Somon Badge

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.1;

/// @author thirdweb, OpenZeppelin Contracts (v4.9.0)

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {ERC1155SignatureMint} from '@thirdweb-dev/contracts/base/ERC1155SignatureMint.sol';

contract BadgeSignatureMint is ERC1155SignatureMint {
    address public signer;

    constructor(
        address _defaultAdmin,
        address _defaultSigner
    )
        ERC1155SignatureMint(
            _defaultAdmin,
            'Somon Badge',
            'SMB',
            _defaultAdmin,
            1000,
            _defaultAdmin
        )
    {
        signer = _defaultSigner;
    }
    /// @dev Set the signer address
    function setSigner(address _newSigner) external onlyOwner {
        signer = _newSigner;
    }

    /// @dev Returns whether a given address is authorized to sign sign mint requests.
    function _canSignMintRequest(address _signer) internal view virtual override returns (bool) {
        return signer == _signer || _signer == owner();
    }

    /// @dev set the baseURI for a batch of tokens
    function setBaseURI(
        uint256 _startId,
        uint256 _amountToMint,
        string memory _baseURI
    ) external onlyOwner {
        (uint256 nextTokenIdToMint, ) = _batchMintMetadata(_startId, _amountToMint, _baseURI);
        nextTokenIdToMint_ = nextTokenIdToMint;
    }

    /// @dev reset the baseURI for a batch of tokens, batchId must exist
    function setBatchBaseURI(uint256 _batchId, string memory _baseURI) external onlyOwner {
        _setBaseURI(_batchId, _baseURI);
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

/**
 *  @title   Batch-mint Metadata
 *  @notice  The `BatchMintMetadata` is a contract extension for any base NFT contract. It lets the smart contract
 *           using this extension set metadata for `n` number of NFTs all at once. This is enabled by storing a single
 *           base URI for a batch of `n` NFTs, where the metadata for each NFT in a relevant batch is `baseURI/tokenId`.
 */

contract BatchMintMetadata {
    /// @dev Invalid index for batch
    error BatchMintInvalidBatchId(uint256 index);

    /// @dev Invalid token
    error BatchMintInvalidTokenId(uint256 tokenId);

    /// @dev Metadata frozen
    error BatchMintMetadataFrozen(uint256 batchId);

    /// @dev Largest tokenId of each batch of tokens with the same baseURI + 1 {ex: batchId 100 at position 0 includes tokens 0-99}
    uint256[] private batchIds;

    /// @dev Mapping from id of a batch of tokens => to base URI for the respective batch of tokens.
    mapping(uint256 => string) private baseURI;

    /// @dev Mapping from id of a batch of tokens => to whether the base URI for the respective batch of tokens is frozen.
    mapping(uint256 => bool) public batchFrozen;

    /// @dev This event emits when the metadata of all tokens are frozen.
    /// While not currently supported by marketplaces, this event allows
    /// future indexing if desired.
    event MetadataFrozen();

    // @dev This event emits when the metadata of a range of tokens is updated.
    /// So that the third-party platforms such as NFT market could
    /// timely update the images and related attributes of the NFTs.
    event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId);

    /**
     *  @notice         Returns the count of batches of NFTs.
     *  @dev            Each batch of tokens has an in ID and an associated `baseURI`.
     *                  See {batchIds}.
     */
    function getBaseURICount() public view returns (uint256) {
        return batchIds.length;
    }

    /**
     *  @notice         Returns the ID for the batch of tokens at the given index.
     *  @dev            See {getBaseURICount}.
     *  @param _index   Index of the desired batch in batchIds array.
     */
    function getBatchIdAtIndex(uint256 _index) public view returns (uint256) {
        if (_index >= getBaseURICount()) {
            revert BatchMintInvalidBatchId(_index);
        }
        return batchIds[_index];
    }

    /// @dev Returns the id for the batch of tokens the given tokenId belongs to.
    function _getBatchId(uint256 _tokenId) internal view returns (uint256 batchId, uint256 index) {
        uint256 numOfTokenBatches = getBaseURICount();
        uint256[] memory indices = batchIds;

        for (uint256 i = 0; i < numOfTokenBatches; i += 1) {
            if (_tokenId < indices[i]) {
                index = i;
                batchId = indices[i];

                return (batchId, index);
            }
        }

        revert BatchMintInvalidTokenId(_tokenId);
    }

    /// @dev Returns the baseURI for a token. The intended metadata URI for the token is baseURI + tokenId.
    function _getBaseURI(uint256 _tokenId) internal view returns (string memory) {
        uint256 numOfTokenBatches = getBaseURICount();
        uint256[] memory indices = batchIds;

        for (uint256 i = 0; i < numOfTokenBatches; i += 1) {
            if (_tokenId < indices[i]) {
                return baseURI[indices[i]];
            }
        }

        revert BatchMintInvalidTokenId(_tokenId);
    }

    /// @dev returns the starting tokenId of a given batchId.
    function _getBatchStartId(uint256 _batchID) internal view returns (uint256) {
        uint256 numOfTokenBatches = getBaseURICount();
        uint256[] memory indices = batchIds;

        for (uint256 i = 0; i < numOfTokenBatches; i++) {
            if (_batchID == indices[i]) {
                if (i > 0) {
                    return indices[i - 1];
                }
                return 0;
            }
        }

        revert BatchMintInvalidBatchId(_batchID);
    }

    /// @dev Sets the base URI for the batch of tokens with the given batchId.
    function _setBaseURI(uint256 _batchId, string memory _baseURI) internal {
        if (batchFrozen[_batchId]) {
            revert BatchMintMetadataFrozen(_batchId);
        }
        baseURI[_batchId] = _baseURI;
        emit BatchMetadataUpdate(_getBatchStartId(_batchId), _batchId);
    }

    /// @dev Freezes the base URI for the batch of tokens with the given batchId.
    function _freezeBaseURI(uint256 _batchId) internal {
        string memory baseURIForBatch = baseURI[_batchId];
        if (bytes(baseURIForBatch).length == 0) {
            revert BatchMintInvalidBatchId(_batchId);
        }
        batchFrozen[_batchId] = true;
        emit MetadataFrozen();
    }

    /// @dev Mints a batch of tokenIds and associates a common baseURI to all those Ids.
    function _batchMintMetadata(
        uint256 _startId,
        uint256 _amountToMint,
        string memory _baseURIForTokens
    ) internal returns (uint256 nextTokenIdToMint, uint256 batchId) {
        batchId = _startId + _amountToMint;
        nextTokenIdToMint = batchId;

        batchIds.push(batchId);

        baseURI[batchId] = _baseURIForTokens;
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import "./interface/IContractMetadata.sol";

/**
 *  @title   Contract Metadata
 *  @notice  Thirdweb's `ContractMetadata` is a contract extension for any base contracts. It lets you set a metadata URI
 *           for you contract.
 *           Additionally, `ContractMetadata` is necessary for NFT contracts that want royalties to get distributed on OpenSea.
 */

abstract contract ContractMetadata is IContractMetadata {
    /// @dev The sender is not authorized to perform the action
    error ContractMetadataUnauthorized();

    /// @notice Returns the contract metadata URI.
    string public override contractURI;

    /**
     *  @notice         Lets a contract admin set the URI for contract-level metadata.
     *  @dev            Caller should be authorized to setup contractURI, e.g. contract admin.
     *                  See {_canSetContractURI}.
     *                  Emits {ContractURIUpdated Event}.
     *
     *  @param _uri     keccak256 hash of the role. e.g. keccak256("TRANSFER_ROLE")
     */
    function setContractURI(string memory _uri) external override {
        if (!_canSetContractURI()) {
            revert ContractMetadataUnauthorized();
        }

        _setupContractURI(_uri);
    }

    /// @dev Lets a contract admin set the URI for contract-level metadata.
    function _setupContractURI(string memory _uri) internal {
        string memory prevURI = contractURI;
        contractURI = _uri;

        emit ContractURIUpdated(prevURI, _uri);
    }

    /// @dev Returns whether contract metadata can be set in the given execution context.
    function _canSetContractURI() internal view virtual returns (bool);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

// Helper interfaces
import { IWETH } from "../infra/interface/IWETH.sol";
import { SafeERC20, IERC20 } from "../external-deps/openzeppelin/token/ERC20/utils/SafeERC20.sol";

library CurrencyTransferLib {
    using SafeERC20 for IERC20;

    error CurrencyTransferLibMismatchedValue(uint256 expected, uint256 actual);
    error CurrencyTransferLibFailedNativeTransfer(address recipient, uint256 value);

    /// @dev The address interpreted as native token of the chain.
    address public constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    /// @dev Transfers a given amount of currency.
    function transferCurrency(address _currency, address _from, address _to, uint256 _amount) internal {
        if (_amount == 0) {
            return;
        }

        if (_currency == NATIVE_TOKEN) {
            safeTransferNativeToken(_to, _amount);
        } else {
            safeTransferERC20(_currency, _from, _to, _amount);
        }
    }

    /// @dev Transfers a given amount of currency. (With native token wrapping)
    function transferCurrencyWithWrapper(
        address _currency,
        address _from,
        address _to,
        uint256 _amount,
        address _nativeTokenWrapper
    ) internal {
        if (_amount == 0) {
            return;
        }

        if (_currency == NATIVE_TOKEN) {
            if (_from == address(this)) {
                // withdraw from weth then transfer withdrawn native token to recipient
                IWETH(_nativeTokenWrapper).withdraw(_amount);
                safeTransferNativeTokenWithWrapper(_to, _amount, _nativeTokenWrapper);
            } else if (_to == address(this)) {
                // store native currency in weth
                if (_amount != msg.value) {
                    revert CurrencyTransferLibMismatchedValue(msg.value, _amount);
                }
                IWETH(_nativeTokenWrapper).deposit{ value: _amount }();
            } else {
                safeTransferNativeTokenWithWrapper(_to, _amount, _nativeTokenWrapper);
            }
        } else {
            safeTransferERC20(_currency, _from, _to, _amount);
        }
    }

    /// @dev Transfer `amount` of ERC20 token from `from` to `to`.
    function safeTransferERC20(address _currency, address _from, address _to, uint256 _amount) internal {
        if (_from == _to) {
            return;
        }

        if (_from == address(this)) {
            IERC20(_currency).safeTransfer(_to, _amount);
        } else {
            IERC20(_currency).safeTransferFrom(_from, _to, _amount);
        }
    }

    /// @dev Transfers `amount` of native token to `to`.
    function safeTransferNativeToken(address to, uint256 value) internal {
        // solhint-disable avoid-low-level-calls
        // slither-disable-next-line low-level-calls
        (bool success, ) = to.call{ value: value }("");
        if (!success) {
            revert CurrencyTransferLibFailedNativeTransfer(to, value);
        }
    }

    /// @dev Transfers `amount` of native token to `to`. (With native token wrapping)
    function safeTransferNativeTokenWithWrapper(address to, uint256 value, address _nativeTokenWrapper) internal {
        // solhint-disable avoid-low-level-calls
        // slither-disable-next-line low-level-calls
        (bool success, ) = to.call{ value: value }("");
        if (!success) {
            IWETH(_nativeTokenWrapper).deposit{ value: value }();
            IERC20(_nativeTokenWrapper).safeTransfer(to, value);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../../../../lib/Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 message) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\n32")
            mstore(0x1c, hash)
            message := keccak256(0x00, 0x3c)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 data) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, "\x19\x01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            data := keccak256(ptr, 0x42)
        }
    }

    /**
     * @dev Returns an Ethereum Signed Data with intended validator, created from a
     * `validator` and `data` according to the version 0 of EIP-191.
     *
     * See {recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x00", validator, data));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)

pragma solidity ^0.8.0;

import "./ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;
    address private immutable _CACHED_THIS;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _CACHED_THIS = address(this);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

// SPDX-License-Identifier: Apache 2.0
pragma solidity ^0.8.0;

import "./interface/IERC1155.sol";
import "./interface/IERC1155Metadata.sol";
import "./interface/IERC1155Receiver.sol";

contract ERC1155 is IERC1155, IERC1155Metadata {
    /*//////////////////////////////////////////////////////////////
                        State variables
    //////////////////////////////////////////////////////////////*/

    string public name;
    string public symbol;

    /*//////////////////////////////////////////////////////////////
                            Mappings
    //////////////////////////////////////////////////////////////*/

    mapping(address => mapping(uint256 => uint256)) public balanceOf;

    mapping(address => mapping(address => bool)) public isApprovedForAll;

    mapping(uint256 => string) internal _uri;

    /*//////////////////////////////////////////////////////////////
                            Constructor
    //////////////////////////////////////////////////////////////*/

    constructor(string memory _name, string memory _symbol) {
        name = _name;
        symbol = _symbol;
    }

    /*//////////////////////////////////////////////////////////////
                            View functions
    //////////////////////////////////////////////////////////////*/

    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return
            interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
            interfaceId == 0xd9b67a26 || // ERC165 Interface ID for ERC1155
            interfaceId == 0x0e89341c; // ERC165 Interface ID for ERC1155MetadataURI
    }

    function uri(uint256 tokenId) public view virtual override returns (string memory) {
        return _uri[tokenId];
    }

    function balanceOfBatch(
        address[] memory accounts,
        uint256[] memory ids
    ) public view virtual override returns (uint256[] memory) {
        require(accounts.length == ids.length, "LENGTH_MISMATCH");

        uint256[] memory batchBalances = new uint256[](accounts.length);

        for (uint256 i = 0; i < accounts.length; ++i) {
            batchBalances[i] = balanceOf[accounts[i]][ids[i]];
        }

        return batchBalances;
    }

    /*//////////////////////////////////////////////////////////////
                            ERC1155 logic
    //////////////////////////////////////////////////////////////*/

    function setApprovalForAll(address operator, bool approved) public virtual override {
        address owner = msg.sender;
        require(owner != operator, "APPROVING_SELF");
        isApprovedForAll[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) public virtual override {
        require(from == msg.sender || isApprovedForAll[from][msg.sender], "!OWNER_OR_APPROVED");
        _safeTransferFrom(from, to, id, amount, data);
    }

    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public virtual override {
        require(from == msg.sender || isApprovedForAll[from][msg.sender], "!OWNER_OR_APPROVED");
        _safeBatchTransferFrom(from, to, ids, amounts, data);
    }

    /*//////////////////////////////////////////////////////////////
                            Internal logic
    //////////////////////////////////////////////////////////////*/

    function _safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "TO_ZERO_ADDR");

        address operator = msg.sender;

        _beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);

        uint256 fromBalance = balanceOf[from][id];
        require(fromBalance >= amount, "INSUFFICIENT_BAL");
        unchecked {
            balanceOf[from][id] = fromBalance - amount;
        }
        balanceOf[to][id] += amount;

        emit TransferSingle(operator, from, to, id, amount);

        _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
    }

    function _safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(ids.length == amounts.length, "LENGTH_MISMATCH");
        require(to != address(0), "TO_ZERO_ADDR");

        address operator = msg.sender;

        _beforeTokenTransfer(operator, from, to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; ++i) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = balanceOf[from][id];
            require(fromBalance >= amount, "INSUFFICIENT_BAL");
            unchecked {
                balanceOf[from][id] = fromBalance - amount;
            }
            balanceOf[to][id] += amount;
        }

        emit TransferBatch(operator, from, to, ids, amounts);

        _doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
    }

    function _setTokenURI(uint256 tokenId, string memory newuri) internal virtual {
        _uri[tokenId] = newuri;
    }

    function _mint(address to, uint256 id, uint256 amount, bytes memory data) internal virtual {
        require(to != address(0), "TO_ZERO_ADDR");

        address operator = msg.sender;

        _beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data);

        balanceOf[to][id] += amount;
        emit TransferSingle(operator, address(0), to, id, amount);

        _doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
    }

    function _mintBatch(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "TO_ZERO_ADDR");
        require(ids.length == amounts.length, "LENGTH_MISMATCH");

        address operator = msg.sender;

        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; i++) {
            balanceOf[to][ids[i]] += amounts[i];
        }

        emit TransferBatch(operator, address(0), to, ids, amounts);

        _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
    }

    function _burn(address from, uint256 id, uint256 amount) internal virtual {
        require(from != address(0), "FROM_ZERO_ADDR");

        address operator = msg.sender;

        _beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), "");

        uint256 fromBalance = balanceOf[from][id];
        require(fromBalance >= amount, "INSUFFICIENT_BAL");
        unchecked {
            balanceOf[from][id] = fromBalance - amount;
        }

        emit TransferSingle(operator, from, address(0), id, amount);
    }

    function _burnBatch(address from, uint256[] memory ids, uint256[] memory amounts) internal virtual {
        require(from != address(0), "FROM_ZERO_ADDR");
        require(ids.length == amounts.length, "LENGTH_MISMATCH");

        address operator = msg.sender;

        _beforeTokenTransfer(operator, from, address(0), ids, amounts, "");

        for (uint256 i = 0; i < ids.length; i++) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = balanceOf[from][id];
            require(fromBalance >= amount, "INSUFFICIENT_BAL");
            unchecked {
                balanceOf[from][id] = fromBalance - amount;
            }
        }

        emit TransferBatch(operator, from, address(0), ids, amounts);
    }

    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {}

    function _doSafeTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) private {
        if (to.code.length > 0) {
            try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
                if (response != IERC1155Receiver.onERC1155Received.selector) {
                    revert("TOKENS_REJECTED");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("!ERC1155RECEIVER");
            }
        }
    }

    function _doSafeBatchTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) private {
        if (to.code.length > 0) {
            try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
                bytes4 response
            ) {
                if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
                    revert("TOKENS_REJECTED");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("!ERC1155RECEIVER");
            }
        }
    }

    function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
        uint256[] memory array = new uint256[](1);
        array[0] = element;

        return array;
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import { ERC1155 } from "../eip/ERC1155.sol";

import "../extension/ContractMetadata.sol";
import "../extension/Multicall.sol";
import "../extension/Ownable.sol";
import "../extension/Royalty.sol";
import "../extension/BatchMintMetadata.sol";

import "../lib/Strings.sol";

/**
 *  The `ERC1155Base` smart contract implements the ERC1155 NFT standard.
 *  It includes the following additions to standard ERC1155 logic:
 *
 *      - Ability to mint NFTs via the provided `mintTo` and `batchMintTo` functions.
 *
 *      - Contract metadata for royalty support on platforms such as OpenSea that use
 *        off-chain information to distribute roaylties.
 *
 *      - Ownership of the contract, with the ability to restrict certain functions to
 *        only be called by the contract's owner.
 *
 *      - Multicall capability to perform multiple actions atomically
 *
 *      - EIP 2981 compliance for royalty support on NFT marketplaces.
 */

contract ERC1155Base is ERC1155, ContractMetadata, Ownable, Royalty, Multicall, BatchMintMetadata {
    using Strings for uint256;

    /*//////////////////////////////////////////////////////////////
                        State variables
    //////////////////////////////////////////////////////////////*/

    /// @dev The tokenId of the next NFT to mint.
    uint256 internal nextTokenIdToMint_;

    /*//////////////////////////////////////////////////////////////
                        Mappings
    //////////////////////////////////////////////////////////////*/

    /**
     *  @notice Returns the total supply of NFTs of a given tokenId
     *  @dev Mapping from tokenId => total circulating supply of NFTs of that tokenId.
     */
    mapping(uint256 => uint256) public totalSupply;

    /*//////////////////////////////////////////////////////////////
                            Constructor
    //////////////////////////////////////////////////////////////*/

    constructor(
        address _defaultAdmin,
        string memory _name,
        string memory _symbol,
        address _royaltyRecipient,
        uint128 _royaltyBps
    ) ERC1155(_name, _symbol) {
        _setupOwner(_defaultAdmin);
        _setupDefaultRoyaltyInfo(_royaltyRecipient, _royaltyBps);
    }

    /*//////////////////////////////////////////////////////////////
                    Overriden metadata logic
    //////////////////////////////////////////////////////////////*/

    /// @notice Returns the metadata URI for the given tokenId.
    /// @param _tokenId The tokenId of the token for which a URI should be returned.
    /// @return The metadata URI for the given tokenId.
    function uri(uint256 _tokenId) public view virtual override returns (string memory) {
        string memory uriForToken = _uri[_tokenId];
        if (bytes(uriForToken).length > 0) {
            return uriForToken;
        }

        string memory batchUri = _getBaseURI(_tokenId);
        return string(abi.encodePacked(batchUri, _tokenId.toString()));
    }

    /*//////////////////////////////////////////////////////////////
                        Mint / burn logic
    //////////////////////////////////////////////////////////////*/

    /**
     *  @notice          Lets an authorized address mint NFTs to a recipient.
     *  @dev             - The logic in the `_canMint` function determines whether the caller is authorized to mint NFTs.
     *                   - If `_tokenId == type(uint256).max` a new NFT at tokenId `nextTokenIdToMint` is minted. If the given
     *                     `tokenId < nextTokenIdToMint`, then additional supply of an existing NFT is being minted.
     *
     *  @param _to       The recipient of the NFTs to mint.
     *  @param _tokenId  The tokenId of the NFT to mint.
     *  @param _tokenURI The full metadata URI for the NFTs minted (if a new NFT is being minted).
     *  @param _amount   The amount of the same NFT to mint.
     */
    function mintTo(address _to, uint256 _tokenId, string memory _tokenURI, uint256 _amount) public virtual {
        require(_canMint(), "Not authorized to mint.");

        uint256 tokenIdToMint;
        uint256 nextIdToMint = nextTokenIdToMint();

        if (_tokenId == type(uint256).max) {
            tokenIdToMint = nextIdToMint;
            nextTokenIdToMint_ += 1;
            _setTokenURI(nextIdToMint, _tokenURI);
        } else {
            require(_tokenId < nextIdToMint, "invalid id");
            tokenIdToMint = _tokenId;
        }

        _mint(_to, tokenIdToMint, _amount, "");
    }

    /**
     *  @notice          Lets an authorized address mint multiple NEW NFTs at once to a recipient.
     *  @dev             The logic in the `_canMint` function determines whether the caller is authorized to mint NFTs.
     *                   If `_tokenIds[i] == type(uint256).max` a new NFT at tokenId `nextTokenIdToMint` is minted. If the given
     *                   `tokenIds[i] < nextTokenIdToMint`, then additional supply of an existing NFT is minted.
     *                   The metadata for each new NFT is stored at `baseURI/{tokenID of NFT}`
     *
     *  @param _to       The recipient of the NFT to mint.
     *  @param _tokenIds The tokenIds of the NFTs to mint.
     *  @param _amounts  The amounts of each NFT to mint.
     *  @param _baseURI  The baseURI for the `n` number of NFTs minted. The metadata for each NFT is `baseURI/tokenId`
     */
    function batchMintTo(
        address _to,
        uint256[] memory _tokenIds,
        uint256[] memory _amounts,
        string memory _baseURI
    ) public virtual {
        require(_canMint(), "Not authorized to mint.");
        require(_amounts.length > 0, "Minting zero tokens.");
        require(_tokenIds.length == _amounts.length, "Length mismatch.");

        uint256 nextIdToMint = nextTokenIdToMint();
        uint256 startNextIdToMint = nextIdToMint;

        uint256 numOfNewNFTs;

        for (uint256 i = 0; i < _tokenIds.length; i += 1) {
            if (_tokenIds[i] == type(uint256).max) {
                _tokenIds[i] = nextIdToMint;

                nextIdToMint += 1;
                numOfNewNFTs += 1;
            } else {
                require(_tokenIds[i] < nextIdToMint, "invalid id");
            }
        }

        if (numOfNewNFTs > 0) {
            _batchMintMetadata(startNextIdToMint, numOfNewNFTs, _baseURI);
        }

        nextTokenIdToMint_ = nextIdToMint;
        _mintBatch(_to, _tokenIds, _amounts, "");
    }

    /**
     *  @notice         Lets an owner or approved operator burn NFTs of the given tokenId.
     *
     *  @param _owner   The owner of the NFT to burn.
     *  @param _tokenId The tokenId of the NFT to burn.
     *  @param _amount  The amount of the NFT to burn.
     */
    function burn(address _owner, uint256 _tokenId, uint256 _amount) external virtual {
        address caller = msg.sender;

        require(caller == _owner || isApprovedForAll[_owner][caller], "Unapproved caller");
        require(balanceOf[_owner][_tokenId] >= _amount, "Not enough tokens owned");

        _burn(_owner, _tokenId, _amount);
    }

    /**
     *  @notice         Lets an owner or approved operator burn NFTs of the given tokenIds.
     *
     *  @param _owner    The owner of the NFTs to burn.
     *  @param _tokenIds The tokenIds of the NFTs to burn.
     *  @param _amounts  The amounts of the NFTs to burn.
     */
    function burnBatch(address _owner, uint256[] memory _tokenIds, uint256[] memory _amounts) external virtual {
        address caller = msg.sender;

        require(caller == _owner || isApprovedForAll[_owner][caller], "Unapproved caller");
        require(_tokenIds.length == _amounts.length, "Length mismatch");

        for (uint256 i = 0; i < _tokenIds.length; i += 1) {
            require(balanceOf[_owner][_tokenIds[i]] >= _amounts[i], "Not enough tokens owned");
        }

        _burnBatch(_owner, _tokenIds, _amounts);
    }

    /*//////////////////////////////////////////////////////////////
                            ERC165 Logic
    //////////////////////////////////////////////////////////////*/

    /**
     * @dev See ERC165: https://eips.ethereum.org/EIPS/eip-165
     * @inheritdoc IERC165
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC1155, IERC165) returns (bool) {
        return
            interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
            interfaceId == 0xd9b67a26 || // ERC165 Interface ID for ERC1155
            interfaceId == 0x0e89341c || // ERC165 Interface ID for ERC1155MetadataURI
            interfaceId == type(IERC2981).interfaceId; // ERC165 ID for ERC2981
    }

    /*//////////////////////////////////////////////////////////////
                            View functions
    //////////////////////////////////////////////////////////////*/

    /// @notice The tokenId assigned to the next new NFT to be minted.
    function nextTokenIdToMint() public view virtual returns (uint256) {
        return nextTokenIdToMint_;
    }

    /*//////////////////////////////////////////////////////////////
                    Internal (overrideable) functions
    //////////////////////////////////////////////////////////////*/

    /// @dev Returns whether contract metadata can be set in the given execution context.
    /// @return Whether contract metadata can be set in the given execution context.
    function _canSetContractURI() internal view virtual override returns (bool) {
        return msg.sender == owner();
    }

    /// @dev Returns whether a token can be minted in the given execution context.
    /// @return Whether a token can be minted in the given execution context.
    function _canMint() internal view virtual returns (bool) {
        return msg.sender == owner();
    }

    /// @dev Returns whether owner can be set in the given execution context.
    /// @return Whether owner can be set in the given execution context.
    function _canSetOwner() internal view virtual override returns (bool) {
        return msg.sender == owner();
    }

    /// @dev Returns whether royalty info can be set in the given execution context.
    /// @return Whether royalty info can be set in the given execution context.
    function _canSetRoyaltyInfo() internal view virtual override returns (bool) {
        return msg.sender == owner();
    }

    /// @dev Runs before every token transfer / mint / burn.
    /// @param operator The address of the caller.
    /// @param from The address of the sender.
    /// @param to The address of the recipient.
    /// @param ids The tokenIds of the tokens being transferred.
    /// @param amounts The amounts of the tokens being transferred.
    /// @param data Additional data with no specified format.
    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual override {
        super._beforeTokenTransfer(operator, from, to, ids, amounts, data);

        if (from == address(0)) {
            for (uint256 i = 0; i < ids.length; ++i) {
                totalSupply[ids[i]] += amounts[i];
            }
        }

        if (to == address(0)) {
            for (uint256 i = 0; i < ids.length; ++i) {
                totalSupply[ids[i]] -= amounts[i];
            }
        }
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import "./ERC1155Base.sol";

import "../extension/PrimarySale.sol";
import "../extension/SignatureMintERC1155.sol";
import { ReentrancyGuard } from "../extension/upgradeable/ReentrancyGuard.sol";
import { CurrencyTransferLib } from "../lib/CurrencyTransferLib.sol";

/**
 *      BASE:      ERC1155Base
 *      EXTENSION: SignatureMintERC1155
 *
 *  The `ERC1155SignatureMint` contract uses the `ERC1155Base` contract, along with the `SignatureMintERC1155` extension.
 *
 *  The 'signature minting' mechanism in the `SignatureMintERC1155` extension uses EIP 712, and is a way for a contract
 *  admin to authorize an external party's request to mint tokens on the admin's contract. At a high level, this means
 *  you can authorize some external party to mint tokens on your contract, and specify what exactly will be minted by
 *  that external party.
 *
 */

contract ERC1155SignatureMint is ERC1155Base, PrimarySale, SignatureMintERC1155, ReentrancyGuard {
    /*//////////////////////////////////////////////////////////////
                            Constructor
    //////////////////////////////////////////////////////////////*/

    constructor(
        address _defaultAdmin,
        string memory _name,
        string memory _symbol,
        address _royaltyRecipient,
        uint128 _royaltyBps,
        address _primarySaleRecipient
    ) ERC1155Base(_defaultAdmin, _name, _symbol, _royaltyRecipient, _royaltyBps) {
        _setupPrimarySaleRecipient(_primarySaleRecipient);
    }

    /*//////////////////////////////////////////////////////////////
                        Signature minting logic
    //////////////////////////////////////////////////////////////*/

    /**
     *  @notice           Mints tokens according to the provided mint request.
     *
     *  @param _req       The payload / mint request.
     *  @param _signature The signature produced by an account signing the mint request.
     */
    function mintWithSignature(
        MintRequest calldata _req,
        bytes calldata _signature
    ) external payable virtual override nonReentrant returns (address signer) {
        require(_req.quantity > 0, "Minting zero tokens.");

        uint256 tokenIdToMint;
        uint256 nextIdToMint = nextTokenIdToMint();

        if (_req.tokenId == type(uint256).max) {
            tokenIdToMint = nextIdToMint;
            nextTokenIdToMint_ += 1;
        } else {
            require(_req.tokenId < nextIdToMint, "invalid id");
            tokenIdToMint = _req.tokenId;
        }

        // Verify and process payload.
        signer = _processRequest(_req, _signature);

        address receiver = _req.to;

        // Collect price
        _collectPriceOnClaim(_req.primarySaleRecipient, _req.quantity, _req.currency, _req.pricePerToken);

        // Set royalties, if applicable.
        if (_req.royaltyRecipient != address(0)) {
            _setupRoyaltyInfoForToken(tokenIdToMint, _req.royaltyRecipient, _req.royaltyBps);
        }

        // Set URI
        if (_req.tokenId == type(uint256).max) {
            _setTokenURI(tokenIdToMint, _req.uri);
        }

        // Mint tokens.
        _mint(receiver, tokenIdToMint, _req.quantity, "");

        emit TokensMintedWithSignature(signer, receiver, tokenIdToMint, _req);
    }

    /*//////////////////////////////////////////////////////////////
                            Internal functions
    //////////////////////////////////////////////////////////////*/

    /// @dev Returns whether a given address is authorized to sign mint requests.
    function _canSignMintRequest(address _signer) internal view virtual override returns (bool) {
        return _signer == owner();
    }

    /// @dev Returns whether primary sale recipient can be set in the given execution context.
    function _canSetPrimarySaleRecipient() internal view virtual override returns (bool) {
        return msg.sender == owner();
    }

    /// @dev Collects and distributes the primary sale value of NFTs being claimed.
    function _collectPriceOnClaim(
        address _primarySaleRecipient,
        uint256 _quantityToClaim,
        address _currency,
        uint256 _pricePerToken
    ) internal virtual {
        if (_pricePerToken == 0) {
            require(msg.value == 0, "!Value");
            return;
        }

        uint256 totalPrice = _quantityToClaim * _pricePerToken;

        bool validMsgValue;
        if (_currency == CurrencyTransferLib.NATIVE_TOKEN) {
            validMsgValue = msg.value == totalPrice;
        } else {
            validMsgValue = msg.value == 0;
        }
        require(validMsgValue, "Invalid msg value");

        address saleRecipient = _primarySaleRecipient == address(0) ? primarySaleRecipient() : _primarySaleRecipient;
        CurrencyTransferLib.transferCurrency(_currency, msg.sender, saleRecipient, totalPrice);
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

/**
 *  Thirdweb's `ContractMetadata` is a contract extension for any base contracts. It lets you set a metadata URI
 *  for you contract.
 *
 *  Additionally, `ContractMetadata` is necessary for NFT contracts that want royalties to get distributed on OpenSea.
 */

interface IContractMetadata {
    /// @dev Returns the metadata URI of the contract.
    function contractURI() external view returns (string memory);

    /**
     *  @dev Sets contract URI for the storefront-level metadata of the contract.
     *       Only module admin can call this function.
     */
    function setContractURI(string calldata _uri) external;

    /// @dev Emitted when the contract URI is updated.
    event ContractURIUpdated(string prevURI, string newURI);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/**
    @title ERC-1155 Multi Token Standard
    @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1155.md
    Note: The ERC-165 identifier for this interface is 0xd9b67a26.
 */
interface IERC1155 {
    /**
        @dev Either `TransferSingle` or `TransferBatch` MUST emit when tokens are transferred, including zero value transfers as well as minting or burning (see "Safe Transfer Rules" section of the standard).
        The `_operator` argument MUST be msg.sender.
        The `_from` argument MUST be the address of the holder whose balance is decreased.
        The `_to` argument MUST be the address of the recipient whose balance is increased.
        The `_id` argument MUST be the token type being transferred.
        The `_value` argument MUST be the number of tokens the holder balance is decreased by and match what the recipient balance is increased by.
        When minting/creating tokens, the `_from` argument MUST be set to `0x0` (i.e. zero address).
        When burning/destroying tokens, the `_to` argument MUST be set to `0x0` (i.e. zero address).
    */
    event TransferSingle(
        address indexed _operator,
        address indexed _from,
        address indexed _to,
        uint256 _id,
        uint256 _value
    );

    /**
        @dev Either `TransferSingle` or `TransferBatch` MUST emit when tokens are transferred, including zero value transfers as well as minting or burning (see "Safe Transfer Rules" section of the standard).
        The `_operator` argument MUST be msg.sender.
        The `_from` argument MUST be the address of the holder whose balance is decreased.
        The `_to` argument MUST be the address of the recipient whose balance is increased.
        The `_ids` argument MUST be the list of tokens being transferred.
        The `_values` argument MUST be the list of number of tokens (matching the list and order of tokens specified in _ids) the holder balance is decreased by and match what the recipient balance is increased by.
        When minting/creating tokens, the `_from` argument MUST be set to `0x0` (i.e. zero address).
        When burning/destroying tokens, the `_to` argument MUST be set to `0x0` (i.e. zero address).
    */
    event TransferBatch(
        address indexed _operator,
        address indexed _from,
        address indexed _to,
        uint256[] _ids,
        uint256[] _values
    );

    /**
        @dev MUST emit when approval for a second party/operator address to manage all tokens for an owner address is enabled or disabled (absense of an event assumes disabled).
    */
    event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved);

    /**
        @dev MUST emit when the URI is updated for a token ID.
        URIs are defined in RFC 3986.
        The URI MUST point a JSON file that conforms to the "ERC-1155 Metadata URI JSON Schema".
    */
    event URI(string _value, uint256 indexed _id);

    /**
        @notice Transfers `_value` amount of an `_id` from the `_from` address to the `_to` address specified (with safety call).
        @dev Caller must be approved to manage the tokens being transferred out of the `_from` account (see "Approval" section of the standard).
        MUST revert if `_to` is the zero address.
        MUST revert if balance of holder for token `_id` is lower than the `_value` sent.
        MUST revert on any other error.
        MUST emit the `TransferSingle` event to reflect the balance change (see "Safe Transfer Rules" section of the standard).
        After the above conditions are met, this function MUST check if `_to` is a smart contract (e.g. code size > 0). If so, it MUST call `onERC1155Received` on `_to` and act appropriately (see "Safe Transfer Rules" section of the standard).
        @param _from    Source address
        @param _to      Target address
        @param _id      ID of the token type
        @param _value   Transfer amount
        @param _data    Additional data with no specified format, MUST be sent unaltered in call to `onERC1155Received` on `_to`
    */
    function safeTransferFrom(address _from, address _to, uint256 _id, uint256 _value, bytes calldata _data) external;

    /**
        @notice Transfers `_values` amount(s) of `_ids` from the `_from` address to the `_to` address specified (with safety call).
        @dev Caller must be approved to manage the tokens being transferred out of the `_from` account (see "Approval" section of the standard).
        MUST revert if `_to` is the zero address.
        MUST revert if length of `_ids` is not the same as length of `_values`.
        MUST revert if any of the balance(s) of the holder(s) for token(s) in `_ids` is lower than the respective amount(s) in `_values` sent to the recipient.
        MUST revert on any other error.
        MUST emit `TransferSingle` or `TransferBatch` event(s) such that all the balance changes are reflected (see "Safe Transfer Rules" section of the standard).
        Balance changes and events MUST follow the ordering of the arrays (_ids[0]/_values[0] before _ids[1]/_values[1], etc).
        After the above conditions for the transfer(s) in the batch are met, this function MUST check if `_to` is a smart contract (e.g. code size > 0). If so, it MUST call the relevant `ERC1155TokenReceiver` hook(s) on `_to` and act appropriately (see "Safe Transfer Rules" section of the standard).
        @param _from    Source address
        @param _to      Target address
        @param _ids     IDs of each token type (order and length must match _values array)
        @param _values  Transfer amounts per token type (order and length must match _ids array)
        @param _data    Additional data with no specified format, MUST be sent unaltered in call to the `ERC1155TokenReceiver` hook(s) on `_to`
    */
    function safeBatchTransferFrom(
        address _from,
        address _to,
        uint256[] calldata _ids,
        uint256[] calldata _values,
        bytes calldata _data
    ) external;

    /**
        @notice Get the balance of an account's Tokens.
        @param _owner  The address of the token holder
        @param _id     ID of the Token
        @return        The _owner's balance of the Token type requested
     */
    function balanceOf(address _owner, uint256 _id) external view returns (uint256);

    /**
        @notice Get the balance of multiple account/token pairs
        @param _owners The addresses of the token holders
        @param _ids    ID of the Tokens
        @return        The _owner's balance of the Token types requested (i.e. balance for each (owner, id) pair)
     */
    function balanceOfBatch(
        address[] calldata _owners,
        uint256[] calldata _ids
    ) external view returns (uint256[] memory);

    /**
        @notice Enable or disable approval for a third party ("operator") to manage all of the caller's tokens.
        @dev MUST emit the ApprovalForAll event on success.
        @param _operator  Address to add to the set of authorized operators
        @param _approved  True if the operator is approved, false to revoke approval
    */
    function setApprovalForAll(address _operator, bool _approved) external;

    /**
        @notice Queries the approval status of an operator for a given owner.
        @param _owner     The owner of the Tokens
        @param _operator  Address of authorized operator
        @return           True if the operator is approved, false if not
    */
    function isApprovedForAll(address _owner, address _operator) external view returns (bool);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/**
    Note: The ERC-165 identifier for this interface is 0x0e89341c.
*/
interface IERC1155Metadata {
    /**
        @notice A distinct Uniform Resource Identifier (URI) for a given token.
        @dev URIs are defined in RFC 3986.
        The URI may point to a JSON file that conforms to the "ERC-1155 Metadata URI JSON Schema".
        @return URI string
    */
    function uri(uint256 _id) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev _Available since v3.1._
 */
interface IERC1155Receiver is IERC165 {
    /**
     * @dev Handles the receipt of a single ERC1155 token type. This function is
     * called at the end of a `safeTransferFrom` after the balance has been updated.
     *
     * NOTE: To accept the transfer, this must return
     * `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
     * (i.e. 0xf23a6e61, or its own function selector).
     *
     * @param operator The address which initiated the transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param id The ID of the token being transferred
     * @param value The amount of tokens being transferred
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
     */
    function onERC1155Received(
        address operator,
        address from,
        uint256 id,
        uint256 value,
        bytes calldata data
    ) external returns (bytes4);

    /**
     * @dev Handles the receipt of a multiple ERC1155 token types. This function
     * is called at the end of a `safeBatchTransferFrom` after the balances have
     * been updated.
     *
     * NOTE: To accept the transfer(s), this must return
     * `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
     * (i.e. 0xbc197c81, or its own function selector).
     *
     * @param operator The address which initiated the batch transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param ids An array containing ids of each token being transferred (order and length must match values array)
     * @param values An array containing amounts of each token being transferred (order and length must match ids array)
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
     */
    function onERC1155BatchReceived(
        address operator,
        address from,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    ) external returns (bytes4);
}

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

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
interface IERC20 {
    function totalSupply() external view returns (uint256);

    function balanceOf(address who) external view returns (uint256);

    function allowance(address owner, address spender) external view returns (uint256);

    function transfer(address to, uint256 value) external returns (bool);

    function approve(address spender, uint256 value) external returns (bool);

    function transferFrom(address from, address to, uint256 value) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: Apache 2.0
pragma solidity ^0.8.0;

import "./IERC165.sol";

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

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

/// @author thirdweb

/**
 * @dev Provides a function to batch together multiple calls in a single external call.
 *
 * _Available since v4.1._
 */
interface IMulticall {
    /**
     * @dev Receives and executes a batch of function calls on this contract.
     */
    function multicall(bytes[] calldata data) external returns (bytes[] memory results);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

/**
 *  Thirdweb's `Ownable` is a contract extension to be used with any base contract. It exposes functions for setting and reading
 *  who the 'owner' of the inheriting smart contract is, and lets the inheriting contract perform conditional logic that uses
 *  information about who the contract's owner is.
 */

interface IOwnable {
    /// @dev Returns the owner of the contract.
    function owner() external view returns (address);

    /// @dev Lets a module admin set a new owner for the contract. The new owner must be a module admin.
    function setOwner(address _newOwner) external;

    /// @dev Emitted when a new Owner is set.
    event OwnerUpdated(address indexed prevOwner, address indexed newOwner);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

/**
 *  Thirdweb's `Primary` is a contract extension to be used with any base contract. It exposes functions for setting and reading
 *  the recipient of primary sales, and lets the inheriting contract perform conditional logic that uses information about
 *  primary sales, if desired.
 */

interface IPrimarySale {
    /// @dev The adress that receives all primary sales value.
    function primarySaleRecipient() external view returns (address);

    /// @dev Lets a module admin set the default recipient of all primary sales.
    function setPrimarySaleRecipient(address _saleRecipient) external;

    /// @dev Emitted when a new sale recipient is set.
    event PrimarySaleRecipientUpdated(address indexed recipient);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import "../../eip/interface/IERC2981.sol";

/**
 *  Thirdweb's `Royalty` is a contract extension to be used with any base contract. It exposes functions for setting and reading
 *  the recipient of royalty fee and the royalty fee basis points, and lets the inheriting contract perform conditional logic
 *  that uses information about royalty fees, if desired.
 *
 *  The `Royalty` contract is ERC2981 compliant.
 */

interface IRoyalty is IERC2981 {
    struct RoyaltyInfo {
        address recipient;
        uint256 bps;
    }

    /// @dev Returns the royalty recipient and fee bps.
    function getDefaultRoyaltyInfo() external view returns (address, uint16);

    /// @dev Lets a module admin update the royalty bps and recipient.
    function setDefaultRoyaltyInfo(address _royaltyRecipient, uint256 _royaltyBps) external;

    /// @dev Lets a module admin set the royalty recipient for a particular token Id.
    function setRoyaltyInfoForToken(uint256 tokenId, address recipient, uint256 bps) external;

    /// @dev Returns the royalty recipient for a particular token Id.
    function getRoyaltyInfoForToken(uint256 tokenId) external view returns (address, uint16);

    /// @dev Emitted when royalty info is updated.
    event DefaultRoyalty(address indexed newRoyaltyRecipient, uint256 newRoyaltyBps);

    /// @dev Emitted when royalty recipient for tokenId is set
    event RoyaltyForToken(uint256 indexed tokenId, address indexed royaltyRecipient, uint256 royaltyBps);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

/**
 *  The 'signature minting' mechanism used in thirdweb Token smart contracts is a way for a contract admin to authorize an external party's
 *  request to mint tokens on the admin's contract.
 *
 *  At a high level, this means you can authorize some external party to mint tokens on your contract, and specify what exactly will be
 *  minted by that external party.
 */
interface ISignatureMintERC1155 {
    /**
     *  @notice The body of a request to mint tokens.
     *
     *  @param to The receiver of the tokens to mint.
     *  @param royaltyRecipient The recipient of the minted token's secondary sales royalties. (Not applicable for ERC20 tokens)
     *  @param royaltyBps The percentage of the minted token's secondary sales to take as royalties. (Not applicable for ERC20 tokens)
     *  @param primarySaleRecipient The recipient of the minted token's primary sales proceeds.
     *  @param tokenId The tokenId of the token to mint. (Only applicable for ERC1155 tokens)
     *  @param uri The metadata URI of the token to mint. (Not applicable for ERC20 tokens)
     *  @param quantity The quantity of tokens to mint.
     *  @param pricePerToken The price to pay per quantity of tokens minted.
     *  @param currency The currency in which to pay the price per token minted.
     *  @param validityStartTimestamp The unix timestamp after which the payload is valid.
     *  @param validityEndTimestamp The unix timestamp at which the payload expires.
     *  @param uid A unique identifier for the payload.
     */
    struct MintRequest {
        address to;
        address royaltyRecipient;
        uint256 royaltyBps;
        address primarySaleRecipient;
        uint256 tokenId;
        string uri;
        uint256 quantity;
        uint256 pricePerToken;
        address currency;
        uint128 validityStartTimestamp;
        uint128 validityEndTimestamp;
        bytes32 uid;
    }

    /// @dev Emitted when tokens are minted.
    event TokensMintedWithSignature(
        address indexed signer,
        address indexed mintedTo,
        uint256 indexed tokenIdMinted,
        MintRequest mintRequest
    );

    /**
     *  @notice Verifies that a mint request is signed by an account holding
     *          MINTER_ROLE (at the time of the function call).
     *
     *  @param req The payload / mint request.
     *  @param signature The signature produced by an account signing the mint request.
     *
     *  returns (success, signer) Result of verification and the recovered address.
     */
    function verify(
        MintRequest calldata req,
        bytes calldata signature
    ) external view returns (bool success, address signer);

    /**
     *  @notice Mints tokens according to the provided mint request.
     *
     *  @param req The payload / mint request.
     *  @param signature The signature produced by an account signing the mint request.
     */
    function mintWithSignature(
        MintRequest calldata req,
        bytes calldata signature
    ) external payable returns (address signer);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

interface IWETH {
    function deposit() external payable;

    function withdraw(uint256 amount) external;

    function transfer(address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: Apache 2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import "../lib/Address.sol";
import "./interface/IMulticall.sol";

/**
 * @dev Provides a function to batch together multiple calls in a single external call.
 *
 * _Available since v4.1._
 */
contract Multicall is IMulticall {
    /**
     *  @notice Receives and executes a batch of function calls on this contract.
     *  @dev Receives and executes a batch of function calls on this contract.
     *
     *  @param data The bytes data that makes up the batch of function calls to execute.
     *  @return results The bytes data that makes up the result of the batch of function calls executed.
     */
    function multicall(bytes[] calldata data) external returns (bytes[] memory results) {
        results = new bytes[](data.length);
        address sender = _msgSender();
        bool isForwarder = msg.sender != sender;
        for (uint256 i = 0; i < data.length; i++) {
            if (isForwarder) {
                results[i] = Address.functionDelegateCall(address(this), abi.encodePacked(data[i], sender));
            } else {
                results[i] = Address.functionDelegateCall(address(this), data[i]);
            }
        }
        return results;
    }

    /// @notice Returns the sender in the given execution context.
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import "./interface/IOwnable.sol";

/**
 *  @title   Ownable
 *  @notice  Thirdweb's `Ownable` is a contract extension to be used with any base contract. It exposes functions for setting and reading
 *           who the 'owner' of the inheriting smart contract is, and lets the inheriting contract perform conditional logic that uses
 *           information about who the contract's owner is.
 */

abstract contract Ownable is IOwnable {
    /// @dev The sender is not authorized to perform the action
    error OwnableUnauthorized();

    /// @dev Owner of the contract (purpose: OpenSea compatibility)
    address private _owner;

    /// @dev Reverts if caller is not the owner.
    modifier onlyOwner() {
        if (msg.sender != _owner) {
            revert OwnableUnauthorized();
        }
        _;
    }

    /**
     *  @notice Returns the owner of the contract.
     */
    function owner() public view override returns (address) {
        return _owner;
    }

    /**
     *  @notice Lets an authorized wallet set a new owner for the contract.
     *  @param _newOwner The address to set as the new owner of the contract.
     */
    function setOwner(address _newOwner) external override {
        if (!_canSetOwner()) {
            revert OwnableUnauthorized();
        }
        _setupOwner(_newOwner);
    }

    /// @dev Lets a contract admin set a new owner for the contract. The new owner must be a contract admin.
    function _setupOwner(address _newOwner) internal {
        address _prevOwner = _owner;
        _owner = _newOwner;

        emit OwnerUpdated(_prevOwner, _newOwner);
    }

    /// @dev Returns whether owner can be set in the given execution context.
    function _canSetOwner() internal view virtual returns (bool);
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import "./interface/IPrimarySale.sol";

/**
 *  @title   Primary Sale
 *  @notice  Thirdweb's `PrimarySale` is a contract extension to be used with any base contract. It exposes functions for setting and reading
 *           the recipient of primary sales, and lets the inheriting contract perform conditional logic that uses information about
 *           primary sales, if desired.
 */

abstract contract PrimarySale is IPrimarySale {
    /// @dev The sender is not authorized to perform the action
    error PrimarySaleUnauthorized();

    /// @dev The recipient is invalid
    error PrimarySaleInvalidRecipient(address recipient);

    /// @dev The address that receives all primary sales value.
    address private recipient;

    /// @dev Returns primary sale recipient address.
    function primarySaleRecipient() public view override returns (address) {
        return recipient;
    }

    /**
     *  @notice         Updates primary sale recipient.
     *  @dev            Caller should be authorized to set primary sales info.
     *                  See {_canSetPrimarySaleRecipient}.
     *                  Emits {PrimarySaleRecipientUpdated Event}; See {_setupPrimarySaleRecipient}.
     *
     *  @param _saleRecipient   Address to be set as new recipient of primary sales.
     */
    function setPrimarySaleRecipient(address _saleRecipient) external override {
        if (!_canSetPrimarySaleRecipient()) {
            revert PrimarySaleUnauthorized();
        }
        _setupPrimarySaleRecipient(_saleRecipient);
    }

    /// @dev Lets a contract admin set the recipient for all primary sales.
    function _setupPrimarySaleRecipient(address _saleRecipient) internal {
        if (_saleRecipient == address(0)) {
            revert PrimarySaleInvalidRecipient(_saleRecipient);
        }

        recipient = _saleRecipient;
        emit PrimarySaleRecipientUpdated(_saleRecipient);
    }

    /// @dev Returns whether primary sale recipient can be set in the given execution context.
    function _canSetPrimarySaleRecipient() internal view virtual returns (bool);
}

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

pragma solidity ^0.8.0;

library ReentrancyGuardStorage {
    /// @custom:storage-location erc7201:reentrancy.guard.storage
    /// @dev keccak256(abi.encode(uint256(keccak256("reentrancy.guard.storage")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 public constant REENTRANCY_GUARD_STORAGE_POSITION =
        0x1d281c488dae143b6ea4122e80c65059929950b9c32f17fc57be22089d9c3b00;

    struct Data {
        uint256 _status;
    }

    function data() internal pure returns (Data storage data_) {
        bytes32 position = REENTRANCY_GUARD_STORAGE_POSITION;
        assembly {
            data_.slot := position
        }
    }
}

abstract contract ReentrancyGuard {
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    constructor() {
        _reentrancyGuardStorage()._status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_reentrancyGuardStorage()._status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _reentrancyGuardStorage()._status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _reentrancyGuardStorage()._status = _NOT_ENTERED;
    }

    /// @dev Returns the ReentrancyGuard storage.
    function _reentrancyGuardStorage() internal pure returns (ReentrancyGuardStorage.Data storage data) {
        data = ReentrancyGuardStorage.data();
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import "./interface/IRoyalty.sol";

/**
 *  @title   Royalty
 *  @notice  Thirdweb's `Royalty` is a contract extension to be used with any base contract. It exposes functions for setting and reading
 *           the recipient of royalty fee and the royalty fee basis points, and lets the inheriting contract perform conditional logic
 *           that uses information about royalty fees, if desired.
 *
 *  @dev     The `Royalty` contract is ERC2981 compliant.
 */

abstract contract Royalty is IRoyalty {
    /// @dev The sender is not authorized to perform the action
    error RoyaltyUnauthorized();

    /// @dev The recipient is invalid
    error RoyaltyInvalidRecipient(address recipient);

    /// @dev The fee bps exceeded the max value
    error RoyaltyExceededMaxFeeBps(uint256 max, uint256 actual);

    /// @dev The (default) address that receives all royalty value.
    address private royaltyRecipient;

    /// @dev The (default) % of a sale to take as royalty (in basis points).
    uint16 private royaltyBps;

    /// @dev Token ID => royalty recipient and bps for token
    mapping(uint256 => RoyaltyInfo) private royaltyInfoForToken;

    /**
     *  @notice   View royalty info for a given token and sale price.
     *  @dev      Returns royalty amount and recipient for `tokenId` and `salePrice`.
     *  @param tokenId          The tokenID of the NFT for which to query royalty info.
     *  @param salePrice        Sale price of the token.
     *
     *  @return receiver        Address of royalty recipient account.
     *  @return royaltyAmount   Royalty amount calculated at current royaltyBps value.
     */
    function royaltyInfo(
        uint256 tokenId,
        uint256 salePrice
    ) external view virtual override returns (address receiver, uint256 royaltyAmount) {
        (address recipient, uint256 bps) = getRoyaltyInfoForToken(tokenId);
        receiver = recipient;
        royaltyAmount = (salePrice * bps) / 10_000;
    }

    /**
     *  @notice          View royalty info for a given token.
     *  @dev             Returns royalty recipient and bps for `_tokenId`.
     *  @param _tokenId  The tokenID of the NFT for which to query royalty info.
     */
    function getRoyaltyInfoForToken(uint256 _tokenId) public view override returns (address, uint16) {
        RoyaltyInfo memory royaltyForToken = royaltyInfoForToken[_tokenId];

        return
            royaltyForToken.recipient == address(0)
                ? (royaltyRecipient, uint16(royaltyBps))
                : (royaltyForToken.recipient, uint16(royaltyForToken.bps));
    }

    /**
     *  @notice Returns the defualt royalty recipient and BPS for this contract's NFTs.
     */
    function getDefaultRoyaltyInfo() external view override returns (address, uint16) {
        return (royaltyRecipient, uint16(royaltyBps));
    }

    /**
     *  @notice         Updates default royalty recipient and bps.
     *  @dev            Caller should be authorized to set royalty info.
     *                  See {_canSetRoyaltyInfo}.
     *                  Emits {DefaultRoyalty Event}; See {_setupDefaultRoyaltyInfo}.
     *
     *  @param _royaltyRecipient   Address to be set as default royalty recipient.
     *  @param _royaltyBps         Updated royalty bps.
     */
    function setDefaultRoyaltyInfo(address _royaltyRecipient, uint256 _royaltyBps) external override {
        if (!_canSetRoyaltyInfo()) {
            revert RoyaltyUnauthorized();
        }

        _setupDefaultRoyaltyInfo(_royaltyRecipient, _royaltyBps);
    }

    /// @dev Lets a contract admin update the default royalty recipient and bps.
    function _setupDefaultRoyaltyInfo(address _royaltyRecipient, uint256 _royaltyBps) internal {
        if (_royaltyBps > 10_000) {
            revert RoyaltyExceededMaxFeeBps(10_000, _royaltyBps);
        }

        royaltyRecipient = _royaltyRecipient;
        royaltyBps = uint16(_royaltyBps);

        emit DefaultRoyalty(_royaltyRecipient, _royaltyBps);
    }

    /**
     *  @notice         Updates default royalty recipient and bps for a particular token.
     *  @dev            Sets royalty info for `_tokenId`. Caller should be authorized to set royalty info.
     *                  See {_canSetRoyaltyInfo}.
     *                  Emits {RoyaltyForToken Event}; See {_setupRoyaltyInfoForToken}.
     *
     *  @param _recipient   Address to be set as royalty recipient for given token Id.
     *  @param _bps         Updated royalty bps for the token Id.
     */
    function setRoyaltyInfoForToken(uint256 _tokenId, address _recipient, uint256 _bps) external override {
        if (!_canSetRoyaltyInfo()) {
            revert RoyaltyUnauthorized();
        }

        _setupRoyaltyInfoForToken(_tokenId, _recipient, _bps);
    }

    /// @dev Lets a contract admin set the royalty recipient and bps for a particular token Id.
    function _setupRoyaltyInfoForToken(uint256 _tokenId, address _recipient, uint256 _bps) internal {
        if (_bps > 10_000) {
            revert RoyaltyExceededMaxFeeBps(10_000, _bps);
        }

        royaltyInfoForToken[_tokenId] = RoyaltyInfo({ recipient: _recipient, bps: _bps });

        emit RoyaltyForToken(_tokenId, _recipient, _bps);
    }

    /// @dev Returns whether royalty info can be set in the given execution context.
    function _canSetRoyaltyInfo() internal view virtual returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../../../../../eip/interface/IERC20.sol";
import { Address } from "../../../../../lib/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

import "./interface/ISignatureMintERC1155.sol";
import "../external-deps/openzeppelin/utils/cryptography/EIP712.sol";

abstract contract SignatureMintERC1155 is EIP712, ISignatureMintERC1155 {
    using ECDSA for bytes32;

    bytes32 internal constant TYPEHASH =
        keccak256(
            "MintRequest(address to,address royaltyRecipient,uint256 royaltyBps,address primarySaleRecipient,uint256 tokenId,string uri,uint256 quantity,uint256 pricePerToken,address currency,uint128 validityStartTimestamp,uint128 validityEndTimestamp,bytes32 uid)"
        );

    /// @dev Mapping from mint request UID => whether the mint request is processed.
    mapping(bytes32 => bool) private minted;

    constructor() EIP712("SignatureMintERC1155", "1") {}

    /// @dev Verifies that a mint request is signed by an account holding MINTER_ROLE (at the time of the function call).
    function verify(
        MintRequest calldata _req,
        bytes calldata _signature
    ) public view override returns (bool success, address signer) {
        signer = _recoverAddress(_req, _signature);
        success = !minted[_req.uid] && _canSignMintRequest(signer);
    }

    /// @dev Returns whether a given address is authorized to sign mint requests.
    function _canSignMintRequest(address _signer) internal view virtual returns (bool);

    /// @dev Verifies a mint request and marks the request as minted.
    function _processRequest(MintRequest calldata _req, bytes calldata _signature) internal returns (address signer) {
        bool success;
        (success, signer) = verify(_req, _signature);

        require(success, "Invalid request");
        require(
            _req.validityStartTimestamp <= block.timestamp && block.timestamp <= _req.validityEndTimestamp,
            "Request expired"
        );
        require(_req.to != address(0), "recipient undefined");
        require(_req.quantity > 0, "0 qty");

        minted[_req.uid] = true;
    }

    /// @dev Returns the address of the signer of the mint request.
    function _recoverAddress(MintRequest calldata _req, bytes calldata _signature) internal view returns (address) {
        return _hashTypedDataV4(keccak256(_encodeRequest(_req))).recover(_signature);
    }

    /// @dev Resolves 'stack too deep' error in `recoverAddress`.
    function _encodeRequest(MintRequest calldata _req) internal pure returns (bytes memory) {
        return
            bytes.concat(
                abi.encode(
                    TYPEHASH,
                    _req.to,
                    _req.royaltyRecipient,
                    _req.royaltyBps,
                    _req.primarySaleRecipient,
                    _req.tokenId,
                    keccak256(bytes(_req.uri))
                ),
                abi.encode(
                    _req.quantity,
                    _req.pricePerToken,
                    _req.currency,
                    _req.validityStartTimestamp,
                    _req.validityEndTimestamp,
                    _req.uid
                )
            );
    }
}

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

/// @author thirdweb

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is prefixed with "0x", encoded using 2 hexadecimal digits per byte,
    /// and the alphabets are capitalized conditionally according to
    /// https://eips.ethereum.org/EIPS/eip-55
    function toHexStringChecksummed(address value) internal pure returns (string memory str) {
        str = toHexString(value);
        /// @solidity memory-safe-assembly
        assembly {
            let mask := shl(6, div(not(0), 255)) // `0b010000000100000000 ...`
            let o := add(str, 0x22)
            let hashed := and(keccak256(o, 40), mul(34, mask)) // `0b10001000 ... `
            let t := shl(240, 136) // `0b10001000 << 240`
            for {
                let i := 0
            } 1 {

            } {
                mstore(add(i, i), mul(t, byte(i, hashed)))
                i := add(i, 1)
                if eq(i, 20) {
                    break
                }
            }
            mstore(o, xor(mload(o), shr(1, and(mload(0x00), and(mload(o), mask)))))
            o := add(o, 0x20)
            mstore(o, xor(mload(o), shr(1, and(mload(0x20), and(mload(o), mask)))))
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte.
    function toHexString(address value) internal pure returns (string memory str) {
        str = toHexStringNoPrefix(value);
        /// @solidity memory-safe-assembly
        assembly {
            let strLength := add(mload(str), 2) // Compute the length.
            mstore(str, 0x3078) // Write the "0x" prefix.
            str := sub(str, 2) // Move the pointer.
            mstore(str, strLength) // Write the length.
        }
    }

    /// @dev Returns the hexadecimal representation of `value`.
    /// The output is encoded using 2 hexadecimal digits per byte.
    function toHexStringNoPrefix(address value) internal pure returns (string memory str) {
        /// @solidity memory-safe-assembly
        assembly {
            str := mload(0x40)

            // Allocate the memory.
            // We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length,
            // 0x02 bytes for the prefix, and 0x28 bytes for the digits.
            // The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x28) is 0x80.
            mstore(0x40, add(str, 0x80))

            // Store "0123456789abcdef" in scratch space.
            mstore(0x0f, 0x30313233343536373839616263646566)

            str := add(str, 2)
            mstore(str, 40)

            let o := add(str, 0x20)
            mstore(add(o, 40), 0)

            value := shl(96, value)

            // We write the string from rightmost digit to leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            for {
                let i := 0
            } 1 {

            } {
                let p := add(o, add(i, i))
                let temp := byte(i, value)
                mstore8(add(p, 1), mload(and(temp, 15)))
                mstore8(p, mload(shr(4, temp)))
                i := add(i, 1)
                if eq(i, 20) {
                    break
                }
            }
        }
    }

    /// @dev Returns the hex encoded string from the raw bytes.
    /// The output is encoded using 2 hexadecimal digits per byte.
    function toHexString(bytes memory raw) internal pure returns (string memory str) {
        str = toHexStringNoPrefix(raw);
        /// @solidity memory-safe-assembly
        assembly {
            let strLength := add(mload(str), 2) // Compute the length.
            mstore(str, 0x3078) // Write the "0x" prefix.
            str := sub(str, 2) // Move the pointer.
            mstore(str, strLength) // Write the length.
        }
    }

    /// @dev Returns the hex encoded string from the raw bytes.
    /// The output is encoded using 2 hexadecimal digits per byte.
    function toHexStringNoPrefix(bytes memory raw) internal pure returns (string memory str) {
        /// @solidity memory-safe-assembly
        assembly {
            let length := mload(raw)
            str := add(mload(0x40), 2) // Skip 2 bytes for the optional prefix.
            mstore(str, add(length, length)) // Store the length of the output.

            // Store "0123456789abcdef" in scratch space.
            mstore(0x0f, 0x30313233343536373839616263646566)

            let o := add(str, 0x20)
            let end := add(raw, length)

            for {

            } iszero(eq(raw, end)) {

            } {
                raw := add(raw, 1)
                mstore8(add(o, 1), mload(and(mload(raw), 15)))
                mstore8(o, mload(and(shr(4, mload(raw)), 15)))
                o := add(o, 2)
            }
            mstore(o, 0) // Zeroize the slot after the string.
            mstore(0x40, add(o, 0x20)) // Allocate the memory.
        }
    }
}

{
  "compilationTarget": {
    "contracts/badge/BadgeSignatureMint.sol": "BadgeSignatureMint"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}