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

import "@openzeppelin/contracts/utils/Strings.sol";

import "./ERC721AKarine.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/interfaces/IERC2981.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

// import "hardhat/console.sol";

contract KarineDAO is ERC721AKarine, Ownable, Pausable, ReentrancyGuard, IERC2981 {
  string private _baseTokenURI;
  mapping(address => bool) private _proxyRegistryAddress;

  uint256[5] private _mosaicDataArr; // 5*256 bit to store 1158 bit location of mosaic nft

  // init swapNFTMapping and alter value when random later
  uint8[147] private _canNotMintNFTMapping; // use for random swap nft

  uint64 private _privateOpenTime;
  uint64 private _publicOpenTime;
  uint64 private _revelationTime;

  uint16 private _startIndex = 0;
  uint16 internal _royalty = 680; // base 10000, 6.8%
  uint32 internal randNonce = 0;
  uint16 private _canMintNFTMinted;
  uint16 private _canMintNFTMintedAfterRevelation;
  uint8 private _canNotMintNFTMinted;
  bool private _revelated = false;

  address payable private _productOwnerAddr;

  // constant
  uint256 public constant VERSION = 10200;
  uint16 public constant BASE = 10000; // base for royalty

  uint8 public immutable MAX_MINT_TIER_1 = 3;
  uint8 public immutable MAX_MINT_TIER_2 = 1;
  uint8 public immutable MAX_MINT_PUBLIC = 10;

  /// @dev NFT JSON ID map : | 210 premint | 1158 can mint | 147 swap only |
  /// @dev NFT ID map : | 210 premint | <= 1158 can mint | 147 swap only ~ can mint left |
  uint16 public immutable TOTAL_PREMINT_NFT;
  uint16 public immutable TOTAL_CAN_MINT_NFT;
  uint16 public immutable TOTAL_CANNOT_MINT_NFT;

  uint256 public immutable PRIVATE_PRICE;
  uint256 public immutable PUBLIC_PRICE;

  constructor(
    string memory baseURI,
    address payable productOwnerAddr,
    uint256[5] memory mosaicDataArr,
    uint64 privateOpenTime,
    uint64 publicOpenTime,
    uint64 revelationTime,
    uint16 totalPremintNFT,
    uint16 totalCanmintNFT,
    uint16 totalCannotmintNFT,
    uint256 privatePrice,
    uint256 publicPrice
  ) ERC721AKarine("KRDAOT", "KRDAOT") {
    _baseTokenURI = baseURI;
    _productOwnerAddr = productOwnerAddr;
    _mosaicDataArr = mosaicDataArr;
    _privateOpenTime = privateOpenTime;
    _publicOpenTime = publicOpenTime;
    _revelationTime = revelationTime;

    // init immutable
    TOTAL_PREMINT_NFT = totalPremintNFT;
    TOTAL_CAN_MINT_NFT = totalCanmintNFT;
    TOTAL_CANNOT_MINT_NFT = totalCannotmintNFT;

    PRIVATE_PRICE = privatePrice;
    PUBLIC_PRICE = publicPrice;

    // init swapNFTMapping and alter value when random later
    for (uint8 i = 0; i < totalCannotmintNFT; i++) {
      _canNotMintNFTMapping[i] = i;
    }
    _safeMint(_productOwnerAddr, totalPremintNFT);
  }

  ///@dev productOwner addr

  function setProductOwner(address addr) external onlyOwner {
    _productOwnerAddr = payable(addr);
  }

  function getProductOwner() external view returns (address) {
    return _productOwnerAddr;
  }

  ///@dev allow set _mosaicDataArr before _revelated to avoid issue
  function setMosaicDataArr(uint256[5] memory mosaicDataArr) external onlyOwner {
    require(!_revelated);
    _mosaicDataArr = mosaicDataArr;
  }

  ///@dev setTime

  function setTime(
    uint64 privateOpenTime,
    uint64 publicOpenTime,
    uint64 revelationTime
  ) external onlyOwner {
    require(!_revelated);
    _privateOpenTime = privateOpenTime;
    _publicOpenTime = publicOpenTime;
    _revelationTime = revelationTime;
  }

  /**
  @dev royalty
   */

  function royaltyInfo(uint256, uint256 _salePrice)
    external
    view
    override
    returns (address receiver, uint256 royaltyAmount)
  {
    return (_productOwnerAddr, (_salePrice * _royalty) / BASE);
  }

  function setRoyalty(uint16 royalty) external onlyOwner {
    _royalty = royalty;
  }

  ///@dev white list

  function addToWhiteList1(address[] memory addrArr) external {
    require((msg.sender == _productOwnerAddr) || (msg.sender == owner()));
    for (uint256 i = 0; i < addrArr.length; i++) {
      _addressData[addrArr[i]].limitPrivateMint = MAX_MINT_TIER_1;
    }
  }

  function addToWhiteList2(address[] memory addrArr) external {
    require((msg.sender == _productOwnerAddr) || (msg.sender == owner()));
    for (uint256 i = 0; i < addrArr.length; i++) {
      _addressData[addrArr[i]].limitPrivateMint = MAX_MINT_TIER_2;
    }
  }

  function removeFromWhiteList(address[] memory addrArr) external {
    require((msg.sender == _productOwnerAddr) || (msg.sender == owner()));
    for (uint256 i = 0; i < addrArr.length; i++) {
      _addressData[addrArr[i]].limitPrivateMint = 0;
    }
  }

  function getPrivateLimitOfAddr(address addr) external view returns (uint8) {
    return _addressData[addr].limitPrivateMint;
  }

  ///@dev cannot underflow if everything correct
  function getMintTimesLeft(address addr, bool isPrivate) external view returns (uint256) {
    if (!_revelated) {
      if (isPrivate) {
        if (_addressData[addr].limitPrivateMint > _addressData[addr].numberPrivateMinted) {
          return _addressData[addr].limitPrivateMint - _addressData[addr].numberPrivateMinted;
        } else {
          return 0;
        }
      } else {
        return MAX_MINT_PUBLIC - (_numberMinted(addr) - _addressData[addr].numberPrivateMinted);
      }
    } else {
      if (addr == _productOwnerAddr) {
        return TOTAL_CAN_MINT_NFT - (_canMintNFTMinted + _canMintNFTMintedAfterRevelation);
      } else {
        return 0;
      }
    }
  }

  // check mosaic nft

  function isMosaic(uint16 tokenId) public view returns (bool) {
    if (!_revelated || tokenId < TOTAL_PREMINT_NFT) {
      return false;
    }
    uint16 indexInCanMintNFT = tokenIdToIndex(tokenId) - TOTAL_PREMINT_NFT;
    uint16 idxInMosaicDataArr = indexInCanMintNFT / 256;
    if (idxInMosaicDataArr >= _mosaicDataArr.length) {
      return false;
    }
    // get bit info
    uint256 bitValue = (_mosaicDataArr[idxInMosaicDataArr] & (1 << (indexInCanMintNFT % 256)));
    return bitValue > 0;
  }

  /// @dev minting

  /**
   * @dev mints `numToken` tokens and assigns it to
   * `msg.sender` by calling _safeMint function.
   *
   * Requirements:
   * - Current timestamp must within period of private sale `_privateOpenTime` - `_publicOpenTime`.
   * - Ether amount sent greater or equal the `PRIVATE_PRICE` multipled by `numToken`.
   * - `numToken` within limits of max number of tokens minted in single txn.
   * @param numToken - Number of tokens to be minted
   */
  function mintPrivateSale(uint8 numToken) external payable whenNotPaused {
    uint256 time = block.timestamp;
    require(
      (!_revelated) &&
        (time >= _privateOpenTime && time < _publicOpenTime) &&
        _addressData[msg.sender].limitPrivateMint > 0,
      "Mint is not open"
    );
    require((_canMintNFTMinted + numToken) <= TOTAL_CAN_MINT_NFT, "Out of stock");
    require(!Address.isContract(msg.sender));
    require(numToken > 0, "Empty numToken");
    require(msg.value >= PRIVATE_PRICE * numToken, "Insufficient ETH");
    require(
      (_addressData[msg.sender].numberPrivateMinted + numToken) <= _addressData[msg.sender].limitPrivateMint,
      "Out of times"
    );
    _addressData[msg.sender].numberPrivateMinted += numToken;
    _canMintNFTMinted += numToken;

    _safeMint(msg.sender, numToken);
  }

  /**
   * @dev mints `numToken` tokens and assigns it to
   * `msg.sender` by calling _safeMint function.
   *
   * Requirements:
   * - Current timestamp must within period of public sale `_publicOpenTime` - `_revelationTime`.
   * - Ether amount sent greater or equal the `PUBLIC_PRICE` multipled by `numToken`.
   * - `numToken` within limits of max number of tokens minted in single txn.
   * @param numToken - Number of tokens to be minted
   */
  function mintPublicSale(uint8 numToken) external payable whenNotPaused {
    uint256 time = block.timestamp;
    require((!_revelated) && (time >= _publicOpenTime && time < _revelationTime), "Mint is not open");
    require((_canMintNFTMinted + numToken) <= TOTAL_CAN_MINT_NFT, "Out of stock");
    require(!Address.isContract(msg.sender));
    require(numToken > 0, "Empty numToken");
    require(msg.value >= PUBLIC_PRICE * numToken, "Insufficient ETH");

    require(
      (_numberMinted(msg.sender) - _addressData[msg.sender].numberPrivateMinted) + numToken <= MAX_MINT_PUBLIC,
      "Out of times"
    );

    _canMintNFTMinted += numToken;

    _safeMint(msg.sender, numToken);
  }

  function mintAndTransferAfterRevelation(uint8 numToken, address addr) external whenNotPaused {
    require(_revelated && msg.sender == _productOwnerAddr);
    require((_canMintNFTMinted + _canMintNFTMintedAfterRevelation + numToken) <= TOTAL_CAN_MINT_NFT, "Out of NFT");
    uint256 startTokenId = _currentIndex;
    for (uint8 i = 0; i < numToken; i++) {
      _ownerships[startTokenId].isCanMintNFT = true;
      _ownerships[startTokenId].mappingIndex = _canMintNFTMinted + _canMintNFTMintedAfterRevelation + i;

      startTokenId++;
    }

    _canMintNFTMintedAfterRevelation += numToken;
    _safeMint(addr, numToken);
  }

  /**
   @dev revelation
   */
  function revelate(string memory baseTokenURI, bool mintAllUnMinted) external onlyOwner {
    require(block.timestamp >= _revelationTime);
    if (mintAllUnMinted) {
      _safeMint(_productOwnerAddr, TOTAL_CAN_MINT_NFT - _canMintNFTMinted);
      _canMintNFTMinted = TOTAL_CAN_MINT_NFT;
    }
    // random _startIndex
    _startIndex = uint16(random(TOTAL_CAN_MINT_NFT));
    _baseTokenURI = baseTokenURI;
    _revelated = true;
  }

  function emergencyUnrevelate() external onlyOwner {
    _revelated = false;
  }

  /**
   @dev swap
   */

  function random(uint256 _modulus) private returns (uint256) {
    randNonce++;
    return uint256(keccak256(abi.encodePacked(block.timestamp, msg.sender, randNonce))) % _modulus;
  }

  function swap(uint16[] memory tokenIds) external whenNotPaused {
    require(block.timestamp >= _revelationTime && _revelated, "Swap is not open");
    require((tokenIds.length % 2) == 0, "Length must be even");
    uint8 numToken = uint8(tokenIds.length / 2);
    require((_canNotMintNFTMinted + numToken) <= TOTAL_CANNOT_MINT_NFT, "Out of NFT");

    for (uint16 i = 0; i < tokenIds.length; i++) {
      require(isMosaic(tokenIds[i]), "Only use mosaic");
    }
    // transfer all mosaic to product owner address
    for (uint16 i = 0; i < tokenIds.length; i++) {
      transferFrom(msg.sender, _productOwnerAddr, tokenIds[i]);
    }

    // random NFT

    uint256 startTokenId = _currentIndex;
    uint8 updatedCanNotMintNFTMinted = _canNotMintNFTMinted;
    for (uint8 i = 0; i < numToken; i++) {
      uint8 randomNumber = updatedCanNotMintNFTMinted +
        uint8(random(TOTAL_CANNOT_MINT_NFT - updatedCanNotMintNFTMinted));
      // swap value in _canNotMintNFTMapping
      uint8 temp = _canNotMintNFTMapping[randomNumber];
      _canNotMintNFTMapping[randomNumber] = _canNotMintNFTMapping[updatedCanNotMintNFTMinted];
      _canNotMintNFTMapping[updatedCanNotMintNFTMinted] = temp;

      _ownerships[startTokenId].isCanMintNFT = false;
      _ownerships[startTokenId].mappingIndex = temp;

      startTokenId++;
      updatedCanNotMintNFTMinted++;
    }
    _canNotMintNFTMinted = updatedCanNotMintNFTMinted;
    // mint NFT to msg.sender
    _safeMint(msg.sender, numToken);
  }

  /**
   @dev tokenUri
   */
  function _baseURI() internal view override returns (string memory) {
    return _baseTokenURI;
  }

  function setBaseURI(string memory baseURI) external onlyOwner {
    require(!_revelated);
    _baseTokenURI = baseURI;
  }

  function tokenIdToIndex(uint256 tokenId) public view returns (uint16) {
    if (!_revelated) {
      return uint16(tokenId);
    }
    uint256 index;
    if (tokenId < TOTAL_PREMINT_NFT) {
      // for premint NFT mint in correct time
      index = tokenId + _startIndex;
      index %= TOTAL_PREMINT_NFT;
    } else if (tokenId < (TOTAL_PREMINT_NFT + _canMintNFTMinted)) {
      // for canmint NFT mint in correct time
      index = (tokenId - TOTAL_PREMINT_NFT) + _startIndex;
      index %= TOTAL_CAN_MINT_NFT;
      index += TOTAL_PREMINT_NFT;
    } else if (_ownerships[tokenId].isCanMintNFT) {
      // for canmint NFT mint after revelation
      index = _ownerships[tokenId].mappingIndex + _startIndex;
      index %= TOTAL_CAN_MINT_NFT;
      index += TOTAL_PREMINT_NFT;
    } else {
      // for can not mint nft
      index = _ownerships[tokenId].mappingIndex + TOTAL_PREMINT_NFT + TOTAL_CAN_MINT_NFT;
    }
    return uint16(index);
  }

  function tokenURI(uint256 tokenId) public view override returns (string memory) {
    if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

    string memory baseURI = _baseURI();
    uint256 index = tokenIdToIndex(tokenId);

    return
      bytes(baseURI).length != 0
        ? string(abi.encodePacked(baseURI, Strings.toString(index), ".json"))
        : string(abi.encodePacked(Strings.toString(index), ".json"));
  }

  /**
   @dev withdraw
   */
  function withdraw() external nonReentrant whenNotPaused {
    require(msg.sender == _productOwnerAddr);
    payable(msg.sender).transfer(address(this).balance);
  }

  /** @dev pause */

  function pause() public onlyOwner {
    _pause();
  }

  function unpause() public onlyOwner {
    _unpause();
  }

  /**
  @dev get tokenId to nft mapping
   */

  function getAllTokenIdToIndex() external view returns (uint16[] memory) {
    uint16[] memory allTokenIdToIndex = new uint16[](_currentIndex);
    for (uint256 i; i < _currentIndex; i++) {
      allTokenIdToIndex[i] = uint16(tokenIdToIndex(i));
    }
    return allTokenIdToIndex;
  }

  function getPrivateOpenTime() external view returns (uint64) {
    return _privateOpenTime;
  }

  function getPublicOpenTime() external view returns (uint64) {
    return _publicOpenTime;
  }

  function getRevelationTime() external view returns (uint64) {
    return _revelationTime;
  }

  function getStartIndex() external view returns (uint16) {
    return _startIndex;
  }

  function getCanMintNFTMinted() external view returns (uint16) {
    return _canMintNFTMinted + _canMintNFTMintedAfterRevelation;
  }

  function getCanNotMintNFTMinted() external view returns (uint16) {
    return _canNotMintNFTMinted;
  }

  function getMosaicDataArr() external view returns (uint256[5] memory) {
    return _mosaicDataArr;
  }

  function getRevelated() external view returns (bool) {
    return _revelated;
  }

  /**
   * Override isApprovedForAll to whitelisted marketplaces to enable gas-free listings.
   *
   */
  function isApprovedForAll(address owner, address operator) public view override returns (bool) {
    // check if this is an approved marketplace
    if (_proxyRegistryAddress[operator]) {
      return true;
    }
    // otherwise, use the default ERC721 isApprovedForAll()
    return super.isApprovedForAll(owner, operator);
  }

  /*
   * Function to set status of proxy contracts addresses
   *
   */
  function setProxy(address proxyAddress, bool value) external onlyOwner {
    _proxyRegistryAddress[proxyAddress] = value;
  }
}

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

pragma solidity ^0.8.0;

/**
 * @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);
    }
}

// SPDX-License-Identifier: MIT
// Creator: Chiru Labs
// Custom: Tokenize NFT Team

pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";

error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintedQueryForZeroAddress();
error BurnedQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerIndexOutOfBounds();
error OwnerQueryForNonexistentToken();
error TokenIndexOutOfBounds();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error URIQueryForNonexistentToken();

/**
 * @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..).
 *
 * Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 *
 * Assumes that the maximum token id cannot exceed 2**128 - 1 (max value of uint128).
 */
contract ERC721AKarine is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
  using Address for address;
  using Strings for uint256;

  // Compiler will pack this into a single 256bit word.
  struct TokenOwnership {
    // The address of the owner.
    address addr;
    // Keeps track of the start time of ownership with minimal overhead for tokenomics.
    uint64 startTimestamp;
    // Whether the token has been burned.
    bool burned;
    // Use for custom TokenURI
    bool isCanMintNFT;
    uint16 mappingIndex;
  }

  // Compiler will pack this into a single 256bit word.
  struct AddressData {
    // Realistically, 2**64-1 is more than enough.
    uint64 balance;
    // Keeps track of mint count with minimal overhead for tokenomics.
    uint64 numberMinted;
    // Keeps track of burn count with minimal overhead for tokenomics.
    uint64 numberBurned;
    // for private mint
    uint8 numberPrivateMinted;
    uint8 limitPrivateMint;
  }

  // Compiler will pack the following
  // _currentIndex and _burnCounter into a single 256bit word.

  // The tokenId of the next token to be minted.
  uint128 internal _currentIndex;

  // The number of tokens burned.
  uint128 internal _burnCounter;

  // Token name
  string private _name;

  // Token symbol
  string private _symbol;

  // Mapping from token ID to ownership details
  // An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.
  mapping(uint256 => TokenOwnership) internal _ownerships;

  // Mapping owner address to address data
  mapping(address => AddressData) internal _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) {
    // Counter underflow is impossible as _burnCounter cannot be incremented
    // more than _currentIndex times
    unchecked {
      return _currentIndex - _burnCounter;
    }
  }

  /**
   * @dev See {IERC721Enumerable-tokenByIndex}.
   * 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 tokenByIndex(uint256 index) public view override returns (uint256) {
    uint256 numMintedSoFar = _currentIndex;
    uint256 tokenIdsIdx;

    // 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.burned) {
          if (tokenIdsIdx == index) {
            return i;
          }
          tokenIdsIdx++;
        }
      }
    }
    revert TokenIndexOutOfBounds();
  }

  /**
   * @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) {
    if (index >= balanceOf(owner)) revert OwnerIndexOutOfBounds();
    uint256 numMintedSoFar = _currentIndex;
    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.burned) {
          continue;
        }
        if (ownership.addr != address(0)) {
          currOwnershipAddr = ownership.addr;
        }
        if (currOwnershipAddr == owner) {
          if (tokenIdsIdx == index) {
            return i;
          }
          tokenIdsIdx++;
        }
      }
    }

    // Execution should never reach this point.
    revert();
  }

  /**
   * @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) {
    if (owner == address(0)) revert BalanceQueryForZeroAddress();
    return uint256(_addressData[owner].balance);
  }

  function _numberMinted(address owner) internal view returns (uint256) {
    if (owner == address(0)) revert MintedQueryForZeroAddress();
    return uint256(_addressData[owner].numberMinted);
  }

  function _numberBurned(address owner) internal view returns (uint256) {
    if (owner == address(0)) revert BurnedQueryForZeroAddress();
    return uint256(_addressData[owner].numberBurned);
  }

  /**
   * 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) {
    uint256 curr = tokenId;

    unchecked {
      if (curr < _currentIndex) {
        TokenOwnership memory ownership = _ownerships[curr];
        if (!ownership.burned) {
          if (ownership.addr != address(0)) {
            return ownership;
          }
          // Invariant:
          // There will always be an ownership that has an address and is not burned
          // before an ownership that does not have an address and is not burned.
          // Hence, curr will not underflow.
          while (true) {
            curr--;
            ownership = _ownerships[curr];
            if (ownership.addr != address(0)) {
              return ownership;
            }
          }
        }
      }
    }
    revert OwnerQueryForNonexistentToken();
  }

  /**
   * @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) {
    if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

    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 = ERC721AKarine.ownerOf(tokenId);
    if (to == owner) revert ApprovalToCurrentOwner();

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

    _approve(to, tokenId, owner);
  }

  /**
   * @dev See {IERC721-getApproved}.
   */
  function getApproved(uint256 tokenId) public view override returns (address) {
    if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

    return _tokenApprovals[tokenId];
  }

  /**
   * @dev See {IERC721-setApprovalForAll}.
   */
  function setApprovalForAll(address operator, bool approved) public override {
    if (operator == _msgSender()) revert ApproveToCaller();

    _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 virtual override {
    _transfer(from, to, tokenId);
    if (!_checkOnERC721Received(from, to, tokenId, _data)) {
      revert TransferToNonERC721ReceiverImplementer();
    }
  }

  /**
   * @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 && !_ownerships[tokenId].burned;
  }

  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;
    if (to == address(0)) revert MintToZeroAddress();
    if (quantity == 0) revert MintZeroQuantity();

    _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 > 3.4e38 (2**128) - 1
    unchecked {
      _addressData[to].balance += uint64(quantity);
      _addressData[to].numberMinted += uint64(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 && !_checkOnERC721Received(address(0), to, updatedIndex, _data)) {
          revert TransferToNonERC721ReceiverImplementer();
        }
        updatedIndex++;
      }

      _currentIndex = uint128(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 ||
      isApprovedForAll(prevOwnership.addr, _msgSender()) ||
      getApproved(tokenId) == _msgSender());

    if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
    if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();
    if (to == address(0)) revert TransferToZeroAddress();

    _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**128.
    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)) {
        // This will suffice for checking _exists(nextTokenId),
        // as a burned slot cannot contain the zero address.
        if (nextTokenId < _currentIndex) {
          _ownerships[nextTokenId].addr = prevOwnership.addr;
          _ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
        }
      }
    }

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

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

    _beforeTokenTransfers(prevOwnership.addr, address(0), 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**128.
    unchecked {
      _addressData[prevOwnership.addr].balance -= 1;
      _addressData[prevOwnership.addr].numberBurned += 1;

      // Keep track of who burned the token, and the timestamp of burning.
      _ownerships[tokenId].addr = prevOwnership.addr;
      _ownerships[tokenId].startTimestamp = uint64(block.timestamp);
      _ownerships[tokenId].burned = true;

      // If the ownership slot of tokenId+1 is not explicitly set, that means the burn 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)) {
        // This will suffice for checking _exists(nextTokenId),
        // as a burned slot cannot contain the zero address.
        if (nextTokenId < _currentIndex) {
          _ownerships[nextTokenId].addr = prevOwnership.addr;
          _ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
        }
      }
    }

    emit Transfer(prevOwnership.addr, address(0), tokenId);
    _afterTokenTransfers(prevOwnership.addr, address(0), tokenId, 1);

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

  /**
   * @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 TransferToNonERC721ReceiverImplementer();
        } 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.
   * And also called before burning one token.
   *
   * startTokenId - the first token id to be transferred
   * quantity - the amount to be transferred
   *
   * Calling conditions:
   *
   * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
   * transferred to `to`.
   * - When `from` is zero, `tokenId` will be minted for `to`.
   * - When `to` is zero, `tokenId` will be burned by `from`.
   * - `from` and `to` are never both zero.
   */
  function _beforeTokenTransfers(
    address from,
    address to,
    uint256 startTokenId,
    uint256 quantity
  ) internal virtual {}

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // 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;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @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 ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    /**
     * @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 virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_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 {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _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 virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @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.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: 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`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);

        _afterTokenTransfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);

        _afterTokenTransfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * 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
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

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

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits a {ApprovalForAll} event.
     */
    function _setApprovalForAll(
        address owner,
        address operator,
        bool approved
    ) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @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.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721URIStorage.sol)

pragma solidity ^0.8.0;

import "../ERC721.sol";

/**
 * @dev ERC721 token with storage based token URI management.
 */
abstract contract ERC721URIStorage is ERC721 {
    using Strings for uint256;

    // Optional mapping for token URIs
    mapping(uint256 => string) private _tokenURIs;

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token");

        string memory _tokenURI = _tokenURIs[tokenId];
        string memory base = _baseURI();

        // If there is no base URI, return the token URI.
        if (bytes(base).length == 0) {
            return _tokenURI;
        }
        // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
        if (bytes(_tokenURI).length > 0) {
            return string(abi.encodePacked(base, _tokenURI));
        }

        return super.tokenURI(tokenId);
    }

    /**
     * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
        _tokenURIs[tokenId] = _tokenURI;
    }

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

        if (bytes(_tokenURIs[tokenId]).length != 0) {
            delete _tokenURIs[tokenId];
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

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

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

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

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

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

    /**
     * @dev 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);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

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

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

    bool private _paused;

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @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;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

/**
 * @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;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @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 `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721.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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721.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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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);
            }
        }
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

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

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

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

pragma solidity ^0.8.0;

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

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

pragma solidity ^0.8.0;

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

{
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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payable","name":"productOwnerAddr","type":"address"},{"internalType":"uint256[5]","name":"mosaicDataArr","type":"uint256[5]"},{"internalType":"uint64","name":"privateOpenTime","type":"uint64"},{"internalType":"uint64","name":"publicOpenTime","type":"uint64"},{"internalType":"uint64","name":"revelationTime","type":"uint64"},{"internalType":"uint16","name":"totalPremintNFT","type":"uint16"},{"internalType":"uint16","name":"totalCanmintNFT","type":"uint16"},{"internalType":"uint16","name":"totalCannotmintNFT","type":"uint16"},{"internalType":"uint256","name":"privatePrice","type":"uint256"},{"internalType":"uint256","name":"publicPrice","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"ApprovalToCurrentOwner","type":"error"},{"inputs":[],"name":"ApproveToCaller","type":"error"},{"inputs":[],"name":"BalanceQueryForZeroAddress","type":"error"},{"inputs":[],"name":"MintToZeroAddress","type":"error"},{"inputs":[],"name":"MintZeroQuantity","type":"error"},{"inputs":[],"name":"MintedQueryForZeroAddress","type":"error"},{"inputs":[],"name":"OwnerIndexOutOfBounds","type":"error"},{"inputs":[],"name":"OwnerQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"TokenIndexOutOfBounds","type":"error"},{"inputs":[],"name":"TransferCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"TransferFromIncorrectOwner","type":"error"},{"inputs":[],"name":"TransferToNonERC721ReceiverImplementer","type":"error"},{"inputs":[],"name":"TransferToZeroAddress","type":"error"},{"inputs":[],"name":"URIQueryForNonexistentToken","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"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":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"BASE","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_MINT_PUBLIC","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_MINT_TIER_1","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_MINT_TIER_2","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PRIVATE_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PUBLIC_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TOTAL_CANNOT_MINT_NFT","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TOTAL_CAN_MINT_NFT","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TOTAL_PREMINT_NFT","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VERSION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"addrArr","type":"address[]"}],"name":"addToWhiteList1","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"addrArr","type":"address[]"}],"name":"addToWhiteList2","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"emergencyUnrevelate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getAllTokenIdToIndex","outputs":[{"internalType":"uint16[]","name":"","type":"uint16[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getCanMintNFTMinted","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getCanNotMintNFTMinted","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"bool","name":"isPrivate","type":"bool"}],"name":"getMintTimesLeft","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMosaicDataArr","outputs":[{"internalType":"uint256[5]","name":"","type":"uint256[5]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"getPrivateLimitOfAddr","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPrivateOpenTime","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getProductOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPublicOpenTime","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRevelated","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRevelationTime","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getStartIndex","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"tokenId","type":"uint16"}],"name":"isMosaic","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"numToken","type":"uint8"},{"internalType":"address","name":"addr","type":"address"}],"name":"mintAndTransferAfterRevelation","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"numToken","type":"uint8"}],"name":"mintPrivateSale","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint8","name":"numToken","type":"uint8"}],"name":"mintPublicSale","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"addrArr","type":"address[]"}],"name":"removeFromWhiteList","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"baseTokenURI","type":"string"},{"internalType":"bool","name":"mintAllUnMinted","type":"bool"}],"name":"revelate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"_salePrice","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"royaltyAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"baseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[5]","name":"mosaicDataArr","type":"uint256[5]"}],"name":"setMosaicDataArr","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"setProductOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"proxyAddress","type":"address"},{"internalType":"bool","name":"value","type":"bool"}],"name":"setProxy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"royalty","type":"uint16"}],"name":"setRoyalty","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint64","name":"privateOpenTime","type":"uint64"},{"internalType":"uint64","name":"publicOpenTime","type":"uint64"},{"internalType":"uint64","name":"revelationTime","type":"uint64"}],"name":"setTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16[]","name":"tokenIds","type":"uint16[]"}],"name":"swap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenIdToIndex","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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-----Decoded View---------------
Arg [0] : baseURI (string): ipfs://QmVMseqkvabJyVRNv7MJkX7YzwrYrVy3CF7kW3jrf3HFrh/
Arg [1] : productOwnerAddr (address): 0x5a7E314068c14149fC9EAad971E4cfa4F4f652f3
Arg [2] : mosaicDataArr (uint256[5]): 28949349709317563607370830884348472736727387853093819675903672117933031563777,51346342550531961882865034119192679048422849630883416236461198130436345303040,18106959420202236846887990130831684161810401384607261337769684819104900662961,153729501246644468192723647037815867890979060119598007209840615845694570645,9872925478993167276836000832733659224067
Arg [3] : privateOpenTime (uint64): 1647039600
Arg [4] : publicOpenTime (uint64): 1647061200
Arg [5] : revelationTime (uint64): 1647082800
Arg [6] : totalPremintNFT (uint16): 210
Arg [7] : totalCanmintNFT (uint16): 1158
Arg [8] : totalCannotmintNFT (uint16): 147
Arg [9] : privatePrice (uint256): 500000000000000
Arg [10] : publicPrice (uint256): 750000000000000

-----Encoded View---------------
18 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000001e0
Arg [1] : 0000000000000000000000005a7e314068c14149fc9eaad971e4cfa4f4f652f3
Arg [2] : 4000c054008444001041010060822c310012014040026a100a0a529002202201
Arg [3] : 718500000990b2090c2c0056e08c0a08003b66181042481bc06001c008221000
Arg [4] : 28082d048441000704103821081412a000818040086880de010442561c0546b1
Arg [5] : 005702001d9c003210d40e0921522b0840e1b0320c0c029401c0876818348095
Arg [6] : 0000000000000000000000000000001d039048289c3a46111010142a00035803
Arg [7] : 00000000000000000000000000000000000000000000000000000000622bd470
Arg [8] : 00000000000000000000000000000000000000000000000000000000622c28d0
Arg [9] : 00000000000000000000000000000000000000000000000000000000622c7d30
Arg [10] : 00000000000000000000000000000000000000000000000000000000000000d2
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000486
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000093
Arg [13] : 0000000000000000000000000000000000000000000000000001c6bf52634000
Arg [14] : 0000000000000000000000000000000000000000000000000002aa1efb94e000
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000036
Arg [16] : 697066733a2f2f516d564d7365716b7661624a7956524e76374d4a6b5837597a
Arg [17] : 777259725679334346376b57336a726633484672682f00000000000000000000