Contract 0xa8D3F65b6E2922fED1430b77aC2b557e1fa8DA4a 3

 

Contract Overview

Balance:
0 Ether

EtherValue:
$0.00

Token:
Txn Hash
Method
Block
From
To
Value
0xbf3c55477a285d4d012542a371b98a4bfc364034f23b288babc13f20c388577dLend156292332022-09-28 3:45:112 days 19 hrs ago0xf1b622da801ee602e3ffee5262108dd2b9149e88 IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00148476 10.36614884
0x6d16dfe3fc4aad4cb15579c39b2c2c765cc5e5e6cfe9bcb7750934a6b2bed687Lend156080852022-09-25 4:45:475 days 18 hrs agoENS Name 011818.eth IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.0008183 7.47177911
0xc9c858e79d098995962c015bcc5e6f1fbe353760bbee581e2fcde000da6714c5Rent156080362022-09-25 4:35:595 days 18 hrs agoENS Name 011818.eth IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00087753 7.21772796
0x8375eaed38b1e21eb40c11e3952ec49aa3deddc2b956e70475920dd92847033eLend155983612022-09-23 20:13:357 days 2 hrs ago0xdc2ac69fd329fbea2af7f38d19684a62ca760ae8 IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00105982 7.15013264
0x3493cae099910a172570ed99605ce715bed41078e17a5825fbe6d89687946f97Stop Lend155879012022-09-22 9:11:118 days 14 hrs agoENS Name 080660.eth IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00042784 5.36315471
0x532ab4df658327145b664b4004a46fbff2cb6a1b1e758ef77edee19f5eab2974Rent155786992022-09-21 1:56:239 days 21 hrs ago0x9f4de26feef04adb5218dbe6752f71dd87496e8c IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00087341 7.18314097
0xca8127c597a4edc55acadc14bb90757233cf78ea5090628ca1717cb82f78b04eLend155786652022-09-21 1:49:359 days 21 hrs ago0x910bfe74240705d25918e1be022a1c303b004748 IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00083044 7.24009075
0xc5efe47c0aeb59f998e0f72525fa93647878b4c7c902b4a9319fd2494d9449b2Lend155778562022-09-20 23:06:5910 days 5 mins ago0x0c49f6f69d2d9650c92a39d8e35c2bd915d5cfa1 IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.0010723 7.47852846
0x8ea5141aaaa5279107d715dd0c2258f63fe9da6dde9682d71dd6bd10d27159a6Lend155724352022-09-20 4:52:2310 days 18 hrs ago0xb75dcd3c785ba6a18ae89a8a91b54e554a9622bd IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.0003302 3
0xb147ed16b53549491cc04c59725444c6aef446c6055c974f64470716987a7fa3Rent155685692022-09-19 15:51:5911 days 7 hrs ago0x98111289e72f43e528f9c0fe879f56805b57efe5 IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00081899 7.95097313
0x685b0bd6f81d31bdeecdc7be255ccc89ca82dde7ba16c8b5d5b79a658e8ee27aRent155409102022-09-15 18:36:1115 days 4 hrs ago0xa8c73ee57c268872b9d2d7a90e5f2e31af8493fb IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00150848 12.3694171
0x6258fbf1d0882048667ac29b70d39b945fc699b39ce472ec0a194c37ed48dd8cStop Lend155310022022-09-14 4:39:2516 days 18 hrs ago0xb75dcd3c785ba6a18ae89a8a91b54e554a9622bd IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00128331 11.45455385
0x05d81df3baa30985266c330fdeb4b130dde211b83459dafcda471205af1016deLend155309622022-09-14 4:30:5916 days 18 hrs ago0xb75dcd3c785ba6a18ae89a8a91b54e554a9622bd IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00235375 14.82719692
0x1c585126f864be86e9d46b88c74599343d7dba19e6099abcf968eb126db36fadLend155250752022-09-13 5:03:2917 days 18 hrs agoENS Name custardcake.eth IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00065102 6.59700119
0x48a64a318fa4d11d6d0c0047edd75d4384a9bf22032b52d81571783ea4932913Stop Lend154898802022-09-07 10:53:0123 days 12 hrs ago0xa555202323869db0bea68e8da344defaa554afcf IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00073037 10.62830642
0xd22a98dea702df1811dd779aaf0b3393585d095ce39bb262fa96078c7f98d545Lend154896652022-09-07 10:04:2423 days 13 hrs ago0xa555202323869db0bea68e8da344defaa554afcf IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00213207 18.07701032
0xc73ec5cb4ce39d025f20584d24b7e6a6336a63823b107ce29ea8e4481100a223Lend154891032022-09-07 7:44:5223 days 15 hrs ago0xcbeeca5083c452ede1e316d02422a568ce96ed1a IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.0011693 9.83746424
0xdf37e6396f75dd1a868948cc08cca594dd39b3cf5a215283f3ec88135db56be0Lend154789182022-09-05 16:43:5425 days 6 hrs ago0x2785b65ffd1a35586c6dc4fd2aba2789949633e0 IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00249435 26.15918668
0x246d33ceeffb4a4eb3951f7855e8e95a39924e6d46e5acd726bdb2acf2f816a1Lend154786672022-09-05 15:45:5125 days 7 hrs ago0x2785b65ffd1a35586c6dc4fd2aba2789949633e0 IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00297134 26.42302128
0x2f464c52909ff19467a84cc352f5b517c441bf96cc38adb2aa6bbf06d7c211cfStop Lend154767322022-09-05 8:14:0725 days 14 hrs ago0xcbeeca5083c452ede1e316d02422a568ce96ed1a IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.0007735 5.98988983
0x1d004efd33a0e76d35718cfd25a50625c3770694e8877ea01e959071ee993ac6Lend154766962022-09-05 8:04:1325 days 15 hrs ago0xcbeeca5083c452ede1e316d02422a568ce96ed1a IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00104247 7.26842048
0x934f765984dd9aca339cd2ee67042b006626844e6cac875dcfdc1ad24e864825Stop Lend154667222022-09-03 17:38:1727 days 5 hrs ago0x5a594d761ee1805a217c37c598e1d04e019e7484 IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00085209 6.59847401
0xaaaca6bc9356f27374c08dbf220df55472ec4f5ded99123afb872112cd25e56eClaim Rent154651392022-09-03 11:32:3227 days 11 hrs agoENS Name vagary.eth IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00043584 5
0x39f51f5e0b87b361360caf21bfd507cb0bbf64b312cd63482cd1cc61e439b4c9Lend154579042022-09-02 7:40:5728 days 15 hrs agoENS Name zhouchangjun.eth IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00171775 15.41750339
0xfd8dcaed0f27bb2729302334c3f022477d653c7c6c490055ab671fb7c28aa4c7Rent154490762022-08-31 21:53:4230 days 1 hr ago0xb13fddbcbfe3f646f0a7f7d6961e386b4365fdfc IN  0xa8d3f65b6e2922fed1430b77ac2b557e1fa8da4a0 Ether0.00309143 25.42447892
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Contract Source Code Verified (Exact Match)

Contract Name:
Registry

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2021-09-10
*/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.7;



// Part: IRegistry

//              @@@@@@@@@@@@@@@@        ,@@@@@@@@@@@@@@@@
//              @@@,,,,,,,,,,@@@        ,@@&,,,,,,,,,,@@@
//         @@@@@@@@,,,,,,,,,,@@@@@@@@&  ,@@&,,,,,,,,,,@@@@@@@@
//         @@@**********@@@@@@@@@@@@@&  ,@@@@@@@@**********@@@
//         @@@**********@@@@@@@@@@@@@&  ,@@@@@@@@**********@@@@@@@@
//         @@@**********@@@@@@@@@@@@@&       [email protected]@@**********@@@@@@@@
//    @@@@@@@@**********@@@@@@@@@@@@@&       [email protected]@@**********@@@@@@@@
//    @@@**********@@@@@@@@@@@@@&            [email protected]@@@@@@@**********@@@
//    @@@**********@@@@@@@@@@@@@&            [email protected]@@@@@@@**********@@@@@@@@
//    @@@@@@@@**********@@@@@@@@&            [email protected]@@**********@@@@@@@@@@@@@
//    @@@@@@@@//////////@@@@@@@@&            [email protected]@@//////////@@@@@@@@@@@@@
//         @@@//////////@@@@@@@@&            [email protected]@@//////////@@@@@@@@@@@@@
//         @@@//////////@@@@@@@@&       ,@@@@@@@@//////////@@@@@@@@@@@@@
//         @@@%%%%%/////(((((@@@&       ,@@@(((((/////%%%%%@@@@@@@@
//         @@@@@@@@//////////@@@@@@@@&  ,@@@//////////@@@@@@@@@@@@@
//              @@@%%%%%%%%%%@@@@@@@@&  ,@@@%%%%%%%%%%@@@@@@@@@@@@@
//              @@@@@@@@@@@@@@@@@@@@@&  ,@@@@@@@@@@@@@@@@@@@@@@@@@@
//                   @@@@@@@@@@@@@@@@&        @@@@@@@@@@@@@@@@
//                   @@@@@@@@@@@@@@@@&        @@@@@@@@@@@@@@@@

interface IRegistry {
    event Lend(
        bool is721,
        address indexed lenderAddress,
        address indexed nftAddress,
        uint256 indexed tokenID,
        uint256 lendingID,
        uint8 maxRentDuration,
        bytes4 dailyRentPrice,
        uint16 lendAmount,
        IResolver.PaymentToken paymentToken
    );

    event Rent(
        address indexed renterAddress,
        uint256 indexed lendingID,
        uint256 indexed rentingID,
        uint16 rentAmount,
        uint8 rentDuration,
        uint32 rentedAt
    );

    event StopLend(uint256 indexed lendingID, uint32 stoppedAt);

    event StopRent(uint256 indexed rentingID, uint32 stoppedAt);

    event RentClaimed(uint256 indexed rentingID, uint32 collectedAt);

    enum NFTStandard {
        E721,
        E1155
    }

    struct CallData {
        uint256 left;
        uint256 right;
        IRegistry.NFTStandard[] nftStandard;
        address[] nftAddress;
        uint256[] tokenID;
        uint256[] lendAmount;
        uint8[] maxRentDuration;
        bytes4[] dailyRentPrice;
        uint256[] lendingID;
        uint256[] rentingID;
        uint8[] rentDuration;
        uint256[] rentAmount;
        IResolver.PaymentToken[] paymentToken;
    }

    // 2, 162, 170, 202, 218, 234, 242
    struct Lending {
        NFTStandard nftStandard;
        address payable lenderAddress;
        uint8 maxRentDuration;
        bytes4 dailyRentPrice;
        uint16 lendAmount;
        uint16 availableAmount;
        IResolver.PaymentToken paymentToken;
    }

    // 180, 212
    struct Renting {
        address payable renterAddress;
        uint8 rentDuration;
        uint32 rentedAt;
        uint16 rentAmount;
    }

    // creates the lending structs and adds them to the enumerable set
    function lend(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory lendAmount,
        uint8[] memory maxRentDuration,
        bytes4[] memory dailyRentPrice,
        IResolver.PaymentToken[] memory paymentToken
    ) external;

    function stopLend(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory lendingID
    ) external;

    // // creates the renting structs and adds them to the enumerable set
    function rent(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory lendingID,
        uint8[] memory rentDuration,
        uint256[] memory rentAmount
    ) external payable;

    function stopRent(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory lendingID,
        uint256[] memory rentingID
    ) external;

    function claimRent(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory lendingID,
        uint256[] memory rentingID
    ) external;
}

// Part: IResolver

//              @@@@@@@@@@@@@@@@        ,@@@@@@@@@@@@@@@@
//              @@@,,,,,,,,,,@@@        ,@@&,,,,,,,,,,@@@
//         @@@@@@@@,,,,,,,,,,@@@@@@@@&  ,@@&,,,,,,,,,,@@@@@@@@
//         @@@**********@@@@@@@@@@@@@&  ,@@@@@@@@**********@@@
//         @@@**********@@@@@@@@@@@@@&  ,@@@@@@@@**********@@@@@@@@
//         @@@**********@@@@@@@@@@@@@&       [email protected]@@**********@@@@@@@@
//    @@@@@@@@**********@@@@@@@@@@@@@&       [email protected]@@**********@@@@@@@@
//    @@@**********@@@@@@@@@@@@@&            [email protected]@@@@@@@**********@@@
//    @@@**********@@@@@@@@@@@@@&            [email protected]@@@@@@@**********@@@@@@@@
//    @@@@@@@@**********@@@@@@@@&            [email protected]@@**********@@@@@@@@@@@@@
//    @@@@@@@@//////////@@@@@@@@&            [email protected]@@//////////@@@@@@@@@@@@@
//         @@@//////////@@@@@@@@&            [email protected]@@//////////@@@@@@@@@@@@@
//         @@@//////////@@@@@@@@&       ,@@@@@@@@//////////@@@@@@@@@@@@@
//         @@@%%%%%/////(((((@@@&       ,@@@(((((/////%%%%%@@@@@@@@
//         @@@@@@@@//////////@@@@@@@@&  ,@@@//////////@@@@@@@@@@@@@
//              @@@%%%%%%%%%%@@@@@@@@&  ,@@@%%%%%%%%%%@@@@@@@@@@@@@
//              @@@@@@@@@@@@@@@@@@@@@&  ,@@@@@@@@@@@@@@@@@@@@@@@@@@
//                   @@@@@@@@@@@@@@@@&        @@@@@@@@@@@@@@@@
//                   @@@@@@@@@@@@@@@@&        @@@@@@@@@@@@@@@@

interface IResolver {
    enum PaymentToken {
        SENTINEL,
        DAI,
        USDC,
        TUSD
    }

    function getPaymentToken(uint8 _pt) external view returns (address);

    function setPaymentToken(uint8 _pt, address _v) external;
}

// Part: OpenZeppelin/[email protected]/Address

/**
 * @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);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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);
            }
        }
    }
}

// Part: OpenZeppelin/[email protected]/Context

/**
 * @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;
    }
}

// Part: OpenZeppelin/[email protected]/IERC165

/**
 * @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);
}

// Part: OpenZeppelin/[email protected]/IERC20

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}

// Part: OpenZeppelin/[email protected]/IERC721Receiver

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// Part: OpenZeppelin/[email protected]/ERC165

/**
 * @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;
    }
}

// Part: OpenZeppelin/[email protected]/ERC721Holder

/**
 * @dev Implementation of the {IERC721Receiver} interface.
 *
 * Accepts all token transfers.
 * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}.
 */
contract ERC721Holder is IERC721Receiver {
    /**
     * @dev See {IERC721Receiver-onERC721Received}.
     *
     * Always returns `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address,
        address,
        uint256,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC721Received.selector;
    }
}

// Part: OpenZeppelin/[email protected]/IERC1155

/**
 * @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;
}

// Part: OpenZeppelin/[email protected]/IERC1155Receiver

/**
 * @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);
}

// Part: OpenZeppelin/[email protected]/IERC20Metadata

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// Part: OpenZeppelin/[email protected]/IERC721

/**
 * @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`, 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 be 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: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * 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 Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @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 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);

    /**
     * @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;
}

// Part: OpenZeppelin/[email protected]/SafeERC20

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

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

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

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

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

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

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

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

// Part: OpenZeppelin/[email protected]/ERC1155Receiver

/**
 * @dev _Available since v3.1._
 */
abstract contract ERC1155Receiver is ERC165, IERC1155Receiver {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);
    }
}

// Part: OpenZeppelin/[email protected]/ERC20

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// Part: OpenZeppelin/[email protected]/ERC1155Holder

/**
 * @dev _Available since v3.1._
 */
contract ERC1155Holder is ERC1155Receiver {
    function onERC1155Received(
        address,
        address,
        uint256,
        uint256,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC1155Received.selector;
    }

    function onERC1155BatchReceived(
        address,
        address,
        uint256[] memory,
        uint256[] memory,
        bytes memory
    ) public virtual override returns (bytes4) {
        return this.onERC1155BatchReceived.selector;
    }
}

// File: Registry.sol

//              @@@@@@@@@@@@@@@@        ,@@@@@@@@@@@@@@@@
//              @@@,,,,,,,,,,@@@        ,@@&,,,,,,,,,,@@@
//         @@@@@@@@,,,,,,,,,,@@@@@@@@&  ,@@&,,,,,,,,,,@@@@@@@@
//         @@@**********@@@@@@@@@@@@@&  ,@@@@@@@@**********@@@
//         @@@**********@@@@@@@@@@@@@&  ,@@@@@@@@**********@@@@@@@@
//         @@@**********@@@@@@@@@@@@@&       [email protected]@@**********@@@@@@@@
//    @@@@@@@@**********@@@@@@@@@@@@@&       [email protected]@@**********@@@@@@@@
//    @@@**********@@@@@@@@@@@@@&            [email protected]@@@@@@@**********@@@
//    @@@**********@@@@@@@@@@@@@&            [email protected]@@@@@@@**********@@@@@@@@
//    @@@@@@@@**********@@@@@@@@&            [email protected]@@**********@@@@@@@@@@@@@
//    @@@@@@@@//////////@@@@@@@@&            [email protected]@@//////////@@@@@@@@@@@@@
//         @@@//////////@@@@@@@@&            [email protected]@@//////////@@@@@@@@@@@@@
//         @@@//////////@@@@@@@@&       ,@@@@@@@@//////////@@@@@@@@@@@@@
//         @@@%%%%%/////(((((@@@&       ,@@@(((((/////%%%%%@@@@@@@@
//         @@@@@@@@//////////@@@@@@@@&  ,@@@//////////@@@@@@@@@@@@@
//              @@@%%%%%%%%%%@@@@@@@@&  ,@@@%%%%%%%%%%@@@@@@@@@@@@@
//              @@@@@@@@@@@@@@@@@@@@@&  ,@@@@@@@@@@@@@@@@@@@@@@@@@@
//                   @@@@@@@@@@@@@@@@&        @@@@@@@@@@@@@@@@
//                   @@@@@@@@@@@@@@@@&        @@@@@@@@@@@@@@@@

contract Registry is IRegistry, ERC721Holder, ERC1155Receiver, ERC1155Holder {
    using SafeERC20 for ERC20;

    IResolver private resolver;
    address private admin;
    address payable private beneficiary;
    uint256 private lendingID = 1;
    uint256 private rentingID = 1;
    bool public paused = false;
    uint256 public rentFee = 0;
    uint256 private constant SECONDS_IN_DAY = 86400;
    mapping(bytes32 => Lending) private lendings;
    mapping(bytes32 => Renting) private rentings;

    modifier onlyAdmin() {
        require(msg.sender == admin, "ReNFT::not admin");
        _;
    }

    modifier notPaused() {
        require(!paused, "ReNFT::paused");
        _;
    }

    constructor(
        address newResolver,
        address payable newBeneficiary,
        address newAdmin
    ) {
        ensureIsNotZeroAddr(newResolver);
        ensureIsNotZeroAddr(newBeneficiary);
        ensureIsNotZeroAddr(newAdmin);
        resolver = IResolver(newResolver);
        beneficiary = newBeneficiary;
        admin = newAdmin;
    }

    function lend(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory lendAmount,
        uint8[] memory maxRentDuration,
        bytes4[] memory dailyRentPrice,
        IResolver.PaymentToken[] memory paymentToken
    ) external override notPaused {
        bundleCall(
            handleLend,
            createLendCallData(
                nftStandard,
                nftAddress,
                tokenID,
                lendAmount,
                maxRentDuration,
                dailyRentPrice,
                paymentToken
            )
        );
    }

    function stopLend(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory _lendingID
    ) external override notPaused {
        bundleCall(
            handleStopLend,
            createActionCallData(
                nftStandard,
                nftAddress,
                tokenID,
                _lendingID,
                new uint256[](0)
            )
        );
    }

    function rent(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory _lendingID,
        uint8[] memory rentDuration,
        uint256[] memory rentAmount
    ) external payable override notPaused {
        bundleCall(
            handleRent,
            createRentCallData(
                nftStandard,
                nftAddress,
                tokenID,
                _lendingID,
                rentDuration,
                rentAmount
            )
        );
    }

    function stopRent(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory _lendingID,
        uint256[] memory _rentingID
    ) external override notPaused {
        bundleCall(
            handleStopRent,
            createActionCallData(
                nftStandard,
                nftAddress,
                tokenID,
                _lendingID,
                _rentingID
            )
        );
    }

    function claimRent(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory _lendingID,
        uint256[] memory _rentingID
    ) external override notPaused {
        bundleCall(
            handleClaimRent,
            createActionCallData(
                nftStandard,
                nftAddress,
                tokenID,
                _lendingID,
                _rentingID
            )
        );
    }

    //      .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.
    // `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'

    function handleLend(IRegistry.CallData memory cd) private {
        for (uint256 i = cd.left; i < cd.right; i++) {
            ensureIsLendable(cd, i);
            bytes32 identifier = keccak256(
                abi.encodePacked(
                    cd.nftAddress[cd.left],
                    cd.tokenID[i],
                    lendingID
                )
            );
            IRegistry.Lending storage lending = lendings[identifier];
            ensureIsNull(lending);
            ensureTokenNotSentinel(uint8(cd.paymentToken[i]));
            bool is721 = cd.nftStandard[i] == IRegistry.NFTStandard.E721;
            lendings[identifier] = IRegistry.Lending({
                nftStandard: cd.nftStandard[i],
                lenderAddress: payable(msg.sender),
                maxRentDuration: cd.maxRentDuration[i],
                dailyRentPrice: cd.dailyRentPrice[i],
                lendAmount: is721 ? 1 : uint16(cd.lendAmount[i]),
                availableAmount: is721 ? 1 : uint16(cd.lendAmount[i]),
                paymentToken: cd.paymentToken[i]
            });
            emit IRegistry.Lend(
                is721,
                msg.sender,
                cd.nftAddress[cd.left],
                cd.tokenID[i],
                lendingID,
                cd.maxRentDuration[i],
                cd.dailyRentPrice[i],
                is721 ? 1 : uint16(cd.lendAmount[i]),
                cd.paymentToken[i]
            );
            lendingID++;
        }
        safeTransfer(
            cd,
            msg.sender,
            address(this),
            sliceArr(cd.tokenID, cd.left, cd.right, 0),
            sliceArr(cd.lendAmount, cd.left, cd.right, 0)
        );
    }

    function handleStopLend(IRegistry.CallData memory cd) private {
        uint256[] memory lentAmounts = new uint256[](cd.right - cd.left);
        for (uint256 i = cd.left; i < cd.right; i++) {
            bytes32 lendingIdentifier = keccak256(
                abi.encodePacked(
                    cd.nftAddress[cd.left],
                    cd.tokenID[i],
                    cd.lendingID[i]
                )
            );
            Lending storage lending = lendings[lendingIdentifier];
            ensureIsNotNull(lending);
            ensureIsStoppable(lending, msg.sender);
            require(
                cd.nftStandard[i] == lending.nftStandard,
                "ReNFT::invalid nft standard"
            );
            require(
                lending.lendAmount == lending.availableAmount,
                "ReNFT::actively rented"
            );
            lentAmounts[i - cd.left] = lending.lendAmount;
            emit IRegistry.StopLend(cd.lendingID[i], uint32(block.timestamp));
            delete lendings[lendingIdentifier];
        }
        safeTransfer(
            cd,
            address(this),
            msg.sender,
            sliceArr(cd.tokenID, cd.left, cd.right, 0),
            sliceArr(lentAmounts, cd.left, cd.right, cd.left)
        );
    }

    function handleRent(IRegistry.CallData memory cd) private {
        for (uint256 i = cd.left; i < cd.right; i++) {
            bytes32 lendingIdentifier = keccak256(
                abi.encodePacked(
                    cd.nftAddress[cd.left],
                    cd.tokenID[i],
                    cd.lendingID[i]
                )
            );
            bytes32 rentingIdentifier = keccak256(
                abi.encodePacked(
                    cd.nftAddress[cd.left],
                    cd.tokenID[i],
                    rentingID
                )
            );
            IRegistry.Lending storage lending = lendings[lendingIdentifier];
            IRegistry.Renting storage renting = rentings[rentingIdentifier];
            ensureIsNotNull(lending);
            ensureIsNull(renting);
            ensureIsRentable(lending, cd, i, msg.sender);
            require(
                cd.nftStandard[i] == lending.nftStandard,
                "ReNFT::invalid nft standard"
            );
            require(
                cd.rentAmount[i] <= lending.availableAmount,
                "ReNFT::invalid rent amount"
            );
            uint8 paymentTokenIx = uint8(lending.paymentToken);
            address paymentToken = resolver.getPaymentToken(paymentTokenIx);
            uint256 decimals = ERC20(paymentToken).decimals();
            {
                uint256 scale = 10**decimals;
                uint256 rentPrice = cd.rentAmount[i] *
                    cd.rentDuration[i] *
                    unpackPrice(lending.dailyRentPrice, scale);
                require(rentPrice > 0, "ReNFT::rent price is zero");
                ERC20(paymentToken).safeTransferFrom(
                    msg.sender,
                    address(this),
                    rentPrice
                );
            }
            rentings[rentingIdentifier] = IRegistry.Renting({
                renterAddress: payable(msg.sender),
                rentAmount: uint16(cd.rentAmount[i]),
                rentDuration: cd.rentDuration[i],
                rentedAt: uint32(block.timestamp)
            });
            lendings[lendingIdentifier].availableAmount -= uint16(
                cd.rentAmount[i]
            );
            emit IRegistry.Rent(
                msg.sender,
                cd.lendingID[i],
                rentingID,
                uint16(cd.rentAmount[i]),
                cd.rentDuration[i],
                renting.rentedAt
            );
            rentingID++;
        }
    }

    function handleStopRent(IRegistry.CallData memory cd) private {
        for (uint256 i = cd.left; i < cd.right; i++) {
            bytes32 lendingIdentifier = keccak256(
                abi.encodePacked(
                    cd.nftAddress[cd.left],
                    cd.tokenID[i],
                    cd.lendingID[i]
                )
            );
            bytes32 rentingIdentifier = keccak256(
                abi.encodePacked(
                    cd.nftAddress[cd.left],
                    cd.tokenID[i],
                    cd.rentingID[i]
                )
            );
            IRegistry.Lending storage lending = lendings[lendingIdentifier];
            IRegistry.Renting storage renting = rentings[rentingIdentifier];
            ensureIsNotNull(lending);
            ensureIsNotNull(renting);
            ensureIsReturnable(renting, msg.sender, block.timestamp);
            require(
                cd.nftStandard[i] == lending.nftStandard,
                "ReNFT::invalid nft standard"
            );
            require(
                renting.rentAmount <= lending.lendAmount,
                "ReNFT::critical error"
            );
            uint256 secondsSinceRentStart = block.timestamp - renting.rentedAt;
            distributePayments(lending, renting, secondsSinceRentStart);
            lendings[lendingIdentifier].availableAmount += renting.rentAmount;
            emit IRegistry.StopRent(cd.rentingID[i], uint32(block.timestamp));
            delete rentings[rentingIdentifier];
        }
    }

    function handleClaimRent(CallData memory cd) private {
        for (uint256 i = cd.left; i < cd.right; i++) {
            bytes32 lendingIdentifier = keccak256(
                abi.encodePacked(
                    cd.nftAddress[cd.left],
                    cd.tokenID[i],
                    cd.lendingID[i]
                )
            );
            bytes32 rentingIdentifier = keccak256(
                abi.encodePacked(
                    cd.nftAddress[cd.left],
                    cd.tokenID[i],
                    cd.rentingID[i]
                )
            );
            IRegistry.Lending storage lending = lendings[lendingIdentifier];
            IRegistry.Renting storage renting = rentings[rentingIdentifier];
            ensureIsNotNull(lending);
            ensureIsNotNull(renting);
            ensureIsClaimable(renting, block.timestamp);
            distributeClaimPayment(lending, renting);
            lending.availableAmount += renting.rentAmount;
            emit IRegistry.RentClaimed(
                cd.rentingID[i],
                uint32(block.timestamp)
            );
            delete rentings[rentingIdentifier];
        }
    }

    //      .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.
    // `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'

    function bundleCall(
        function(IRegistry.CallData memory) handler,
        IRegistry.CallData memory cd
    ) private {
        require(cd.nftAddress.length > 0, "ReNFT::no nfts");
        while (cd.right != cd.nftAddress.length) {
            if (
                (cd.nftAddress[cd.left] == cd.nftAddress[cd.right]) &&
                (cd.nftStandard[cd.right] == IRegistry.NFTStandard.E1155)
            ) {
                cd.right++;
            } else {
                handler(cd);
                cd.left = cd.right;
                cd.right++;
            }
        }
        handler(cd);
    }

    function takeFee(uint256 rentAmt, IResolver.PaymentToken paymentToken)
        private
        returns (uint256 fee)
    {
        fee = rentAmt * rentFee;
        fee /= 10000;
        uint8 paymentTokenIx = uint8(paymentToken);
        ERC20 pmtToken = ERC20(resolver.getPaymentToken(paymentTokenIx));
        pmtToken.safeTransfer(beneficiary, fee);
    }

    function distributePayments(
        IRegistry.Lending memory lending,
        IRegistry.Renting memory renting,
        uint256 secondsSinceRentStart
    ) private {
        uint8 paymentTokenIx = uint8(lending.paymentToken);
        address pmtToken = resolver.getPaymentToken(paymentTokenIx);
        uint256 decimals = ERC20(pmtToken).decimals();
        uint256 scale = 10**decimals;
        uint256 rentPrice = renting.rentAmount *
            unpackPrice(lending.dailyRentPrice, scale);
        uint256 totalRenterPmt = rentPrice * renting.rentDuration;
        uint256 sendLenderAmt = (secondsSinceRentStart * rentPrice) /
            SECONDS_IN_DAY;
        require(totalRenterPmt > 0, "ReNFT::total renter payment is zero");
        require(sendLenderAmt > 0, "ReNFT::lender payment is zero");
        uint256 sendRenterAmt = totalRenterPmt - sendLenderAmt;
        if (rentFee != 0) {
            uint256 takenFee = takeFee(sendLenderAmt, lending.paymentToken);
            sendLenderAmt -= takenFee;
        }
        ERC20(pmtToken).safeTransfer(lending.lenderAddress, sendLenderAmt);
        if (sendRenterAmt > 0) {
            ERC20(pmtToken).safeTransfer(renting.renterAddress, sendRenterAmt);
        }
    }

    function distributeClaimPayment(
        IRegistry.Lending memory lending,
        IRegistry.Renting memory renting
    ) private {
        uint8 paymentTokenIx = uint8(lending.paymentToken);
        ERC20 paymentToken = ERC20(resolver.getPaymentToken(paymentTokenIx));
        uint256 decimals = ERC20(paymentToken).decimals();
        uint256 scale = 10**decimals;
        uint256 rentPrice = renting.rentAmount *
            unpackPrice(lending.dailyRentPrice, scale);
        uint256 finalAmt = rentPrice * renting.rentDuration;
        uint256 takenFee = 0;
        if (rentFee != 0) {
            takenFee = takeFee(
                finalAmt,
                IResolver.PaymentToken(paymentTokenIx)
            );
        }
        paymentToken.safeTransfer(lending.lenderAddress, finalAmt - takenFee);
    }

    function safeTransfer(
        CallData memory cd,
        address from,
        address to,
        uint256[] memory tokenID,
        uint256[] memory lendAmount
    ) private {
        if (cd.nftStandard[cd.left] == IRegistry.NFTStandard.E721) {
            IERC721(cd.nftAddress[cd.left]).transferFrom(
                from,
                to,
                cd.tokenID[cd.left]
            );
        } else {
            IERC1155(cd.nftAddress[cd.left]).safeBatchTransferFrom(
                from,
                to,
                tokenID,
                lendAmount,
                ""
            );
        }
    }

    //      .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.
    // `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'

    function getLending(
        address nftAddress,
        uint256 tokenID,
        uint256 _lendingID
    )
        external
        view
        returns (
            uint8,
            address,
            uint8,
            bytes4,
            uint16,
            uint16,
            uint8
        )
    {
        bytes32 identifier = keccak256(
            abi.encodePacked(nftAddress, tokenID, _lendingID)
        );
        IRegistry.Lending storage lending = lendings[identifier];
        return (
            uint8(lending.nftStandard),
            lending.lenderAddress,
            lending.maxRentDuration,
            lending.dailyRentPrice,
            lending.lendAmount,
            lending.availableAmount,
            uint8(lending.paymentToken)
        );
    }

    function getRenting(
        address nftAddress,
        uint256 tokenID,
        uint256 _rentingID
    )
        external
        view
        returns (
            address,
            uint16,
            uint8,
            uint32
        )
    {
        bytes32 identifier = keccak256(
            abi.encodePacked(nftAddress, tokenID, _rentingID)
        );
        IRegistry.Renting storage renting = rentings[identifier];
        return (
            renting.renterAddress,
            renting.rentAmount,
            renting.rentDuration,
            renting.rentedAt
        );
    }

    //      .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.
    // `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'

    function createLendCallData(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory lendAmount,
        uint8[] memory maxRentDuration,
        bytes4[] memory dailyRentPrice,
        IResolver.PaymentToken[] memory paymentToken
    ) private pure returns (CallData memory cd) {
        cd = CallData({
            left: 0,
            right: 1,
            nftStandard: nftStandard,
            nftAddress: nftAddress,
            tokenID: tokenID,
            lendAmount: lendAmount,
            lendingID: new uint256[](0),
            rentingID: new uint256[](0),
            rentDuration: new uint8[](0),
            rentAmount: new uint256[](0),
            maxRentDuration: maxRentDuration,
            dailyRentPrice: dailyRentPrice,
            paymentToken: paymentToken
        });
    }

    function createRentCallData(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory _lendingID,
        uint8[] memory rentDuration,
        uint256[] memory rentAmount
    ) private pure returns (CallData memory cd) {
        cd = CallData({
            left: 0,
            right: 1,
            nftStandard: nftStandard,
            nftAddress: nftAddress,
            tokenID: tokenID,
            lendAmount: new uint256[](0),
            lendingID: _lendingID,
            rentingID: new uint256[](0),
            rentDuration: rentDuration,
            rentAmount: rentAmount,
            maxRentDuration: new uint8[](0),
            dailyRentPrice: new bytes4[](0),
            paymentToken: new IResolver.PaymentToken[](0)
        });
    }

    function createActionCallData(
        IRegistry.NFTStandard[] memory nftStandard,
        address[] memory nftAddress,
        uint256[] memory tokenID,
        uint256[] memory _lendingID,
        uint256[] memory _rentingID
    ) private pure returns (CallData memory cd) {
        cd = CallData({
            left: 0,
            right: 1,
            nftStandard: nftStandard,
            nftAddress: nftAddress,
            tokenID: tokenID,
            lendAmount: new uint256[](0),
            lendingID: _lendingID,
            rentingID: _rentingID,
            rentDuration: new uint8[](0),
            rentAmount: new uint256[](0),
            maxRentDuration: new uint8[](0),
            dailyRentPrice: new bytes4[](0),
            paymentToken: new IResolver.PaymentToken[](0)
        });
    }

    function unpackPrice(bytes4 price, uint256 scale)
        private
        pure
        returns (uint256)
    {
        ensureIsUnpackablePrice(price, scale);
        uint16 whole = uint16(bytes2(price));
        uint16 decimal = uint16(bytes2(price << 16));
        uint256 decimalScale = scale / 10000;
        if (whole > 9999) {
            whole = 9999;
        }
        if (decimal > 9999) {
            decimal = 9999;
        }
        uint256 w = whole * scale;
        uint256 d = decimal * decimalScale;
        uint256 fullPrice = w + d;
        return fullPrice;
    }

    function sliceArr(
        uint256[] memory arr,
        uint256 fromIx,
        uint256 toIx,
        uint256 arrOffset
    ) private pure returns (uint256[] memory r) {
        r = new uint256[](toIx - fromIx);
        for (uint256 i = fromIx; i < toIx; i++) {
            r[i - fromIx] = arr[i - arrOffset];
        }
    }

    //      .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.
    // `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'

    function ensureIsNotZeroAddr(address addr) private pure {
        require(addr != address(0), "ReNFT::zero address");
    }

    function ensureIsZeroAddr(address addr) private pure {
        require(addr == address(0), "ReNFT::not a zero address");
    }

    function ensureIsNull(Lending memory lending) private pure {
        ensureIsZeroAddr(lending.lenderAddress);
        require(lending.maxRentDuration == 0, "ReNFT::duration not zero");
        require(lending.dailyRentPrice == 0, "ReNFT::rent price not zero");
    }

    function ensureIsNotNull(Lending memory lending) private pure {
        ensureIsNotZeroAddr(lending.lenderAddress);
        require(lending.maxRentDuration != 0, "ReNFT::duration zero");
        require(lending.dailyRentPrice != 0, "ReNFT::rent price is zero");
    }

    function ensureIsNull(Renting memory renting) private pure {
        ensureIsZeroAddr(renting.renterAddress);
        require(renting.rentDuration == 0, "ReNFT::duration not zero");
        require(renting.rentedAt == 0, "ReNFT::rented at not zero");
    }

    function ensureIsNotNull(Renting memory renting) private pure {
        ensureIsNotZeroAddr(renting.renterAddress);
        require(renting.rentDuration != 0, "ReNFT::duration is zero");
        require(renting.rentedAt != 0, "ReNFT::rented at is zero");
    }

    function ensureIsLendable(CallData memory cd, uint256 i) private pure {
        require(cd.lendAmount[i] > 0, "ReNFT::lend amount is zero");
        require(cd.lendAmount[i] <= type(uint16).max, "ReNFT::not uint16");
        require(cd.maxRentDuration[i] > 0, "ReNFT::duration is zero");
        require(cd.maxRentDuration[i] <= type(uint8).max, "ReNFT::not uint8");
        require(uint32(cd.dailyRentPrice[i]) > 0, "ReNFT::rent price is zero");
    }

    function ensureIsRentable(
        Lending memory lending,
        CallData memory cd,
        uint256 i,
        address msgSender
    ) private pure {
        require(msgSender != lending.lenderAddress, "ReNFT::cant rent own nft");
        require(cd.rentDuration[i] <= type(uint8).max, "ReNFT::not uint8");
        require(cd.rentDuration[i] > 0, "ReNFT::duration is zero");
        require(cd.rentAmount[i] <= type(uint16).max, "ReNFT::not uint16");
        require(cd.rentAmount[i] > 0, "ReNFT::rentAmount is zero");
        require(
            cd.rentDuration[i] <= lending.maxRentDuration,
            "ReNFT::rent duration exceeds allowed max"
        );
    }

    function ensureIsReturnable(
        Renting memory renting,
        address msgSender,
        uint256 blockTimestamp
    ) private pure {
        require(renting.renterAddress == msgSender, "ReNFT::not renter");
        require(
            !isPastReturnDate(renting, blockTimestamp),
            "ReNFT::past return date"
        );
    }

    function ensureIsStoppable(Lending memory lending, address msgSender)
        private
        pure
    {
        require(lending.lenderAddress == msgSender, "ReNFT::not lender");
    }

    function ensureIsUnpackablePrice(bytes4 price, uint256 scale) private pure {
        require(uint32(price) > 0, "ReNFT::invalid price");
        require(scale >= 10000, "ReNFT::invalid scale");
    }

    function ensureTokenNotSentinel(uint8 paymentIx) private pure {
        require(paymentIx > 0, "ReNFT::token is sentinel");
    }

    function ensureIsClaimable(
        IRegistry.Renting memory renting,
        uint256 blockTimestamp
    ) private pure {
        require(
            isPastReturnDate(renting, blockTimestamp),
            "ReNFT::return date not passed"
        );
    }

    function isPastReturnDate(Renting memory renting, uint256 nowTime)
        private
        pure
        returns (bool)
    {
        require(nowTime > renting.rentedAt, "ReNFT::now before rented");
        return
            nowTime - renting.rentedAt > renting.rentDuration * SECONDS_IN_DAY;
    }

    //      .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.     .-.
    // `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'   `._.'

    function setRentFee(uint256 newRentFee) external onlyAdmin {
        require(newRentFee < 10000, "ReNFT::fee exceeds 100pct");
        rentFee = newRentFee;
    }

    function setBeneficiary(address payable newBeneficiary) external onlyAdmin {
        beneficiary = newBeneficiary;
    }

    function setPaused(bool newPaused) external onlyAdmin {
        paused = newPaused;
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"newResolver","type":"address"},{"internalType":"address payable","name":"newBeneficiary","type":"address"},{"internalType":"address","name":"newAdmin","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"is721","type":"bool"},{"indexed":true,"internalType":"address","name":"lenderAddress","type":"address"},{"indexed":true,"internalType":"address","name":"nftAddress","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenID","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"lendingID","type":"uint256"},{"indexed":false,"internalType":"uint8","name":"maxRentDuration","type":"uint8"},{"indexed":false,"internalType":"bytes4","name":"dailyRentPrice","type":"bytes4"},{"indexed":false,"internalType":"uint16","name":"lendAmount","type":"uint16"},{"indexed":false,"internalType":"enum IResolver.PaymentToken","name":"paymentToken","type":"uint8"}],"name":"Lend","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"renterAddress","type":"address"},{"indexed":true,"internalType":"uint256","name":"lendingID","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"rentingID","type":"uint256"},{"indexed":false,"internalType":"uint16","name":"rentAmount","type":"uint16"},{"indexed":false,"internalType":"uint8","name":"rentDuration","type":"uint8"},{"indexed":false,"internalType":"uint32","name":"rentedAt","type":"uint32"}],"name":"Rent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"rentingID","type":"uint256"},{"indexed":false,"internalType":"uint32","name":"collectedAt","type":"uint32"}],"name":"RentClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"lendingID","type":"uint256"},{"indexed":false,"internalType":"uint32","name":"stoppedAt","type":"uint32"}],"name":"StopLend","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"rentingID","type":"uint256"},{"indexed":false,"internalType":"uint32","name":"stoppedAt","type":"uint32"}],"name":"StopRent","type":"event"},{"inputs":[{"internalType":"enum IRegistry.NFTStandard[]","name":"nftStandard","type":"uint8[]"},{"internalType":"address[]","name":"nftAddress","type":"address[]"},{"internalType":"uint256[]","name":"tokenID","type":"uint256[]"},{"internalType":"uint256[]","name":"_lendingID","type":"uint256[]"},{"internalType":"uint256[]","name":"_rentingID","type":"uint256[]"}],"name":"claimRent","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"},{"internalType":"uint256","name":"tokenID","type":"uint256"},{"internalType":"uint256","name":"_lendingID","type":"uint256"}],"name":"getLending","outputs":[{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"bytes4","name":"","type":"bytes4"},{"internalType":"uint16","name":"","type":"uint16"},{"internalType":"uint16","name":"","type":"uint16"},{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"},{"internalType":"uint256","name":"tokenID","type":"uint256"},{"internalType":"uint256","name":"_rentingID","type":"uint256"}],"name":"getRenting","outputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint16","name":"","type":"uint16"},{"internalType":"uint8","name":"","type":"uint8"},{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum IRegistry.NFTStandard[]","name":"nftStandard","type":"uint8[]"},{"internalType":"address[]","name":"nftAddress","type":"address[]"},{"internalType":"uint256[]","name":"tokenID","type":"uint256[]"},{"internalType":"uint256[]","name":"lendAmount","type":"uint256[]"},{"internalType":"uint8[]","name":"maxRentDuration","type":"uint8[]"},{"internalType":"bytes4[]","name":"dailyRentPrice","type":"bytes4[]"},{"internalType":"enum IResolver.PaymentToken[]","name":"paymentToken","type":"uint8[]"}],"name":"lend","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155BatchReceived","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum IRegistry.NFTStandard[]","name":"nftStandard","type":"uint8[]"},{"internalType":"address[]","name":"nftAddress","type":"address[]"},{"internalType":"uint256[]","name":"tokenID","type":"uint256[]"},{"internalType":"uint256[]","name":"_lendingID","type":"uint256[]"},{"internalType":"uint8[]","name":"rentDuration","type":"uint8[]"},{"internalType":"uint256[]","name":"rentAmount","type":"uint256[]"}],"name":"rent","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"rentFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"newBeneficiary","type":"address"}],"name":"setBeneficiary","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"newPaused","type":"bool"}],"name":"setPaused","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newRentFee","type":"uint256"}],"name":"setRentFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum IRegistry.NFTStandard[]","name":"nftStandard","type":"uint8[]"},{"internalType":"address[]","name":"nftAddress","type":"address[]"},{"internalType":"uint256[]","name":"tokenID","type":"uint256[]"},{"internalType":"uint256[]","name":"_lendingID","type":"uint256[]"}],"name":"stopLend","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum IRegistry.NFTStandard[]","name":"nftStandard","type":"uint8[]"},{"internalType":"address[]","name":"nftAddress","type":"address[]"},{"internalType":"uint256[]","name":"tokenID","type":"uint256[]"},{"internalType":"uint256[]","name":"_lendingID","type":"uint256[]"},{"internalType":"uint256[]","name":"_rentingID","type":"uint256[]"}],"name":"stopRent","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000945e589a4715d1915e6fe14f08e4887bc401934100000000000000000000000028f11c3d76169361d22d8ae53551827ac03360b000000000000000000000000000000444e5a1a667663b0adfd853e8efa0470698

-----Decoded View---------------
Arg [0] : newResolver (address): 0x945E589A4715d1915e6FE14f08e4887Bc4019341
Arg [1] : newBeneficiary (address): 0x28f11c3D76169361D22D8aE53551827Ac03360B0
Arg [2] : newAdmin (address): 0x00000444e5a1a667663b0ADfD853E8Efa0470698

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000945e589a4715d1915e6fe14f08e4887bc4019341
Arg [1] : 00000000000000000000000028f11c3d76169361d22d8ae53551827ac03360b0
Arg [2] : 00000000000000000000000000000444e5a1a667663b0adfd853e8efa0470698


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.