// File: /contracts/cryptofoxes/CryptoFoxesCalculationOrigin.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "./ICryptoFoxesOrigins.sol";
import "./ICryptoFoxesCalculationOrigin.sol";
import "./CryptoFoxesUtility.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";

// @author: miinded.com

contract CryptoFoxesCalculationOrigin is ICryptoFoxesCalculationOrigin, CryptoFoxesUtility{
    using SafeMath for uint256;
    uint256 public constant baseRateOrigins = 6 * 10**18;

    function calculationRewards(address _contract, uint256[] memory _tokenIds, uint256 _currentTimestamp) public override view returns(uint256){
        uint256 _currentTime = ICryptoFoxesOrigins(_contract)._currentTime(_currentTimestamp);
        uint256 totalSeconds = 0;
        for (uint256 i = 0; i < _tokenIds.length; i++) {
            totalSeconds = totalSeconds.add( _currentTime.sub(ICryptoFoxesOrigins(_contract).getStackingToken(_tokenIds [i])));
        }

        return baseRateOrigins.mul(totalSeconds).div(86400);
    }
    function claimRewards(address _contract, uint256[] memory _tokenIds, address _owner) public override isFoxContract {
        require(!isPaused(), "Contract paused");

        uint256 reward = calculationRewards(_contract, _tokenIds, block.timestamp);
        _addRewards(_owner, reward);
        _withdrawRewards(_owner);
    }
}

// File: /contracts/cryptofoxes/ICryptoFoxesSteak.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// @author: miinded.com

interface ICryptoFoxesSteak {
    function addRewards(address _to, uint256 _amount) external;
    function withdrawRewards(address _to) external;
    function isPaused() external view returns(bool);
    function dateEndRewards() external view returns(uint256);
}
// File: /contracts/cryptofoxes/ICryptoFoxesOrigins.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// @author: miinded.com

interface ICryptoFoxesOrigins {
    function getStackingToken(uint256 tokenId) external view returns(uint256);
    function _currentTime(uint256 _currentTimestamp) external view returns(uint256);
}
// File: /contracts/cryptofoxes/ICryptoFoxesCalculationOrigin.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// @author: miinded.com

interface ICryptoFoxesCalculationOrigin {
    function calculationRewards(address _contract, uint256[] calldata _tokenIds, uint256 _currentTimestamp) external view returns(uint256);
    function claimRewards(address _contract, uint256[] calldata _tokenIds, address _owner) external;
}
// File: /contracts/cryptofoxes/CryptoFoxesUtility.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./ICryptoFoxesSteak.sol";
import "./CryptoFoxesAllowed.sol";

// @author: miinded.com

abstract contract CryptoFoxesUtility is Ownable,CryptoFoxesAllowed, ICryptoFoxesSteak {
    using SafeMath for uint256;

    uint256 public endRewards = 0;
    ICryptoFoxesSteak public cryptofoxesSteak;

    function setCryptoFoxesSteak(address _contract) public onlyOwner {
        cryptofoxesSteak = ICryptoFoxesSteak(_contract);
        setAllowedContract(_contract, true);
        synchroEndRewards();
    }
    function _addRewards(address _to, uint256 _amount) internal {
        cryptofoxesSteak.addRewards(_to, _amount);
    }
    function addRewards(address _to, uint256 _amount) public override isFoxContract  {
        _addRewards(_to, _amount);
    }
    function withdrawRewards(address _to) public override isFoxContract {
        cryptofoxesSteak.withdrawRewards(_to);
    }
    function _withdrawRewards(address _to) internal {
        cryptofoxesSteak.withdrawRewards(_to);
    }
    function isPaused() public view override returns(bool){
        return cryptofoxesSteak.isPaused();
    }
    function synchroEndRewards() public {
        endRewards = cryptofoxesSteak.dateEndRewards();
    }
    function dateEndRewards() public view override returns(uint256){
        require(endRewards > 0, "End Rewards error");
        return endRewards;
    }
    function _currentTime(uint256 _currentTimestamp) public view virtual returns (uint256) {
        return min(_currentTimestamp, dateEndRewards());
    }
    function min(uint256 a, uint256 b) public pure returns (uint256){
        return a > b ? b : a;
    }
}
// File: /contracts/cryptofoxes/CryptoFoxesAllowed.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./ICryptoFoxesSteak.sol";

// @author: miinded.com

abstract contract CryptoFoxesAllowed is Ownable {

    mapping (address => bool) public allowedContracts;

    modifier isFoxContract() {
        require(allowedContracts[_msgSender()] == true, "Not allowed");
        _;
    }
    
    modifier isFoxContractOrOwner() {
        require(allowedContracts[_msgSender()] == true || _msgSender() == owner(), "Not allowed");
        _;
    }

    function setAllowedContract(address _contract, bool _allowed) public onlyOwner {
        allowedContracts[_contract] = _allowed;
    }

}
// File: @openzeppelin/contracts/utils/math/SafeMath.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

// File: @openzeppelin/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) {
        return msg.data;
    }
}

// File: @openzeppelin/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() {
        _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);
    }
}