// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.0
/**
███████╗████████╗██╗  ██╗    ██████╗  ██████╗ ██╗███╗   ██╗██╗  ██╗███████╗
██╔════╝╚══██╔══╝██║  ██║    ██╔══██╗██╔═══██╗██║████╗  ██║██║ ██╔╝██╔════╝
█████╗     ██║   ███████║    ██║  ██║██║   ██║██║██╔██╗ ██║█████╔╝ ███████╗
██╔══╝     ██║   ██╔══██║    ██║  ██║██║   ██║██║██║╚██╗██║██╔═██╗ ╚════██║
███████╗   ██║   ██║  ██║    ██████╔╝╚██████╔╝██║██║ ╚████║██║  ██╗███████║
╚══════╝   ╚═╝   ╚═╝  ╚═╝    ╚═════╝  ╚═════╝ ╚═╝╚═╝  ╚═══╝╚═╝  ╚═╝╚══════╝
    __                  __                     ____               __  
   / /_  __  __   _____/ /_  ____  _________  / __/_______  _____/ /_ 
  / __ \/ / / /  / ___/ __ \/ __ \/ ___/ __ \/ /_/ ___/ _ \/ ___/ __ \
 / /_/ / /_/ /  / /__/ / / / /_/ / /__/ /_/ / __/ /  /  __(__  ) / / /
/_.___/\__, /   \___/_/ /_/\____/\___/\____/_/ /_/   \___/____/_/ /_/ 
      /____/                                                                                                                       
 */
pragma solidity ^0.8.0;
/** ________     __                        ____                  __        __                            __ 
   /  _/ __ \   / /__________ _____  _____/ __/__  _____   _____/ /_____ _/ /____  ____ ___  ___  ____  / /_
   / // /_/ /  / __/ ___/ __ `/ __ \/ ___/ /_/ _ \/ ___/  / ___/ __/ __ `/ __/ _ \/ __ `__ \/ _ \/ __ \/ __/
 _/ // ____/  / /_/ /  / /_/ / / / (__  ) __/  __/ /     (__  ) /_/ /_/ / /_/  __/ / / / / /  __/ / / / /_  
/___/_/       \__/_/   \__,_/_/ /_/____/_/  \___/_/     /____/\__/\__,_/\__/\___/_/ /_/ /_/\___/_/ /_/\__/  
  
Choco Fresh LLC hereby irrevocably assigns and otherwise transfers 
the intellectual property rights that which include the likeness of the enclosed 
image attached to the corresponding token, to the warranted NFT Owner.

The enclosed image on the corresponding token is hereby 
the intellectual property of each warranted NFT Owner. The NFT Owner has authorized 
use of the image attached to their token for personal & commercial use.

Choco Fresh LLC retains the “Eth Doinks” copyright & intellectual 
properties including: NIL, & Authors Rights. In addition Choco Fresh LLC 
retains copyright & intellectual properties including: 
NIL, & Authors Rights of the original attributes.                                                                                                      
**/
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

 
    function toString(uint256 value) internal pure returns (string memory) {
       
        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);
    }

    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);
    }

    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);
    }


    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}


pragma solidity ^0.8.1;

library Address {
 
    function isContract(address account) internal view returns (bool) {
    

        return account.code.length > 0;
    }
  
    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");
    }

    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    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");
    }

    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);
    }
   
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    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);
    }

    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    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);
    }

    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
           
            if (returndata.length > 0) {
                
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}



pragma solidity ^0.8.0;

abstract contract ReentrancyGuard {

    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    modifier nonReentrant() {
   
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

     
        _status = _ENTERED;

        _;

        _status = _NOT_ENTERED;
    }
}


pragma solidity ^0.8.0;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}


pragma solidity ^0.8.0;

abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor() {
        _transferOwnership(_msgSender());
    }

    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}


pragma solidity ^0.8.4;

interface IERC721A {
  
    error ApprovalCallerNotOwnerNorApproved();

    error ApprovalQueryForNonexistentToken();

    error ApproveToCaller();

    error BalanceQueryForZeroAddress();

    error MintToZeroAddress();

    error MintZeroQuantity();

    error OwnerQueryForNonexistentToken();

    error TransferCallerNotOwnerNorApproved();

    error TransferFromIncorrectOwner();

    error TransferToNonERC721ReceiverImplementer();

    error TransferToZeroAddress();

    error URIQueryForNonexistentToken();

    error MintERC2309QuantityExceedsLimit();

    error OwnershipNotInitializedForExtraData();

    // =============================================================
    //                            STRUCTS
    // =============================================================

    struct TokenOwnership {
        // The address of the owner.
        address addr;

        uint64 startTimestamp;

        bool burned;

        uint24 extraData;
    }

    // =============================================================
    //                         TOKEN COUNTERS
    // =============================================================

    function totalSupply() external view returns (uint256);

    // =============================================================
    //                            IERC165
    // =============================================================

    function supportsInterface(bytes4 interfaceId) external view returns (bool);

    // =============================================================
    //                            IERC721
    // =============================================================

    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    function balanceOf(address owner) external view returns (uint256 balance);

    function ownerOf(uint256 tokenId) external view returns (address owner);

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    function approve(address to, uint256 tokenId) external;

    function setApprovalForAll(address operator, bool _approved) external;

    function getApproved(uint256 tokenId) external view returns (address operator);

    function isApprovedForAll(address owner, address operator) external view returns (bool);

    // =============================================================
    //                        IERC721Metadata
    // =============================================================

    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function tokenURI(uint256 tokenId) external view returns (string memory);

    // =============================================================
    //                           IERC2309
    // =============================================================

    event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}

// ERC721A Contracts v4.2.0
// Creator: Chiru Labs

pragma solidity ^0.8.4;


interface ERC721A__IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

contract ERC721A is IERC721A {

    struct TokenApprovalRef {
        address value;
    }

    // =============================================================
    //                           CONSTANTS
    // =============================================================

    uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;
    
    uint256 private constant _BITPOS_NUMBER_MINTED = 64;
   
    uint256 private constant _BITPOS_NUMBER_BURNED = 128;
    
    uint256 private constant _BITPOS_AUX = 192;

    uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;
   
    uint256 private constant _BITPOS_START_TIMESTAMP = 160;
 
    uint256 private constant _BITMASK_BURNED = 1 << 224;

    uint256 private constant _BITPOS_NEXT_INITIALIZED = 225;

    uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225;

    uint256 private constant _BITPOS_EXTRA_DATA = 232;

    uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;

    uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;

    uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;

    bytes32 private constant _TRANSFER_EVENT_SIGNATURE =
        0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;

    // =============================================================
    //                            STORAGE
    // =============================================================

    uint256 private _currentIndex;

    uint256 private _burnCounter;

    string private _name;

    string private _symbol;

    mapping(uint256 => uint256) private _packedOwnerships;

    mapping(address => uint256) private _packedAddressData;

    mapping(uint256 => TokenApprovalRef) private _tokenApprovals;

    mapping(address => mapping(address => bool)) private _operatorApprovals;

    // =============================================================
    //                          CONSTRUCTOR
    // =============================================================

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        _currentIndex = _startTokenId();
    }

    // =============================================================
    //                   TOKEN COUNTING OPERATIONS
    // =============================================================

    function _startTokenId() internal view virtual returns (uint256) {
        return 0;
    }

    function _nextTokenId() internal view virtual returns (uint256) {
        return _currentIndex;
    }

    function totalSupply() public view virtual override returns (uint256) {

        unchecked {
            return _currentIndex - _burnCounter - _startTokenId();
        }
    }

    function _totalMinted() internal view virtual returns (uint256) {

        unchecked {
            return _currentIndex - _startTokenId();
        }
    }

    function _totalBurned() internal view virtual returns (uint256) {
        return _burnCounter;
    }

    // =============================================================
    //                    ADDRESS DATA OPERATIONS
    // =============================================================

    function balanceOf(address owner) public view virtual override returns (uint256) {
        if (owner == address(0)) revert BalanceQueryForZeroAddress();
        return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    function _numberMinted(address owner) internal view returns (uint256) {
        return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    function _numberBurned(address owner) internal view returns (uint256) {
        return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    function _getAux(address owner) internal view returns (uint64) {
        return uint64(_packedAddressData[owner] >> _BITPOS_AUX);
    }

    function _setAux(address owner, uint64 aux) internal virtual {
        uint256 packed = _packedAddressData[owner];
        uint256 auxCasted;

        assembly {
            auxCasted := aux
        }
        packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX);
        _packedAddressData[owner] = packed;
    }

    // =============================================================
    //                            IERC165
    // =============================================================

    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {

        return
            interfaceId == 0x01ffc9a7 || 
            interfaceId == 0x80ac58cd || 
            interfaceId == 0x5b5e139f; 
    }

    // =============================================================
    //                        IERC721Metadata
    // =============================================================

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    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))) : '';
    }

    function _baseURI() internal view virtual returns (string memory) {
        return '';
    }

    // =============================================================
    //                     OWNERSHIPS OPERATIONS
    // =============================================================

    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        return address(uint160(_packedOwnershipOf(tokenId)));
    }

    function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnershipOf(tokenId));
    }

    function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnerships[index]);
    }

    function _initializeOwnershipAt(uint256 index) internal virtual {
        if (_packedOwnerships[index] == 0) {
            _packedOwnerships[index] = _packedOwnershipOf(index);
        }
    }

    function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) {
        uint256 curr = tokenId;

        unchecked {
            if (_startTokenId() <= curr)
                if (curr < _currentIndex) {
                    uint256 packed = _packedOwnerships[curr];

                    if (packed & _BITMASK_BURNED == 0) {

                        while (packed == 0) {
                            packed = _packedOwnerships[--curr];
                        }
                        return packed;
                    }
                }
        }
        revert OwnerQueryForNonexistentToken();
    }

    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);
    }

    function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) {
        assembly {

            owner := and(owner, _BITMASK_ADDRESS)

            result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags))
        }
    }

    function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) {

        assembly {

            result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1))
        }
    }

    // =============================================================
    //                      APPROVAL OPERATIONS
    // =============================================================

    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ownerOf(tokenId);

        if (_msgSenderERC721A() != owner)
            if (!isApprovedForAll(owner, _msgSenderERC721A())) {
                revert ApprovalCallerNotOwnerNorApproved();
            }

        _tokenApprovals[tokenId].value = to;
        emit Approval(owner, to, tokenId);
    }

    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

        return _tokenApprovals[tokenId].value;
    }

    function setApprovalForAll(address operator, bool approved) public virtual override {
        if (operator == _msgSenderERC721A()) revert ApproveToCaller();

        _operatorApprovals[_msgSenderERC721A()][operator] = approved;
        emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
    }

    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return
            _startTokenId() <= tokenId &&
            tokenId < _currentIndex && 
            _packedOwnerships[tokenId] & _BITMASK_BURNED == 0;
    }


    function _isSenderApprovedOrOwner(
        address approvedAddress,
        address owner,
        address msgSender
    ) private pure returns (bool result) {
        assembly {

            owner := and(owner, _BITMASK_ADDRESS)

            msgSender := and(msgSender, _BITMASK_ADDRESS)

            result := or(eq(msgSender, owner), eq(msgSender, approvedAddress))
        }
    }


    function _getApprovedSlotAndAddress(uint256 tokenId)
        private
        view
        returns (uint256 approvedAddressSlot, address approvedAddress)
    {
        TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId];

        assembly {
            approvedAddressSlot := tokenApproval.slot
            approvedAddress := sload(approvedAddressSlot)
        }
    }

    // =============================================================
    //                      TRANSFER OPERATIONS
    // =============================================================

    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

        if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner();

        (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);

        if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
            if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();

        if (to == address(0)) revert TransferToZeroAddress();

        _beforeTokenTransfers(from, to, tokenId, 1);


        assembly {
            if approvedAddress {

                sstore(approvedAddressSlot, 0)
            }
        }

        unchecked {

            --_packedAddressData[from];
            ++_packedAddressData[to];

  
            _packedOwnerships[tokenId] = _packOwnershipData(
                to,
                _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked)
            );

            if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;

                if (_packedOwnerships[nextTokenId] == 0) {

                    if (nextTokenId != _currentIndex) {
                      
                        _packedOwnerships[nextTokenId] = prevOwnershipPacked;
                    }
                }
            }
        }

        emit Transfer(from, to, tokenId);
        _afterTokenTransfers(from, to, tokenId, 1);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, '');
    }


    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        transferFrom(from, to, tokenId);
        if (to.code.length != 0)
            if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
                revert TransferToNonERC721ReceiverImplementer();
            }
    }

    function _beforeTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    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
    // =============================================================

    function _mint(address to, uint256 quantity) internal virtual {
        uint256 startTokenId = _currentIndex;
        if (quantity == 0) revert MintZeroQuantity();

        _beforeTokenTransfers(address(0), to, startTokenId, quantity);


        unchecked {
 
            _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);

            _packedOwnerships[startTokenId] = _packOwnershipData(
                to,
                _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
            );

            uint256 toMasked;
            uint256 end = startTokenId + quantity;

            assembly {

                toMasked := and(to, _BITMASK_ADDRESS)

                log4(
                    0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, startTokenId 
                )

                for {
                    let tokenId := add(startTokenId, 1)
                } iszero(eq(tokenId, end)) {
                    tokenId := add(tokenId, 1)
                } {

                    log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)
                }
            }
            if (toMasked == 0) revert MintToZeroAddress();

            _currentIndex = end;
        }
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    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);

        unchecked {

            _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 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);
    }

    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);

                if (_currentIndex != end) revert();
            }
        }
    }

    function _safeMint(address to, uint256 quantity) internal virtual {
        _safeMint(to, quantity, '');
    }

    // =============================================================
    //                        BURN OPERATIONS
    // =============================================================

    function _burn(uint256 tokenId) internal virtual {
        _burn(tokenId, false);
    }

    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) {

            if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
                if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();
        }

        _beforeTokenTransfers(from, address(0), tokenId, 1);

        assembly {
            if approvedAddress {

                sstore(approvedAddressSlot, 0)
            }
        }

        unchecked {

            _packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1;

            _packedOwnerships[tokenId] = _packOwnershipData(
                from,
                (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked)
            );

            if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;

                if (_packedOwnerships[nextTokenId] == 0) {

                    if (nextTokenId != _currentIndex) {

                        _packedOwnerships[nextTokenId] = prevOwnershipPacked;
                    }
                }
            }
        }

        emit Transfer(from, address(0), tokenId);
        _afterTokenTransfers(from, address(0), tokenId, 1);

        unchecked {
            _burnCounter++;
        }
    }

    // =============================================================
    //                     EXTRA DATA OPERATIONS
    // =============================================================

    function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {
        uint256 packed = _packedOwnerships[index];
        if (packed == 0) revert OwnershipNotInitializedForExtraData();
        uint256 extraDataCasted;

        assembly {
            extraDataCasted := extraData
        }
        packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA);
        _packedOwnerships[index] = packed;
    }

    function _extraData(
        address from,
        address to,
        uint24 previousExtraData
    ) internal view virtual returns (uint24) {}


    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
    // =============================================================

    function _msgSenderERC721A() internal view virtual returns (address) {
        return msg.sender;
    }

  
    function _toString(uint256 value) internal pure virtual returns (string memory ptr) {
        assembly {

            ptr := add(mload(0x40), 128)

            mstore(0x40, ptr)


            let end := ptr

            for {

                let temp := value
                
                ptr := sub(ptr, 1)
                
                mstore8(ptr, add(48, mod(temp, 10)))
                temp := div(temp, 10)
            } temp {

                temp := div(temp, 10)
            } {
           
                ptr := sub(ptr, 1)
                mstore8(ptr, add(48, mod(temp, 10)))
            }

            let length := sub(end, ptr)
          
            ptr := sub(ptr, 32)
            
            mstore(ptr, length)
        }
    }
}

// File: contracts/DOINKS.sol

pragma solidity ^0.8.0;

// =============================================================
//                       PROJECT INFO
// =============================================================
error FreeMintNotActive();

contract ethdoinks is ERC721A, Ownable, ReentrancyGuard {
  using Address for address;
  using Strings for uint;

  string  private  baseTokenURI = "ipfs://bafybeiepfviadstx4dmvkvscukpwa6evlaambof6bary2vr5l3gyd263jm";

  uint256 public constant  maxSupply = 420;
  uint256 public constant MAX_MINTS_PER_TX = 5;
  uint256 public constant FREE_MINTS_PER_TX = 1;
  uint256 public constant PUBLIC_SALE_PRICE = .0069 ether;
  uint256 public constant TOTAL_FREE_MINTS = 212;
  bool public isFreeMintActive = false;
  bool public isPublicSaleActive = false;
  
  mapping(address => bool) public claimedFreeMint;

      constructor(string memory _baseTokenURI) ERC721A("Eth Doinks", "DOINK") {

  }
    function freeMint() external {
    if(!isFreeMintActive) revert FreeMintNotActive();
    require(totalSupply() < TOTAL_FREE_MINTS, "No more free mints available");
    require(!claimedFreeMint[msg. sender],"You have already claimed your free mint");
    claimedFreeMint[msg.sender] = true;
    _safeMint (msg. sender, 1);
    }
    

  function mint(uint256 numberOfTokens)
      external
      payable
  
  {
    require(isPublicSaleActive, "Public sale is not open");
    require(totalSupply() > TOTAL_FREE_MINTS, "Free mints are still available"); // you can't mint until free mints are sold
    require(
    totalSupply() + numberOfTokens <= maxSupply,
        "Maximum supply exceeded"
    );

    {
        require(
            (PUBLIC_SALE_PRICE * numberOfTokens) <= msg.value,
            "Incorrect ETH value sent"
        );
    
    _safeMint(msg.sender, numberOfTokens);
    }
  }

  function setBaseURI(string memory baseURI)
    public
    onlyOwner
  {
    baseTokenURI = baseURI;
  }

  function _startTokenId() internal view virtual override returns (uint256) {
        return 1;
    }

  function AirdropMint(uint quantity, address user)
    public
    onlyOwner
  {
    require(
      quantity > 0,
      "Invalid mint amount"
    );
    require(
      totalSupply() + quantity <= maxSupply,
      "Maximum supply exceeded"
    );
    _safeMint(user, quantity);
  }

  function withdraw()
    public
    onlyOwner
    nonReentrant
  {
    Address.sendValue(payable(msg.sender), address(this).balance);
  }

  function tokenURI(uint _tokenId)
    public
    view
    virtual
    override
    returns (string memory)
  {
    require(
      _exists(_tokenId),
      "ERC721Metadata: URI query for nonexistent token"
    );
    return string(abi.encodePacked(baseTokenURI, "/", _tokenId.toString(), ".json"));
  }

  function _baseURI()
    internal
    view
    virtual
    override
    returns (string memory)
  {
    return baseTokenURI;
  }

  function setIsPublicSaleActive(bool _isPublicSaleActive)
      external
      onlyOwner
  {
      isPublicSaleActive = _isPublicSaleActive;
  }
   
   function setIsFreeMintActive (bool _isFreeMintActive)
     external onlyOwner
    {
    isFreeMintActive= _isFreeMintActive;
    }

/** function setNumFreeMints(uint256 _numfreemints)
      external
      onlyOwner
  {
      TOTAL_FREE_MINTS = _numfreemints;
  }

  function setSalePrice(uint256 _price)
      external
      onlyOwner
  {
      PUBLIC_SALE_PRICE = _price;
  }

  function setMaxLimitPerTransaction(uint256 _limit)
      external
      onlyOwner
  {
      MAX_MINTS_PER_TX = _limit;
  } 
                                                                                                                     
 */
}