// File: /contracts/NONNFT1155.sol



// SPDX-License-Identifier: MIT
// File: @openzeppelin/contracts/security/ReentrancyGuard.sol

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

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

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

pragma solidity ^0.8.0;

/**
 * @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() {
        _setOwner(_msgSender());
    }

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

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

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @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 be 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/ERC1155/IERC1155Receiver.sol

pragma solidity ^0.8.0;

/**
 * @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.
        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. 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);
}

// File: @openzeppelin/contracts/token/ERC1155/extensions/IERC1155MetadataURI.sol

pragma solidity ^0.8.0;

/**
 * @dev Interface of the optional ERC1155MetadataExtension interface, as defined
 * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155MetadataURI is IERC1155 {
    /**
     * @dev Returns the URI for token type `id`.
     *
     * If the `\{id\}` substring is present in the URI, it must be replaced by
     * clients with the actual token type ID.
     */
    function uri(uint256 id) external view returns (string memory);
}

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

pragma solidity ^0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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 functionCall(target, data, "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"
        );
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(
            data
        );
        return _verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: @openzeppelin/contracts/utils/introspection/ERC165.sol

pragma solidity ^0.8.0;

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override
        returns (bool)
    {
        return interfaceId == type(IERC165).interfaceId;
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Implementation of the basic standard multi-token.
 * See https://eips.ethereum.org/EIPS/eip-1155
 * Originally based on code by Enjin: https://github.com/enjin/erc-1155
 *
 * _Available since v3.1._
 */
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
    using Address for address;

    // Mapping from token ID to account balances
    mapping(uint256 => mapping(address => uint256)) private _balances;

    // Mapping from account to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
    string private _uri;

    /**
     * @dev See {_setURI}.
     */
    constructor(string memory uri_) {
        _setURI(uri_);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(ERC165, IERC165)
        returns (bool)
    {
        return
            interfaceId == type(IERC1155).interfaceId ||
            interfaceId == type(IERC1155MetadataURI).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC1155MetadataURI-uri}.
     *
     * This implementation returns the same URI for *all* token types. It relies
     * on the token type ID substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * Clients calling this function must replace the `\{id\}` substring with the
     * actual token type ID.
     */
    function uri(uint256) public view virtual override returns (string memory) {
        return _uri;
    }

    /**
     * @dev See {IERC1155-balanceOf}.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id)
        public
        view
        virtual
        override
        returns (uint256)
    {
        require(
            account != address(0),
            "ERC1155: balance query for the zero address"
        );
        return _balances[id][account];
    }

    /**
     * @dev See {IERC1155-balanceOfBatch}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
        public
        view
        virtual
        override
        returns (uint256[] memory)
    {
        require(
            accounts.length == ids.length,
            "ERC1155: accounts and ids 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;
    }

    /**
     * @dev See {IERC1155-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved)
        public
        virtual
        override
    {
        require(
            _msgSender() != operator,
            "ERC1155: setting approval status for self"
        );

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC1155-isApprovedForAll}.
     */
    function isApprovedForAll(address account, address operator)
        public
        view
        virtual
        override
        returns (bool)
    {
        return _operatorApprovals[account][operator];
    }

    /**
     * @dev See {IERC1155-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not owner nor approved"
        );
        _safeTransferFrom(from, to, id, amount, data);
    }

    /**
     * @dev See {IERC1155-safeBatchTransferFrom}.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: transfer caller is not owner nor approved"
        );
        _safeBatchTransferFrom(from, to, ids, amounts, data);
    }

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `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 memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

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

        uint256 fromBalance = _balances[id][from];
        require(
            fromBalance >= amount,
            "ERC1155: insufficient balance for transfer"
        );
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }
        _balances[id][to] += amount;

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

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

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - 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[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(
            ids.length == amounts.length,
            "ERC1155: ids and amounts length mismatch"
        );
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        _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 = _balances[id][from];
            require(
                fromBalance >= amount,
                "ERC1155: insufficient balance for transfer"
            );
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
            _balances[id][to] += amount;
        }

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

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

    /**
     * @dev Sets a new URI for all token types, by relying on the token type ID
     * substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * By this mechanism, any occurrence of the `\{id\}` substring in either the
     * URI or any of the amounts in the JSON file at said URI will be replaced by
     * clients with the token type ID.
     *
     * For example, the `https://token-cdn-domain/\{id\}.json` URI would be
     * interpreted by clients as
     * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
     * for token type ID 0x4cce0.
     *
     * See {uri}.
     *
     * Because these URIs cannot be meaningfully represented by the {URI} event,
     * this function emits no events.
     */
    function _setURI(string memory newuri) internal virtual {
        _uri = newuri;
    }

    /**
     * @dev Creates `amount` tokens of token type `id`, and assigns them to `account`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - If `account` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _mint(
        address account,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(account != address(0), "ERC1155: mint to the zero address");

        address operator = _msgSender();

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

        _balances[id][account] += amount;
        emit TransferSingle(operator, address(0), account, id, amount);

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

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
     *
     * 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 _mintBatch(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");
        require(
            ids.length == amounts.length,
            "ERC1155: ids and amounts length mismatch"
        );

        address operator = _msgSender();

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

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

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

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

    /**
     * @dev Destroys `amount` tokens of token type `id` from `account`
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens of token type `id`.
     */
    function _burn(
        address account,
        uint256 id,
        uint256 amount
    ) internal virtual {
        require(account != address(0), "ERC1155: burn from the zero address");

        address operator = _msgSender();

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

        uint256 accountBalance = _balances[id][account];
        require(
            accountBalance >= amount,
            "ERC1155: burn amount exceeds balance"
        );
        unchecked {
            _balances[id][account] = accountBalance - amount;
        }

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

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     */
    function _burnBatch(
        address account,
        uint256[] memory ids,
        uint256[] memory amounts
    ) internal virtual {
        require(account != address(0), "ERC1155: burn from the zero address");
        require(
            ids.length == amounts.length,
            "ERC1155: ids and amounts length mismatch"
        );

        address operator = _msgSender();

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

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

            uint256 accountBalance = _balances[id][account];
            require(
                accountBalance >= amount,
                "ERC1155: burn amount exceeds balance"
            );
            unchecked {
                _balances[id][account] = accountBalance - amount;
            }
        }

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

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning, as well as batched variants.
     *
     * The same hook is called on both single and batched variants. For single
     * transfers, the length of the `id` and `amount` arrays will be 1.
     *
     * Calling conditions (for each `id` and `amount` pair):
     *
     * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * of token type `id` will be  transferred to `to`.
     * - When `from` is zero, `amount` tokens of token type `id` will be minted
     * for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
     * will be burned.
     * - `from` and `to` are never both zero.
     * - `ids` and `amounts` have the same, non-zero length.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    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.isContract()) {
            try
                IERC1155Receiver(to).onERC1155Received(
                    operator,
                    from,
                    id,
                    amount,
                    data
                )
            returns (bytes4 response) {
                if (
                    response != IERC1155Receiver(to).onERC1155Received.selector
                ) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non ERC1155Receiver implementer");
            }
        }
    }

    function _doSafeBatchTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try
                IERC1155Receiver(to).onERC1155BatchReceived(
                    operator,
                    from,
                    ids,
                    amounts,
                    data
                )
            returns (bytes4 response) {
                if (
                    response !=
                    IERC1155Receiver(to).onERC1155BatchReceived.selector
                ) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non ERC1155Receiver implementer");
            }
        }
    }

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

        return array;
    }
}

// File: @openzeppelin/contracts/security/Pausable.sol

pragma solidity ^0.8.0;

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// File: contracts/common/meta-transactions/ContentMixin.sol

// pragma solidity 0.8.4;

abstract contract ContextMixin {
    function msgSender() internal view returns (address payable sender) {
        if (msg.sender == address(this)) {
            bytes memory array = msg.data;
            uint256 index = msg.data.length;
            assembly {
                // Load the 32 bytes word from memory with the address on the lower 20 bytes, and mask those.
                sender := and(
                    mload(add(array, index)),
                    0xffffffffffffffffffffffffffffffffffffffff
                )
            }
        } else {
            sender = payable(msg.sender);
        }
        return sender;
    }
}

// File: contracts/common/meta-transactions/Initializable.sol

// pragma solidity 0.8.4;

contract Initializable {
    bool inited = false;

    modifier initializer() {
        require(!inited, "already inited");
        _;
        inited = true;
    }
}

// File: contracts/common/meta-transactions/EIP712Base.sol

// pragma solidity 0.8.4;

contract EIP712Base is Initializable {
    struct EIP712Domain {
        string name;
        string version;
        address verifyingContract;
        bytes32 salt;
    }

    string public constant ERC712_VERSION = "1";

    bytes32 internal constant EIP712_DOMAIN_TYPEHASH =
        keccak256(
            bytes(
                "EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)"
            )
        );
    bytes32 internal domainSeperator;

    // supposed to be called once while initializing.
    // one of the contracts that inherits this contract follows proxy pattern
    // so it is not possible to do this in a constructor
    function _initializeEIP712(string memory name) internal initializer {
        _setDomainSeperator(name);
    }

    function _setDomainSeperator(string memory name) internal {
        domainSeperator = keccak256(
            abi.encode(
                EIP712_DOMAIN_TYPEHASH,
                keccak256(bytes(name)),
                keccak256(bytes(ERC712_VERSION)),
                address(this),
                bytes32(getChainId())
            )
        );
    }

    function getDomainSeperator() public view returns (bytes32) {
        return domainSeperator;
    }

    function getChainId() public view returns (uint256) {
        uint256 id;
        assembly {
            id := chainid()
        }
        return id;
    }

    /**
     * Accept message hash and returns hash message in EIP712 compatible form
     * So that it can be used to recover signer from signature signed using EIP712 formatted data
     * https://eips.ethereum.org/EIPS/eip-712
     * "\\x19" makes the encoding deterministic
     * "\\x01" is the version byte to make it compatible to EIP-191
     */
    function toTypedMessageHash(bytes32 messageHash)
        internal
        view
        returns (bytes32)
    {
        return
            keccak256(
                abi.encodePacked("\x19\x01", getDomainSeperator(), messageHash)
            );
    }
}

// File: contracts/common/meta-transactions/NativeMetaTransaction.sol

// pragma solidity 0.8.4;

contract NativeMetaTransaction is EIP712Base {
    bytes32 private constant META_TRANSACTION_TYPEHASH =
        keccak256(
            bytes(
                "MetaTransaction(uint256 nonce,address from,bytes functionSignature)"
            )
        );
    event MetaTransactionExecuted(
        address userAddress,
        address payable relayerAddress,
        bytes functionSignature
    );
    mapping(address => uint256) nonces;

    /*
     * Meta transaction structure.
     * No point of including value field here as if user is doing value transfer then he has the funds to pay for gas
     * He should call the desired function directly in that case.
     */
    struct MetaTransaction {
        uint256 nonce;
        address from;
        bytes functionSignature;
    }

    function executeMetaTransaction(
        address userAddress,
        bytes memory functionSignature,
        bytes32 sigR,
        bytes32 sigS,
        uint8 sigV
    ) external payable returns (bytes memory) {
        MetaTransaction memory metaTx = MetaTransaction({
            nonce: nonces[userAddress],
            from: userAddress,
            functionSignature: functionSignature
        });

        require(
            verify(userAddress, metaTx, sigR, sigS, sigV),
            "Signer and signature do not match"
        );

        // increase nonce for user (to avoid re-use)
        nonces[userAddress] += 1;

        emit MetaTransactionExecuted(
            userAddress,
            payable(msg.sender),
            functionSignature
        );

        // Append userAddress and relayer address at the end to extract it from calling context
        (bool success, bytes memory returnData) = address(this).call(
            abi.encodePacked(functionSignature, userAddress)
        );
        require(success, "Function call not successful");

        return returnData;
    }

    function hashMetaTransaction(MetaTransaction memory metaTx)
        internal
        pure
        returns (bytes32)
    {
        return
            keccak256(
                abi.encode(
                    META_TRANSACTION_TYPEHASH,
                    metaTx.nonce,
                    metaTx.from,
                    keccak256(metaTx.functionSignature)
                )
            );
    }

    function getNonce(address user) public view returns (uint256 nonce) {
        nonce = nonces[user];
    }

    function verify(
        address signer,
        MetaTransaction memory metaTx,
        bytes32 sigR,
        bytes32 sigS,
        uint8 sigV
    ) internal view returns (bool) {
        require(signer != address(0), "NativeMetaTransaction: INVALID_SIGNER");
        return
            signer ==
            ecrecover(
                toTypedMessageHash(hashMetaTransaction(metaTx)),
                sigV,
                sigR,
                sigS
            );
    }
}

// File: contracts/ERC1155Tradable.sol

// pragma solidity 0.8.4;

contract OwnableDelegateProxy {

}

contract ProxyRegistry {
    mapping(address => OwnableDelegateProxy) public proxies;
}

/**
 * @title ERC1155Tradable
 * ERC1155Tradable - ERC1155 contract that whitelists an operator address, has create and mint functionality, and supports useful standards from OpenZeppelin,
  like exists(), name(), symbol(), and totalSupply()
 */
contract ERC1155Tradable is
    ContextMixin,
    ERC1155,
    NativeMetaTransaction,
    Ownable,
    Pausable
{
    using Address for address;

    // Proxy registry address
    address public proxyRegistryAddress;
    // Contract name
    string public name;
    // Contract symbol
    string public symbol;

    // Mapping from token ID to account balances
    mapping(uint256 => mapping(address => uint256)) private balances;

    mapping(uint256 => uint256) private _supply;

    constructor(
        string memory _name,
        string memory _symbol,
        address _proxyRegistryAddress
    ) ERC1155("") {
        name = _name;
        symbol = _symbol;
        proxyRegistryAddress = _proxyRegistryAddress;
        _initializeEIP712(name);
    }

    /**
     * @dev Throws if called by any account other than the owner or their proxy
     */
    modifier onlyOwnerOrProxy() {
        require(
            _isOwnerOrProxy(_msgSender()),
            "ERC1155Tradable#onlyOwner: CALLER_IS_NOT_OWNER"
        );
        _;
    }

    /**
     * @dev Throws if called by any account other than _from or their proxy
     */
    modifier onlyApproved(address _from) {
        require(
            _from == _msgSender() || isApprovedForAll(_from, _msgSender()),
            "ERC1155Tradable#onlyApproved: CALLER_NOT_ALLOWED"
        );
        _;
    }

    function _isOwnerOrProxy(address _address) internal view returns (bool) {
        return owner() == _address || _isProxyForUser(owner(), _address);
    }

    function pause() external onlyOwnerOrProxy {
        _pause();
    }

    function unpause() external onlyOwnerOrProxy {
        _unpause();
    }

    /**
     * @dev See {IERC1155-balanceOf}.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id)
        public
        view
        virtual
        override
        returns (uint256)
    {
        require(
            account != address(0),
            "ERC1155: balance query for the zero address"
        );
        return balances[id][account];
    }

    /**
     * @dev See {IERC1155-balanceOfBatch}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
        public
        view
        virtual
        override
        returns (uint256[] memory)
    {
        require(
            accounts.length == ids.length,
            "ERC1155: accounts and ids 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;
    }

    /**
     * @dev Returns the total quantity for a token ID
     * @param _id uint256 ID of the token to query
     * @return amount of token in existence
     */
    function totalSupply(uint256 _id) public view returns (uint256) {
        return _supply[_id];
    }

    /**
     * Override isApprovedForAll to whitelist user's CsPort proxy accounts to enable gas-free listings.
     */
    function isApprovedForAll(address _owner, address _operator)
        public
        view
        override
        returns (bool isOperator)
    {
        // Whitelist CsPort proxy contracts for easy trading.
        if (_isProxyForUser(_owner, _operator)) {
            return true;
        }

        return super.isApprovedForAll(_owner, _operator);
    }

    /**
     * @dev See {IERC1155-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) public virtual override whenNotPaused onlyApproved(from) {
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

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

        uint256 fromBalance = balances[id][from];
        require(
            fromBalance >= amount,
            "ERC1155: insufficient balance for transfer"
        );
        balances[id][from] = fromBalance - amount;
        balances[id][to] += amount;

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

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

    /**
     * @dev See {IERC1155-safeBatchTransferFrom}.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public virtual override whenNotPaused onlyApproved(from) {
        require(
            ids.length == amounts.length,
            "ERC1155: IDS_AMOUNTS_LENGTH_MISMATCH"
        );
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        _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 = balances[id][from];
            require(
                fromBalance >= amount,
                "ERC1155: insufficient balance for transfer"
            );
            balances[id][from] = fromBalance - amount;
            balances[id][to] += amount;
        }

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

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

    /**
     * @dev Hook to be called right before minting
     * @param _id          Token ID to mint
     * @param _quantity    Amount of tokens to mint
     */
    function _beforeMint(uint256 _id, uint256 _quantity) internal virtual {}

    /**
     * @dev Mints some amount of tokens to an address
     * @param _to          Address of the future owner of the token
     * @param _id          Token ID to mint
     * @param _quantity    Amount of tokens to mint
     * @param _data        Data to pass if receiver is contract
     */
    function mint(
        address _to,
        uint256 _id,
        uint256 _quantity,
        bytes memory _data
    ) public virtual onlyOwnerOrProxy {
        _mint(_to, _id, _quantity, _data);
    }

    function mint(
        address _from,
        address _to,
        uint256 _id,
        uint256 _quantity,
        bytes memory _data
    ) internal virtual onlyOwnerOrProxy {
        _mint(_from, _to, _id, _quantity, _data);
    }

    /**
     * @dev Mint tokens for each id in _ids
     * @param _to          The address to mint tokens to
     * @param _ids         Array of ids to mint
     * @param _quantities  Array of amounts of tokens to mint per id
     * @param _data        Data to pass if receiver is contract
     */
    function batchMint(
        address _to,
        uint256[] memory _ids,
        uint256[] memory _quantities,
        bytes memory _data
    ) public virtual onlyOwnerOrProxy {
        _batchMint(_to, _ids, _quantities, _data);
    }

    /**
     * @dev Burns amount of a given token id
     * @param _from          The address to burn tokens from
     * @param _id          Token ID to burn
     * @param _quantity    Amount to burn
     */
    function burn(
        address _from,
        uint256 _id,
        uint256 _quantity
    ) public virtual onlyApproved(_from) {
        _burn(_from, _id, _quantity);
    }

    /**
     * @dev Burns tokens for each id in _ids
     * @param _from          The address to burn tokens from
     * @param _ids         Array of token ids to burn
     * @param _quantities  Array of the amount to be burned
     */
    function batchBurn(
        address _from,
        uint256[] memory _ids,
        uint256[] memory _quantities
    ) public virtual onlyApproved(_from) {
        _burnBatch(_from, _ids, _quantities);
    }

    /**
     * @dev Returns whether the specified token is minted
     * @param _id uint256 ID of the token to query the existence of
     * @return bool whether the token exists
     */
    function exists(uint256 _id) public view returns (bool) {
        return _supply[_id] > 0;
    }

    // Overrides ERC1155 _mint to allow changing birth events to creator transfers,
    // and to set _supply
    function _mint(
        address _to,
        uint256 _id,
        uint256 _amount,
        bytes memory _data
    ) internal virtual override whenNotPaused {
        address operator = _msgSender();

        _beforeTokenTransfer(
            operator,
            address(0),
            _to,
            asSingletonArray(_id),
            asSingletonArray(_amount),
            _data
        );

        _beforeMint(_id, _amount);

        // Add _amount
        balances[_id][_to] += _amount;
        _supply[_id] += _amount;

        // Origin of token will be the _from parameter
        address origin = _origin(_id);

        // Emit event
        emit TransferSingle(operator, origin, _to, _id, _amount);

        // Calling onReceive method if recipient is contract
        doSafeTransferAcceptanceCheck(
            operator,
            origin,
            _to,
            _id,
            _amount,
            _data
        );
    }

    function _mint(
        address _from,
        address _to,
        uint256 _id,
        uint256 _amount,
        bytes memory _data
    ) internal virtual whenNotPaused {
        address operator = _msgSender();

        _beforeTokenTransfer(
            operator,
            address(0),
            _to,
            asSingletonArray(_id),
            asSingletonArray(_amount),
            _data
        );

        _beforeMint(_id, _amount);

        // Add _amount
        balances[_id][_to] += _amount;
        _supply[_id] += _amount;

        // Origin of token will be the _from parameter
        address origin = _origin(_id);

        // Emit event
        emit TransferSingle(operator, _from, _to, _id, _amount);

        // Calling onReceive method if recipient is contract
        doSafeTransferAcceptanceCheck(
            operator,
            origin,
            _to,
            _id,
            _amount,
            _data
        );
    }

    // Overrides ERC1155MintBurn to change the batch birth events to creator transfers, and to set _supply
    function _batchMint(
        address _to,
        uint256[] memory _ids,
        uint256[] memory _amounts,
        bytes memory _data
    ) internal virtual whenNotPaused {
        require(
            _ids.length == _amounts.length,
            "ERC1155Tradable#batchMint: INVALID_ARRAYS_LENGTH"
        );

        // Number of mints to execute
        uint256 nMint = _ids.length;

        // Origin of tokens will be the _from parameter
        address origin = _origin(_ids[0]);

        address operator = _msgSender();

        _beforeTokenTransfer(operator, address(0), _to, _ids, _amounts, _data);

        // Executing all minting
        for (uint256 i = 0; i < nMint; i++) {
            // Update storage balance
            uint256 id = _ids[i];
            uint256 amount = _amounts[i];
            _beforeMint(id, amount);
            require(
                _origin(id) == origin,
                "ERC1155Tradable#batchMint: MULTIPLE_ORIGINS_NOT_ALLOWED"
            );
            balances[id][_to] += amount;
            _supply[id] += amount;
        }

        // Emit batch mint event
        emit TransferBatch(operator, origin, _to, _ids, _amounts);

        // Calling onReceive method if recipient is contract
        doSafeBatchTransferAcceptanceCheck(
            operator,
            origin,
            _to,
            _ids,
            _amounts,
            _data
        );
    }

    /**
     * @dev Destroys `amount` tokens of token type `id` from `account`
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens of token type `id`.
     */
    function _burn(
        address account,
        uint256 id,
        uint256 amount
    ) internal override whenNotPaused {
        require(account != address(0), "ERC1155#_burn: BURN_FROM_ZERO_ADDRESS");
        require(amount > 0, "ERC1155#_burn: AMOUNT_LESS_THAN_ONE");

        address operator = _msgSender();

        _beforeTokenTransfer(
            operator,
            account,
            address(0),
            asSingletonArray(id),
            asSingletonArray(amount),
            ""
        );

        uint256 accountBalance = balances[id][account];
        require(
            accountBalance >= amount,
            "ERC1155#_burn: AMOUNT_EXCEEDS_BALANCE"
        );
        balances[id][account] = accountBalance - amount;
        _supply[id] -= amount;

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

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     */
    function _burnBatch(
        address account,
        uint256[] memory ids,
        uint256[] memory amounts
    ) internal override whenNotPaused {
        require(account != address(0), "ERC1155: BURN_FROM_ZERO_ADDRESS");
        require(
            ids.length == amounts.length,
            "ERC1155: IDS_AMOUNTS_LENGTH_MISMATCH"
        );

        address operator = _msgSender();

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

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

            uint256 accountBalance = balances[id][account];
            require(
                accountBalance >= amount,
                "ERC1155#_burnBatch: AMOUNT_EXCEEDS_BALANCE"
            );
            balances[id][account] = accountBalance - amount;
            _supply[id] -= amount;
        }

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

    // Override this to change birth events' _from address
    function _origin(
        uint256 /* _id */
    ) internal view virtual returns (address) {
        return address(0);
    }

    // PROXY HELPER METHODS

    function _isProxyForUser(address _user, address _address)
        internal
        view
        virtual
        returns (bool)
    {
        if (!proxyRegistryAddress.isContract()) {
            return false;
        }
        ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress);
        return address(proxyRegistry.proxies(_user)) == _address;
    }

    // Copied from OpenZeppelin
    // https://github.com/OpenZeppelin/openzeppelin-contracts/blob/c3ae4790c71b7f53cc8fff743536dcb7031fed74/contracts/token/ERC1155/ERC1155.sol#L394
    function doSafeTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try
                IERC1155Receiver(to).onERC1155Received(
                    operator,
                    from,
                    id,
                    amount,
                    data
                )
            returns (bytes4 response) {
                if (
                    response != IERC1155Receiver(to).onERC1155Received.selector
                ) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non ERC1155Receiver implementer");
            }
        }
    }

    // Copied from OpenZeppelin
    // https://github.com/OpenZeppelin/openzeppelin-contracts/blob/c3ae4790c71b7f53cc8fff743536dcb7031fed74/contracts/token/ERC1155/ERC1155.sol#L417
    function doSafeBatchTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal {
        if (to.isContract()) {
            try
                IERC1155Receiver(to).onERC1155BatchReceived(
                    operator,
                    from,
                    ids,
                    amounts,
                    data
                )
            returns (bytes4 response) {
                if (
                    response !=
                    IERC1155Receiver(to).onERC1155BatchReceived.selector
                ) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non ERC1155Receiver implementer");
            }
        }
    }

    // Copied from OpenZeppelin
    // https://github.com/OpenZeppelin/openzeppelin-contracts/blob/c3ae4790c71b7f53cc8fff743536dcb7031fed74/contracts/token/ERC1155/ERC1155.sol#L440
    function asSingletonArray(uint256 element)
        private
        pure
        returns (uint256[] memory)
    {
        uint256[] memory array = new uint256[](1);
        array[0] = element;

        return array;
    }

    /**
     * This is used instead of msg.sender as transactions won't be sent by the original token owner, but by CsPort.
     */
    function _msgSender() internal view override returns (address sender) {
        return ContextMixin.msgSender();
    }
}

// File: contracts/AssetContract.sol

// pragma solidity 0.8.4;

/**
 * @title AssetContract
 * AssetContract - A contract for easily creating non-fungible assets on CsPort.
 */
contract AssetContract is ERC1155Tradable {
    event PermanentURI(string _value, uint256 indexed _id);

    uint256 constant TOKEN_SUPPLY_CAP = 1;

    string public templateURI;

    // Optional mapping for token URIs
    mapping(uint256 => string) private _tokenURI;

    // Mapping for whether a token URI is set permanently
    mapping(uint256 => bool) private _isPermanentURI;

    modifier onlyTokenAmountOwned(
        address _from,
        uint256 _id,
        uint256 _quantity
    ) {
        require(
            _ownsTokenAmount(_from, _id, _quantity),
            "AssetContract#onlyTokenAmountOwned: ONLY_TOKEN_AMOUNT_OWNED_ALLOWED"
        );
        _;
    }

    /**
     * @dev Require the URI to be impermanent
     */
    modifier onlyImpermanentURI(uint256 id) {
        require(
            !isPermanentURI(id),
            "AssetContract#onlyImpermanentURI: URI_CANNOT_BE_CHANGED"
        );
        _;
    }

    constructor(
        string memory _name,
        string memory _symbol,
        address _proxyRegistryAddress,
        string memory _templateURI
    ) ERC1155Tradable(_name, _symbol, _proxyRegistryAddress) {
        if (bytes(_templateURI).length > 0) {
            setTemplateURI(_templateURI);
        }
    }

    function version() public pure returns (string memory) {
        return "2.1.0";
    }

    /**
     * @dev Require _from to own a specified quantity of the token
     */
    function _ownsTokenAmount(
        address _from,
        uint256 _id,
        uint256 _quantity
    ) internal view returns (bool) {
        return balanceOf(_from, _id) >= _quantity;
    }

    /**
     * Compat for factory interfaces on CsPort
     * Indicates that this contract can return balances for
     * tokens that haven't been minted yet
     */
    function supportsFactoryInterface() public pure returns (bool) {
        return true;
    }

    function setTemplateURI(string memory _uri) public onlyOwnerOrProxy {
        templateURI = _uri;
    }

    function setURI(uint256 _id, string memory _uri)
        public
        virtual
        onlyOwnerOrProxy
        onlyImpermanentURI(_id)
    {
        _setURI(_id, _uri);
    }

    function setPermanentURI(uint256 _id, string memory _uri)
        public
        virtual
        onlyOwnerOrProxy
        onlyImpermanentURI(_id)
    {
        _setPermanentURI(_id, _uri);
    }

    function isPermanentURI(uint256 _id) public view returns (bool) {
        return _isPermanentURI[_id];
    }

    function uri(uint256 _id) public view override returns (string memory) {
        string memory tokenUri = _tokenURI[_id];
        if (bytes(tokenUri).length != 0) {
            return tokenUri;
        }
        return templateURI;
    }

    function balanceOf(address _owner, uint256 _id)
        public
        view
        virtual
        override
        returns (uint256)
    {
        uint256 balance = super.balanceOf(_owner, _id);
        return
            _isCreatorOrProxy(_id, _owner)
                ? balance + _remainingSupply(_id)
                : balance;
    }

    function safeTransferFrom(
        address _from,
        address _to,
        uint256 _id,
        uint256 _amount,
        bytes memory _data
    ) public override {
        uint256 mintedBalance = super.balanceOf(_from, _id);
        if (
            mintedBalance < _amount &&
            TokenIdentifiers.tokenCreator(_id) == _from
        ) {
            // Only mint what _from doesn't already have
            mint(_from, _to, _id, _amount - mintedBalance, _data);
            if (mintedBalance > 0) {
                super.safeTransferFrom(_from, _to, _id, mintedBalance, _data);
            }
        } else {
            super.safeTransferFrom(_from, _to, _id, _amount, _data);
        }
    }

    function safeBatchTransferFrom(
        address _from,
        address _to,
        uint256[] memory _ids,
        uint256[] memory _amounts,
        bytes memory _data
    ) public override {
        require(
            _ids.length == _amounts.length,
            "AssetContract#safeBatchTransferFrom: INVALID_ARRAYS_LENGTH"
        );
        for (uint256 i = 0; i < _ids.length; i++) {
            safeTransferFrom(_from, _to, _ids[i], _amounts[i], _data);
        }
    }

    function _beforeMint(uint256 _id, uint256 _quantity)
        internal
        view
        override
    {
        require(
            _quantity <= _remainingSupply(_id),
            "AssetContract#_beforeMint: QUANTITY_EXCEEDS_TOKEN_SUPPLY_CAP"
        );
    }

    // Overrides ERC1155Tradable burn to check for quantity owned
    function burn(
        address _from,
        uint256 _id,
        uint256 _quantity
    ) public override onlyTokenAmountOwned(_from, _id, _quantity) {
        super.burn(_from, _id, _quantity);
    }

    // Overrides ERC1155Tradable batchBurn to check for quantity owned
    function batchBurn(
        address _from,
        uint256[] memory _ids,
        uint256[] memory _quantities
    ) public override {
        for (uint256 i = 0; i < _ids.length; i++) {
            require(
                _ownsTokenAmount(_from, _ids[i], _quantities[i]),
                "AssetContract#batchBurn: ONLY_TOKEN_AMOUNT_OWNED_ALLOWED"
            );
        }
        super.batchBurn(_from, _ids, _quantities);
    }

    function _mint(
        address _to,
        uint256 _id,
        uint256 _quantity,
        bytes memory _data
    ) internal override {
        super._mint(_to, _id, _quantity, _data);
        if (_data.length > 1) {
            _setURI(_id, string(_data));
        }
    }

    function _isCreatorOrProxy(uint256, address _address)
        internal
        view
        virtual
        returns (bool)
    {
        return _isOwnerOrProxy(_address);
    }

    function _remainingSupply(uint256 _id)
        internal
        view
        virtual
        returns (uint256)
    {
        return TOKEN_SUPPLY_CAP - totalSupply(_id);
    }

    // Override ERC1155Tradable for birth events
    function _origin(
        uint256 /* _id */
    ) internal view virtual override returns (address) {
        return owner();
    }

    function _batchMint(
        address _to,
        uint256[] memory _ids,
        uint256[] memory _quantities,
        bytes memory _data
    ) internal virtual override {
        super._batchMint(_to, _ids, _quantities, _data);
        if (_data.length > 1) {
            for (uint256 i = 0; i < _ids.length; i++) {
                _setURI(_ids[i], string(_data));
            }
        }
    }

    function _setURI(uint256 _id, string memory _uri) internal {
        _tokenURI[_id] = _uri;
        emit URI(_uri, _id);
    }

    function _setPermanentURI(uint256 _id, string memory _uri)
        internal
        virtual
    {
        require(
            bytes(_uri).length > 0,
            "AssetContract#setPermanentURI: ONLY_VALID_URI"
        );
        _isPermanentURI[_id] = true;
        _setURI(_id, _uri);
        emit PermanentURI(_uri, _id);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @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);
    }
}

// File: contracts/TokenIdentifiers.sol

// pragma solidity 0.8.4;

/*
  DESIGN NOTES:
  Token ids are a concatenation of:
 * creator: hex address of the creator of the token. 160 bits
 * index: Index for this token (the regular ID), up to 2^56 - 1. 56 bits
 * supply: Supply cap for this token, up to 2^40 - 1 (1 trillion).  40 bits

*/
/**
 * @title TokenIdentifiers
 * support for authentication and metadata for token ids
 */
library TokenIdentifiers {
    uint8 constant INDEX_BITS = 56;
    uint8 constant SUPPLY_BITS = 40;

    uint256 constant SUPPLY_MASK = (uint256(1) << SUPPLY_BITS) - 1;

    function tokenMaxSupply(uint256 _id) internal pure returns (uint256) {
        return _id & SUPPLY_MASK;
    }

    function tokenCreator(uint256 _id) internal pure returns (address) {
        return address(uint160(_id >> (INDEX_BITS + SUPPLY_BITS)));
    }
}

// File: contracts/NONNFT1155.sol

// pragma solidity 0.8.4;

/**
 * @title NONNFT1155
 */
contract NONNFT1155 is AssetContract, ReentrancyGuard {
    mapping(address => bool) public sharedProxyAddresses;

    struct Ownership {
        uint256 id;
        address owner;
    }

    using TokenIdentifiers for uint256;

    event CreatorChanged(uint256 indexed _id, address indexed _creator);

    event SetProxyRegistryAddress(address proxyRegistryAddress);

    event AddSharedProxyAddress(address sharedProxyAddress);

    event RemoveSharedProxyAddress(address sharedProxyAddress);

    mapping(uint256 => address) internal _creatorOverride;

    /**
     * @dev Require msg.sender to be the creator of the token id
     */
    modifier creatorOnly(uint256 _id) {
        require(
            _isCreatorOrProxy(_id, _msgSender()),
            "NONNFT1155#creatorOnly: ONLY_CREATOR_ALLOWED"
        );
        _;
    }

    /**
     * @dev Require the caller to own the full supply of the token
     */
    modifier onlyFullTokenOwner(uint256 _id) {
        require(
            _ownsTokenAmount(_msgSender(), _id, _id.tokenMaxSupply()),
            "NONNFT1155#onlyFullTokenOwner: ONLY_FULL_TOKEN_OWNER_ALLOWED"
        );
        _;
    }

    constructor(
        string memory _name,
        string memory _symbol,
        address _proxyRegistryAddress,
        string memory _templateURI
    ) AssetContract(_name, _symbol, _proxyRegistryAddress, _templateURI) {}

    /**
     * @dev Allows owner to change the proxy registry
     */
    function setProxyRegistryAddress(address _address) public onlyOwnerOrProxy {
        proxyRegistryAddress = _address;
        emit SetProxyRegistryAddress(_address);
    }

    /**
     * @dev Allows owner to add a shared proxy address
     */
    function addSharedProxyAddress(address _address) public onlyOwnerOrProxy {
        sharedProxyAddresses[_address] = true;
        emit AddSharedProxyAddress(_address);
    }

    /**
     * @dev Allows owner to remove a shared proxy address
     */
    function removeSharedProxyAddress(address _address)
        public
        onlyOwnerOrProxy
    {
        delete sharedProxyAddresses[_address];
        emit RemoveSharedProxyAddress(_address);
    }

    function mint(
        address _to,
        uint256 _id,
        uint256 _quantity,
        bytes memory _data
    ) public override nonReentrant creatorOnly(_id) {
        _mint(_to, _id, _quantity, _data);
    }

    function mint(
        address _from,
        address _to,
        uint256 _id,
        uint256 _quantity,
        bytes memory _data
    ) internal override nonReentrant creatorOnly(_id) {
        _mint(_from, _to, _id, _quantity, _data);
    }

    function batchMint(
        address _to,
        uint256[] memory _ids,
        uint256[] memory _quantities,
        bytes memory _data
    ) public override nonReentrant {
        for (uint256 i = 0; i < _ids.length; i++) {
            require(
                _isCreatorOrProxy(_ids[i], _msgSender()),
                "NONNFT1155#_batchMint: ONLY_CREATOR_ALLOWED"
            );
        }
        _batchMint(_to, _ids, _quantities, _data);
    }

    /////////////////////////////////
    // CONVENIENCE CREATOR METHODS //
    /////////////////////////////////

    /**
     * @dev Will update the URI for the token
     * @param _id The token ID to update. msg.sender must be its creator, the uri must be impermanent,
     *            and the creator must own all of the token supply
     * @param _uri New URI for the token.
     */
    function setURI(uint256 _id, string memory _uri)
        public
        override
        creatorOnly(_id)
        onlyImpermanentURI(_id)
        onlyFullTokenOwner(_id)
    {
        _setURI(_id, _uri);
    }

    /**
     * @dev setURI, but permanent
     */
    function setPermanentURI(uint256 _id, string memory _uri)
        public
        override
        creatorOnly(_id)
        onlyImpermanentURI(_id)
        onlyFullTokenOwner(_id)
    {
        _setPermanentURI(_id, _uri);
    }

    /**
     * @dev Change the creator address for given token
     * @param _to   Address of the new creator
     * @param _id  Token IDs to change creator of
     */
    function setCreator(uint256 _id, address _to) public creatorOnly(_id) {
        require(_to != address(0), "NONNFT1155#setCreator: INVALID_ADDRESS.");
        _creatorOverride[_id] = _to;
        emit CreatorChanged(_id, _to);
    }

    /**
     * @dev Get the creator for a token
     * @param _id   The token id to look up
     */
    function creator(uint256 _id) public view returns (address) {
        if (_creatorOverride[_id] != address(0)) {
            return _creatorOverride[_id];
        } else {
            return _id.tokenCreator();
        }
    }

    /**
     * @dev Get the maximum supply for a token
     * @param _id   The token id to look up
     */
    function maxSupply(uint256 _id) public pure returns (uint256) {
        return _id.tokenMaxSupply();
    }

    // Override ERC1155Tradable for birth events
    function _origin(uint256 _id) internal pure override returns (address) {
        return _id.tokenCreator();
    }

    function _requireMintable(address _address, uint256 _id) internal view {
        require(
            _isCreatorOrProxy(_id, _address),
            "NONNFT1155#_requireMintable: ONLY_CREATOR_ALLOWED"
        );
    }

    function _remainingSupply(uint256 _id)
        internal
        view
        override
        returns (uint256)
    {
        return maxSupply(_id) - totalSupply(_id);
    }

    function _isCreatorOrProxy(uint256 _id, address _address)
        internal
        view
        override
        returns (bool)
    {
        address creator_ = creator(_id);
        return creator_ == _address || _isProxyForUser(creator_, _address);
    }

    // Overrides ERC1155Tradable to allow a shared proxy address
    function _isProxyForUser(address _user, address _address)
        internal
        view
        override
        returns (bool)
    {
        if (sharedProxyAddresses[_address]) {
            return true;
        }
        return super._isProxyForUser(_user, _address);
    }
}

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