proofElement, computedHash);
            }
        }
        return computedHash;
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

/// @title Hot Dougs
contract HotDougs is Ownable, ReentrancyGuard, ERC721A("Hot Dougs", "DOUGS") {
    using Strings for uint256;
    using MerkleProof for bytes32[];

    /// @notice Max total supply.
    uint256 public dougsMax = 6969;

    /// @notice Max transaction amount.
    uint256 public constant dougsPerTx = 10;

    /// @notice Max Dougs per wallet in pre-sale
    uint256 public constant dougsMintPerWalletPresale = 3;

    /// @notice Total Dougs available in pre-sale
    uint256 public constant maxPreSaleDougs = 3000;

    /// @notice Dougs price.
    uint256 public constant dougsPrice = 0.05 ether;

    /// @notice 0 = closed, 1 = pre-sale, 2 = public
    uint256 public saleState;

    /// @notice Metadata baseURI.
    string public baseURI;

    /// @notice Metadata unrevealed uri.
    string public unrevealedURI;

    /// @notice Metadata baseURI extension.
    string public baseExtension;

    /// @notice OpenSea proxy registry.
    address public opensea = 0xa5409ec958C83C3f309868babACA7c86DCB077c1;

    /// @notice LooksRare marketplace transfer manager.
    address public looksrare = 0xf42aa99F011A1fA7CDA90E5E98b277E306BcA83e;

    /// @notice Check if marketplaces pre-approve is enabled.
    bool public marketplacesApproved = true;

    /// @notice Free mint merkle root.
    bytes32 public freeMintRoot;

    /// @notice Pre-sale merkle root.
    bytes32 public preMintRoot;

    /// @notice Amount minted by address on free mint.
    mapping(address => uint256) public freeMintCount;

    /// @notice Amount minted by address on pre access.
    mapping(address => uint256) public preMintCount;

    /// @notice Authorized callers mapping.
    mapping(address => bool) public auth;

    modifier canMintDougs(uint256 numberOfTokens) {
        require(
            totalSupply() + numberOfTokens <= dougsMax,
            "Not enough Dougs remaining to mint"
        );
        _;
    }

    modifier preSaleActive() {
        require(saleState == 1, "Pre sale is not open");
        _;
    }

    modifier publicSaleActive() {
        require(saleState == 2, "Public sale is not open");
        _;
    }

    modifier isValidMerkleProof(bytes32[] calldata merkleProof, bytes32 root) {
        require(
            MerkleProof.verify(
                merkleProof,
                root,
                keccak256(abi.encodePacked(msg.sender))
            ),
            "Address does not exist in list"
        );
        _;
    }

    modifier isCorrectPayment(uint256 price, uint256 numberOfTokens) {
        require(
            price * numberOfTokens == msg.value,
            "Incorrect ETH value sent"
        );
        _;
    }

    modifier maxDougsPerTransaction(uint256 numberOfTokens) {
        require(
            numberOfTokens <= dougsPerTx,
            "Max Dougs to mint per transaction is 10"
        );
        _;
    }

    constructor(string memory newUnrevealedURI) {
        unrevealedURI = newUnrevealedURI;
    }

    /// @notice Mint one free token and up to 3 pre-sale tokens.
    function mintFree(uint256 numberOfTokens, bytes32[] calldata merkleProof)
        external
        payable
        nonReentrant
        preSaleActive
        isCorrectPayment(dougsPrice, numberOfTokens - 1)
        isValidMerkleProof(merkleProof, freeMintRoot)
    {
        if (msg.sender != owner()) {
            require(
                freeMintCount[msg.sender] == 0,
                "User already minted a free token"
            );
            uint256 numAlreadyMinted = preMintCount[msg.sender];

            require(
                numAlreadyMinted + numberOfTokens - 1 <=
                    dougsMintPerWalletPresale,
                "Max Dougs to mint in pre-sale is three"
            );

            require(
                totalSupply() + numberOfTokens <= maxPreSaleDougs,
                "Not enough Dougs remaining in pre-sale"
            );

            preMintCount[msg.sender] = numAlreadyMinted + numberOfTokens;

            freeMintCount[msg.sender]++;
        }
        _safeMint(msg.sender, numberOfTokens);
    }

    /// @notice Mint one or more tokens for address on pre-sale list.
    function mintPreDoug(uint256 numberOfTokens, bytes32[] calldata merkleProof)
        external
        payable
        nonReentrant
        preSaleActive
        isCorrectPayment(dougsPrice, numberOfTokens)
        isValidMerkleProof(merkleProof, preMintRoot)
    {
        uint256 numAlreadyMinted = preMintCount[msg.sender];

        require(
            numAlreadyMinted + numberOfTokens <= dougsMintPerWalletPresale,
            "Max Dougs to mint in pre-sale is three"
        );

        require(
            totalSupply() + numberOfTokens <= maxPreSaleDougs,
            "Not enough Dougs remaining in pre-sale"
        );

        preMintCount[msg.sender] += numberOfTokens;

        _safeMint(msg.sender, numberOfTokens);
    }

    /// @notice Mint one or more tokens.
    function mintDoug(uint256 numberOfTokens)
        external
        payable
        nonReentrant
        publicSaleActive
        isCorrectPayment(dougsPrice, numberOfTokens)
        canMintDougs(numberOfTokens)
        maxDougsPerTransaction(numberOfTokens)
    {
        _safeMint(msg.sender, numberOfTokens);
    }

    /// @notice Allow contract owner to mint tokens.
    function ownerMint(uint256 numberOfTokens)
        external
        onlyOwner
        canMintDougs(numberOfTokens)
    {
        _safeMint(msg.sender, numberOfTokens);
    }

    /// @notice See {IERC721-tokenURI}.
    function tokenURI(uint256 tokenId)
        public
        view
        override
        returns (string memory)
    {
        require(
            _exists(tokenId),
            "ERC721Metadata: URI query for nonexistent token"
        );
        if (bytes(unrevealedURI).length > 0) return unrevealedURI;
        return
            string(
                abi.encodePacked(baseURI, tokenId.toString(), baseExtension)
            );
    }

    /// @notice Set baseURI to `newBaseURI`, baseExtension to `newBaseExtension` and deletes unrevealedURI, triggering a reveal.
    function setBaseURI(
        string memory newBaseURI,
        string memory newBaseExtension
    ) external onlyOwner {
        baseURI = newBaseURI;
        baseExtension = newBaseExtension;
        delete unrevealedURI;
    }

    /// @notice Set unrevealedURI to `newUnrevealedURI`.
    function setUnrevealedURI(string memory newUnrevealedURI)
        external
        onlyOwner
    {
        unrevealedURI = newUnrevealedURI;
    }

    /// @notice Set sale state. 0 = closed 1 = pre-sale 2 = public.
    function setSaleState(uint256 newSaleState) external onlyOwner {
        saleState = newSaleState;
    }

    /// @notice Set freeMintRoot to `newMerkleRoot`.
    function setFreeMintRoot(bytes32 newMerkleRoot) external onlyOwner {
        freeMintRoot = newMerkleRoot;
    }

    /// @notice Set preMintRoot to `newMerkleRoot`.
    function setPreMintRoot(bytes32 newMerkleRoot) external onlyOwner {
        preMintRoot = newMerkleRoot;
    }

    /// @notice Update Total Supply
    function setMaxDougs(uint256 _supply) external onlyOwner {
        dougsMax = _supply;
    }

    /// @notice Toggle marketplaces pre-approve feature.
    function toggleMarketplacesApproved() external onlyOwner {
        marketplacesApproved = !marketplacesApproved;
    }

    /// @notice Withdraw balance to Owner
    function withdrawMoney() external onlyOwner nonReentrant {
        (bool success, ) = msg.sender.call{value: address(this).balance}("");
        require(success, "Transfer failed.");
    }

    /// @notice See {ERC721-isApprovedForAll}.
    function isApprovedForAll(address owner, address operator)
        public
        view
        override
        returns (bool)
    {
        if (!marketplacesApproved)
            return auth[operator] || super.isApprovedForAll(owner, operator);
        return
            auth[operator] ||
            operator == address(ProxyRegistry(opensea).proxies(owner)) ||
            operator == looksrare ||
            super.isApprovedForAll(owner, operator);
    }
}

contract OwnableDelegateProxy {}

contract ProxyRegistry {
    mapping(address => OwnableDelegateProxy) public proxies;
}
/**
 * @dev ERC-721 interface for accepting safe transfers.
 * See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md.
 */
interface ERC721TokenReceiver {
    /**
     * @notice The contract address is always the message sender. A wallet/broker/auction application
     * MUST implement the wallet interface if it will accept safe transfers.
     * @dev Handle the receipt of a NFT. The ERC721 smart contract calls this function on the
     * recipient after a `transfer`. This function MAY throw to revert and reject the transfer. Return
     * of other than the magic value MUST result in the transaction being reverted.
     * Returns `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` unless throwing.
     * @param _operator The address which called `safeTransferFrom` function.
     * @param _from The address which previously owned the token.
     * @param _tokenId The NFT identifier which is being transferred.
     * @param _data Additional data with no specified format.
     * @return Returns `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`.
     */
    function onERC721Received(
        address _operator,
        address _from,
        uint256 _tokenId,
        bytes calldata _data
    ) external returns (bytes4);
}



contract HotDougsMinter is Ownable, ReentrancyGuard, ERC721TokenReceiver {
    event Received();

    // mapping from dougTokenId to claim status. 0 = available, 1 = claimed
    mapping(uint256 => uint256) public claimedDougs;

    /// @notice Max Dougs per transaction
    uint256 public constant paidDougsPerTx = 10;

    /// @notice price of Hot Dougs minted through Minter contract
    uint256 public hotDougPrice = .025 ether;

    /// @notice original HotDougs Contract Address
    address public dougContractAddress;

    /// @notice 0 = closed, 1 = pre-sale, 2 = public
    uint256 public saleState;

    /// @notice Update newDougPrice
    function setNewDougPrice(uint256 newDougPrice) external onlyOwner {
        hotDougPrice = newDougPrice;
    }

    /// @notice Max total supply.
    uint256 public maxHotDougs = 6969;

    /// @notice only allow free dougs until a specified tokenId
    uint256 public lastFreeHotDougTokenId;

    modifier maxDougsPerTransaction(uint256 numberOfTokens) {
        require(
            numberOfTokens <= paidDougsPerTx,
            "Max Dougs per transaction is 10"
        );
        _;
    }

    modifier publicSaleActive() {
        require(saleState == 2, "Public sale is not open");
        _;
    }

    modifier canMintDougs(uint256 numberOfTokens) {
        require(
            dougTotalSupply() + numberOfTokens <= maxHotDougs,
            "Not enough Dougs left"
        );
        _;
    }

    modifier isCorrectPayment(uint256 price, uint256 numberOfTokens) {
        require(
            price * numberOfTokens == msg.value,
            "Incorrect ETH value sent"
        );
        _;
    }

    function dougTotalSupply() public view returns (uint256) {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        return _hotDougs.totalSupply();
    }

    function setDougContractAddress(address originalHotDougAddress)
        external
        onlyOwner
    {
        dougContractAddress = originalHotDougAddress;
    }

    /// ----- Mint Doug Utils -----

    /// @notice gets TokenIds for Dougs an address owns
    function _getTokenIds(address _owner)
        internal
        view
        returns (uint256[] memory)
    {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        uint256 tokenBalance = _hotDougs.balanceOf(_owner);

        require(tokenBalance > 1, "No Tokens! per _getTokenIds");
        uint256[] memory _tokensOfOwner = new uint256[](tokenBalance);

        for (uint256 i = 0; i < tokenBalance; i++) {
            _tokensOfOwner[i] = _hotDougs.tokenOfOwnerByIndex(_owner, i);
        }
        return (_tokensOfOwner);
    }

    /// @notice Get the free dougs eligible by an address
    function getFreeDougArray(address _address)
        external
        view
        returns (uint256[] memory)
    {
        uint256[] memory addressTokenIds = _getTokenIds(_address);
        uint256 length = addressTokenIds.length;

        uint256[] memory claimableDougs = new uint256[](length);
        uint256 j = 0;
        for (uint256 i = 0; i < length; i++) {
            // check if the token is claimable for a free Doug
            if (
                claimedDougs[addressTokenIds[i]] == 0 &&
                addressTokenIds[i] <= lastFreeHotDougTokenId
            ) {
                // if it is claimable add to the claimable array
                claimableDougs[j] = addressTokenIds[i];
                j++;
            } else {
                // remove ineligible Dougs from the claimable array
                assembly {
                    mstore(claimableDougs, sub(mload(claimableDougs), 1))
                }
            }
        }
        return claimableDougs;
    }

    /// @notice check if an address has any Dougs that are claim eligible
    function checkForFreeDougs(address _address) public view returns (bool) {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        uint256 tokenBalance = _hotDougs.balanceOf(_address);

        bool claimableDougs;

        if (tokenBalance < 1) {
            claimableDougs = false;
        } else {
            uint256[] memory addressTokenIds = _getTokenIds(_address);
            uint256 length = addressTokenIds.length;
            for (uint256 i = 0; i < length; i++) {
                // check if the token is claimable for a free Doug
                if (
                    claimedDougs[addressTokenIds[i]] == 0 &&
                    addressTokenIds[i] <= lastFreeHotDougTokenId
                ) {
                    // if it is claimable return true if not, keep going to see if any are claimable.
                    claimableDougs = true;
                    // leave the loop if any tokens are claimable
                    break;
                } else {
                    claimableDougs = false;
                }
            }
        }
        return claimableDougs;
    }

    function _mintAndTransferDoug(uint256 _numberOfTokens)
        internal
        canMintDougs(_numberOfTokens)
    {
        HotDougs _hotDougs = HotDougs(dougContractAddress);

        // get the current number of minted Dougs
        uint256 currentTotal = _hotDougs.totalSupply();

        // mint the token(s) to this contract
        _hotDougs.ownerMint(_numberOfTokens);

        // transfer the newly minted Dougs to the minter
        for (
            uint256 i = currentTotal;
            i <= _numberOfTokens + currentTotal - 1;
            i++
        ) {
            _hotDougs.transferFrom(address(this), tx.origin, i);
        }
    }

    /// @notice only used in case a token gets "stuck" in the minting contract
    function manualTransferContractOwnedDoug(address _to, uint256 _tokenId)
        external
        onlyOwner
    {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        _hotDougs.transferFrom(address(this), _to, _tokenId);
    }

    function onERC721Received(
        address _operator,
        address _from,
        uint256 _tokenId,
        bytes calldata _data
    ) external override returns (bytes4) {
        _operator;
        _from;
        _tokenId;
        _data;
        emit Received();
        return 0x150b7a02;
    }

    /// @notice Set original Hot Doug contract sale state
    function setHotDougSaleState(uint256 newSaleState) external onlyOwner {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        _hotDougs.setSaleState(newSaleState);
    }

    /// @notice Set original Hot Doug BaseURI
    function setHotDougBaseURI(
        string memory newBaseURI,
        string memory newBaseExtension
    ) external onlyOwner {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        _hotDougs.setBaseURI(newBaseURI, newBaseExtension);
    }

    /// @notice Set max Dougs on original Hot Dougs contract
    function setHotDougMaxDougs(uint256 newMaxDougs) external onlyOwner {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        _hotDougs.setMaxDougs(newMaxDougs);
    }

    /// @notice Set max Dougs on Hot Dougs Minter contract
    function setHotDougMinterMaxDougs(uint256 newMaxDougs) external onlyOwner {
        maxHotDougs = newMaxDougs;
    }

    /// @notice Set sale state. 0 = closed 1 = pre-sale 2 = public.
    function setSaleState(uint256 newSaleState) external onlyOwner {
        saleState = newSaleState;
    }

    /// @notice allow the owner to update the maximum tokenId redeemable for a free Doug
    function setLastFreeHotDougTokenId(uint256 _tokenId) external onlyOwner {
        lastFreeHotDougTokenId = _tokenId;
    }

    /// --- Money Moves ---

    /// @notice moves money from original Hot Dougs contract to Minter contract
    function withdrawToMinterContract() external onlyOwner {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        _hotDougs.withdrawMoney();
    }

    /// @notice moves money to owner of this contract
    function withdrawToOwner() external onlyOwner {
        (bool success, ) = payable(owner()).call{value: address(this).balance}(
            ""
        );
        require(success, "TRANSFER_FAILED");
    }

    /// ---- Functions to Mint ----

    /// @notice Mint a Doug
    function mintDougs(uint256 numberToMint)
        external
        payable
        publicSaleActive
        isCorrectPayment(hotDougPrice, numberToMint)
        canMintDougs(numberToMint)
        maxDougsPerTransaction(numberToMint)
        nonReentrant
    {
        _mintAndTransferDoug(numberToMint);
    }

    /// @notice send a free doug per tokenId to the transaction originator
    function sendFreeDougs(uint256[] memory freeDougArray) external {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        require(freeDougArray.length > 0);

        uint256[] memory addressTokenIds = freeDougArray;
        uint256 length = addressTokenIds.length;
        require(
            dougTotalSupply() + length <= maxHotDougs,
            "Not enough Dougs left"
        );

        // only allow claiming of up to 10 free Dougs at a time
        for (uint256 i = 0; i < length && i < 10; i++) {
            if (
                claimedDougs[addressTokenIds[i]] == 0 &&
                addressTokenIds[i] <= lastFreeHotDougTokenId &&
                _hotDougs.ownerOf(addressTokenIds[i]) == tx.origin
            ) {
                // add tokenId to list of claimedDougs
                claimedDougs[addressTokenIds[i]] = 1;
                // mint Doug and transfer to the tx.origin
                _mintAndTransferDoug(1);
            }
        }
    }

    /// @notice allow the owner of this contract to mint
    function ownerMint(uint256 numberOfTokens)
        external
        onlyOwner
        canMintDougs(numberOfTokens)
    {
        _mintAndTransferDoug(numberOfTokens);
    }

    /// @notice Transfer the original Hot Doug contract ownership
    function transferHotDougOwnership(address newOwner) external onlyOwner {
        HotDougs _hotDougs = HotDougs(dougContractAddress);
        _hotDougs.transferOwnership(newOwner);
    }

    /// ###### USED WITH DEBUGGING #######
    function getBalance() public view returns (uint256) {
        return address(this).balance;
    }

    receive() external payable {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[],"name":"Received","type":"event"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"checkForFreeDougs","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"claimedDougs","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"dougContractAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"dougTotalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"getFreeDougArray","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"hotDougPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastFreeHotDougTokenId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"manualTransferContractOwnedDoug","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"maxHotDougs","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"numberToMint","type":"uint256"}],"name":"mintDougs","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_operator","type":"address"},{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"numberOfTokens","type":"uint256"}],"name":"ownerMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paidDougsPerTx","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"saleState","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"freeDougArray","type":"uint256[]"}],"name":"sendFreeDougs","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"originalHotDougAddress","type":"address"}],"name":"setDougContractAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"newBaseURI","type":"string"},{"internalType":"string","name":"newBaseExtension","type":"string"}],"name":"setHotDougBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newMaxDougs","type":"uint256"}],"name":"setHotDougMaxDougs","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newMaxDougs","type":"uint256"}],"name":"setHotDougMinterMaxDougs","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newSaleState","type":"uint256"}],"name":"setHotDougSaleState","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"setLastFreeHotDougTokenId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newDougPrice","type":"uint256"}],"name":"setNewDougPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newSaleState","type":"uint256"}],"name":"setSaleState","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferHotDougOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawToMinterContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawToOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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