// File: ENSNFT.sol



// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.15;

import {Ownable} from "@openzeppelin/contracts@4.6.0/access/Ownable.sol";
import {IERC165} from "@openzeppelin/contracts@4.6.0/utils/introspection/IERC165.sol";
import {IERC721} from "@openzeppelin/contracts@4.6.0/token/ERC721/IERC721.sol";
import {ENS} from "@ensdomains/ens-contracts/contracts/registry/ENS.sol";
import {IAddrResolver} from "@ensdomains/ens-contracts/contracts/resolvers/profiles/IAddrResolver.sol";
import {IAddressResolver} from "@ensdomains/ens-contracts/contracts/resolvers/profiles/IAddressResolver.sol";

contract ENSNFT is Ownable, IAddrResolver, IAddressResolver {

	function supportsInterface(bytes4 interfaceId) public pure returns (bool) {
		return interfaceId == type(IERC165).interfaceId 
			|| interfaceId == type(IAddrResolver).interfaceId
			|| interfaceId == type(IAddressResolver).interfaceId;
	}

    error AlreadyEnabled();

    ENS _ens = ENS(0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e);
    IERC721 public _nft; 
    string public _name;
    bytes32 public _node;
    mapping (bytes32 => uint256) _nodes;

    constructor(string memory name, address nft) {
        _name = name;
        _node = _namehash(name);
        _nft = IERC721(nft);
    }

    function destroy() public onlyOwner {
        selfdestruct(payable(msg.sender));
    }

    function isEnabled(uint256 token) public view returns (bool) {
        return _nodes[_namehash(getName(token))] != 0;
    }
    function _enable(uint256 token) private returns (bool) {
        string memory name = getName(token);
        bytes32 node = _namehash(name);
        if (_nodes[node] != 0) return false;
        uint256 len = _lengthBase10(token);
        assembly {
            mstore(name, len) // truncate
        }
        _ens.setSubnodeRecord(_node, _labelhash(name, 0, len), address(this), address(this), 0);
        _nodes[node] = token;
        return true;
    }

    function enable(uint256 token) public {
        if (!_enable(token)) revert AlreadyEnabled();
    }
    function batchEnable(uint256 token, uint256 tokenLast) public {
        uint256 any;
        while (token <= tokenLast) {
            if (_enable(token++)) {
                any = 1;
            }
        }
        if (any == 0) revert AlreadyEnabled();
    }

    // token -> name
    function _lengthBase10(uint256 token) private pure returns (uint256 len) {
        len = 1;
        while (token >= 10) {
            token /= 10;
            len++;
        } 
    }
    function getName(uint256 token) public view returns (string memory) {
        bytes memory name = bytes(_name);
        uint256 len = 1 + _lengthBase10(token);        
        bytes memory buf = new bytes(len + name.length);
        assembly {
            for {
                let src := name
                let end := add(src, mload(src))
                let dst := add(buf, len)
            } lt(src, end) {} {
                src := add(src, 32)
                dst := add(dst, 32)
                mstore(dst, mload(src))
            }
            mstore(buf, add(len, mload(name)))
        }
        buf[--len] = '.';        
        while (len > 0) {
            buf[--len] = bytes1(uint8(48 + (token % 10)));
            token /= 10;
        }
        return string(buf);
    }

    // ens
    function addr(bytes32 node) public view returns (address payable ret) {
        uint256 token = _nodes[node];
        if (token != 0) {                
            return payable(_nft.ownerOf(token));
        }
    }
    function addr(bytes32 node, uint256 coinType) public view returns(bytes memory ret) {
        if (coinType == 60) {
            return abi.encodePacked(addr(node));
        }
    }

    // ens helpers
    function _namehash(string memory domain) private pure returns (bytes32 node) {
		uint256 i = bytes(domain).length;
		uint256 n = i;
		node = bytes32(0);
		for (; i > 0; i--) {
			if (bytes(domain)[i-1] == '.') {
				node = keccak256(abi.encodePacked(node, _labelhash(domain, i, n)));
				n = i - 1;
			}
		}
		node = keccak256(abi.encodePacked(node, _labelhash(domain, i, n)));
	}
	function _labelhash(string memory domain, uint start, uint end) private pure returns (bytes32 hash) {
		assembly ("memory-safe") {
			hash := keccak256(add(add(domain, 0x20), start), sub(end, start))
		}
	}

}
// File: @ensdomains/ens-contracts/contracts/resolvers/profiles/IAddressResolver.sol



// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

/**
 * Interface for the new (multicoin) addr function.
 */
interface IAddressResolver {
    event AddressChanged(bytes32 indexed node, uint coinType, bytes newAddress);

    function addr(bytes32 node, uint coinType) external view returns(bytes memory);
}

// File: @ensdomains/ens-contracts/contracts/resolvers/profiles/IAddrResolver.sol



// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

/**
 * Interface for the legacy (ETH-only) addr function.
 */
interface IAddrResolver {
    event AddrChanged(bytes32 indexed node, address a);

    /**
     * Returns the address associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated address.
     */
    function addr(bytes32 node) external view returns (address payable);
}

// File: @ensdomains/ens-contracts/contracts/registry/ENS.sol



pragma solidity >=0.8.4;

interface ENS {
    // Logged when the owner of a node assigns a new owner to a subnode.
    event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);

    // Logged when the owner of a node transfers ownership to a new account.
    event Transfer(bytes32 indexed node, address owner);

    // Logged when the resolver for a node changes.
    event NewResolver(bytes32 indexed node, address resolver);

    // Logged when the TTL of a node changes
    event NewTTL(bytes32 indexed node, uint64 ttl);

    // Logged when an operator is added or removed.
    event ApprovalForAll(
        address indexed owner,
        address indexed operator,
        bool approved
    );

    function setRecord(
        bytes32 node,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeRecord(
        bytes32 node,
        bytes32 label,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeOwner(
        bytes32 node,
        bytes32 label,
        address owner
    ) external returns (bytes32);

    function setResolver(bytes32 node, address resolver) external;

    function setOwner(bytes32 node, address owner) external;

    function setTTL(bytes32 node, uint64 ttl) external;

    function setApprovalForAll(address operator, bool approved) external;

    function owner(bytes32 node) external view returns (address);

    function resolver(bytes32 node) external view returns (address);

    function ttl(bytes32 node) external view returns (uint64);

    function recordExists(bytes32 node) external view returns (bool);

    function isApprovedForAll(address owner, address operator)
        external
        view
        returns (bool);
}

// File: @openzeppelin/contracts@4.6.0/token/ERC721/IERC721.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must 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 Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

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

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

// File: @openzeppelin/contracts@4.6.0/utils/introspection/IERC165.sol



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

pragma solidity ^0.8.0;

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

// File: @openzeppelin/contracts@4.6.0/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

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

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

// File: @openzeppelin/contracts@4.6.0/utils/Context.sol



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

pragma solidity ^0.8.0;

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

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