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// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

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//
// Powered By:    @niftygateway
// Author:        @niftynathang
// Collaborators: @conviction_1 
//                @stormihoebe
//                @smatthewenglish
//                @dccockfoster
//                @blainemalone

import "../interfaces/IERC721Cloneable.sol";
import "../interfaces/IERC721DefaultOwnerCloneable.sol";
import "../interfaces/IERC721MetadataGenerator.sol";
import "../interfaces/INiftyEntityCloneable.sol";
import "../libraries/Clones.sol";
import "../utils/NiftyPermissions.sol";

contract NiftyCloneFactory is NiftyPermissions {

    event ClonedERC721(address newToken);    
    event ClonedERC721MetadataGenerator(address metadataGenerator);    
    
    constructor(address niftyRegistryContract_) {
        initializeNiftyEntity(niftyRegistryContract_);
    }
        
    function cloneERC721(address implementation, address niftyRegistryContract_, address defaultOwner_, string calldata name_, string calldata symbol_, string calldata baseURI_) external returns (address) {
        _requireOnlyValidSender();
        require(IERC165(implementation).supportsInterface(type(IERC721Cloneable).interfaceId), "Not a valid ERC721 Token");        
        address clone = Clones.clone(implementation);

        emit ClonedERC721(clone);

        IERC721Cloneable(clone).initializeERC721(name_, symbol_, baseURI_);        

        if(IERC165(implementation).supportsInterface(type(INiftyEntityCloneable).interfaceId)) {
            INiftyEntityCloneable(clone).initializeNiftyEntity(niftyRegistryContract_);
        }

        if(IERC165(implementation).supportsInterface(type(IERC721DefaultOwnerCloneable).interfaceId)) {
            IERC721DefaultOwnerCloneable(clone).initializeDefaultOwner(defaultOwner_);
        }        

        return clone;
    }
    
    function cloneMetadataGenerator(address implementation, address niftyRegistryContract_) external returns (address) {
        _requireOnlyValidSender();
        require(IERC165(implementation).supportsInterface(type(IERC721MetadataGenerator).interfaceId), "Not a valid Metadata Generator");
        address clone = Clones.clone(implementation);        

        emit ClonedERC721MetadataGenerator(clone);
        
        if(IERC165(implementation).supportsInterface(type(INiftyEntityCloneable).interfaceId)) {
            INiftyEntityCloneable(clone).initializeNiftyEntity(niftyRegistryContract_);
        }        

        return clone;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

import "./IERC721.sol";

interface IERC721Cloneable is IERC721 {
    function initializeERC721(string calldata name_, string calldata symbol_, string calldata baseURI_) external;    
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

import "./IERC165.sol";

interface IERC721DefaultOwnerCloneable is IERC165 {
    function initializeDefaultOwner(address defaultOwner_) external;    
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

import "./IERC165.sol";

interface IERC721MetadataGenerator is IERC165 {    
    function tokenMetadata(uint256 tokenId, uint256 niftyType, bytes calldata data) external view returns (string memory);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

import "./IERC165.sol";

interface INiftyEntityCloneable is IERC165 {
    function initializeNiftyEntity(address niftyRegistryContract_) external;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create(0, ptr, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create2(0, ptr, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
            mstore(add(ptr, 0x38), shl(0x60, deployer))
            mstore(add(ptr, 0x4c), salt)
            mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
            predicted := keccak256(add(ptr, 0x37), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address implementation, bytes32 salt)
        internal
        view
        returns (address predicted)
    {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

import "./ERC165.sol";
import "./GenericErrors.sol";
import "../interfaces/INiftyEntityCloneable.sol";
import "../interfaces/INiftyRegistry.sol";
import "../libraries/Context.sol";

abstract contract NiftyPermissions is Context, ERC165, GenericErrors, INiftyEntityCloneable {    

    event AdminTransferred(address indexed previousAdmin, address indexed newAdmin);

    // Only allow Nifty Entity to be initialized once
    bool internal initializedNiftyEntity;

    // If address(0), use enable Nifty Gateway permissions - otherwise, specifies the address with permissions
    address public admin;

    // To prevent a mistake, transferring admin rights will be a two step process
    // First, the current admin nominates a new admin
    // Second, the nominee accepts admin
    address public nominatedAdmin;

    // Nifty Registry Contract
    INiftyRegistry internal permissionsRegistry;    

    function initializeNiftyEntity(address niftyRegistryContract_) public {
        require(!initializedNiftyEntity, ERROR_REINITIALIZATION_NOT_PERMITTED);
        permissionsRegistry = INiftyRegistry(niftyRegistryContract_);
        initializedNiftyEntity = true;
    }       
    
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return         
        interfaceId == type(INiftyEntityCloneable).interfaceId ||
        super.supportsInterface(interfaceId);
    }        

    function renounceAdmin() external {
        _requireOnlyValidSender();
        _transferAdmin(address(0));
    }    

    function nominateAdmin(address nominee) external {
        _requireOnlyValidSender();
        nominatedAdmin = nominee;
    }

    function acceptAdmin() external {
        address nominee = nominatedAdmin;
        require(_msgSender() == nominee, ERROR_INVALID_MSG_SENDER);
        _transferAdmin(nominee);
    }
    
    function _requireOnlyValidSender() internal view {       
        address currentAdmin = admin;     
        if(currentAdmin == address(0)) {
            require(permissionsRegistry.isValidNiftySender(_msgSender()), ERROR_INVALID_MSG_SENDER);
        } else {
            require(_msgSender() == currentAdmin, ERROR_INVALID_MSG_SENDER);
        }
    }        

    function _transferAdmin(address newAdmin) internal {
        address oldAdmin = admin;
        admin = newAdmin;
        delete nominatedAdmin;        
        emit AdminTransferred(oldAdmin, newAdmin);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

import "./IERC165.sol";

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, 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;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

/**
 * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

import "../interfaces/IERC165.sol";

/**
 * @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;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

abstract contract GenericErrors {
    string internal constant ERROR_INPUT_ARRAY_EMPTY = "Input array empty";
    string internal constant ERROR_INPUT_ARRAY_SIZE_MISMATCH = "Input array size mismatch";
    string internal constant ERROR_INVALID_MSG_SENDER = "Invalid msg.sender";
    string internal constant ERROR_UNEXPECTED_DATA_SIGNER = "Unexpected data signer";
    string internal constant ERROR_INSUFFICIENT_BALANCE = "Insufficient balance";
    string internal constant ERROR_WITHDRAW_UNSUCCESSFUL = "Withdraw unsuccessful";
    string internal constant ERROR_CONTRACT_IS_FINALIZED = "Contract is finalized";
    string internal constant ERROR_CANNOT_CHANGE_DEFAULT_OWNER = "Cannot change default owner";
    string internal constant ERROR_UNCLONEABLE_REFERENCE_CONTRACT = "Uncloneable reference contract";
    string internal constant ERROR_BIPS_OVER_100_PERCENT = "Bips over 100%";
    string internal constant ERROR_NO_ROYALTY_RECEIVER = "No royalty receiver";
    string internal constant ERROR_REINITIALIZATION_NOT_PERMITTED = "Re-initialization not permitted";
    string internal constant ERROR_ZERO_ETH_TRANSFER = "Zero ETH Transfer";
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

interface INiftyRegistry {
   function isValidNiftySender(address sendingKey) external view returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.9;

/**
 * @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;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1500
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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[{"inputs":[{"internalType":"address","name":"niftyRegistryContract_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":true,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newToken","type":"address"}],"name":"ClonedERC721","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"metadataGenerator","type":"address"}],"name":"ClonedERC721MetadataGenerator","type":"event"},{"inputs":[],"name":"acceptAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"implementation","type":"address"},{"internalType":"address","name":"niftyRegistryContract_","type":"address"},{"internalType":"address","name":"defaultOwner_","type":"address"},{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"},{"internalType":"string","name":"baseURI_","type":"string"}],"name":"cloneERC721","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"implementation","type":"address"},{"internalType":"address","name":"niftyRegistryContract_","type":"address"}],"name":"cloneMetadataGenerator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"niftyRegistryContract_","type":"address"}],"name":"initializeNiftyEntity","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nominee","type":"address"}],"name":"nominateAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"nominatedAdmin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceAdmin","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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0000000000000000000000006e53130ddff21e3bc963ee902005223b9a202106

-----Decoded View---------------
Arg [0] : niftyRegistryContract_ (address): 0x6e53130dDfF21E3BC963Ee902005223b9A202106

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000006e53130ddff21e3bc963ee902005223b9a202106