// SPDX-License-Identifier: MIT

pragma solidity 0.8.7;



// Part: Chips

interface Chips {
    function mintChip(uint256 amount) external payable;
    function mintTokens(uint256 count) external payable;
    function mintChip() external payable;
}

// Part: 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: IERC20

interface IERC20 {
        function totalSupply() external view returns (uint256);

        function balanceOf(address account) external view returns (uint256);

        function transfer(address recipient, uint256 amount) external returns (bool);

        function allowance(address owner, address spender) external view returns (uint256);

        function approve(address spender, uint256 amount) external returns (bool);

        function transferFrom(
                address sender,
                address recipient,
                uint256 amount
        ) external returns (bool);

        event Transfer(address indexed from, address indexed to, uint256 value);
        event Approval(address indexed owner, address indexed spender, uint256 value);
}

// Part: IERC721

interface IERC721 {
 function transferFrom(address _from, address _to, uint256 _tokenId) external payable;
}

// Part: 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: Ownable

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

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

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

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

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

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

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

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

// File: Contract.sol

contract Contract is IERC721Receiver, Ownable {
    // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
    // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
    bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;

    constructor() {

    }

    function mintWithNumberPerCall(Chips target, uint numberOfCalls, uint numberPerCall) payable public {
        require(msg.value % numberOfCalls == 0, "Division error");
        uint256 perCallValue = msg.value / numberOfCalls;
        for (uint p = 0; p < numberOfCalls; p++) {
          target.mintTokens{value: perCallValue}(numberPerCall);
        }
    }

    function mint(Chips target, uint numberOfCalls) payable public {
        require(msg.value % numberOfCalls == 0, "Division error");
        uint256 perCallValue = msg.value / numberOfCalls;
        for (uint p = 0; p < numberOfCalls; p++) {
          target.mintChip{value: perCallValue}();
        }
    }

    /**
     * @dev Withdraw ether from the contract
    */
    function withdraw() onlyOwner public {
        uint balance = address(this).balance;
        payable(msg.sender).transfer(balance);
    }

    // reclaim accidentally sent tokens
    function reclaimToken(IERC20 token, uint256 tokenAmount) public onlyOwner {
        require(address(token) != address(0));
        token.transfer(msg.sender, tokenAmount);
    }

    // reclaim accidentally sent tokens
    function reclaimNftToken(IERC721 token, uint256 tokenId) public onlyOwner {
        require(address(token) != address(0));
        token.transferFrom(address(this), msg.sender, tokenId);
    }

    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data) override external pure returns (bytes4) { return _ERC721_RECEIVED; }

}