// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

// File: @openzeppelin/contracts/token/ERC1155/IERC1155.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
        external
        view
        returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

// File: @openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/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));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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");
        }
    }
}

// File: @openzeppelin/contracts/token/ERC721/IERC721.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

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

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

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

// File: @openzeppelin/contracts/utils/Address.sol



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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

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

// File: @openzeppelin/contracts/utils/Context.sol



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

pragma solidity ^0.8.0;

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

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

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol



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

pragma solidity ^0.8.0;

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

// File: contracts/manager/GigaMartManager.sol



// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.19;

import {
	AssetHandler
} from "./lib/AssetHandler.sol";

import {
	IGigaMartManager,
	InitialCallerIsAlreadySet
} from "./interfaces/IGigaMartManager.sol";

/**
	@custom:benediction DEVS BENEDICAT ET PROTEGAT CONTRACTVS MEAM
	@title GigaMart Proxy Registry
	@author Tim Clancy <@_Enoch>
	@author Rostislav Khlebnikov <@catpic5buck>

	@custom:date March 17th, 2023.
*/
contract GigaMartManager is AssetHandler, IGigaMartManager { 

	/// The public name of this registry.
	string public constant name = "GigaMart Manager";

	/// A flag for whether or not the initial authorized caller has been set.
	bool public initialCallersSet = false;

	/**
		Allow the owner of this registry to grant immediate authorization to a
		set of addresses for calling proxies in this registry. This is to avoid
		waiting for the `DELAY_PERIOD` otherwise specified for further caller
		additions.

		@param _initials The array of initial callers authorized to operate in this 
			registry.

		@custom:throws InitialCallerIsAlreadySet if an intial caller is already set 
			for this proxy registry.
	*/
	function grantInitialAuthentication (
		address[] calldata _initials
	) external onlyOwner {
		if (initialCallersSet) {
			revert InitialCallerIsAlreadySet();
		}
		initialCallersSet = true;

		// Authorize each initial caller.
		for (uint256 i; i < _initials.length; ) {
			authorizedCallers[_initials[i]] = true;
			unchecked {
				++i;
			}
		}
	}
}

// File: contracts/manager/interfaces/IGigaMartManager.sol



// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.19;

/// Thrown if non-authorized account tries to execute asset transfer.
error NonAuthorized(address);

/*
Enum of ItemTypes for the transfer.
	1. ERC721 - 0
	2. ERC1155 - 1
*/
enum ItemType {
	ERC721,
	ERC1155
}

/*
	Helper Struct for restricted ERC721 or ERC1155 token transfers.

	itemType - defines the type of the Item to transfer..
	collection - address of the collection, to which the item belongs to.
	from - address, from which item is being transferred.
	to - address where item is being transferred.
	id - it of the token.
	amount - amount of the token to transfer in case of ERC1155.
*/
struct Item {
	ItemType itemType;
	address collection;
	address from;
	address to;
	uint256 id;
	uint256 amount;
}

/*
	Helper struct for restricted ERC20 token transfers.

	token - address of the token, which is being transferred.
	from - address, from which token is being transferred.
	to - address where token is being transferred.
	amount - amount of ERC20 token to transfer.
*/
struct ERC20Payment {
	address token;
	address from;
	address to;
	uint256 amount;
}

/*
	Enum of Asset types for the transfer.
	1. ERC20 - 0
	2. ERC721 - 1
	3. ERC1155 - 2
*/
enum AssetType {
	ERC20,
	ERC721,
	ERC1155
}

/*
	Helper struct for public transfers.

	assetType - defines the type of the Asset to transfer.
	collection - address of the collection, to which the asset belongs to.
	to - address where item is being transferred.
	id - it of the token.
	amount - amount of ERC20 token to transfer.
*/
struct Transfer {
	AssetType assetType;
	address collection;
	address to;
	uint256 id;
	uint256 amount;
}

/**
	@custom:benediction DEVS BENEDICAT ET PROTEGAT CONTRACTVS MEAM
	@title Asset Handler component interface.
*/
interface IAssetHandler {

	/**
		Execute restricted ERC721 or ERC1155 transfer. Reverts if caller is
		not authorized to call this function.

		@param _item Item to transfer.
		
		@custom:throws NonAuthorized.
	*/
	function transferItem (Item calldata _item) external;


	/**
		Execute multiple transfers. 

		@param _transfers Items to transfer.
	*/
	function transferMultipleItems (
		Transfer[] calldata _transfers
	) external;

	/**
		Executes restricted ERC20 transfer. Reverts if caller is
		not authorized to call this function.

		@param _token Address of the token.
		@param _from Address, from which tokens are being transferred.
		@param _to Address, to which tokens are being transferrec.
		@param _amount Amount of tokens.

		@custom:throws NonAuthorized.
	*/
	function transferERC20 (
		address _token,
		address _from,
		address _to,
		uint256 _amount
	) external;

	/**
		Executes multiple restricted ERC20 transfers. Reverts if caller is
		not authorized to call this function.

		@param _payments Array of helper structs, which contains information
		about ERC20 token transfers.

		@custom:throws NonAuthorized.
	*/
	function transferPayments (
		ERC20Payment[] calldata _payments
	) external;

}

/// Thrown if an address authentifying is already an authorized caller.
error AlreadyAuthorized ();

/// Thrown if an address is already pending authentication.
error AlreadyPendingAuthentication ();

/// Thrown if an address ending authentication has not yet started it.
error AddressHasntStartedAuth ();

/// Thrown if an address ending authentication has not delayed long enough.
error AddressHasntClearedTimelock ();


/**
	@custom:benediction DEVS BENEDICAT ET PROTEGAT CONTRACTVS MEAM
	@title Registry component interface.
*/
interface IRegistry {

	/**
		Allow the `ProxyRegistry` owner to begin the process of enabling access to
		the registry for the unauthenticated address `_unauthenticated`. Once the
		grant authentication process has begun, it is subject to the `DELAY_PERIOD`
		before the authentication process may conclude. Once concluded, the new
		address `_unauthenticated` will have access to the registry.

		@param _unauthenticated The new address to grant access to the registry.

		@custom:throws AlreadyAuthorized if the address beginning authentication is 
			already an authorized caller.
		@custom:throws AlreadyPendingAuthentication if the address beginning 
			authentication is already pending.
	*/
	function startGrantAuthentication (
		address _unauthenticated
	) external;

	/**
		Allow the `ProxyRegistry` owner to end the process of enabling access to the
		registry for the unauthenticated address `_unauthenticated`. If the required
		`DELAY_PERIOD` has passed, then the new address `_unauthenticated` will have
		access to the registry.

		@param _unauthenticated The new address to grant access to the registry.

		@custom:throws AlreadyAuthorized if the address beginning authentication is
			already an authorized caller.
		@custom:throws AddressHasntStartedAuth if the address attempting to end 
			authentication has not yet started it.
		@custom:throws AddressHasntClearedTimelock if the address attempting to end 
			authentication has not yet incurred a sufficient delay.
	*/
	function endGrantAuthentication(
		address _unauthenticated
	) external;

	/**
		Allow the owner of the `ProxyRegistry` to immediately revoke authorization
		to call proxies from the specified address.

		@param _caller The address to revoke authentication from.
	*/
	function revokeAuthentication (
		address _caller
	) external;
}

/// Thrown if any initial caller of this proxy registry is already set.
error InitialCallerIsAlreadySet ();

/**
	@custom:benediction DEVS BENEDICAT ET PROTEGAT CONTRACTVS MEAM
	@title GigaMart Manager contract interface.
*/
interface IGigaMartManager is IRegistry, IAssetHandler{
	/**
		Allow the owner of this registry to grant immediate authorization to a
		set of addresses for calling proxies in this registry. This is to avoid
		waiting for the `DELAY_PERIOD` otherwise specified for further caller
		additions.

		@param _initials The array of initial callers authorized to operate in this 
			registry.

		@custom:throws InitialCallerIsAlreadySet if an intial caller is already set 
			for this proxy registry.
	*/
	function grantInitialAuthentication (
		address[] calldata _initials
	) external;
}

// File: contracts/manager/lib/AssetHandler.sol



// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.19;

import {
	SafeERC20,
	IERC20
} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import {
	IERC721
} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";

import {
	IERC1155
} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

import {
	Registry
} from "./Registry.sol";

import { 
	IAssetHandler,
	NonAuthorized,
	Transfer,
	AssetType,
	Item,
	ItemType,
	ERC20Payment
} from "../interfaces/IGigaMartManager.sol";

/**
	@custom:benediction DEVS BENEDICAT ET PROTEGAT CONTRACTVS MEAM
	@title Asset Handler
	@author Tim Clancy <@_Enoch>
	@author Rostislav Khlebnikov <@catpic5buck>

	Asset Handler is a logic component of GigaMart Manager contract, which 
	executes ERC20, ERC721 and ERC1155 token transfers. User must approve 
	this contract with their tokens to participate in trading.
*/
contract AssetHandler is Registry, IAssetHandler {
	using SafeERC20 for IERC20;

	/**
		Private helper function, which calls ERC20 contract transfer function.

		@param _token Address of the token.
		@param _from Address, from which tokens are being transferred.
		@param _to Address, to which  tokens are being transferred.
		@param _amount Amount of the tokens.
	*/
	function _transferERC20(
		address _token,
		address _from,
		address _to,
		uint256 _amount
	) private {
		IERC20(_token).safeTransferFrom(
			_from,
			_to,
			_amount
		);
	}

	/**
		Private helper function, which calls ERC721 contract transfer function.

		@param _collection Address of the collection, token belongs to.
		@param _from Address, from which token is being transferred.
		@param _to Address, to which  token is being transferred.
		@param _id id of the tokens.
	*/
	function _transferERC721(
		address _collection,
		address _from,
		address _to,
		uint256 _id
	) private {
		IERC721(_collection).safeTransferFrom(
			_from,
			_to,
			_id,
			""
		);
	}

	/**
		Private helper function, which calls ERC1155 contract transfer function.

		@param _collection Address of the collection, token belongs to.
		@param _from Address, from which token is being transferred.
		@param _to Address, to which  token is being transferred.
		@param _id Id of the tokens.
		@param _amount Amount of the token.
	*/
	function _transferERC1155(
		address _collection,
		address _from,
		address _to,
		uint256 _id,
		uint256 _amount
	) private {
		IERC1155(_collection).safeTransferFrom(
			_from,
			_to,
			_id,
			_amount,
			""
		);
	}

	/**
		Execute restricted ERC721 or ERC1155 transfer. Reverts if caller is
		not authorized to call this function.

		@param _item Item to transfer.
		
		@custom:throws NonAuthorized.
	*/
	function transferItem(
		Item calldata _item
	) public {
		if (!authorizedCallers[msg.sender]) {
			revert NonAuthorized(msg.sender);
		}
		if ( _item.itemType == ItemType.ERC721) {
			_transferERC721(
				_item.collection,
				_item.from,
				_item.to, 
				_item.id
			);
		}
		if (_item.itemType == ItemType.ERC1155) {
			_transferERC1155(
				_item.collection,
				_item.from,
				_item.to, 
				_item.id,
				_item.amount
			);
		}
	}

	/**
		Executes restricted ERC20 transfer. Reverts if caller is
		not authorized to call this function.

		@param _token Address of the token.
		@param _from Address, from which tokens are being transferred.
		@param _to Address, to which tokens are being transferrec.
		@param _amount Amount of tokens.

		@custom:throws NonAuthorized.
	*/
	function transferERC20 (
		address _token,
		address _from,
		address _to,
		uint256 _amount
	) external {
		if (!authorizedCallers[msg.sender]) {
			revert NonAuthorized(msg.sender);
		}
		_transferERC20(
			_token,
			_from,
			_to,
			_amount
		);
	}

	/**
		Executes multiple restricted ERC20 transfers. Reverts if caller is
		not authorized to call this function.

		@param _payments Array of helper structs, which contains information
		about ERC20 token transfers.

		@custom:throws NonAuthorized.
	*/
	function transferPayments (
		ERC20Payment[] calldata _payments
	) external {
		if (!authorizedCallers[msg.sender]) {
			revert NonAuthorized(msg.sender);
		}
		for (uint256 i; i < _payments.length; ) {
			_transferERC20(
				_payments[i].token,
				_payments[i].from,
				_payments[i].to,
				_payments[i].amount
			);
			unchecked {
				++i;
			}
		}
	}

	/**
		Execute multiple transfers from msg.sender to supplied
		recipients addresses.

		@param _transfers Items to transfer.
	*/
	function transferMultipleItems (
		Transfer[] calldata _transfers
	) external {
		for (uint256 i; i < _transfers.length; ) {
			if ( _transfers[i].assetType == AssetType.ERC20) {
				_transferERC20(
					_transfers[i].collection,
					msg.sender,
					_transfers[i].to, 
					_transfers[i].amount
				);
			}
			if ( _transfers[i].assetType == AssetType.ERC721) {
				_transferERC721(
					_transfers[i].collection,
					msg.sender,
					_transfers[i].to, 
					_transfers[i].id
				);
			}
			if (_transfers[i].assetType == AssetType.ERC1155) {
				_transferERC1155(
					_transfers[i].collection,
					msg.sender,
					_transfers[i].to, 
					_transfers[i].id,
					_transfers[i].amount
				);
			}
			unchecked {
				++i;
			}
		}
	}
}	

// File: contracts/manager/lib/Registry.sol



// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.19;

import {
	Ownable
} from "@openzeppelin/contracts/access/Ownable.sol";

import {
	IRegistry,
	AlreadyAuthorized,
	AddressHasntStartedAuth,
	AddressHasntClearedTimelock,
	AlreadyPendingAuthentication
} from "../interfaces/IGigaMartManager.sol";

/**
	@custom:benediction DEVS BENEDICAT ET PROTEGAT CONTRACTVS MEAM
	@title Ownable Registry
	@author Tim Clancy <@_Enoch>
	@author Rostislav Khlebnikov <@catpic5buck>

	A proxy registry contract. This contract was originally developed
	by Project Wyvern. It has been modified to support a more modern version of
	Solidity with associated best practices. The documentation has also been
	improved to provide more clarity. Registry contract is a security component of
	GigaMart Manager contract, which manages marketplaces contracts access 
	to asset transfers.
*/
contract Registry is Ownable, IRegistry {

	/**
		This mapping relates addresses which are pending access to the registry to
		the timestamp where they began the `startGrantAuthentication` process.
	*/
	mapping ( address => uint256 ) public pendingCallers;

	/**
		This mapping relates an address to a boolean specifying whether or not it is
		allowed to call the `OwnableDelegateProxy` for any given address in the
		`proxies` mapping.
	*/
	mapping ( address => bool ) public authorizedCallers;

	/**
		A delay period which must elapse before adding an authenticated contract to
		the registry, thus allowing it to call the `OwnableDelegateProxy` for an
		address in the `proxies` mapping.

		This `ProxyRegistry` contract was designed with the intent to be owned by a
		DAO, so this delay mitigates a particular class of attack against an owning
		DAO. If at any point the value of assets accessible to the
		`OwnableDelegateProxy` contracts exceeded the cost of gaining control of the
		DAO, a malicious but rational attacker could spend (potentially 
		considerable) resources to then have access to all `OwnableDelegateProxy`
		contracts via a malicious contract upgrade. This delay period renders this
		attack ineffective by granting time for addresses to remove assets from
		compromised `OwnableDelegateProxy` contracts.

		Under its present usage, this delay period protects exchange users from a 
		malicious upgrade.
	*/
	uint256 public constant DELAY_PERIOD = 7 days;

	/**
		Allow the `ProxyRegistry` owner to begin the process of enabling access to
		the registry for the unauthenticated address `_unauthenticated`. Once the
		grant authentication process has begun, it is subject to the `DELAY_PERIOD`
		before the authentication process may conclude. Once concluded, the new
		address `_unauthenticated` will have access to the registry.

		@param _unauthenticated The new address to grant access to the registry.

		@custom:throws AlreadyAuthorized if the address beginning authentication is 
			already an authorized caller.
		@custom:throws AlreadyPendingAuthentication if the address beginning 
			authentication is already pending.
	*/
	function startGrantAuthentication (
		address _unauthenticated
	) external onlyOwner {
		if (authorizedCallers[_unauthenticated]) {
			revert AlreadyAuthorized();
		}
		if (pendingCallers[_unauthenticated] != 0) {
			revert AlreadyPendingAuthentication();
		}
		pendingCallers[_unauthenticated] = block.timestamp;
	}

	/**
		Allow the `ProxyRegistry` owner to end the process of enabling access to the
		registry for the unauthenticated address `_unauthenticated`. If the required
		`DELAY_PERIOD` has passed, then the new address `_unauthenticated` will have
		access to the registry.

		@param _unauthenticated The new address to grant access to the registry.

		@custom:throws AlreadyAuthorized if the address beginning authentication is
			already an authorized caller.
		@custom:throws AddressHasntStartedAuth if the address attempting to end 
			authentication has not yet started it.
		@custom:throws AddressHasntClearedTimelock if the address attempting to end 
			authentication has not yet incurred a sufficient delay.
	*/
	function endGrantAuthentication(
		address _unauthenticated
	) external onlyOwner {
		if (authorizedCallers[_unauthenticated]) {
			revert AlreadyAuthorized();
		}
		if (pendingCallers[_unauthenticated] == 0) {
			revert AddressHasntStartedAuth();
		}
		unchecked {
			if (
				(pendingCallers[_unauthenticated] + DELAY_PERIOD) >= block.timestamp
			) {
				revert AddressHasntClearedTimelock();
			}
		}
		pendingCallers[_unauthenticated] = 0;
		authorizedCallers[_unauthenticated] = true;
	}

	/**
		Allow the owner of the `ProxyRegistry` to immediately revoke authorization
		to call proxies from the specified address.

		@param _caller The address to revoke authentication from.
	*/
	function revokeAuthentication (
		address _caller
	) external onlyOwner {
		authorizedCallers[_caller] = false;
	}
}