// SPDX-License-Identifier: MIT

pragma solidity 0.6.6;

/**
 * @dev Collection of functions related to the address type
 */
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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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 v3.3._
     */
    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 v3.3._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

pragma solidity ^0.6.6;
import "./IClientRecordShema.sol";
pragma experimental ABIEncoderV2;

interface IClientRecord is IClientRecordSchema {
    function doesClientRecordExist(address depositor)
        external
        view
        returns (bool);

    function getRecordIndex(address depositor) external view returns (uint256);

    function createClientRecord(
        address payable _address,
        uint256 underlyingTotalDeposits,
        uint256 underlyingTotalWithdrawn,
        uint256 derivativeBalance,
        uint256 derivativeTotalDeposits,
        uint256 derivativeTotalWithdrawn
    ) external;

    function updateClientRecord(
        address payable _address,
        uint256 underlyingTotalDeposits,
        uint256 underlyingTotalWithdrawn,
        uint256 derivativeBalance,
        uint256 derivativeTotalDeposits,
        uint256 derivativeTotalWithdrawn
    ) external;

    function getLengthOfClientRecords() external view returns (uint256);

    function getClientRecordByIndex(uint256 index)
        external
        view
        returns (
            address payable _address,
            uint256 underlyingTotalDeposits,
            uint256 underlyingTotalWithdrawn,
            uint256 derivativeBalance,
            uint256 derivativeTotalDeposits,
            uint256 derivativeTotalWithdrawn
        );

    function getClientRecordByAddress(address depositor)
        external
        view
        returns (
            address payable _address,
            uint256 underlyingTotalDeposits,
            uint256 underlyingTotalWithdrawn,
            uint256 derivativeBalance,
            uint256 derivativeTotalDeposits,
            uint256 derivativeTotalWithdrawn
        );

    function activateStorageOracle(address oracle) external;

    function deactivateStorageOracle(address oracle) external;

    function reAssignStorageOracle(address newOracle) external;

     function GetRecordIndexFromDepositor(address member) external view returns(uint);
     
     function GetRecordIdFromRecordIndexAndDepositorRecord(uint recordIndex, address depositor) external view returns(uint);
      
     function CreateDepositRecordMapping(uint amount, uint lockPeriodInSeconds,uint depositDateInSeconds, address payable depositor, bool hasWithdrawn) external returns (uint);
    
     function UpdateDepositRecordMapping(uint DepositRecordId, uint amount, uint lockPeriodInSeconds,uint depositDateInSeconds, address payable depositor, bool hasWithdrawn) external;

     function GetRecordById(uint depositRecordId) external view returns(uint recordId, address payable depositorId, uint amount, uint depositDateInSeconds, uint lockPeriodInSeconds, bool hasWithdrawn);
     
     function GetRecords() external view returns (FixedDepositRecord [] memory);
     
     function CreateDepositorToDepositRecordIndexToRecordIDMapping(address payable depositor, uint recordId) external;
     
     function CreateDepositorAddressToDepositRecordMapping (address payable depositor, uint recordId, uint amountDeposited, uint lockPeriodInSeconds, uint depositDateInSeconds, bool hasWithdrawn) external;
}

pragma solidity 0.6.6;

interface IClientRecordSchema {
    struct ClientRecord {
        bool exists;
        address payable _address;
        uint256 underlyingTotalDeposits;
        uint256 underlyingTotalWithdrawn;
        uint256 derivativeBalance;
        uint256 derivativeTotalDeposits;
        uint256 derivativeTotalWithdrawn;
    }
 struct FixedDepositRecord{
        uint256 recordId;
        address payable depositorId;
        bool hasWithdrawn;
        uint256 amount;
        uint256 depositDateInSeconds;
        uint256 lockPeriodInSeconds;
    }
    struct RecordIndex {
        bool exists;
        uint256 index;
    }
}

pragma solidity 0.6.6;

interface IDaiLendingService {
    function getPricePerFullShare() external view returns (uint256);

    function save(uint256 amount) external;

    function userShares() external view returns (uint256);

    function userDaiBalance() external view returns (uint256);

    function GetUserGrossRevenue() external view returns (uint256);

    function GetNetRevenue() external view returns (uint256);

    function GetUserDepositedDaiBalance() external view returns (uint256);

    function Withdraw(uint256 amount) external;
    
    function WithdrawByShares(uint amount, uint sharesAmount) external;
    
    function GetDaiLendingAdapterAddress() external view returns (address);
    
    function WithdrawBySharesOnly(uint sharesAmount) external;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.6;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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
    );
}

pragma solidity 0.6.6;

interface IGroupSchema {
    struct Group {
        uint256 id;
        string name;
        string symbol;
        bool exists;
        address payable creatorAddress;
    }

    struct Cycle {
        uint256 id;
        uint256 groupId;
        uint256 numberOfDepositors;
        uint256 cycleStartTimeStamp;
        uint256 cycleDuration;
        uint256 maximumSlots;
        uint256 cycleStakeAmount;
        // represents the total stakes of every cycle member deposits
        uint256 totalStakes;
        //represents the total stakes of every cycle member withdrawal
        uint256 stakesClaimed;
        bool hasMaximumSlots;
        bool exists;
        CycleStatus cycleStatus;
        // represents the number of cycle stakes that user's have cashed out on before the cycle has ended
        uint256 stakesClaimedBeforeMaturity;
    }

    struct CycleFinancial {
        bool exists;
        uint256 cycleId;
        //total underlying asset deposited into contract
        uint256 underlyingTotalDeposits;
        //total underlying asset that have been withdrawn by cycle members
        uint256 underlyingTotalWithdrawn;
        // underlying amount gotten after lending period has ended and shares have been reedemed for underlying asset;
        uint256 underlyingBalance;
        // lending shares representation of amount deposited in lending protocol
        uint256 derivativeBalance;
        // represents the total underlying crypto amount that has been cashed out before the cycle ended
        uint256 underylingBalanceClaimedBeforeMaturity;
        // represents the total derivative crypto amount that has been cashed out on before the cycle ended
        uint256 derivativeBalanceClaimedBeforeMaturity;
    }

    struct CycleMember {
        uint256 cycleId;
        uint256 groupId;
        uint256 totalLiquidityAsPenalty;
        uint256 numberOfCycleStakes;
        uint256 stakesClaimed;
        bool exist;
        address payable _address;
        bool hasWithdrawn;
    }

    struct Member {
        bool exists;
        address payable _address;
    }

    struct GroupMember {
        bool exists;
        address payable _address;
        uint256 groupId;
    }

    struct RecordIndex {
        bool exists;
        uint256 index;
    }

    enum CycleStatus {NOT_STARTED, ONGOING, ENDED}
}

pragma solidity 0.6.6;


interface IRewardConfig{

    function CalculateIndividualSavingsReward(uint totalCycleTimeInSeconds, uint amountDeposited) external view returns(uint);

    function CalculateCooperativeSavingsReward(uint totalCycleTimeInSeconds, uint amountDeposited) external view returns(uint);
    
    function CalculateEsusuReward(uint totalCycleTimeInSeconds, uint amountDeposited) external view returns(uint);
}

pragma solidity ^0.6.6;
import './ISavingsConfigSchema.sol';





interface  ISavingsConfig is ISavingsConfigSchema {
   
    function getRuleSet(string calldata ruleKey) external returns (uint ,uint , uint ,  bool ,RuleDefinition );
    function getRuleManager(string calldata ruleKey) external returns (address);
    function changeRuleCreator(string calldata ruleKey, address newRuleManager) external;
    function createRule(string calldata ruleKey, uint minimum, uint maximum, uint exact, RuleDefinition ruleDefinition) external;
    function modifyRule(string calldata ruleKey, uint minimum, uint maximum, uint exact,  RuleDefinition  ruleDefinition ) external;
    function disableRule(string calldata ruleKey) external;
    function enableRule(string calldata ruleKey)  external;
    
   
    
}

pragma solidity 0.6.6;

interface ISavingsConfigSchema {
    struct RuleSet {
        uint256 minimum;
        uint256 maximum;
        uint256 exact;
        bool applies;
        RuleDefinition ruleDefinition;
        bool exists;
    }

    enum RuleDefinition {RANGE, VALUE}
}

pragma solidity ^0.6.6;
import "./SafeMath.sol";
import "./Ownable.sol";
import "./IERC20.sol";

interface ITreasury {
    function depositToken(address token) external;

    function getEtherBalance() external view returns (uint256);

    function getTokenBalance(address token) external view returns (uint256);

    function withdrawEthers(uint256 amount) external;

    function withdrawTokens(address tokenAddress, uint256 amount) external;
}

pragma solidity 0.6.6;

interface IXendToken {
    function mint(address payable recipient, uint256 amount) external;
}

pragma solidity 0.6.6;

/*
 * Ownable
 *
 * Base contract with an owner.
 * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner.
 */
contract Ownable {
    address payable public owner;

    constructor() internal {
        owner = msg.sender;
    }

    modifier onlyOwner() {
        require(msg.sender == owner, "Unauthorized access to contract");
        _;
    }

    function transferOwnership(address payable newOwner) public onlyOwner {
        if (newOwner != address(0)) {
            owner = newOwner;
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 () internal {
        _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 make 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;
    }
}

pragma solidity >=0.6.6;


import "./IERC20.sol";
import "./SafeMath.sol";
import "./Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    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'
        // solhint-disable-next-line max-line-length
        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).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _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
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

pragma solidity 0.6.6;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
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) {
        // 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 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;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        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;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.6;

import "./IClientRecordShema.sol";
import "./IGroupSchema.sol";
import "./SafeERC20.sol";
import "./ReentrancyGuard.sol";
import "./SafeMath.sol";
import "./Ownable.sol";
import "./IDaiLendingService.sol";
import "./IRewardConfig.sol";
import "./IClientRecord.sol";
import "./IERC20.sol";
import "./Address.sol";
import "./ISavingsConfig.sol";
import "./ISavingsConfigSchema.sol";
import "./ITreasury.sol";
import "./IXendToken.sol";

contract XendFinanceIndividual_Yearn_V1 is
    Ownable,
    IClientRecordSchema,
    ISavingsConfigSchema,
    ReentrancyGuard
{
    using SafeMath for uint256;

    using SafeERC20 for IERC20;

    using Address for address payable;

    event UnderlyingAssetDeposited(
        address payable user,
        uint256 underlyingAmount,
        uint256 derivativeAmount,
        uint256 balance
    );

    event DerivativeAssetWithdrawn(
        address payable user,
        uint256 underlyingAmount,
        uint256 derivativeAmount,
        uint256 balance
    );

    event XendTokenReward(
        uint256 date,
        address payable recipient,
        uint256 amount
    );

    IDaiLendingService lendingService;
    IERC20 daiToken;
    IClientRecord clientRecordStorage;
    IRewardConfig rewardConfig;
    ISavingsConfig savingsConfig;
    IERC20 derivativeToken;
    ITreasury treasury;
    IXendToken xendToken;

    bool isDeprecated;

    uint256 minLockPeriod = 7890000; //minimum lock period is three months by default

    mapping(address => uint256) MemberToXendTokenRewardMapping; //  This tracks the total amount of xend token rewards a member has received

      uint256 _totalTokenReward;      //  This tracks the total number of token rewards distributed on the individual savings

      

    address LendingAdapterAddress;

    string constant XEND_FINANCE_COMMISION_DIVISOR =
        "XEND_FINANCE_COMMISION_DIVISOR";
    string constant XEND_FINANCE_COMMISION_DIVIDEND =
        "XEND_FINANCE_COMMISION_DIVIDEND";

    constructor(
        address lendingServiceAddress,
        address tokenAddress,
        address clientRecordStorageAddress,
        address savingsConfigAddress,
        address derivativeTokenAddress,
        address rewardConfigAddress,
        address xendTokenAddress,
        address treasuryAddress
    ) public {
        lendingService = IDaiLendingService(lendingServiceAddress);
        daiToken = IERC20(tokenAddress);
        clientRecordStorage = IClientRecord(clientRecordStorageAddress);
        savingsConfig = ISavingsConfig(savingsConfigAddress);
        rewardConfig = IRewardConfig(rewardConfigAddress);
        derivativeToken = IERC20(derivativeTokenAddress);
        treasury = ITreasury(treasuryAddress);
        xendToken = IXendToken(xendTokenAddress);
    }

    function setAdapterAddress() external onlyOwner {
        LendingAdapterAddress = lendingService.GetDaiLendingAdapterAddress();
    }

    function setMinimumLockPeriod (uint256 minimumLockPeriod) external onlyNonDeprecatedCalls onlyOwner {
        minLockPeriod = minimumLockPeriod;
    }

     function GetTotalTokenRewardDistributed() external view returns(uint256){
            return _totalTokenReward;
        }

    function deprecateContract(address newServiceAddress)
        external
        onlyOwner
        onlyNonDeprecatedCalls
    {
        isDeprecated = true;
        clientRecordStorage.reAssignStorageOracle(newServiceAddress);
        uint256 derivativeTokenBalance =
            derivativeToken.balanceOf(address(this));
        derivativeToken.safeTransfer(newServiceAddress, derivativeTokenBalance);
    }

    function _UpdateMemberToXendTokeRewardMapping(
        address member,
        uint256 rewardAmount
    ) internal onlyNonDeprecatedCalls {
        MemberToXendTokenRewardMapping[member] = MemberToXendTokenRewardMapping[
            member
        ]
            .add(rewardAmount);
    }

    function GetMemberXendTokenReward(address member)
        external
        view
        returns (uint256)
    {
        return MemberToXendTokenRewardMapping[member];
    }

    function doesClientRecordExist(address depositor)
        external
        view
        onlyNonDeprecatedCalls
        returns (bool)
    {
        return clientRecordStorage.doesClientRecordExist(depositor);
    }

    function getClientRecord(address depositor)
        external
        onlyNonDeprecatedCalls
        returns (
            address payable _address,
            uint256 underlyingTotalDeposits,
            uint256 underlyingTotalWithdrawn,
            uint256 derivativeBalance,
            uint256 derivativeTotalDeposits,
            uint256 derivativeTotalWithdrawn
        )
    {
        ClientRecord memory clientRecord = _getClientRecordByAddress(depositor);
        return (
            clientRecord._address,
            clientRecord.underlyingTotalDeposits,
            clientRecord.underlyingTotalWithdrawn,
            clientRecord.derivativeBalance,
            clientRecord.derivativeTotalDeposits,
            clientRecord.derivativeTotalWithdrawn
        );
    }

    function getClientRecord()
        external
        onlyNonDeprecatedCalls
        returns (
            address payable _address,
            uint256 underlyingTotalDeposits,
            uint256 underlyingTotalWithdrawn,
            uint256 derivativeBalance,
            uint256 derivativeTotalDeposits,
            uint256 derivativeTotalWithdrawn
        )
    {
        ClientRecord memory clientRecord =
            _getClientRecordByAddress(msg.sender);

        return (
            clientRecord._address,
            clientRecord.underlyingTotalDeposits,
            clientRecord.underlyingTotalWithdrawn,
            clientRecord.derivativeBalance,
            clientRecord.derivativeTotalDeposits,
            clientRecord.derivativeTotalWithdrawn
        );
    }

    function getClientRecordByIndex(uint256 index)
        external
        onlyNonDeprecatedCalls
        returns (
            address payable _address,
            uint256 underlyingTotalDeposits,
            uint256 underlyingTotalWithdrawn,
            uint256 derivativeBalance,
            uint256 derivativeTotalDeposits,
            uint256 derivativeTotalWithdrawn
        )
    {
        ClientRecord memory clientRecord = _getClientRecordByIndex(index);
        return (
            clientRecord._address,
            clientRecord.underlyingTotalDeposits,
            clientRecord.underlyingTotalWithdrawn,
            clientRecord.derivativeBalance,
            clientRecord.derivativeTotalDeposits,
            clientRecord.derivativeTotalWithdrawn
        );
    }

    function _getClientRecordByIndex(uint256 index)
        internal
        returns (ClientRecord memory)
    {
        (
            address payable _address,
            uint256 underlyingTotalDeposits,
            uint256 underlyingTotalWithdrawn,
            uint256 derivativeBalance,
            uint256 derivativeTotalDeposits,
            uint256 derivativeTotalWithdrawn
        ) = clientRecordStorage.getClientRecordByIndex(index);
        return
            ClientRecord(
                true,
                _address,
                underlyingTotalDeposits,
                underlyingTotalWithdrawn,
                derivativeBalance,
                derivativeTotalDeposits,
                derivativeTotalWithdrawn
            );
    }

    function _getClientRecordByAddress(address member)
        internal
        view
        returns (ClientRecord memory)
    {
        (
            address payable _address,
            uint256 underlyingTotalDeposits,
            uint256 underlyingTotalWithdrawn,
            uint256 derivativeBalance,
            uint256 derivativeTotalDeposits,
            uint256 derivativeTotalWithdrawn
        ) = clientRecordStorage.getClientRecordByAddress(member);

        return
            ClientRecord(
                true,
                _address,
                underlyingTotalDeposits,
                underlyingTotalWithdrawn,
                derivativeBalance,
                derivativeTotalDeposits,
                derivativeTotalWithdrawn
            );
    }

    function withdraw(uint256 derivativeAmount)
        external
        onlyNonDeprecatedCalls
    {
        address payable recipient = msg.sender;
        _withdraw(recipient, derivativeAmount);
    }

    function withdrawDelegate(
        address payable recipient,
        uint256 derivativeAmount
    ) external onlyNonDeprecatedCalls onlyOwner {
        _withdraw(recipient, derivativeAmount);
    }

    function WithdrawFromFixedDeposit(
        uint256 recordId,
        uint256 derivativeAmount
    ) external onlyNonDeprecatedCalls {
        address payable recipient = msg.sender;

        FixedDepositRecord memory depositRecord =
            _getFixedDepositRecordById(recordId);

        uint256 depositDate = depositRecord.depositDateInSeconds;

        uint256 lockPeriod = depositRecord.lockPeriodInSeconds;

        _validateLockTimeHasElapsedAndHasNotWithdrawn(recordId);

        uint256 balanceBeforeWithdraw = lendingService.userDaiBalance();

        lendingService.WithdrawBySharesOnly(derivativeAmount);

        uint256 balanceAfterWithdraw = lendingService.userDaiBalance();

        uint256 amountOfUnderlyingAssetWithdrawn =
            balanceBeforeWithdraw.sub(balanceAfterWithdraw);

        uint256 commissionFees =
            _computeXendFinanceCommisions(amountOfUnderlyingAssetWithdrawn);

        uint256 amountToSendToDepositor =
            amountOfUnderlyingAssetWithdrawn.sub(commissionFees);

        daiToken.safeTransfer(recipient, amountToSendToDepositor);

        if (commissionFees > 0) {
            daiToken.approve(address(treasury), commissionFees);
            treasury.depositToken(address(daiToken));
        }

        clientRecordStorage.UpdateDepositRecordMapping(
            recordId,
            derivativeAmount,
            lockPeriod,
            depositDate,
            msg.sender,
            true
        );
        clientRecordStorage.CreateDepositorAddressToDepositRecordMapping(
            recipient,
            depositRecord.recordId,
            depositRecord.amount,
            lockPeriod,
            depositDate,
            true
        );

        _rewardUserWithTokens(lockPeriod, derivativeAmount, recipient);

        emit DerivativeAssetWithdrawn(
            recipient,
            amountOfUnderlyingAssetWithdrawn,
            derivativeAmount,
            derivativeAmount
        );
    }

    function _withdraw(address payable recipient, uint256 derivativeAmount)
        internal
        nonReentrant
    {
        _validateUserBalanceIsSufficient(recipient, derivativeAmount);

        uint256 balanceBeforeWithdraw = lendingService.userDaiBalance();

        lendingService.WithdrawBySharesOnly(derivativeAmount);

        uint256 balanceAfterWithdraw = lendingService.userDaiBalance();

        uint256 amountOfUnderlyingAssetWithdrawn =
            balanceBeforeWithdraw.sub(balanceAfterWithdraw);

        uint256 commissionFees =
            _computeXendFinanceCommisions(amountOfUnderlyingAssetWithdrawn);

        uint256 amountToSendToDepositor =
            amountOfUnderlyingAssetWithdrawn.sub(commissionFees);

        daiToken.safeTransfer(recipient, amountToSendToDepositor);

        if (commissionFees > 0) {
            daiToken.approve(address(treasury), commissionFees);
            treasury.depositToken(address(daiToken));
        }

        ClientRecord memory clientRecord =
            _updateClientRecordAfterWithdrawal(
                recipient,
                amountOfUnderlyingAssetWithdrawn,
                derivativeAmount
            );
        _updateClientRecord(clientRecord);

        emit DerivativeAssetWithdrawn(
            recipient,
            amountOfUnderlyingAssetWithdrawn,
            derivativeAmount,
            clientRecord.derivativeBalance
        );
    }

    function _validateUserBalanceIsSufficient(
        address payable recipient,
        uint256 derivativeAmount
    ) internal {
        ClientRecord memory clientRecord = _getClientRecordByAddress(recipient);

        uint256 derivativeBalance = clientRecord.derivativeBalance;

        require(
            derivativeBalance >= derivativeAmount,
            "Withdrawal cannot be processes, reason: Insufficient Balance"
        );
    }

    function _computeXendFinanceCommisions(uint256 worthOfMemberDepositNow)
        internal
        returns (uint256)
    {
        uint256 dividend = _getDividend();
        uint256 divisor = _getDivisor();

        require(
            worthOfMemberDepositNow > 0,
            "member deposit really isn't worth much"
        );

        return worthOfMemberDepositNow.mul(dividend).div(divisor).div(100);
    }

    function _validateLockTimeHasElapsedAndHasNotWithdrawn(uint256 recordId)
        internal
    {
        FixedDepositRecord memory depositRecord =
            _getFixedDepositRecordById(recordId);

        uint256 lockPeriod = depositRecord.lockPeriodInSeconds;

        bool hasWithdrawn = depositRecord.hasWithdrawn;

        require(!hasWithdrawn, "Individual has already withdrawn");

        uint256 currentTimeStamp = now;

        require(
            currentTimeStamp >= lockPeriod,
            "Funds are still locked, wait until lock period expires"
        );
    }

    function _getDivisor() internal returns (uint256) {
        (
            uint256 minimumDivisor,
            uint256 maximumDivisor,
            uint256 exactDivisor,
            bool appliesDivisor,
            RuleDefinition ruleDefinitionDivisor
        ) = savingsConfig.getRuleSet(XEND_FINANCE_COMMISION_DIVISOR);

        require(appliesDivisor, "unsupported rule defintion for rule set");

        require(
            ruleDefinitionDivisor == RuleDefinition.VALUE,
            "unsupported rule defintion for penalty percentage rule set"
        );
        return exactDivisor;
    }

    function _getDividend() internal returns (uint256) {
        (
            uint256 minimumDividend,
            uint256 maximumDividend,
            uint256 exactDividend,
            bool appliesDividend,
            RuleDefinition ruleDefinitionDividend
        ) = savingsConfig.getRuleSet(XEND_FINANCE_COMMISION_DIVIDEND);

        require(appliesDividend, "unsupported rule defintion for rule set");

        require(
            ruleDefinitionDividend == RuleDefinition.VALUE,
            "unsupported rule defintion for penalty percentage rule set"
        );
        return exactDividend;
    }

    function deposit() external onlyNonDeprecatedCalls {
        _deposit(msg.sender);
    }

    function depositDelegate(address payable depositorAddress)
        external
        onlyNonDeprecatedCalls
        onlyOwner
    {
        _deposit(depositorAddress);
    }

    function _getFixedDepositRecordById(uint256 recordId)
        internal
        returns (FixedDepositRecord memory)
    {
        (
            uint256 recordId,
            address payable depositorId,
            uint256 amount,
            uint256 depositDateInSeconds,
            uint256 lockPeriodInSeconds,
            bool hasWithdrawn
        ) = clientRecordStorage.GetRecordById(recordId);
    }

    function FixedDeposit(
        uint256 depositDateInSeconds,
        uint256 lockPeriodInSeconds
    ) external onlyNonDeprecatedCalls {
        address payable depositorAddress = msg.sender;

        address recipient = address(this);

        uint256 amountTransferrable =
            daiToken.allowance(depositorAddress, recipient);

            require(lockPeriodInSeconds >= minLockPeriod, "Minimum lock period must be 3 months");

        require(
            amountTransferrable > 0,
            "Approve an amount > 0 for token before proceeding"
        );
        bool isSuccessful =
            daiToken.transferFrom(
                depositorAddress,
                recipient,
                amountTransferrable
            );
        require(
            isSuccessful,
            "Could not complete deposit process from token contract"
        );

        LendingAdapterAddress = lendingService.GetDaiLendingAdapterAddress();

        daiToken.approve(LendingAdapterAddress, amountTransferrable);

        uint256 balanceBeforeDeposit = lendingService.userShares();

        lendingService.save(amountTransferrable);

        uint256 balanceAfterDeposit = lendingService.userShares();

        uint256 amountOfyDai = balanceAfterDeposit.sub(balanceBeforeDeposit);

       uint recordId = clientRecordStorage.CreateDepositRecordMapping(
            amountTransferrable,
            lockPeriodInSeconds,
            depositDateInSeconds,
            depositorAddress,
            false
        );


        clientRecordStorage
            .CreateDepositorToDepositRecordIndexToRecordIDMapping(
            depositorAddress,
            recordId
        );

        clientRecordStorage.CreateDepositorAddressToDepositRecordMapping(
            depositorAddress,
            recordId,
            amountTransferrable,
            lockPeriodInSeconds,
            depositDateInSeconds,
            false
        );

        emit UnderlyingAssetDeposited(
            depositorAddress,
            amountTransferrable,
            amountOfyDai,
            amountTransferrable
        );
    }

    function _deposit(address payable depositorAddress) internal {
        address recipient = address(this);
        uint256 amountTransferrable =
            daiToken.allowance(depositorAddress, recipient);

        require(
            amountTransferrable > 0,
            "Approve an amount > 0 for token before proceeding"
        );
        bool isSuccessful =
            daiToken.transferFrom(
                depositorAddress,
                recipient,
                amountTransferrable
            );
        require(
            isSuccessful,
            "Could not complete deposit process from token contract"
        );

        LendingAdapterAddress = lendingService.GetDaiLendingAdapterAddress();

        daiToken.approve(LendingAdapterAddress, amountTransferrable);

        uint256 balanceBeforeDeposit = lendingService.userShares();

        lendingService.save(amountTransferrable);

        uint256 balanceAfterDeposit = lendingService.userShares();

        uint256 amountOfyDai = balanceAfterDeposit.sub(balanceBeforeDeposit);
        ClientRecord memory clientRecord =
            _updateClientRecordAfterDeposit(
                depositorAddress,
                amountTransferrable,
                amountOfyDai
            );

        bool exists =
            clientRecordStorage.doesClientRecordExist(depositorAddress);

        if (exists) _updateClientRecord(clientRecord);
        else {
            clientRecordStorage.createClientRecord(
                clientRecord._address,
                clientRecord.underlyingTotalDeposits,
                clientRecord.underlyingTotalWithdrawn,
                clientRecord.derivativeBalance,
                clientRecord.derivativeTotalDeposits,
                clientRecord.derivativeTotalWithdrawn
            );
        }

        emit UnderlyingAssetDeposited(
            depositorAddress,
            amountTransferrable,
            amountOfyDai,
            clientRecord.derivativeBalance
        );
    }

    function _updateClientRecordAfterDeposit(
        address payable client,
        uint256 underlyingAmountDeposited,
        uint256 derivativeAmountDeposited
    ) internal returns (ClientRecord memory) {
        bool exists = clientRecordStorage.doesClientRecordExist(client);
        if (!exists) {
            ClientRecord memory record =
                ClientRecord(
                    true,
                    client,
                    underlyingAmountDeposited,
                    0,
                    derivativeAmountDeposited,
                    derivativeAmountDeposited,
                    0
                );

            return record;
        } else {
            ClientRecord memory record = _getClientRecordByAddress(client);

            record.underlyingTotalDeposits = record.underlyingTotalDeposits.add(
                underlyingAmountDeposited
            );
            record.derivativeTotalDeposits = record.derivativeTotalDeposits.add(
                derivativeAmountDeposited
            );
            record.derivativeBalance = record.derivativeBalance.add(
                derivativeAmountDeposited
            );

            return record;
        }
    }

    function _updateClientRecordAfterWithdrawal(
        address payable client,
        uint256 underlyingAmountWithdrawn,
        uint256 derivativeAmountWithdrawn
    ) internal returns (ClientRecord memory) {
        ClientRecord memory record = _getClientRecordByAddress(client);

        record.underlyingTotalWithdrawn = record.underlyingTotalWithdrawn.add(
            underlyingAmountWithdrawn
        );

        record.derivativeTotalWithdrawn = record.derivativeTotalWithdrawn.add(
            derivativeAmountWithdrawn
        );

        record.derivativeBalance = record.derivativeBalance.sub(
            derivativeAmountWithdrawn
        );

        return record;
    }

    function _updateClientRecord(ClientRecord memory clientRecord) internal {
        clientRecordStorage.updateClientRecord(
            clientRecord._address,
            clientRecord.underlyingTotalDeposits,
            clientRecord.underlyingTotalWithdrawn,
            clientRecord.derivativeBalance,
            clientRecord.derivativeTotalDeposits,
            clientRecord.derivativeTotalWithdrawn
        );
    }

    function _emitXendTokenReward(address payable member, uint256 amount)
        internal
    {
        emit XendTokenReward(now, member, amount);
    }

    function _rewardUserWithTokens(
        uint256 totalLockPeriod,
        uint256 amountDeposited,
        address payable recipient
    ) internal {
        uint256 numberOfRewardTokens =
            rewardConfig.CalculateIndividualSavingsReward(
                totalLockPeriod,
                amountDeposited
            );

        if (numberOfRewardTokens > 0) {
            xendToken.mint(recipient, numberOfRewardTokens);
            _UpdateMemberToXendTokeRewardMapping(
                recipient,
                numberOfRewardTokens
            );
             //  increase the total number of xend token rewards distributed
            _totalTokenReward = _totalTokenReward.add(numberOfRewardTokens);
            _emitXendTokenReward(recipient, numberOfRewardTokens);
        }
    }

    modifier onlyNonDeprecatedCalls() {
        require(!isDeprecated, "Service contract has been deprecated");
        _;
    }
}

{
  "compilationTarget": {
    "browser/XendFinanceIndividual_Yearn_V1.sol": "XendFinanceIndividual_Yearn_V1"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}