// File: openzeppelin-solidity/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT

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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: openzeppelin-solidity/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT

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) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// File: /contracts/JerkfaceBurner.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

//------------------------------------------------------------------------------
// geneticchain.io - NextGen Generative NFT Platform
//------------------------------------------------------------------------------
//    _______                   __   __        ______ __          __
//   |     __|-----.-----.-----|  |_|__|----. |      |  |--.---.-|__|-----.
//   |    |  |  -__|     |  -__|   _|  |  __| |   ---|     |  _  |  |     |
//   |_______|_____|__|__|_____|____|__|____| |______|__|__|___._|__|__|__|
//
//------------------------------------------------------------------------------
// Genetic Chain: Jerkface Burner
//------------------------------------------------------------------------------
// Author: papaver (@tronicdreams)
//------------------------------------------------------------------------------

import "openzeppelin-solidity/contracts/access/Ownable.sol";

//------------------------------------------------------------------------------
// interfaces
//------------------------------------------------------------------------------

/**
 * Burn baby burn.
 */
interface IGenesis {
  function burn(uint256 tokenId) external;
  function ownerOf(uint256 tokenId) external view returns (address owner);
}

//------------------------------------------------------------------------------
// Jerkface Burner
//------------------------------------------------------------------------------

/**
 * @title Jerkface Burner
 */
contract JerkfaceBurner is Ownable
{

    //-------------------------------------------------------------------------
    // fields
    //-------------------------------------------------------------------------

    // jerkface genesis contract
    address private immutable _genesis;

    // time burn is open till
    uint256 public burnCutoff;

    //-------------------------------------------------------------------------
    // ctor
    //-------------------------------------------------------------------------

    constructor(address genesis, uint256 burnCutoff_)
    {
        _genesis   = genesis;
        burnCutoff = burnCutoff_;
    }

    //-------------------------------------------------------------------------

    modifier ownsToken(uint256 tokenId) {
        require(IGenesis(_genesis).ownerOf(tokenId) == msg.sender, "not owner");
        _;
    }

    //-------------------------------------------------------------------------

    modifier isLive() {
        require(block.timestamp < burnCutoff, "burning not live");
        _;
    }

    //-------------------------------------------------------------------------
    // admin
    //-------------------------------------------------------------------------

    function setBurnCutoff(uint256 burnCutoff_)
        public
        onlyOwner
    {
        burnCutoff = burnCutoff_;
    }

    //-------------------------------------------------------------------------
    // methods
    //-------------------------------------------------------------------------

    /**
     * Burn token.
     */
    function burn(uint256 tokenId)
        external
        isLive
        ownsToken(tokenId)
    {
        IGenesis(_genesis).burn(tokenId);
    }

}