{"Address.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize, which returns 0 for contracts in\n        // construction, since the code is only stored at the end of the\n        // constructor execution.\n\n        uint256 size;\n        assembly {\n            size := extcodesize(account)\n        }\n        return size \u003e 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity\u0027s `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance \u003e= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCall(target, data, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance \u003e= value, \"Address: insufficient balance for call\");\n        require(isContract(target), \"Address: call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return _verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        require(isContract(target), \"Address: static call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return _verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(isContract(target), \"Address: delegate call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return _verifyCallResult(success, returndata, errorMessage);\n    }\n\n    function _verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) private pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            // Look for revert reason and bubble it up if present\n            if (returndata.length \u003e 0) {\n                // The easiest way to bubble the revert reason is using memory via assembly\n\n                assembly {\n                    let returndata_size := mload(returndata)\n                    revert(add(32, returndata), returndata_size)\n                }\n            } else {\n                revert(errorMessage);\n            }\n        }\n    }\n}"},"BrokenApeCouchClub.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./Ownable.sol\";\nimport \"./ReentrancyGuard.sol\";\nimport \"./ERC721A.sol\";\nimport \"./Strings.sol\";\n\ncontract BrokenApeCouchClub is Ownable, ERC721A, ReentrancyGuard {\n  uint256 public immutable maxPerAddressDuringMint;\n  uint256 public immutable amountForDevs;\n  uint256 public immutable amountForAllowList;\n\n  struct SaleConfig {\n    uint32 allowStartTime;\n    uint32 publicSaleStartTime;\n    uint64 allowPrice;\n    uint64 publicPrice;\n  }\n\n  SaleConfig public saleConfig;\n\n  mapping(address =\u003e uint256) public allowlist;\n\n  constructor(\n    string memory name_,\n    string memory symbol_,\n    uint256 maxBatchSize_, \n    uint256 collectionSize_, \n    uint256 amountForAllows_, \n    uint256 amountForDevs_ \n  ) ERC721A(name_, symbol_, maxBatchSize_, collectionSize_) {\n    maxPerAddressDuringMint = maxBatchSize_;\n    amountForDevs = amountForDevs_;\n    amountForAllowList = amountForAllows_;\n    require(\n      amountForAllows_ + amountForDevs_ \u003c= collectionSize_,\n      \"larger collection size needed\"\n    );\n  }\n\n  modifier callerIsUser() {\n    require(tx.origin == msg.sender, \"The caller is another contract\");\n    _;\n  }\n\n  function publicSaleMint(uint256 quantity) external payable callerIsUser {\n    uint256 _saleStartTime = uint256(saleConfig.publicSaleStartTime);\n    require(\n      _saleStartTime != 0 \u0026\u0026 block.timestamp \u003e= _saleStartTime,\n      \"sale has not started yet\"\n    );\n    require(\n      totalSupply() + quantity \u003c= collectionSize,\n      \"not enough remaining reserved\"\n    );\n    require(\n      numberMinted(msg.sender) + quantity \u003c= maxPerAddressDuringMint,\n      \"can not mint this many\"\n    );\n    uint256 totalCost = saleConfig.publicPrice * quantity;\n    _safeMint(msg.sender, quantity);\n    refundIfOver(totalCost);\n  }\n\n  function allowlistMint() external payable callerIsUser {\n    uint256 price = uint256(saleConfig.allowPrice);\n    uint256 _allowStartTime = uint256(saleConfig.allowStartTime);\n    require(\n      _allowStartTime != 0 \u0026\u0026 block.timestamp \u003e= _allowStartTime,\n      \"sale has not started yet\"\n    );\n    require(\n      numberMinted(msg.sender) + 1 \u003c= maxPerAddressDuringMint,\n      \"can not mint this many\"\n    );\n    require(price != 0, \"allowlist sale has not begun yet\");\n    require(allowlist[msg.sender] \u003e 0, \"not eligible for allowlist mint\");\n    require(\n      totalSupply() + 1 \u003c= collectionSize,\n      \"reached max supply\"\n    );\n    allowlist[msg.sender]--;\n    _safeMint(msg.sender, 1);\n    refundIfOver(price);\n  }\n\n  function refundIfOver(uint256 price) private {\n    require(msg.value \u003e= price, \"Need to send more ETH.\");\n    if (msg.value \u003e price) {\n      payable(msg.sender).transfer(msg.value - price);\n    }\n  }\n\n  function isPublicSaleOn(\n    uint256 publicPriceWei,\n    uint256 publicSaleStartTime\n  ) public view returns (bool) {\n    return\n      publicPriceWei != 0 \u0026\u0026\n      block.timestamp \u003e= publicSaleStartTime;\n  }\n\n  function setPublicSaleConfig(uint32 timestamp, uint64 price) external onlyOwner {\n    saleConfig.publicSaleStartTime = timestamp;\n    saleConfig.publicPrice = price;\n  }\n\n  function setAllowSaleConfig(uint32 timestamp, uint64 price) external onlyOwner {\n    saleConfig.allowStartTime = timestamp;\n    saleConfig.allowPrice = price;\n  }\n\n  function seedAllowlist(address[] memory addresses, uint256[] memory numSlots)\n    external\n    onlyOwner\n  {\n    require(\n      addresses.length == numSlots.length,\n      \"addresses does not match numSlots length\"\n    );\n    for (uint256 i = 0; i \u003c addresses.length; i++) {\n      allowlist[addresses[i]] = numSlots[i];\n    }\n  }\n\n  // For marketing etc.\n  function devMint(uint256 quantity) external onlyOwner {\n    require(\n      totalSupply() + quantity \u003c= amountForDevs,\n      \"too many already minted before dev mint\"\n    );\n    require(\n      quantity \u003c= 10,\n      \"only less than 10 a minter can mint at a time\"\n    );\n    uint256 numChunks = quantity / maxBatchSize;\n    for (uint256 i = 0; i \u003c numChunks; i++) {\n      _safeMint(msg.sender, maxBatchSize);\n    }\n  }\n\n  // // metadata URI\n  string private _baseTokenURI;\n\n  function _baseURI() internal view virtual override returns (string memory) {\n    return _baseTokenURI;\n  }\n\n  function setBaseURI(string calldata baseURI) external onlyOwner {\n    _baseTokenURI = baseURI;\n  }\n\n  function withdrawMoney(address payee) external onlyOwner nonReentrant {\n    (bool success, ) = payable(payee).call{value: address(this).balance}(\"\");\n    require(success, \"Transfer failed.\");\n  }\n\n  function setOwnersExplicit(uint256 quantity) external onlyOwner nonReentrant {\n    _setOwnersExplicit(quantity);\n  }\n\n  function numberMinted(address owner) public view returns (uint256) {\n    return _numberMinted(owner);\n  }\n\n  function getCollectionSize() public view returns (uint256) {\n    return collectionSize;\n  }\n\n  function getOwnershipData(uint256 tokenId)\n    external\n    view\n    returns (TokenOwnership memory)\n  {\n    return ownershipOf(tokenId);\n  }\n\n  function destroyContact() external onlyOwner{\n    selfdestruct(payable(msg.sender));\n  }    \n}\n"},"Context.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/*\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}"},"ERC165.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IERC165).interfaceId;\n    }\n}"},"ERC721A.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./IERC721Metadata.sol\";\nimport \"./IERC721Enumerable.sol\";\nimport \"./Address.sol\";\nimport \"./Context.sol\";\nimport \"./Strings.sol\";\nimport \"./ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.\n *\n * Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).\n *\n * Assumes the number of issuable tokens (collection size) is capped and fits in a uint128.\n *\n * Does not support burning tokens to address(0).\n */\ncontract ERC721A is\n  Context,\n  ERC165,\n  IERC721,\n  IERC721Metadata,\n  IERC721Enumerable\n{\n  using Address for address;\n  using Strings for uint256;\n\n  struct TokenOwnership {\n    address addr;\n    uint64 startTimestamp;\n  }\n\n  struct AddressData {\n    uint128 balance;\n    uint128 numberMinted;\n  }\n\n  uint256 private currentIndex = 0;\n\n  uint256 internal immutable collectionSize;\n  uint256 internal immutable maxBatchSize;\n\n  // Token name\n  string private _name;\n\n  // Token symbol\n  string private _symbol;\n\n  // Mapping from token ID to ownership details\n  // An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.\n  mapping(uint256 =\u003e TokenOwnership) private _ownerships;\n\n  // Mapping owner address to address data\n  mapping(address =\u003e AddressData) private _addressData;\n\n  // Mapping from token ID to approved address\n  mapping(uint256 =\u003e address) private _tokenApprovals;\n\n  // Mapping from owner to operator approvals\n  mapping(address =\u003e mapping(address =\u003e bool)) private _operatorApprovals;\n\n  /**\n   * @dev\n   * `maxBatchSize` refers to how much a minter can mint at a time.\n   * `collectionSize_` refers to how many tokens are in the collection.\n   */\n  constructor(\n    string memory name_,\n    string memory symbol_,\n    uint256 maxBatchSize_,\n    uint256 collectionSize_\n  ) {\n    require(\n      collectionSize_ \u003e 0,\n      \"ERC721A: collection must have a nonzero supply\"\n    );\n    require(maxBatchSize_ \u003e 0, \"ERC721A: max batch size must be nonzero\");\n    _name = name_;\n    _symbol = symbol_;\n    maxBatchSize = maxBatchSize_;\n    collectionSize = collectionSize_;\n  }\n\n  /**\n   * @dev See {IERC721Enumerable-totalSupply}.\n   */\n  function totalSupply() public view override returns (uint256) {\n    return currentIndex;\n  }\n\n  /**\n   * @dev See {IERC721Enumerable-tokenByIndex}.\n   */\n  function tokenByIndex(uint256 index) public view override returns (uint256) {\n    require(index \u003c totalSupply(), \"ERC721A: global index out of bounds\");\n    return index;\n  }\n\n  /**\n   * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.\n   * This read function is O(collectionSize). If calling from a separate contract, be sure to test gas first.\n   * It may also degrade with extremely large collection sizes (e.g \u003e\u003e 10000), test for your use case.\n   */\n  function tokenOfOwnerByIndex(address owner, uint256 index)\n    public\n    view\n    override\n    returns (uint256)\n  {\n    require(index \u003c balanceOf(owner), \"ERC721A: owner index out of bounds\");\n    uint256 numMintedSoFar = totalSupply();\n    uint256 tokenIdsIdx = 0;\n    address currOwnershipAddr = address(0);\n    for (uint256 i = 0; i \u003c numMintedSoFar; i++) {\n      TokenOwnership memory ownership = _ownerships[i];\n      if (ownership.addr != address(0)) {\n        currOwnershipAddr = ownership.addr;\n      }\n      if (currOwnershipAddr == owner) {\n        if (tokenIdsIdx == index) {\n          return i;\n        }\n        tokenIdsIdx++;\n      }\n    }\n    revert(\"ERC721A: unable to get token of owner by index\");\n  }\n\n  /**\n   * @dev See {IERC165-supportsInterface}.\n   */\n  function supportsInterface(bytes4 interfaceId)\n    public\n    view\n    virtual\n    override(ERC165, IERC165)\n    returns (bool)\n  {\n    return\n      interfaceId == type(IERC721).interfaceId ||\n      interfaceId == type(IERC721Metadata).interfaceId ||\n      interfaceId == type(IERC721Enumerable).interfaceId ||\n      super.supportsInterface(interfaceId);\n  }\n\n  /**\n   * @dev See {IERC721-balanceOf}.\n   */\n  function balanceOf(address owner) public view override returns (uint256) {\n    require(owner != address(0), \"ERC721A: balance query for the zero address\");\n    return uint256(_addressData[owner].balance);\n  }\n\n  function _numberMinted(address owner) internal view returns (uint256) {\n    require(\n      owner != address(0),\n      \"ERC721A: number minted query for the zero address\"\n    );\n    return uint256(_addressData[owner].numberMinted);\n  }\n\n  function ownershipOf(uint256 tokenId)\n    internal\n    view\n    returns (TokenOwnership memory)\n  {\n    require(_exists(tokenId), \"ERC721A: owner query for nonexistent token\");\n\n    uint256 lowestTokenToCheck;\n    if (tokenId \u003e= maxBatchSize) {\n      lowestTokenToCheck = tokenId - maxBatchSize + 1;\n    }\n\n    for (uint256 curr = tokenId; curr \u003e= lowestTokenToCheck; curr--) {\n      TokenOwnership memory ownership = _ownerships[curr];\n      if (ownership.addr != address(0)) {\n        return ownership;\n      }\n    }\n\n    revert(\"ERC721A: unable to determine the owner of token\");\n  }\n\n  /**\n   * @dev See {IERC721-ownerOf}.\n   */\n  function ownerOf(uint256 tokenId) public view override returns (address) {\n    return ownershipOf(tokenId).addr;\n  }\n\n  /**\n   * @dev See {IERC721Metadata-name}.\n   */\n  function name() public view virtual override returns (string memory) {\n    return _name;\n  }\n\n  /**\n   * @dev See {IERC721Metadata-symbol}.\n   */\n  function symbol() public view virtual override returns (string memory) {\n    return _symbol;\n  }\n\n  /**\n   * @dev See {IERC721Metadata-tokenURI}.\n   */\n  function tokenURI(uint256 tokenId)\n    public\n    view\n    virtual\n    override\n    returns (string memory)\n  {\n    require(\n      _exists(tokenId),\n      \"ERC721Metadata: URI query for nonexistent token\"\n    );\n\n    string memory baseURI = _baseURI();\n    return\n      bytes(baseURI).length \u003e 0\n        ? string(abi.encodePacked(baseURI, tokenId.toString()))\n        : \"\";\n  }\n\n  /**\n   * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n   * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n   * by default, can be overriden in child contracts.\n   */\n  function _baseURI() internal view virtual returns (string memory) {\n    return \"\";\n  }\n\n  /**\n   * @dev See {IERC721-approve}.\n   */\n  function approve(address to, uint256 tokenId) public override {\n    address owner = ERC721A.ownerOf(tokenId);\n    require(to != owner, \"ERC721A: approval to current owner\");\n\n    require(\n      _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n      \"ERC721A: approve caller is not owner nor approved for all\"\n    );\n\n    _approve(to, tokenId, owner);\n  }\n\n  /**\n   * @dev See {IERC721-getApproved}.\n   */\n  function getApproved(uint256 tokenId) public view override returns (address) {\n    require(_exists(tokenId), \"ERC721A: approved query for nonexistent token\");\n\n    return _tokenApprovals[tokenId];\n  }\n\n  /**\n   * @dev See {IERC721-setApprovalForAll}.\n   */\n  function setApprovalForAll(address operator, bool approved) public override {\n    require(operator != _msgSender(), \"ERC721A: approve to caller\");\n\n    _operatorApprovals[_msgSender()][operator] = approved;\n    emit ApprovalForAll(_msgSender(), operator, approved);\n  }\n\n  /**\n   * @dev See {IERC721-isApprovedForAll}.\n   */\n  function isApprovedForAll(address owner, address operator)\n    public\n    view\n    virtual\n    override\n    returns (bool)\n  {\n    return _operatorApprovals[owner][operator];\n  }\n\n  /**\n   * @dev See {IERC721-transferFrom}.\n   */\n  function transferFrom(\n    address from,\n    address to,\n    uint256 tokenId\n  ) public override {\n    _transfer(from, to, tokenId);\n  }\n\n  /**\n   * @dev See {IERC721-safeTransferFrom}.\n   */\n  function safeTransferFrom(\n    address from,\n    address to,\n    uint256 tokenId\n  ) public override {\n    safeTransferFrom(from, to, tokenId, \"\");\n  }\n\n  /**\n   * @dev See {IERC721-safeTransferFrom}.\n   */\n  function safeTransferFrom(\n    address from,\n    address to,\n    uint256 tokenId,\n    bytes memory _data\n  ) public override {\n    _transfer(from, to, tokenId);\n    require(\n      _checkOnERC721Received(from, to, tokenId, _data),\n      \"ERC721A: transfer to non ERC721Receiver implementer\"\n    );\n  }\n\n  /**\n   * @dev Returns whether `tokenId` exists.\n   *\n   * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n   *\n   * Tokens start existing when they are minted (`_mint`),\n   */\n  function _exists(uint256 tokenId) internal view returns (bool) {\n    return tokenId \u003c currentIndex;\n  }\n\n  function _safeMint(address to, uint256 quantity) internal {\n    _safeMint(to, quantity, \"\");\n  }\n\n  /**\n   * @dev Mints `quantity` tokens and transfers them to `to`.\n   *\n   * Requirements:\n   *\n   * - there must be `quantity` tokens remaining unminted in the total collection.\n   * - `to` cannot be the zero address.\n   * - `quantity` cannot be larger than the max batch size.\n   *\n   * Emits a {Transfer} event.\n   */\n  function _safeMint(\n    address to,\n    uint256 quantity,\n    bytes memory _data\n  ) internal {\n    uint256 startTokenId = currentIndex;\n    require(to != address(0), \"ERC721A: mint to the zero address\");\n    // We know if the first token in the batch doesn\u0027t exist, the other ones don\u0027t as well, because of serial ordering.\n    require(!_exists(startTokenId), \"ERC721A: token already minted\");\n    require(quantity \u003c= maxBatchSize, \"ERC721A: quantity to mint too high\");\n\n    _beforeTokenTransfers(address(0), to, startTokenId, quantity);\n\n    AddressData memory addressData = _addressData[to];\n    _addressData[to] = AddressData(\n      addressData.balance + uint128(quantity),\n      addressData.numberMinted + uint128(quantity)\n    );\n    _ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));\n\n    uint256 updatedIndex = startTokenId;\n\n    for (uint256 i = 0; i \u003c quantity; i++) {\n      emit Transfer(address(0), to, updatedIndex);\n      require(\n        _checkOnERC721Received(address(0), to, updatedIndex, _data),\n        \"ERC721A: transfer to non ERC721Receiver implementer\"\n      );\n      updatedIndex++;\n    }\n\n    currentIndex = updatedIndex;\n    _afterTokenTransfers(address(0), to, startTokenId, quantity);\n  }\n\n  /**\n   * @dev Transfers `tokenId` from `from` to `to`.\n   *\n   * Requirements:\n   *\n   * - `to` cannot be the zero address.\n   * - `tokenId` token must be owned by `from`.\n   *\n   * Emits a {Transfer} event.\n   */\n  function _transfer(\n    address from,\n    address to,\n    uint256 tokenId\n  ) private {\n    TokenOwnership memory prevOwnership = ownershipOf(tokenId);\n\n    bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||\n      getApproved(tokenId) == _msgSender() ||\n      isApprovedForAll(prevOwnership.addr, _msgSender()));\n\n    require(\n      isApprovedOrOwner,\n      \"ERC721A: transfer caller is not owner nor approved\"\n    );\n\n    require(\n      prevOwnership.addr == from,\n      \"ERC721A: transfer from incorrect owner\"\n    );\n    require(to != address(0), \"ERC721A: transfer to the zero address\");\n\n    _beforeTokenTransfers(from, to, tokenId, 1);\n\n    // Clear approvals from the previous owner\n    _approve(address(0), tokenId, prevOwnership.addr);\n\n    _addressData[from].balance -= 1;\n    _addressData[to].balance += 1;\n    _ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));\n\n    // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.\n    // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.\n    uint256 nextTokenId = tokenId + 1;\n    if (_ownerships[nextTokenId].addr == address(0)) {\n      if (_exists(nextTokenId)) {\n        _ownerships[nextTokenId] = TokenOwnership(\n          prevOwnership.addr,\n          prevOwnership.startTimestamp\n        );\n      }\n    }\n\n    emit Transfer(from, to, tokenId);\n    _afterTokenTransfers(from, to, tokenId, 1);\n  }\n\n  /**\n   * @dev Approve `to` to operate on `tokenId`\n   *\n   * Emits a {Approval} event.\n   */\n  function _approve(\n    address to,\n    uint256 tokenId,\n    address owner\n  ) private {\n    _tokenApprovals[tokenId] = to;\n    emit Approval(owner, to, tokenId);\n  }\n\n  uint256 public nextOwnerToExplicitlySet = 0;\n\n  /**\n   * @dev Explicitly set `owners` to eliminate loops in future calls of ownerOf().\n   */\n  function _setOwnersExplicit(uint256 quantity) internal {\n    uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet;\n    require(quantity \u003e 0, \"quantity must be nonzero\");\n    uint256 endIndex = oldNextOwnerToSet + quantity - 1;\n    if (endIndex \u003e collectionSize - 1) {\n      endIndex = collectionSize - 1;\n    }\n    // We know if the last one in the group exists, all in the group exist, due to serial ordering.\n    require(_exists(endIndex), \"not enough minted yet for this cleanup\");\n    for (uint256 i = oldNextOwnerToSet; i \u003c= endIndex; i++) {\n      if (_ownerships[i].addr == address(0)) {\n        TokenOwnership memory ownership = ownershipOf(i);\n        _ownerships[i] = TokenOwnership(\n          ownership.addr,\n          ownership.startTimestamp\n        );\n      }\n    }\n    nextOwnerToExplicitlySet = endIndex + 1;\n  }\n\n  /**\n   * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n   * The call is not executed if the target address is not a contract.\n   *\n   * @param from address representing the previous owner of the given token ID\n   * @param to target address that will receive the tokens\n   * @param tokenId uint256 ID of the token to be transferred\n   * @param _data bytes optional data to send along with the call\n   * @return bool whether the call correctly returned the expected magic value\n   */\n  function _checkOnERC721Received(\n    address from,\n    address to,\n    uint256 tokenId,\n    bytes memory _data\n  ) private returns (bool) {\n    if (to.isContract()) {\n      try\n        IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data)\n      returns (bytes4 retval) {\n        return retval == IERC721Receiver(to).onERC721Received.selector;\n      } catch (bytes memory reason) {\n        if (reason.length == 0) {\n          revert(\"ERC721A: transfer to non ERC721Receiver implementer\");\n        } else {\n          assembly {\n            revert(add(32, reason), mload(reason))\n          }\n        }\n      }\n    } else {\n      return true;\n    }\n  }\n\n  /**\n   * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.\n   *\n   * startTokenId - the first token id to be transferred\n   * quantity - the amount to be transferred\n   *\n   * Calling conditions:\n   *\n   * - When `from` and `to` are both non-zero, ``from``\u0027s `tokenId` will be\n   * transferred to `to`.\n   * - When `from` is zero, `tokenId` will be minted for `to`.\n   */\n  function _beforeTokenTransfers(\n    address from,\n    address to,\n    uint256 startTokenId,\n    uint256 quantity\n  ) internal virtual {}\n\n  /**\n   * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes\n   * minting.\n   *\n   * startTokenId - the first token id to be transferred\n   * quantity - the amount to be transferred\n   *\n   * Calling conditions:\n   *\n   * - when `from` and `to` are both non-zero.\n   * - `from` and `to` are never both zero.\n   */\n  function _afterTokenTransfers(\n    address from,\n    address to,\n    uint256 startTokenId,\n    uint256 quantity\n  ) internal virtual {}\n}"},"IERC165.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}"},"IERC721.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n    /**\n     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n    /**\n     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n     */\n    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n    /**\n     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n     */\n    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n    /**\n     * @dev Returns the number of tokens in ``owner``\u0027s account.\n     */\n    function balanceOf(address owner) external view returns (uint256 balance);\n\n    /**\n     * @dev Returns the owner of the `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function ownerOf(uint256 tokenId) external view returns (address owner);\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n     * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external;\n\n    /**\n     * @dev Transfers `tokenId` token from `from` to `to`.\n     *\n     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external;\n\n    /**\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n     * The approval is cleared when the token is transferred.\n     *\n     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n     *\n     * Requirements:\n     *\n     * - The caller must own the token or be an approved operator.\n     * - `tokenId` must exist.\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address to, uint256 tokenId) external;\n\n    /**\n     * @dev Returns the account approved for `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function getApproved(uint256 tokenId) external view returns (address operator);\n\n    /**\n     * @dev Approve or remove `operator` as an operator for the caller.\n     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n     *\n     * Requirements:\n     *\n     * - The `operator` cannot be the caller.\n     *\n     * Emits an {ApprovalForAll} event.\n     */\n    function setApprovalForAll(address operator, bool _approved) external;\n\n    /**\n     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n     *\n     * See {setApprovalForAll}\n     */\n    function isApprovedForAll(address owner, address operator) external view returns (bool);\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes calldata data\n    ) external;\n}"},"IERC721Enumerable.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Enumerable is IERC721 {\n    /**\n     * @dev Returns the total amount of tokens stored by the contract.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.\n     * Use along with {balanceOf} to enumerate all of ``owner``\u0027s tokens.\n     */\n    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);\n\n    /**\n     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.\n     * Use along with {totalSupply} to enumerate all tokens.\n     */\n    function tokenByIndex(uint256 index) external view returns (uint256);\n}"},"IERC721Metadata.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n    /**\n     * @dev Returns the token collection name.\n     */\n    function name() external view returns (string memory);\n\n    /**\n     * @dev Returns the token collection symbol.\n     */\n    function symbol() external view returns (string memory);\n\n    /**\n     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n     */\n    function tokenURI(uint256 tokenId) external view returns (string memory);\n}"},"IERC721Receiver.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n    /**\n     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n     * by `operator` from `from`, this function is called.\n     *\n     * It must return its Solidity selector to confirm the token transfer.\n     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n     *\n     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.\n     */\n    function onERC721Received(\n        address operator,\n        address from,\n        uint256 tokenId,\n        bytes calldata data\n    ) external returns (bytes4);\n}"},"Ownable.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _setOwner(_msgSender());\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n        _;\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _setOwner(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _setOwner(newOwner);\n    }\n\n    function _setOwner(address newOwner) private {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}"},"ReentrancyGuard.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuard {\n    // Booleans are more expensive than uint256 or any type that takes up a full\n    // word because each write operation emits an extra SLOAD to first read the\n    // slot\u0027s contents, replace the bits taken up by the boolean, and then write\n    // back. This is the compiler\u0027s defense against contract upgrades and\n    // pointer aliasing, and it cannot be disabled.\n\n    // The values being non-zero value makes deployment a bit more expensive,\n    // but in exchange the refund on every call to nonReentrant will be lower in\n    // amount. Since refunds are capped to a percentage of the total\n    // transaction\u0027s gas, it is best to keep them low in cases like this one, to\n    // increase the likelihood of the full refund coming into effect.\n    uint256 private constant _NOT_ENTERED = 1;\n    uint256 private constant _ENTERED = 2;\n\n    uint256 private _status;\n\n    constructor() {\n        _status = _NOT_ENTERED;\n    }\n\n    /**\n     * @dev Prevents a contract from calling itself, directly or indirectly.\n     * Calling a `nonReentrant` function from another `nonReentrant`\n     * function is not supported. It is possible to prevent this from happening\n     * by making the `nonReentrant` function external, and make it call a\n     * `private` function that does the actual work.\n     */\n    modifier nonReentrant() {\n        // On the first call to nonReentrant, _notEntered will be true\n        require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n        // Any calls to nonReentrant after this point will fail\n        _status = _ENTERED;\n\n        _;\n\n        // By storing the original value once again, a refund is triggered (see\n        // https://eips.ethereum.org/EIPS/eip-2200)\n        _status = _NOT_ENTERED;\n    }\n}"},"Strings.sol":{"content":"// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n    bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n     */\n    function toString(uint256 value) internal pure returns (string memory) {\n        // Inspired by OraclizeAPI\u0027s implementation - MIT licence\n        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n        if (value == 0) {\n            return \"0\";\n        }\n        uint256 temp = value;\n        uint256 digits;\n        while (temp != 0) {\n            digits++;\n            temp /= 10;\n        }\n        bytes memory buffer = new bytes(digits);\n        while (value != 0) {\n            digits -= 1;\n            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n            value /= 10;\n        }\n        return string(buffer);\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n     */\n    function toHexString(uint256 value) internal pure returns (string memory) {\n        if (value == 0) {\n            return \"0x00\";\n        }\n        uint256 temp = value;\n        uint256 length = 0;\n        while (temp != 0) {\n            length++;\n            temp \u003e\u003e= 8;\n        }\n        return toHexString(value, length);\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n     */\n    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n        bytes memory buffer = new bytes(2 * length + 2);\n        buffer[0] = \"0\";\n        buffer[1] = \"x\";\n        for (uint256 i = 2 * length + 1; i \u003e 1; --i) {\n            buffer[i] = _HEX_SYMBOLS[value \u0026 0xf];\n            value \u003e\u003e= 4;\n        }\n        require(value == 0, \"Strings: hex length insufficient\");\n        return string(buffer);\n    }\n}"}}