Lending.sol

Lending.sol

// SPDX-License-Identifier: MIT

pragma solidity 0.8.11;

library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

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);
    }
}

library SafeMath {
    /**
     * @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) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @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 sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @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) {
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts 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) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts 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) {
        require(b > 0, errorMessage);
        uint256 c = a / b;

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts 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 mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message 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,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }

    function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
        z = x < y ? x : y;
    }

    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
}

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() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

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

contract Lending is ReentrancyGuard, Ownable {

    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    struct Pool {
        uint id;
        int256 contractID;
        uint256 blockStart;
        uint256 blockEnd;
        uint256 depositAmount;
        uint256 balanceAmount;
        uint256 havestBalance;
        uint256 currentExtraReward;
        uint256 packagePercent;
        address addr;
        uint256 extraRewards;
        uint256 prepareRewards;
        uint256 rewardPerBlock;
    }

    mapping (uint => Pool) public peoples;

    uint public candidateCount;
    address public adaptorAddress;

    address public devAddress;

    IERC20 public JUTC;
    IERC20 public BUSD;

    uint256 public depositFee;
    uint256 public penaltyFee;
    uint256 public harvestFee;
    uint256 public devFee;

    address public busdVaultWalletAddress = 0x5ED1C1307D55CA4147433a915c16416392CAc1E9;
    address public jutcVaultWalletAddress = 0x5ED1C1307D55CA4147433a915c16416392CAc1E9;

    uint public TotalBlock1D = 28800; // 1 day block
    uint public TotalBlock18M = 15768000; // 18 months block

    uint public Contract18MPercent = 15000;

    constructor(address jutcAddress, address busdAddress) {
        JUTC = IERC20(jutcAddress);
        BUSD = IERC20(busdAddress);
        adaptorAddress = address(0x8d65605C63fFe73eE309C7503ac7c09AFD862305); // VM address
        devAddress = address(busdVaultWalletAddress);

        depositFee = 2500;
        penaltyFee = 2500;
        harvestFee = 0;
        devFee = 1000;
    }

    function deposit(int256 _contract, uint256 _amount) public nonReentrant {
        // require(_contract == 1, "invalid contract id");
        // uint256 fee = _amount.mul(depositFee).div(100).div(100);
        // BUSD.safeTransferFrom(
        //     address(msg.sender),
        //     busdVaultWalletAddress,
        //     fee
        // );
        // BUSD.safeTransferFrom(
        //     address(msg.sender),
        //     address(this),
        //     _amount - fee
        // );
        _deposit(Contract18MPercent,TotalBlock18M,_amount,_contract);
    }

    function _deposit(
        uint256 _packagePercent,
        // address _address,
        uint256 blockEstimated,
        uint256 _amount,
        // IERC20 BUSD,
        int256 _contract
    ) private {
        uint256 fee = _amount.mul(depositFee).div(100).div(100);
        BUSD.safeTransferFrom(
            address(msg.sender),
            busdVaultWalletAddress,
            fee
        );
        JUTC.safeTransferFrom(jutcVaultWalletAddress, address(this),_amount.mul(_packagePercent).div(100).div(100));
        uint256 toDev = _amount.mul(_packagePercent).div(100).div(100);
        JUTC.safeTransferFrom(jutcVaultWalletAddress, devAddress,toDev.mul(devFee).div(100).div(100));

        BUSD.safeTransferFrom(
            address(msg.sender),
            address(this),
            _amount - fee
        );
        uint256 percent = _packagePercent;
        uint256 totalRewardsPrepare = _amount.mul(_packagePercent).div(100).div(100);
        uint256 rewardPerBlock =
        (_amount.mul(percent).div(100).div(100)).div(blockEstimated);
        addHolder(
            _contract, 
            block.number, 
            block.number.add(blockEstimated), 
            _amount, 
            _amount - fee, 
            0, 
            0, 
            percent, 
            address(msg.sender), 
            0, 
            totalRewardsPrepare, 
            rewardPerBlock);
      
    }

    function withdraw(uint256 _uid) public nonReentrant {
        require(peoples[_uid].addr == msg.sender, "You do not own this id");
        require(peoples[_uid].balanceAmount > 0, "Not allow to transfer zero balance");
        if (peoples[_uid].contractID == 1) {
            _withdraw(
               _uid
            );
        } 
    }

    function _withdraw(
        uint256 _uid
    ) private {
        if(peoples[_uid].contractID == 1) {
            if (peoples[_uid].blockEnd > block.number) {
                uint256 penaltyAmount = peoples[_uid].balanceAmount.mul(penaltyFee).div(100).div(100);
                BUSD.safeTransfer(
                    busdVaultWalletAddress,
                    penaltyAmount
                );
                peoples[_uid].balanceAmount = peoples[_uid].balanceAmount.sub(penaltyAmount);
                BUSD.safeTransfer(address(msg.sender), peoples[_uid].balanceAmount);

                // calc reward here
                uint256 rewardCalc = block.number.sub(peoples[_uid].blockStart).mul(peoples[_uid].rewardPerBlock);
                uint256 totalReceivedReward = peoples[_uid].prepareRewards.sub(peoples[_uid].havestBalance).sub(rewardCalc);
                JUTC.safeTransfer(jutcVaultWalletAddress, rewardCalc.mul(harvestFee).div(100).div(100));
                JUTC.safeTransfer(address(msg.sender), rewardCalc.sub(rewardCalc.mul(harvestFee).div(100).div(100)));

                peoples[_uid].blockStart = block.number;
                JUTC.safeTransfer(adaptorAddress, totalReceivedReward);
                // burnJUTC = totalReceivedReward
                    
                peoples[_uid].balanceAmount = 0;
            } else {
                BUSD.safeTransfer(address(msg.sender), peoples[_uid].balanceAmount);
                peoples[_uid].balanceAmount = peoples[_uid].balanceAmount.sub(peoples[_uid].balanceAmount);
                uint256 rewardReceive;
                if ( peoples[_uid].blockEnd ==  peoples[_uid].blockStart) {
                    rewardReceive = 0;
                }else {
                    rewardReceive = peoples[_uid].prepareRewards.sub(peoples[_uid].havestBalance);
                }
                JUTC.safeTransfer(busdVaultWalletAddress, rewardReceive.mul(harvestFee).div(100).div(100));
                JUTC.safeTransfer(address(msg.sender), rewardReceive.sub(rewardReceive.mul(harvestFee).div(100).div(100)));
                peoples[_uid].balanceAmount = 0;
                if (peoples[_uid].blockStart == peoples[_uid].blockEnd) {
                    JUTC.safeTransfer(adaptorAddress, peoples[_uid].prepareRewards.sub(peoples[_uid].havestBalance));
                    // burnJUTC = peoples[_uid].prepareRewards.sub(peoples[_id].havestBalance)
                }
            }
        }
     }

    function harvest(uint256 _id) public nonReentrant {
        require(peoples[_id].addr == msg.sender, "You do not own this id");
        require(peoples[_id].balanceAmount > 0, "Already withdraw token");
        uint256 rewards;
        if (peoples[_id].blockEnd > block.number) {
            rewards =
            (block.number.sub(peoples[_id].blockStart)).mul(peoples[_id].rewardPerBlock);
        } else {
            rewards =
            peoples[_id].blockEnd.sub(peoples[_id].blockStart).mul(peoples[_id].rewardPerBlock);
        }
        _harvestRewards(rewards, _id);
        if (block.number > peoples[_id].blockEnd) {
          peoples[_id].blockStart =  peoples[_id].blockEnd;
        } else {
          peoples[_id].blockStart = block.number;
        }
    }

    function _harvestRewards(
        uint256 _rewardAmount,
        uint _id
    ) private {
        uint256 feeAmount = _rewardAmount.mul(harvestFee).div(100).div(100);
        JUTC.safeTransfer(jutcVaultWalletAddress, feeAmount);
        JUTC.safeTransfer(address(msg.sender), _rewardAmount.sub(feeAmount));
        peoples[_id].havestBalance = peoples[_id].havestBalance.add(_rewardAmount);
    }

    function currentExtraRewardSum() external view returns (uint256) {
        uint256 sumExtra;
        for (uint i = 0; i < candidateCount; i++) {
              Pool storage people = peoples[i];
                if (people.addr == msg.sender) {
                    sumExtra = sumExtra.add(people.extraRewards);
                }
         }
        return sumExtra;
    }

    function currentRewardByID(uint256 _id) external view returns (uint256) {
        uint256 rewardAmount;
        if (peoples[_id].balanceAmount == 0) {
            return 0;
        }
        if (peoples[_id].blockEnd > block.number) {
            rewardAmount = (block.number.sub(peoples[_id].blockStart)).mul(peoples[_id].rewardPerBlock);
        }else {
            rewardAmount = (peoples[_id].blockEnd.sub(peoples[_id].blockStart)).mul(peoples[_id].rewardPerBlock);
        }
        return rewardAmount;
    }
    
    function currentExtraRewardByID(uint256 _id) external view returns (uint256) {
        return peoples[_id].extraRewards;
    }

    function addHolder(
        int256  _contract, 
        uint256  _blockStart,
        uint256  _blockEnd,
        uint256  _depositAmount,
        uint256  _balanceAmount,
        uint256  _havestBalance,
        uint256  _currentExtraReward,
        uint256  _packagePercent,
        address  _address,
        uint256  _extraRewards,
        uint256  _prepareReward,
        uint256 _rewardPerBlock
    ) private {
        peoples[candidateCount] = Pool(candidateCount, _contract, _blockStart, _blockEnd, _depositAmount, _balanceAmount, _havestBalance, _currentExtraReward, _packagePercent, _address, _extraRewards, _prepareReward, _rewardPerBlock);
        candidateCount++;
    }

  function get(uint _candidateId) public view returns(Pool memory) {
    return peoples[_candidateId];
  }

  function getPeople() public view returns (address[] memory){
      address[] memory addr = new address[](candidateCount);
      for (uint i = 0; i < candidateCount; i++) {
          Pool storage people = peoples[i];
          addr[i] = people.addr;
      }
      return (addr);
  }
  
  function getPeoples(address _address) public view returns (Pool[] memory){
      Pool[] memory id = new Pool[](candidateCount);
      for (uint i = 0; i < candidateCount; i++) {
          Pool storage people = peoples[i];
            if (people.addr == address(_address)) {
                id[i] = people;
            }
      }
      return id;
  }

}