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



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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/security/ReentrancyGuard.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// File: @openzeppelin/contracts/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;
    }
}

// File: @openzeppelin/contracts/utils/math/SafeMath.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/SafeMath.sol)

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 generally not needed starting with Solidity 0.8, since 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 subtraction 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: contracts/CashBriefcase.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;
/*⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣀⣀⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⢦⡀⠉⠙⢦⡀⠀⠀⣀⣠⣤⣄⣀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⣀⡤⠤⠴⠶⠤⠤⢽⣦⡀⠀⢹⡴⠚⠁⠀⢀⣀⣈⣳⣄⠀⠀
⠀⠀⠀⠀⠀⢠⠞⣁⡤⠴⠶⠶⣦⡄⠀⠀⠀⠀⠀⠀⠀⠶⠿⠭⠤⣄⣈⠙⠳⠀
⠀⠀⠀⠀⢠⡿⠋⠀⠀⢀⡴⠋⠁⠀⣀⡖⠛⢳⠴⠶⡄⠀⠀⠀⠀⠀⠈⠙⢦⠀
⠀⠀⠀⠀⠀⠀⠀⠀⡴⠋⣠⠴⠚⠉⠉⣧⣄⣷⡀⢀⣿⡀⠈⠙⠻⡍⠙⠲⢮⣧
⠀⠀⠀⠀⠀⠀⠀⡞⣠⠞⠁⠀⠀⠀⣰⠃⠀⣸⠉⠉⠀⠙⢦⡀⠀⠸⡄⠀⠈⠟
⠀⠀⠀⠀⠀⠀⢸⠟⠁⠀⠀⠀⠀⢠⠏⠉⢉⡇⠀⠀⠀⠀⠀⠉⠳⣄⢷⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡾⠤⠤⢼⠀⠀⠀⠀⠀⠀⠀⠀⠘⢿⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡇⠀⠀⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⠉⠉⠉⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣀⣀⣀⣻⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⣀⣀⡤⠤⠤⣿⠉⠉⠉⠘⣧⠤⢤⣄⣀⡀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⢀⡤⠖⠋⠉⠀⠀⠀⠀⠀⠙⠲⠤⠤⠴⠚⠁⠀⠀⠀⠉⠉⠓⠦⣄⠀⠀⠀
⢀⡞⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠙⣄⠀
⠘⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠒⠚⠀
   ____    _    ____  _   _   ____  ____  ___ _____ _____ ____    _    ____  _____ 
  / ___|  / \  / ___|| | | | | __ )|  _ \|_ _| ____|  ___/ ___|  / \  / ___|| ____|
 | |     / _ \ \___ \| |_| | |  _ \| |_) || ||  _| | |_ | |     / _ \ \___ \|  _|  
 | |___ / ___ \ ___) |  _  | | |_) |  _ < | || |___|  _|| |___ / ___ \ ___) | |___ 
  \____/_/   \_\____/|_| |_| |____/|_| \_\___|_____|_|   \____/_/   \_\____/|_____|

    Twitter: https://twitter.com/fraudeth_gg
    Telegram: http://t.me/fraudportal
    Website: https://fraudeth.gg
    Docs: https://docs.fraudeth.gg
  
  */
                                                                                   
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

import "./IBribeToken.sol";
import "./IFraudToken.sol";

contract CashBriefcase is Ownable, ReentrancyGuard {
    IBribeToken public bribe;
    IFraudToken public fraud;
    using SafeMath for uint256;

    mapping(address => uint256) public deposits;
    mapping(address => uint256) public lastClaim;
    mapping(address => uint256) public lastDeposit;
    mapping(address => uint256) public depositEpoch;

    uint256 public totalDeposits;

    bool public emergencyMode = false;

    event Deposit(address indexed user, uint256 amount);
    event Withdraw(address indexed user, uint256 amount);
    event RewardClaimed(address indexed user, uint256 amount);

    constructor(address _bribe, address _fraud) {
        bribe = IBribeToken(_bribe);
        fraud = IFraudToken(_fraud);
    }

    function deposit(uint256 _amount) external {
        require(_amount > 0, "Invalid amount");
        require(bribe.balanceOf(msg.sender) >= _amount, "Insufficient balance");
        require(emergencyMode == false, "Contract is in emergency mode, deposits not allowed");
        // transfer the tokens to this contract
        bribe.burn(msg.sender, _amount);

        // update the user's deposit amount and the total deposit amount
        deposits[msg.sender] = deposits[msg.sender].add(_amount);
        lastDeposit[msg.sender] = block.timestamp;

        totalDeposits = totalDeposits.add(_amount);

        emit Deposit(msg.sender, _amount);
    }

    function withdraw(uint256 _amount) external {
        require(deposits[msg.sender] >= _amount, "Withdrawal amount exceeds deposit");
        require(block.timestamp.sub(lastDeposit[msg.sender]) > 6 hours || emergencyMode == true, "Can only withdraw if last deposit was more than 6 hours / 1 epoch");

        // update the user's deposit amount and the total deposit amount
        if(emergencyMode == false && pendingReward(msg.sender) > 0){
            claimReward(msg.sender);
        }

        deposits[msg.sender] = deposits[msg.sender].sub(_amount);
        totalDeposits = totalDeposits.sub(_amount);

        // transfer the tokens back to the user
        bribe.mint(msg.sender, _amount);

        emit Withdraw(msg.sender, _amount);
    }

    function claimReward(address user) public nonReentrant {
        require (msg.sender == user, "Only the user can claim their reward");
        require(emergencyMode == false, "Contract is in emergency mode, reward claims not allowed");
        uint256 reward = calculateReward(msg.sender);
        require(reward > 0, "No rewards available");
        require(block.timestamp.sub(lastClaim[msg.sender]) > 1 days, "Can only claim once per day");
        // require last deposit > 6h ago
        require(block.timestamp.sub(lastDeposit[msg.sender]) > 6 hours, "Can only claim if last deposit was more than 6 hours ago");

        // decrease the fraud token balance of the contract
        // and increase the fraud token balance of the user
        fraud.transfer(msg.sender, reward);
        lastClaim[msg.sender] = block.timestamp;
        emit RewardClaimed(msg.sender, reward);
    }

    function pendingReward(address _user) public view returns (uint256) {
        if(block.timestamp.sub(lastClaim[_user]) < 1 days){ return 0; }
        if(block.timestamp.sub(lastDeposit[_user]) < 6 hours){ return 0; }
        if(fraud.balanceOf(address(this)) == 0){ return 0; }
        return calculateReward(_user);
    }

    function calculateReward(address _user) public view returns (uint256) {
        // for example, the user's reward is proportional to their share of the total deposits
        uint256 share = deposits[_user].mul(1e18).div(totalDeposits); // multiply by 1e18 to avoid division truncation
        uint256 reward = fraud.balanceOf(address(this)).mul(share).div(1e18); // divide by 1e18 to correct for the multiplication above
        return reward;
    }

    function getSharePercentage(address _user) public view returns (uint256) {
        if(totalDeposits == 0) return 0;
        uint256 sharePercentage = deposits[_user].mul(1e18).div(totalDeposits);
        return sharePercentage;
    }
    function toggleEmergency() external onlyOwner {
        emergencyMode = !emergencyMode;
    }
}

// File: contracts/IBribeToken.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IBribeToken {
    function mint(address to, uint256 amount) external;
    function balanceOf(address who) external view returns (uint256);
    function burn(address to, uint256 amount) external;
    function transferFrom(address from, address to, uint256 value) external returns (bool);
    function transfer(address to, uint256 value) external returns (bool);
} 
// File: contracts/IFraudToken.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IFraudToken {
    function mint(address to, uint256 amount) external;
    function totalSupply() external view returns (uint256);
    function transferUnderlying(address to, uint256 value) external returns (bool);
    function fragmentToFraud(uint256 value) external view returns (uint256);
    function fraudToFragment(uint256 fraud) external view returns (uint256);
    function balanceOfUnderlying(address who) external view returns (uint256);
    function balanceOf(address who) external view returns (uint256);
    function approve(address spender, uint256 value) external returns (bool);
    function transferFrom(address from, address to, uint256 value) external returns (bool);
    function getCurrentEpoch() external view returns (uint256);
    function transfer(address to, uint256 value) external returns (bool);

    function burn(address from, uint256 amount) external;
    function rebase(
        uint256 epoch,
        uint256 indexDelta,
        bool positive
    ) external returns (uint256);
}