{"Address.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (utils/Address.sol)\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    /**\n     * @dev Tool to verifies that a low level call was successful, and revert if it wasn\u0027t, either by bubbling the\n     * revert reason using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal 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}\n"},"Context.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (utils/Context.sol)\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}\n"},"ERC1155.sol":{"content":"// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts v4.3.2 (token/ERC1155/ERC1155.sol)\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"./IERC1155.sol\";\r\nimport \"./IERC1155Receiver.sol\";\r\nimport \"./IERC1155MetadataURI.sol\";\r\nimport \"./Address.sol\";\r\nimport \"./Context.sol\";\r\nimport \"./ERC165.sol\";\r\n\r\n/**\r\n * @dev Implementation of the basic standard multi-token.\r\n * See https://eips.ethereum.org/EIPS/eip-1155\r\n * Originally based on code by Enjin: https://github.com/enjin/erc-1155\r\n *\r\n * _Available since v3.1._\r\n */\r\ncontract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {\r\n    using Address for address;\r\n\r\n    // Mapping from token ID to account balances\r\n    mapping(uint256 =\u003e mapping(address =\u003e uint256)) private _balances;\r\n\r\n    // Mapping from account to operator approvals\r\n    mapping(address =\u003e mapping(address =\u003e bool)) private _operatorApprovals;\r\n\r\n    // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json\r\n    string private _uri;\r\n\r\n    /**\r\n     * @dev See {_setURI}.\r\n     */\r\n    constructor(string memory uri_) {\r\n        _setURI(uri_);\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC165-supportsInterface}.\r\n     */\r\n    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\r\n        return\r\n            interfaceId == type(IERC1155).interfaceId ||\r\n            interfaceId == type(IERC1155MetadataURI).interfaceId ||\r\n            super.supportsInterface(interfaceId);\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC1155MetadataURI-uri}.\r\n     *\r\n     * This implementation returns the same URI for *all* token types. It relies\r\n     * on the token type ID substitution mechanism\r\n     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].\r\n     *\r\n     * Clients calling this function must replace the `\\{id\\}` substring with the\r\n     * actual token type ID.\r\n     */\r\n    function uri(uint256) public view virtual override returns (string memory) {\r\n        return _uri;\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC1155-balanceOf}.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `account` cannot be the zero address.\r\n     */\r\n    function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {\r\n        require(account != address(0), \"ERC1155: balance query for the zero address\");\r\n        return _balances[id][account];\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC1155-balanceOfBatch}.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `accounts` and `ids` must have the same length.\r\n     */\r\n    function balanceOfBatch(address[] memory accounts, uint256[] memory ids)\r\n        public\r\n        view\r\n        virtual\r\n        override\r\n        returns (uint256[] memory)\r\n    {\r\n        require(accounts.length == ids.length, \"ERC1155: accounts and ids length mismatch\");\r\n\r\n        uint256[] memory batchBalances = new uint256[](accounts.length);\r\n\r\n        for (uint256 i = 0; i \u003c accounts.length; ++i) {\r\n            batchBalances[i] = balanceOf(accounts[i], ids[i]);\r\n        }\r\n\r\n        return batchBalances;\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC1155-setApprovalForAll}.\r\n     */\r\n    function setApprovalForAll(address operator, bool approved) public virtual override {\r\n        _setApprovalForAll(_msgSender(), operator, approved);\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC1155-isApprovedForAll}.\r\n     */\r\n    function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {\r\n        return _operatorApprovals[account][operator];\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC1155-safeTransferFrom}.\r\n     */\r\n    function safeTransferFrom(\r\n        address from,\r\n        address to,\r\n        uint256 id,\r\n        uint256 amount,\r\n        bytes memory data\r\n    ) public virtual override {\r\n        require(\r\n            from == _msgSender() || isApprovedForAll(from, _msgSender()),\r\n            \"ERC1155: caller is not owner nor approved\"\r\n        );\r\n        _safeTransferFrom(from, to, id, amount, data);\r\n    }\r\n\r\n    /**\r\n     * @dev See {IERC1155-safeBatchTransferFrom}.\r\n     */\r\n    function safeBatchTransferFrom(\r\n        address from,\r\n        address to,\r\n        uint256[] memory ids,\r\n        uint256[] memory amounts,\r\n        bytes memory data\r\n    ) public virtual override {\r\n        require(\r\n            from == _msgSender() || isApprovedForAll(from, _msgSender()),\r\n            \"ERC1155: transfer caller is not owner nor approved\"\r\n        );\r\n        _safeBatchTransferFrom(from, to, ids, amounts, data);\r\n    }\r\n\r\n    /**\r\n     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.\r\n     *\r\n     * Emits a {TransferSingle} event.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `to` cannot be the zero address.\r\n     * - `from` must have a balance of tokens of type `id` of at least `amount`.\r\n     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the\r\n     * acceptance magic value.\r\n     */\r\n    function _safeTransferFrom(\r\n        address from,\r\n        address to,\r\n        uint256 id,\r\n        uint256 amount,\r\n        bytes memory data\r\n    ) internal virtual {\r\n        require(to != address(0), \"ERC1155: transfer to the zero address\");\r\n\r\n        address operator = _msgSender();\r\n\r\n        _beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);\r\n\r\n        uint256 fromBalance = _balances[id][from];\r\n        require(fromBalance \u003e= amount, \"ERC1155: insufficient balance for transfer\");\r\n        unchecked {\r\n            _balances[id][from] = fromBalance - amount;\r\n        }\r\n        _balances[id][to] += amount;\r\n\r\n        emit TransferSingle(operator, from, to, id, amount);\r\n\r\n        _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);\r\n    }\r\n\r\n    /**\r\n     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.\r\n     *\r\n     * Emits a {TransferBatch} event.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the\r\n     * acceptance magic value.\r\n     */\r\n    function _safeBatchTransferFrom(\r\n        address from,\r\n        address to,\r\n        uint256[] memory ids,\r\n        uint256[] memory amounts,\r\n        bytes memory data\r\n    ) internal virtual {\r\n        require(ids.length == amounts.length, \"ERC1155: ids and amounts length mismatch\");\r\n        require(to != address(0), \"ERC1155: transfer to the zero address\");\r\n\r\n        address operator = _msgSender();\r\n\r\n        _beforeTokenTransfer(operator, from, to, ids, amounts, data);\r\n\r\n        for (uint256 i = 0; i \u003c ids.length; ++i) {\r\n            uint256 id = ids[i];\r\n            uint256 amount = amounts[i];\r\n\r\n            uint256 fromBalance = _balances[id][from];\r\n            require(fromBalance \u003e= amount, \"ERC1155: insufficient balance for transfer\");\r\n            unchecked {\r\n                _balances[id][from] = fromBalance - amount;\r\n            }\r\n            _balances[id][to] += amount;\r\n        }\r\n\r\n        emit TransferBatch(operator, from, to, ids, amounts);\r\n\r\n        _doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);\r\n    }\r\n\r\n    /**\r\n     * @dev Sets a new URI for all token types, by relying on the token type ID\r\n     * substitution mechanism\r\n     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].\r\n     *\r\n     * By this mechanism, any occurrence of the `\\{id\\}` substring in either the\r\n     * URI or any of the amounts in the JSON file at said URI will be replaced by\r\n     * clients with the token type ID.\r\n     *\r\n     * For example, the `https://token-cdn-domain/\\{id\\}.json` URI would be\r\n     * interpreted by clients as\r\n     * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`\r\n     * for token type ID 0x4cce0.\r\n     *\r\n     * See {uri}.\r\n     *\r\n     * Because these URIs cannot be meaningfully represented by the {URI} event,\r\n     * this function emits no events.\r\n     */\r\n    function _setURI(string memory newuri) internal virtual {\r\n        _uri = newuri;\r\n    }\r\n\r\n    /**\r\n     * @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.\r\n     *\r\n     * Emits a {TransferSingle} event.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `to` cannot be the zero address.\r\n     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the\r\n     * acceptance magic value.\r\n     */\r\n    function _mint(\r\n        address to,\r\n        uint256 id,\r\n        uint256 amount,\r\n        bytes memory data\r\n    ) internal virtual {\r\n        require(to != address(0), \"ERC1155: mint to the zero address\");\r\n\r\n        address operator = _msgSender();\r\n\r\n        _beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data);\r\n\r\n        _balances[id][to] += amount;\r\n        emit TransferSingle(operator, address(0), to, id, amount);\r\n\r\n        _doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);\r\n    }\r\n\r\n    /**\r\n     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `ids` and `amounts` must have the same length.\r\n     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the\r\n     * acceptance magic value.\r\n     */\r\n    function _mintBatch(\r\n        address to,\r\n        uint256[] memory ids,\r\n        uint256[] memory amounts,\r\n        bytes memory data\r\n    ) internal virtual {\r\n        require(to != address(0), \"ERC1155: mint to the zero address\");\r\n        require(ids.length == amounts.length, \"ERC1155: ids and amounts length mismatch\");\r\n\r\n        address operator = _msgSender();\r\n\r\n        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);\r\n\r\n        for (uint256 i = 0; i \u003c ids.length; i++) {\r\n            _balances[ids[i]][to] += amounts[i];\r\n        }\r\n\r\n        emit TransferBatch(operator, address(0), to, ids, amounts);\r\n\r\n        _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);\r\n    }\r\n\r\n    /**\r\n     * @dev Destroys `amount` tokens of token type `id` from `from`\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `from` cannot be the zero address.\r\n     * - `from` must have at least `amount` tokens of token type `id`.\r\n     */\r\n    function _burn(\r\n        address from,\r\n        uint256 id,\r\n        uint256 amount\r\n    ) internal virtual {\r\n        require(from != address(0), \"ERC1155: burn from the zero address\");\r\n\r\n        address operator = _msgSender();\r\n\r\n        _beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), \"\");\r\n\r\n        uint256 fromBalance = _balances[id][from];\r\n        require(fromBalance \u003e= amount, \"ERC1155: burn amount exceeds balance\");\r\n        unchecked {\r\n            _balances[id][from] = fromBalance - amount;\r\n        }\r\n\r\n        emit TransferSingle(operator, from, address(0), id, amount);\r\n    }\r\n\r\n    /**\r\n     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `ids` and `amounts` must have the same length.\r\n     */\r\n    function _burnBatch(\r\n        address from,\r\n        uint256[] memory ids,\r\n        uint256[] memory amounts\r\n    ) internal virtual {\r\n        require(from != address(0), \"ERC1155: burn from the zero address\");\r\n        require(ids.length == amounts.length, \"ERC1155: ids and amounts length mismatch\");\r\n\r\n        address operator = _msgSender();\r\n\r\n        _beforeTokenTransfer(operator, from, address(0), ids, amounts, \"\");\r\n\r\n        for (uint256 i = 0; i \u003c ids.length; i++) {\r\n            uint256 id = ids[i];\r\n            uint256 amount = amounts[i];\r\n\r\n            uint256 fromBalance = _balances[id][from];\r\n            require(fromBalance \u003e= amount, \"ERC1155: burn amount exceeds balance\");\r\n            unchecked {\r\n                _balances[id][from] = fromBalance - amount;\r\n            }\r\n        }\r\n\r\n        emit TransferBatch(operator, from, address(0), ids, amounts);\r\n    }\r\n\r\n    /**\r\n     * @dev Approve `operator` to operate on all of `owner` tokens\r\n     *\r\n     * Emits a {ApprovalForAll} event.\r\n     */\r\n    function _setApprovalForAll(\r\n        address owner,\r\n        address operator,\r\n        bool approved\r\n    ) internal virtual {\r\n        require(owner != operator, \"ERC1155: setting approval status for self\");\r\n        _operatorApprovals[owner][operator] = approved;\r\n        emit ApprovalForAll(owner, operator, approved);\r\n    }\r\n\r\n    /**\r\n     * @dev Hook that is called before any token transfer. This includes minting\r\n     * and burning, as well as batched variants.\r\n     *\r\n     * The same hook is called on both single and batched variants. For single\r\n     * transfers, the length of the `id` and `amount` arrays will be 1.\r\n     *\r\n     * Calling conditions (for each `id` and `amount` pair):\r\n     *\r\n     * - When `from` and `to` are both non-zero, `amount` of ``from``\u0027s tokens\r\n     * of token type `id` will be  transferred to `to`.\r\n     * - When `from` is zero, `amount` tokens of token type `id` will be minted\r\n     * for `to`.\r\n     * - when `to` is zero, `amount` of ``from``\u0027s tokens of token type `id`\r\n     * will be burned.\r\n     * - `from` and `to` are never both zero.\r\n     * - `ids` and `amounts` have the same, non-zero length.\r\n     *\r\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\r\n     */\r\n    function _beforeTokenTransfer(\r\n        address operator,\r\n        address from,\r\n        address to,\r\n        uint256[] memory ids,\r\n        uint256[] memory amounts,\r\n        bytes memory data\r\n    ) internal virtual {}\r\n\r\n    function _doSafeTransferAcceptanceCheck(\r\n        address operator,\r\n        address from,\r\n        address to,\r\n        uint256 id,\r\n        uint256 amount,\r\n        bytes memory data\r\n    ) private {\r\n        if (to.isContract()) {\r\n            try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {\r\n                if (response != IERC1155Receiver.onERC1155Received.selector) {\r\n                    revert(\"ERC1155: ERC1155Receiver rejected tokens\");\r\n                }\r\n            } catch Error(string memory reason) {\r\n                revert(reason);\r\n            } catch {\r\n                revert(\"ERC1155: transfer to non ERC1155Receiver implementer\");\r\n            }\r\n        }\r\n    }\r\n\r\n    function _doSafeBatchTransferAcceptanceCheck(\r\n        address operator,\r\n        address from,\r\n        address to,\r\n        uint256[] memory ids,\r\n        uint256[] memory amounts,\r\n        bytes memory data\r\n    ) private {\r\n        if (to.isContract()) {\r\n            try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (\r\n                bytes4 response\r\n            ) {\r\n                if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {\r\n                    revert(\"ERC1155: ERC1155Receiver rejected tokens\");\r\n                }\r\n            } catch Error(string memory reason) {\r\n                revert(reason);\r\n            } catch {\r\n                revert(\"ERC1155: transfer to non ERC1155Receiver implementer\");\r\n            }\r\n        }\r\n    }\r\n\r\n    function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {\r\n        uint256[] memory array = new uint256[](1);\r\n        array[0] = element;\r\n\r\n        return array;\r\n    }\r\n}\r\n"},"ERC1155Burnable.sol":{"content":"// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts v4.3.2 (token/ERC1155/extensions/ERC1155Burnable.sol)\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"./ERC1155.sol\";\r\n\r\n/**\r\n * @dev Extension of {ERC1155} that allows token holders to destroy both their\r\n * own tokens and those that they have been approved to use.\r\n *\r\n * _Available since v3.1._\r\n */\r\nabstract contract ERC1155Burnable is ERC1155 {\r\n    function burn(\r\n        address account,\r\n        uint256 id,\r\n        uint256 value\r\n    ) public virtual {\r\n        require(\r\n            account == _msgSender() || isApprovedForAll(account, _msgSender()),\r\n            \"ERC1155: caller is not owner nor approved\"\r\n        );\r\n\r\n        _burn(account, id, value);\r\n    }\r\n\r\n    function burnBatch(\r\n        address account,\r\n        uint256[] memory ids,\r\n        uint256[] memory values\r\n    ) public virtual {\r\n        require(\r\n            account == _msgSender() || isApprovedForAll(account, _msgSender()),\r\n            \"ERC1155: caller is not owner nor approved\"\r\n        );\r\n\r\n        _burnBatch(account, ids, values);\r\n    }\r\n}\r\n"},"ERC165.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (utils/introspection/ERC165.sol)\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}\n"},"ERC721.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./IERC721Metadata.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 extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n    using Address for address;\n    using Strings for uint256;\n\n    // Token name\n    string private _name;\n\n    // Token symbol\n    string private _symbol;\n\n    // Mapping from token ID to owner address\n    mapping(uint256 =\u003e address) private _owners;\n\n    // Mapping owner address to token count\n    mapping(address =\u003e uint256) private _balances;\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 Initializes the contract by setting a `name` and a `symbol` to the token collection.\n     */\n    constructor(string memory name_, string memory symbol_) {\n        _name = name_;\n        _symbol = symbol_;\n    }\n\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n        return\n            interfaceId == type(IERC721).interfaceId ||\n            interfaceId == type(IERC721Metadata).interfaceId ||\n            super.supportsInterface(interfaceId);\n    }\n\n    /**\n     * @dev See {IERC721-balanceOf}.\n     */\n    function balanceOf(address owner) public view virtual override returns (uint256) {\n        require(owner != address(0), \"ERC721: balance query for the zero address\");\n        return _balances[owner];\n    }\n\n    /**\n     * @dev See {IERC721-ownerOf}.\n     */\n    function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n        address owner = _owners[tokenId];\n        require(owner != address(0), \"ERC721: owner query for nonexistent token\");\n        return owner;\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) public view virtual override returns (string memory) {\n        require(_exists(tokenId), \"ERC721Metadata: URI query for nonexistent token\");\n\n        string memory baseURI = _baseURI();\n        return bytes(baseURI).length \u003e 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\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 virtual override {\n        address owner = ERC721.ownerOf(tokenId);\n        require(to != owner, \"ERC721: approval to current owner\");\n\n        require(\n            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n            \"ERC721: approve caller is not owner nor approved for all\"\n        );\n\n        _approve(to, tokenId);\n    }\n\n    /**\n     * @dev See {IERC721-getApproved}.\n     */\n    function getApproved(uint256 tokenId) public view virtual override returns (address) {\n        require(_exists(tokenId), \"ERC721: 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 virtual override {\n        _setApprovalForAll(_msgSender(), operator, approved);\n    }\n\n    /**\n     * @dev See {IERC721-isApprovedForAll}.\n     */\n    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\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 virtual override {\n        //solhint-disable-next-line max-line-length\n        require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: transfer caller is not owner nor approved\");\n\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 virtual 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 virtual override {\n        require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: transfer caller is not owner nor approved\");\n        _safeTransfer(from, to, tokenId, _data);\n    }\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     * `_data` is additional data, it has no specified format and it is sent in call to `to`.\n     *\n     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n     * implement alternative mechanisms to perform token transfer, such as signature-based.\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 `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 _safeTransfer(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) internal virtual {\n        _transfer(from, to, tokenId);\n        require(_checkOnERC721Received(from, to, tokenId, _data), \"ERC721: transfer to non ERC721Receiver implementer\");\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     * and stop existing when they are burned (`_burn`).\n     */\n    function _exists(uint256 tokenId) internal view virtual returns (bool) {\n        return _owners[tokenId] != address(0);\n    }\n\n    /**\n     * @dev Returns whether `spender` is allowed to manage `tokenId`.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n        require(_exists(tokenId), \"ERC721: operator query for nonexistent token\");\n        address owner = ERC721.ownerOf(tokenId);\n        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));\n    }\n\n    /**\n     * @dev Safely mints `tokenId` and transfers it to `to`.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must not exist.\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 _safeMint(address to, uint256 tokenId) internal virtual {\n        _safeMint(to, tokenId, \"\");\n    }\n\n    /**\n     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n     */\n    function _safeMint(\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) internal virtual {\n        _mint(to, tokenId);\n        require(\n            _checkOnERC721Received(address(0), to, tokenId, _data),\n            \"ERC721: transfer to non ERC721Receiver implementer\"\n        );\n    }\n\n    /**\n     * @dev Mints `tokenId` and transfers it to `to`.\n     *\n     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n     *\n     * Requirements:\n     *\n     * - `tokenId` must not exist.\n     * - `to` cannot be the zero address.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _mint(address to, uint256 tokenId) internal virtual {\n        require(to != address(0), \"ERC721: mint to the zero address\");\n        require(!_exists(tokenId), \"ERC721: token already minted\");\n\n        _beforeTokenTransfer(address(0), to, tokenId);\n\n        _balances[to] += 1;\n        _owners[tokenId] = to;\n\n        emit Transfer(address(0), to, tokenId);\n    }\n\n    /**\n     * @dev Destroys `tokenId`.\n     * The approval is cleared when the token is burned.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _burn(uint256 tokenId) internal virtual {\n        address owner = ERC721.ownerOf(tokenId);\n\n        _beforeTokenTransfer(owner, address(0), tokenId);\n\n        // Clear approvals\n        _approve(address(0), tokenId);\n\n        _balances[owner] -= 1;\n        delete _owners[tokenId];\n\n        emit Transfer(owner, address(0), tokenId);\n    }\n\n    /**\n     * @dev Transfers `tokenId` from `from` to `to`.\n     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\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    ) internal virtual {\n        require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer of token that is not own\");\n        require(to != address(0), \"ERC721: transfer to the zero address\");\n\n        _beforeTokenTransfer(from, to, tokenId);\n\n        // Clear approvals from the previous owner\n        _approve(address(0), tokenId);\n\n        _balances[from] -= 1;\n        _balances[to] += 1;\n        _owners[tokenId] = to;\n\n        emit Transfer(from, to, tokenId);\n    }\n\n    /**\n     * @dev Approve `to` to operate on `tokenId`\n     *\n     * Emits a {Approval} event.\n     */\n    function _approve(address to, uint256 tokenId) internal virtual {\n        _tokenApprovals[tokenId] = to;\n        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n    }\n\n    /**\n     * @dev Approve `operator` to operate on all of `owner` tokens\n     *\n     * Emits a {ApprovalForAll} event.\n     */\n    function _setApprovalForAll(\n        address owner,\n        address operator,\n        bool approved\n    ) internal virtual {\n        require(owner != operator, \"ERC721: approve to caller\");\n        _operatorApprovals[owner][operator] = approved;\n        emit ApprovalForAll(owner, operator, approved);\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 IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {\n                return retval == IERC721Receiver.onERC721Received.selector;\n            } catch (bytes memory reason) {\n                if (reason.length == 0) {\n                    revert(\"ERC721: 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 any token transfer. This includes minting\n     * and burning.\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     * - When `to` is zero, ``from``\u0027s `tokenId` will be burned.\n     * - `from` and `to` are never both zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _beforeTokenTransfer(\n        address from,\n        address to,\n        uint256 tokenId\n    ) internal virtual {}\n}\n"},"IERC1155.sol":{"content":"// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts v4.3.2 (token/ERC1155/IERC1155.sol)\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"./IERC165.sol\";\r\n\r\n/**\r\n * @dev Required interface of an ERC1155 compliant contract, as defined in the\r\n * https://eips.ethereum.org/EIPS/eip-1155[EIP].\r\n *\r\n * _Available since v3.1._\r\n */\r\ninterface IERC1155 is IERC165 {\r\n    /**\r\n     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.\r\n     */\r\n    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);\r\n\r\n    /**\r\n     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all\r\n     * transfers.\r\n     */\r\n    event TransferBatch(\r\n        address indexed operator,\r\n        address indexed from,\r\n        address indexed to,\r\n        uint256[] ids,\r\n        uint256[] values\r\n    );\r\n\r\n    /**\r\n     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to\r\n     * `approved`.\r\n     */\r\n    event ApprovalForAll(address indexed account, address indexed operator, bool approved);\r\n\r\n    /**\r\n     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.\r\n     *\r\n     * If an {URI} event was emitted for `id`, the standard\r\n     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value\r\n     * returned by {IERC1155MetadataURI-uri}.\r\n     */\r\n    event URI(string value, uint256 indexed id);\r\n\r\n    /**\r\n     * @dev Returns the amount of tokens of token type `id` owned by `account`.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `account` cannot be the zero address.\r\n     */\r\n    function balanceOf(address account, uint256 id) external view returns (uint256);\r\n\r\n    /**\r\n     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `accounts` and `ids` must have the same length.\r\n     */\r\n    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)\r\n        external\r\n        view\r\n        returns (uint256[] memory);\r\n\r\n    /**\r\n     * @dev Grants or revokes permission to `operator` to transfer the caller\u0027s tokens, according to `approved`,\r\n     *\r\n     * Emits an {ApprovalForAll} event.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `operator` cannot be the caller.\r\n     */\r\n    function setApprovalForAll(address operator, bool approved) external;\r\n\r\n    /**\r\n     * @dev Returns true if `operator` is approved to transfer ``account``\u0027s tokens.\r\n     *\r\n     * See {setApprovalForAll}.\r\n     */\r\n    function isApprovedForAll(address account, address operator) external view returns (bool);\r\n\r\n    /**\r\n     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.\r\n     *\r\n     * Emits a {TransferSingle} event.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `to` cannot be the zero address.\r\n     * - If the caller is not `from`, it must be have been approved to spend ``from``\u0027s tokens via {setApprovalForAll}.\r\n     * - `from` must have a balance of tokens of type `id` of at least `amount`.\r\n     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the\r\n     * acceptance magic value.\r\n     */\r\n    function safeTransferFrom(\r\n        address from,\r\n        address to,\r\n        uint256 id,\r\n        uint256 amount,\r\n        bytes calldata data\r\n    ) external;\r\n\r\n    /**\r\n     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.\r\n     *\r\n     * Emits a {TransferBatch} event.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `ids` and `amounts` must have the same length.\r\n     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the\r\n     * acceptance magic value.\r\n     */\r\n    function safeBatchTransferFrom(\r\n        address from,\r\n        address to,\r\n        uint256[] calldata ids,\r\n        uint256[] calldata amounts,\r\n        bytes calldata data\r\n    ) external;\r\n}\r\n"},"IERC1155MetadataURI.sol":{"content":"// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts v4.3.2 (token/ERC1155/extensions/IERC1155MetadataURI.sol)\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"./IERC1155.sol\";\r\n\r\n/**\r\n * @dev Interface of the optional ERC1155MetadataExtension interface, as defined\r\n * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].\r\n *\r\n * _Available since v3.1._\r\n */\r\ninterface IERC1155MetadataURI is IERC1155 {\r\n    /**\r\n     * @dev Returns the URI for token type `id`.\r\n     *\r\n     * If the `\\{id\\}` substring is present in the URI, it must be replaced by\r\n     * clients with the actual token type ID.\r\n     */\r\n    function uri(uint256 id) external view returns (string memory);\r\n}\r\n"},"IERC1155Receiver.sol":{"content":"// SPDX-License-Identifier: MIT\r\n// OpenZeppelin Contracts v4.3.2 (token/ERC1155/IERC1155Receiver.sol)\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"./IERC165.sol\";\r\n\r\n/**\r\n * @dev _Available since v3.1._\r\n */\r\ninterface IERC1155Receiver is IERC165 {\r\n    /**\r\n        @dev Handles the receipt of a single ERC1155 token type. This function is\r\n        called at the end of a `safeTransferFrom` after the balance has been updated.\r\n        To accept the transfer, this must return\r\n        `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))`\r\n        (i.e. 0xf23a6e61, or its own function selector).\r\n        @param operator The address which initiated the transfer (i.e. msg.sender)\r\n        @param from The address which previously owned the token\r\n        @param id The ID of the token being transferred\r\n        @param value The amount of tokens being transferred\r\n        @param data Additional data with no specified format\r\n        @return `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))` if transfer is allowed\r\n    */\r\n    function onERC1155Received(\r\n        address operator,\r\n        address from,\r\n        uint256 id,\r\n        uint256 value,\r\n        bytes calldata data\r\n    ) external returns (bytes4);\r\n\r\n    /**\r\n        @dev Handles the receipt of a multiple ERC1155 token types. This function\r\n        is called at the end of a `safeBatchTransferFrom` after the balances have\r\n        been updated. To accept the transfer(s), this must return\r\n        `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))`\r\n        (i.e. 0xbc197c81, or its own function selector).\r\n        @param operator The address which initiated the batch transfer (i.e. msg.sender)\r\n        @param from The address which previously owned the token\r\n        @param ids An array containing ids of each token being transferred (order and length must match values array)\r\n        @param values An array containing amounts of each token being transferred (order and length must match ids array)\r\n        @param data Additional data with no specified format\r\n        @return `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))` if transfer is allowed\r\n    */\r\n    function onERC1155BatchReceived(\r\n        address operator,\r\n        address from,\r\n        uint256[] calldata ids,\r\n        uint256[] calldata values,\r\n        bytes calldata data\r\n    ) external returns (bytes4);\r\n}\r\n"},"IERC165.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (utils/introspection/IERC165.sol)\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}\n"},"IERC721.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (token/ERC721/IERC721.sol)\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}\n"},"IERC721Metadata.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (token/ERC721/extensions/IERC721Metadata.sol)\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}\n"},"IERC721Receiver.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (token/ERC721/IERC721Receiver.sol)\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}\n"},"Ownable.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (access/Ownable.sol)\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        _transferOwnership(_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        _transferOwnership(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        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"},"Strings.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (utils/Strings.sol)\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}\n"},"WhiteRabbitOne.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"./ERC721.sol\";\r\nimport \"./Ownable.sol\";\r\nimport \"./ERC1155Burnable.sol\";\r\n\r\ncontract WhiteRabbitOne is ERC721, Ownable {\r\n    using Address for address;\r\n    using Strings for uint256;\r\n    \r\n    // metadata\r\n    bool public metadataLocked = false;\r\n    string public baseURI = \"\";\r\n\r\n    // supply and phases\r\n    uint256 public mintIndex;\r\n    uint256 public availSupply = 8765;\r\n    bool public presaleEnded = false;\r\n    bool public publicSaleEnded = false;\r\n    bool public mintPaused = true;\r\n    \r\n    // price\r\n    uint256 public constant PRICE_PRESALE = 0.06 ether;\r\n    uint256 public constant PRICE_MAINSALE = 0.08 ether;\r\n\r\n    // limits\r\n    uint256 public constant MINTS_PER_PASS = 3;\r\n    uint256 public constant MAX_PER_TX_PUBLIC_SALE = 15;\r\n    uint256 public constant MAX_PER_WALLET_PUBLIC_SALE = 100;\r\n    \r\n    // presale access\r\n    ERC1155Burnable public MintPass;\r\n    uint256 public MintPassTokenId;\r\n\r\n    // tracking per wallet\r\n    mapping(address =\u003e uint256) public mintedPublicSale;\r\n\r\n    /**\r\n     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection, and by setting supply caps, mint indexes, and reserves\r\n     */\r\n    constructor()\r\n        ERC721(\"WhiteRabbitOne\", \"WR1\")\r\n    {\r\n        MintPass = ERC1155Burnable(0x29e99baEfeaC4FE2b3dDDBBfC18A517fb7D6DDf8);\r\n        MintPassTokenId = 1;\r\n    }\r\n    \r\n    /**\r\n     * ------------ METADATA ------------ \r\n     */\r\n\r\n    /**\r\n     * @dev Gets base metadata URI\r\n     */\r\n    function _baseURI() internal view override returns (string memory) {\r\n        return baseURI;\r\n    }\r\n    \r\n    /**\r\n     * @dev Sets base metadata URI, callable by owner\r\n     */\r\n    function setBaseUri(string memory _uri) external onlyOwner {\r\n        require(metadataLocked == false);\r\n        baseURI = _uri;\r\n    }\r\n    \r\n    /**\r\n     * @dev Lock metadata URI forever, callable by owner\r\n     */\r\n    function lockMetadata() external onlyOwner {\r\n        require(metadataLocked == false);\r\n        metadataLocked = true;\r\n    }\r\n    \r\n    /**\r\n     * @dev See {IERC721Metadata-tokenURI}.\r\n     */\r\n    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\r\n        require(_exists(tokenId), \"ERC721URIStorage: URI query for nonexistent token\");\r\n        \r\n        string memory base = _baseURI();\r\n        return string(abi.encodePacked(base, tokenId.toString()));\r\n    }\r\n    \r\n    /**\r\n     * ------------ SALE AND PRESALE ------------ \r\n     */\r\n     \r\n    /**\r\n     * @dev Ends public sale forever, callable by owner\r\n     */\r\n    function endSaleForever() external onlyOwner {\r\n        publicSaleEnded = true;\r\n    }\r\n    \r\n    /**\r\n     * @dev Ends the presale, callable by owner\r\n     */\r\n    function endPresale() external onlyOwner {\r\n        presaleEnded = true;\r\n    }\r\n\r\n    /**\r\n     * @dev Pause/unpause sale or presale\r\n     */\r\n    function togglePauseMinting() external onlyOwner {\r\n        mintPaused = !mintPaused;\r\n    }\r\n\r\n    /**\r\n     * ------------ CONFIGURATION ------------ \r\n     */\r\n\r\n    /**\r\n     * @dev Set presale access token address\r\n     */\r\n    function setMintPass(address addr, uint256 tokenId) external onlyOwner {\r\n        MintPass = ERC1155Burnable(addr);\r\n        MintPassTokenId = tokenId;\r\n    }\r\n     \r\n    /**\r\n     * ------------ MINTING ------------ \r\n     */\r\n    \r\n    /**\r\n     * @dev Mints `count` tokens to `to` address; internal\r\n     */\r\n    function mintInternal(address to, uint256 count) internal {\r\n        for (uint256 i = 0; i \u003c count; i++) {\r\n            _mint(to, mintIndex);\r\n            mintIndex++;\r\n        }\r\n    }\r\n    \r\n    /**\r\n     * @dev Public minting during public sale or presale\r\n     */\r\n    function mint(uint256 count) public payable{\r\n        require(count \u003e 0, \"Count can\u0027t be 0\");\r\n        require(!mintPaused, \"Minting is currently paused\");\r\n        require(publicSaleEnded == false, \"Sale ended\");\r\n        require(mintIndex + count \u003c= availSupply, \"Supply exceeded\");\r\n\r\n        if (!presaleEnded) {\r\n            // presale checks\r\n            uint256 mintPassBalance = MintPass.balanceOf(msg.sender, MintPassTokenId);\r\n            require(count \u003c= mintPassBalance * MINTS_PER_PASS, \"Count too high\");\r\n            require(msg.value == count * PRICE_PRESALE, \"Ether value incorrect\");\r\n\r\n            uint256 valueToBurn = (count+MINTS_PER_PASS-1)/MINTS_PER_PASS;\r\n            MintPass.burn(msg.sender, MintPassTokenId, valueToBurn);\r\n        } else {\r\n            require(count \u003c= MAX_PER_TX_PUBLIC_SALE, \"Too many tokens\");\r\n            require(msg.value == count * PRICE_MAINSALE, \"Ether value incorrect\");\r\n            require(mintedPublicSale[msg.sender] + count \u003c= MAX_PER_WALLET_PUBLIC_SALE, \"Count exceeded during public sale\");\r\n            mintedPublicSale[msg.sender] += count;\r\n        }\r\n        \r\n        mintInternal(msg.sender, count);\r\n    }\r\n\r\n    /**\r\n     * @dev Withdraw ether from this contract, callable by owner\r\n     */\r\n    function withdraw() external onlyOwner {\r\n        uint256 balance = address(this).balance;\r\n        payable(msg.sender).transfer(balance);\r\n    }\r\n}"}}