// File: contracts/Gloomz.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "./Ownable.sol";
import "./ERC721A.sol";
contract Gloomz  is ERC721A , Ownable{

  address  public constant DEV_ADDRESS = 0x8C124a29116da613993d876292aAb291eEFaA808;
  address public constant MANAGING_ADDR = 0x5aFD33DdBea46B1C9E31B0EeCF3d199eDdCeA15f;
  address public constant ARTIST_ADDR = 0xA8b7575f1CCE3864254eD790BC1Cb140D87cCDb9;
  address public constant COMMUNITY_MANAGER_ADDR = 0x8d04eec8d87Bf15007B5A00c97c15ECA9850378a;
  address public constant MARKETING_ADDR = 0xA32518031ce5764418397FD4e246163a1615abff;
  address public constant SECONDARY_ARTIST_ADDR = 0x4eD626561fa31ADAC1F7DC1B7c4608b85F9376F3;
  address public constant LEGAL_ADDR = 0x9A895862583e941271BD3421F9018b275dca2728;
  address public constant PARTNERSHIP_ADDR = 0x6DE8bca209E5DAf2FB02A7B978ED312D92c5bE5f;

  uint256 public constant MINT_PRICE = 0.01 ether;
  uint256 public constant MAX_PER_TX_FREE = 3;
  uint256 public constant MAX_PER_TX_PUBLIC = 10;
  uint256 public constant SUPPLY_CAP = 5555;
  uint256 public constant AMOUNT_FREE_MINTS = 2000;
  uint256 public  DEV_MINT_RESERVE = 200;
  bool public  saleOpen = false;
  uint public DEV_MINT_MINTED = 0;

  constructor()   ERC721A("Gloomz","GLOOMZ" )  {

  }



  function mintGloom(uint256 amount)  payable public  {
    require(saleOpen== true);
    uint256 ts = totalSupply();
    require(ts<SUPPLY_CAP);
    uint256 freeMints = AMOUNT_FREE_MINTS;
    uint256 reserve = DEV_MINT_RESERVE;
    uint256 supplyCap = ts+reserve+ amount ;
    int freeMintLeft = int(AMOUNT_FREE_MINTS)-int(ts);
    require(SUPPLY_CAP>= supplyCap);
    if(ts>= AMOUNT_FREE_MINTS ){
      require(amount<=MAX_PER_TX_PUBLIC);
      require(msg.value >= amount * MINT_PRICE);
    }else {require(amount<= MAX_PER_TX_FREE);}
    if(freeMintLeft<=int(amount) && freeMintLeft > 0 ){
      require(amount<=MAX_PER_TX_FREE);
      require(msg.value >= uint256(amount-uint256(freeMintLeft) )* MINT_PRICE);
    } if(freeMintLeft>= int(amount)){
    require(amount<=MAX_PER_TX_FREE);
  }


    _safeMint(msg.sender, amount);

  }
  function changeSaleState( ) external onlyOwner{
    saleOpen= !saleOpen;
  }
  function setMetadata(string memory baseURI) external onlyOwner {
    metadataBase = baseURI;
  }
  function _baseURI() internal view override returns(string memory ){
    return metadataBase;
  }

  function reduceDevReserve(uint newReserveAmount) external onlyOwner{
    require(newReserveAmount< DEV_MINT_RESERVE,"CANT INCREASE DEV MINT RESERVE");

    DEV_MINT_RESERVE = newReserveAmount;
  }
  function devMint(uint amount) external onlyOwner{
    require(amount + DEV_MINT_MINTED <= DEV_MINT_RESERVE);
    DEV_MINT_MINTED+=amount;
    _safeMint(msg.sender,amount);
  }
  function withdraw() external onlyOwner {
    uint256 totalBalance = address(this).balance;
    uint256 DEV_CUT = totalBalance / 100 * 16;
    uint256 MANAGING = totalBalance / 100 * 15;
    uint256 ARTIST = totalBalance / 100 * 15;
    uint256 COMMUNITY_MANAGER = totalBalance / 100 * 15;
    uint256 MARKETING = totalBalance / 100 * 15;
    uint256 SECONDARY_ARTIST = totalBalance / 100 * 10;
    uint256 LEGAL = totalBalance / 100 * 7;
    uint256 PARTNERSHIP = totalBalance / 100 * 7;
    payable(DEV_ADDRESS).transfer(DEV_CUT);
    payable(MANAGING_ADDR).transfer(MANAGING);
    payable(ARTIST_ADDR).transfer(ARTIST);
    payable(COMMUNITY_MANAGER_ADDR).transfer(COMMUNITY_MANAGER);
    payable(MARKETING_ADDR).transfer(MARKETING);
    payable(SECONDARY_ARTIST_ADDR).transfer(SECONDARY_ARTIST);
    payable(LEGAL_ADDR).transfer(LEGAL);
    payable(PARTNERSHIP_ADDR).transfer(PARTNERSHIP);


  }
}

// File: contracts/Ownable.sol



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

pragma solidity ^0.8.0;

import "./Context.sol";

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

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

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

  /**
   * @dev Throws if called by any account other than the owner.
     */
  modifier onlyOwner() {
    _checkOwner();
    _;
  }

  /**
   * @dev Returns the address of the current owner.
     */
  function owner() public view virtual returns (address) {
    return _owner;
  }

  /**
   * @dev Throws if the sender is not the owner.
     */
  function _checkOwner() internal view virtual {
    require(owner() == _msgSender(), "Ownable: caller is not the owner");
  }

  /**
   * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
  function renounceOwnership() public virtual onlyOwner {
    _transferOwnership(address(0));
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
  function transferOwnership(address newOwner) public virtual onlyOwner {
    require(newOwner != address(0), "Ownable: new owner is the zero address");
    _transferOwnership(newOwner);
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
  function _transferOwnership(address newOwner) internal virtual {
    address oldOwner = _owner;
    _owner = newOwner;
    emit OwnershipTransferred(oldOwner, newOwner);
  }
}

// File: contracts/ERC721A.sol



// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.1.0
// Creator: Chiru Labs

pragma solidity ^0.8.7;

import './IERC721A.sol';

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

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard,
 * including the Metadata extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at `_startTokenId()`
 * (defaults to 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**256 - 1 (max value of uint256).
 */
contract ERC721A is IERC721A {
  // Mask of an entry in packed address data.
  uint256 private constant BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;

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

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

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

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

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

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

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

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

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

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

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

  // The maximum `quantity` that can be minted with `_mintERC2309`.
  // This limit is to prevent overflows on the address data entries.
  // For a limit of 5000, a total of 3.689e15 calls to `_mintERC2309`
  // is required to cause an overflow, which is unrealistic.
  uint256 private constant MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;

  string public metadataBase = "https://gloomz.io/metadata/";
  // The tokenId of the next token to be minted.
  uint256 private _currentIndex;

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

  // Token name
  string private _name;

  // Token symbol
  string private _symbol;

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

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

  // Mapping from token ID to approved address.
  mapping(uint256 => 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_;
    _currentIndex = _startTokenId();
  }

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

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

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

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

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

  /**
   * @dev See {IERC165-supportsInterface}.
     */
  function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
    // The interface IDs are constants representing the first 4 bytes of the XOR of
    // all function selectors in the interface. See: https://eips.ethereum.org/EIPS/eip-165
    // e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`
    return
    interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
    interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
    interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
  }

  /**
   * @dev See {IERC721-balanceOf}.
     */
  function balanceOf(address owner) public view override returns (uint256) {
    if (owner == address(0)) revert BalanceQueryForZeroAddress();
    return _packedAddressData[owner] & BITMASK_ADDRESS_DATA_ENTRY;
  }

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

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

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

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

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

  unchecked {
    if (_startTokenId() <= curr)
      if (curr < _currentIndex) {
        uint256 packed = _packedOwnerships[curr];
        // If not burned.
        if (packed & BITMASK_BURNED == 0) {
          // Invariant:
          // There will always be an 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.
          //
          // We can directly compare the packed value.
          // If the address is zero, packed is zero.
          while (packed == 0) {
            packed = _packedOwnerships[--curr];
          }
          return packed;
        }
      }
  }
    revert OwnerQueryForNonexistentToken();
  }

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

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

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

  /**
   * 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) {
    return _unpackedOwnership(_packedOwnershipOf(tokenId));
  }

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

  /**
   * @dev See {IERC721-ownerOf}.
     */
  function ownerOf(uint256 tokenId) public view override returns (address) {
    return address(uint160(_packedOwnershipOf(tokenId)));
  }

  /**
   * @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, _toString(tokenId),'.json')) : '';
  }

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

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

  /**
   * @dev See {IERC721-approve}.
     */
  function approve(address to, uint256 tokenId) public override {
    address owner = ownerOf(tokenId);

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

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

  /**
   * @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 virtual override {
    if (operator == _msgSenderERC721A()) revert ApproveToCaller();

    _operatorApprovals[_msgSenderERC721A()][operator] = approved;
    emit ApprovalForAll(_msgSenderERC721A(), 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-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 {
    transferFrom(from, to, tokenId);
    if (to.code.length != 0)
      if (!_checkContractOnERC721Received(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
    _startTokenId() <= tokenId &&
    tokenId < _currentIndex && // If within bounds,
    _packedOwnerships[tokenId] & BITMASK_BURNED == 0; // and not burned.
  }

  /**
   * @dev Equivalent to `_safeMint(to, quantity, '')`.
     */
  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.
     *
     * See {_mint}.
     *
     * Emits a {Transfer} event for each mint.
     */
  function _safeMint(
    address to,
    uint256 quantity,
    bytes memory _data
  ) internal {
    _mint(to, quantity);

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

  /**
   * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event for each mint.
     */
  function _mint(address to, uint256 quantity) internal {
    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` and `numberMinted` have a maximum limit of 2**64.
    // `tokenId` has a maximum limit of 2**256.
  unchecked {
    // Updates:
    // - `balance += quantity`.
    // - `numberMinted += quantity`.
    //
    // We can directly add to the `balance` and `numberMinted`.
    _packedAddressData[to] += quantity * ((1 << BITPOS_NUMBER_MINTED) | 1);

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

    uint256 tokenId = startTokenId;
    uint256 end = startTokenId + quantity;
    do {
      emit Transfer(address(0), to, tokenId++);
    } while (tokenId < end);

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

  /**
   * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * This function is intended for efficient minting only during contract creation.
     *
     * It emits only one {ConsecutiveTransfer} as defined in
     * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),
     * instead of a sequence of {Transfer} event(s).
     *
     * Calling this function outside of contract creation WILL make your contract
     * non-compliant with the ERC721 standard.
     * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309
     * {ConsecutiveTransfer} event is only permissible during contract creation.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {ConsecutiveTransfer} event.
     */
  function _mintERC2309(address to, uint256 quantity) internal {
    uint256 startTokenId = _currentIndex;
    if (to == address(0)) revert MintToZeroAddress();
    if (quantity == 0) revert MintZeroQuantity();
    if (quantity > MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit();

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

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

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

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

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

  /**
   * @dev Returns the storage slot and value for the approved address of `tokenId`.
     */
  function _getApprovedAddress(uint256 tokenId)
  private
  view
  returns (uint256 approvedAddressSlot, address approvedAddress)
  {
    mapping(uint256 => address) storage tokenApprovalsPtr = _tokenApprovals;
    // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId]`.
    assembly {
    // Compute the slot.
      mstore(0x00, tokenId)
      mstore(0x20, tokenApprovalsPtr.slot)
      approvedAddressSlot := keccak256(0x00, 0x40)
    // Load the slot's value from storage.
      approvedAddress := sload(approvedAddressSlot)
    }
  }

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

  /**
   * @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 transferFrom(
    address from,
    address to,
    uint256 tokenId
  ) public virtual override {
    uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

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

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

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

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

    _beforeTokenTransfers(from, to, tokenId, 1);

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

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

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

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

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

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

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

    address from = address(uint160(prevOwnershipPacked));

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

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

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

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

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

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

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

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

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

  /**
   * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target 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 _checkContractOnERC721Received(
    address from,
    address to,
    uint256 tokenId,
    bytes memory _data
  ) private returns (bool) {
    try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (
      bytes4 retval
    ) {
      return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector;
    } catch (bytes memory reason) {
      if (reason.length == 0) {
        revert TransferToNonERC721ReceiverImplementer();
      } else {
        assembly {
          revert(add(32, reason), mload(reason))
        }
      }
    }
  }

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

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

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

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

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

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

  /**
   * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
  function _toString(uint256 value) internal pure returns (string memory ptr) {
    assembly {
    // The maximum value of a uint256 contains 78 digits (1 byte per digit),
    // but we allocate 128 bytes to keep the free memory pointer 32-byte word aliged.
    // We will need 1 32-byte word to store the length,
    // and 3 32-byte words to store a maximum of 78 digits. Total: 32 + 3 * 32 = 128.
      ptr := add(mload(0x40), 128)
    // Update the free memory pointer to allocate.
      mstore(0x40, ptr)

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

    // We write the string from the rightmost digit to the leftmost digit.
    // The following is essentially a do-while loop that also handles the zero case.
    // Costs a bit more than early returning for the zero case,
    // but cheaper in terms of deployment and overall runtime costs.
      for {
      // Initialize and perform the first pass without check.
        let temp := value
      // Move the pointer 1 byte leftwards to point to an empty character slot.
        ptr := sub(ptr, 1)
      // Write the character to the pointer. 48 is the ASCII index of '0'.
        mstore8(ptr, add(48, mod(temp, 10)))
        temp := div(temp, 10)
      } temp {
      // Keep dividing `temp` until zero.
        temp := div(temp, 10)
      } {
      // Body of the for loop.
        ptr := sub(ptr, 1)
        mstore8(ptr, add(48, mod(temp, 10)))
      }

      let length := sub(end, ptr)
    // Move the pointer 32 bytes leftwards to make room for the length.
      ptr := sub(ptr, 32)
    // Store the length.
      mstore(ptr, length)
    }
  }
}

// File: contracts/Context.sol



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

pragma solidity ^0.8.0;

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

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

// File: contracts/IERC721A.sol



// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.1.0
// Creator: Chiru Labs

pragma solidity ^0.8.7;

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

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

  /**
   * The caller cannot approve to their own address.
   */
  error ApproveToCaller();

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

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

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

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

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

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

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

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

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

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

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

  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;
    // Arbitrary data similar to `startTimestamp` that can be set through `_extraData`.
    uint24 extraData;
  }

  /**
   * @dev Returns the total amount of tokens stored by the contract.
     *
     * Burned tokens are calculated here, use `_totalMinted()` if you want to count just minted tokens.
     */
  function totalSupply() external view returns (uint256);

  // ==============================
  //            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);

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

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

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

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

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

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

  /**
   * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * 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;

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

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

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

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

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

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

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

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

  /**
   * @dev Emitted when tokens in `fromTokenId` to `toTokenId` (inclusive) is transferred from `from` to `to`,
     * as defined in the ERC2309 standard. See `_mintERC2309` for more details.
     */
  event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}