// SPDX-License-Identifier:  AGPL-3.0-or-later // hevm: flattened sources of contracts/DebtLocker.sol
pragma solidity =0.6.11 >=0.6.0 <0.8.0 >=0.6.2 <0.8.0;

////// contracts/token/interfaces/IBaseFDT.sol
/* pragma solidity 0.6.11; */

interface IBaseFDT {

    /**
        @dev    Returns the total amount of funds a given address is able to withdraw currently.
        @param  owner Address of FDT holder.
        @return A uint256 representing the available funds for a given account.
    */
    function withdrawableFundsOf(address owner) external view returns (uint256);

    /**
        @dev Withdraws all available funds for a FDT holder.
    */
    function withdrawFunds() external;

    /**
        @dev   This event emits when new funds are distributed.
        @param by               The address of the sender that distributed funds.
        @param fundsDistributed The amount of funds received for distribution.
    */
    event FundsDistributed(address indexed by, uint256 fundsDistributed);

    /**
        @dev   This event emits when distributed funds are withdrawn by a token holder.
        @param by             The address of the receiver of funds.
        @param fundsWithdrawn The amount of funds that were withdrawn.
        @param totalWithdrawn The total amount of funds that were withdrawn.
    */
    event FundsWithdrawn(address indexed by, uint256 fundsWithdrawn, uint256 totalWithdrawn);

}

////// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
/* pragma solidity >=0.6.0 <0.8.0; */

/**
 * @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);
}

////// contracts/token/interfaces/IBasicFDT.sol
/* pragma solidity 0.6.11; */

/* import "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; */

/* import "./IBaseFDT.sol"; */

interface IBasicFDT is IBaseFDT, IERC20 {

    event PointsPerShareUpdated(uint256);

    event PointsCorrectionUpdated(address indexed, int256);

    function withdrawnFundsOf(address) external view returns (uint256);

    function accumulativeFundsOf(address) external view returns (uint256);

    function updateFundsReceived() external;

}

////// contracts/token/interfaces/ILoanFDT.sol
/* pragma solidity 0.6.11; */

/* import "./IBasicFDT.sol"; */

interface ILoanFDT is IBasicFDT {

    function fundsToken() external view returns (address);

    function fundsTokenBalance() external view returns (uint256);

}

////// contracts/interfaces/ILoan.sol
/* pragma solidity 0.6.11; */

/* import "../token/interfaces/ILoanFDT.sol"; */

interface ILoan is ILoanFDT {
    
    // State Variables
    function liquidityAsset() external view returns (address);
    
    function collateralAsset() external view returns (address);
    
    function fundingLocker() external view returns (address);
    
    function flFactory() external view returns (address);
    
    function collateralLocker() external view returns (address);
    
    function clFactory() external view returns (address);
    
    function borrower() external view returns (address);
    
    function repaymentCalc() external view returns (address);
    
    function lateFeeCalc() external view returns (address);
    
    function premiumCalc() external view returns (address);
    
    function loanState() external view returns (uint256);
    
    function collateralRequiredForDrawdown(uint256) external view returns (uint256);
    

    // Loan Specifications
    function apr() external view returns (uint256);
    
    function paymentsRemaining() external view returns (uint256);
    
    function paymentIntervalSeconds() external view returns (uint256);
    
    function requestAmount() external view returns (uint256);
    
    function collateralRatio() external view returns (uint256);
    
    function fundingPeriod() external view returns (uint256);

    function defaultGracePeriod() external view returns (uint256);
    
    function createdAt() external view returns (uint256);
    
    function principalOwed() external view returns (uint256);
    
    function principalPaid() external view returns (uint256);
    
    function interestPaid() external view returns (uint256);
    
    function feePaid() external view returns (uint256);
    
    function excessReturned() external view returns (uint256);
    
    function getNextPayment() external view returns (uint256, uint256, uint256, uint256);
    
    function superFactory() external view returns (address);
    
    function termDays() external view returns (uint256);
    
    function nextPaymentDue() external view returns (uint256);

    function getFullPayment() external view returns (uint256, uint256, uint256);
    

    // Liquidations
    function amountLiquidated() external view returns (uint256);

    function defaultSuffered() external view returns (uint256);
    
    function amountRecovered() external view returns (uint256);
    
    function getExpectedAmountRecovered() external view returns (uint256);

    function liquidationExcess() external view returns (uint256);
    

    // Functions
    function fundLoan(address, uint256) external;
    
    function makePayment() external;
    
    function drawdown(uint256) external;
    
    function makeFullPayment() external;
    
    function triggerDefault() external;
    
    function unwind() external;
    

    // Security 
    function pause() external;

    function unpause() external;

    function loanAdmins(address) external view returns (address);

    function setLoanAdmin(address, bool) external;


    // Misc
    function reclaimERC20(address) external;

}

////// lib/openzeppelin-contracts/contracts/math/SafeMath.sol
/* pragma solidity >=0.6.0 <0.8.0; */

/**
 * @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;
    }
}

////// lib/openzeppelin-contracts/contracts/utils/Address.sol
/* pragma solidity >=0.6.2 <0.8.0; */

/**
 * @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);
    }

    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);
            }
        }
    }
}

////// lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol
/* pragma solidity >=0.6.0 <0.8.0; */

/* import "./IERC20.sol"; */
/* import "../../math/SafeMath.sol"; */
/* import "../../utils/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");
        }
    }
}

////// contracts/DebtLocker.sol
/* pragma solidity 0.6.11; */

/* import "lib/openzeppelin-contracts/contracts/math/SafeMath.sol"; */
/* import "lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol"; */

/* import "./interfaces/ILoan.sol"; */

/// @title DebtLocker holds custody of LoanFDT tokens.
contract DebtLocker {

    using SafeMath  for uint256;
    using SafeERC20 for IERC20;

    uint256 constant WAD = 10 ** 18;

    ILoan   public immutable loan;            // The Loan contract this locker is holding tokens for.
    IERC20  public immutable liquidityAsset;  // The Liquidity Asset this locker can claim.
    address public immutable pool;            // The owner of this Locker (the Pool).

    uint256 public lastPrincipalPaid;    // Loan total principal   paid at last time claim() was called.
    uint256 public lastInterestPaid;     // Loan total interest    paid at last time claim() was called.
    uint256 public lastFeePaid;          // Loan total fees        paid at last time claim() was called.
    uint256 public lastExcessReturned;   // Loan total excess  returned at last time claim() was called.
    uint256 public lastDefaultSuffered;  // Loan total default suffered at last time claim() was called.
    uint256 public lastAmountRecovered;  // Liquidity Asset (a.k.a. loan asset) recovered from liquidation of Loan collateral.

    /**
        @dev Checks that `msg.sender` is the Pool.
    */
    modifier isPool() {
        require(msg.sender == pool, "DL:NOT_P");
        _;
    }

    constructor(address _loan, address _pool) public {
        loan           = ILoan(_loan);
        pool           = _pool;
        liquidityAsset = IERC20(ILoan(_loan).liquidityAsset());
    }

    // Note: If newAmt > 0, totalNewAmt will always be greater than zero.
    function _calcAllotment(uint256 newAmt, uint256 totalClaim, uint256 totalNewAmt) internal pure returns (uint256) {
        return newAmt == uint256(0) ? uint256(0) : newAmt.mul(totalClaim).div(totalNewAmt);
    }

    /**
        @dev    Claims funds distribution for Loan via LoanFDT. Only the Pool can call this function.
        @return [0] = Total Claimed
                [1] = Interest Claimed
                [2] = Principal Claimed
                [3] = Pool Delegate Fee Claimed
                [4] = Excess Returned Claimed
                [5] = Amount Recovered (from Liquidation)
                [6] = Default Suffered
    */
    function claim() external isPool returns (uint256[7] memory) {

        uint256 newDefaultSuffered   = uint256(0);
        uint256 loan_defaultSuffered = loan.defaultSuffered();

        // If a default has occurred, update storage variable and update memory variable from zero for return.
        // `newDefaultSuffered` represents the proportional loss that the DebtLocker registers based on its balance
        // of LoanFDTs in comparison to the total supply of LoanFDTs.
        // Default will occur only once, so below statement will only be `true` once.
        if (lastDefaultSuffered == uint256(0) && loan_defaultSuffered > uint256(0)) {
            newDefaultSuffered = lastDefaultSuffered = _calcAllotment(loan.balanceOf(address(this)), loan_defaultSuffered, loan.totalSupply());
        }

        // Account for any transfers into Loan that have occurred since last call.
        loan.updateFundsReceived();

        // Handles case where no claimable funds are present but a default must be registered (zero-collateralized loans defaulting).
        if (loan.withdrawableFundsOf(address(this)) == uint256(0)) return([0, 0, 0, 0, 0, 0, newDefaultSuffered]);

        // If there are claimable funds, calculate portions and claim using LoanFDT.
        
        // Calculate payment deltas.
        uint256 newInterest  = loan.interestPaid() - lastInterestPaid;    // `loan.interestPaid`  updated in `loan._makePayment()`
        uint256 newPrincipal = loan.principalPaid() - lastPrincipalPaid;  // `loan.principalPaid` updated in `loan._makePayment()`

        // Update storage variables for next delta calculation.
        lastInterestPaid  = loan.interestPaid();
        lastPrincipalPaid = loan.principalPaid();

        // Calculate one-time deltas if storage variables have not yet been updated.
        uint256 newFee             = lastFeePaid         == uint256(0) ? loan.feePaid()         : uint256(0);  // `loan.feePaid`          updated in `loan.drawdown()`
        uint256 newExcess          = lastExcessReturned  == uint256(0) ? loan.excessReturned()  : uint256(0);  // `loan.excessReturned`   updated in `loan.unwind()` OR `loan.drawdown()` if `amt < fundingLockerBal`
        uint256 newAmountRecovered = lastAmountRecovered == uint256(0) ? loan.amountRecovered() : uint256(0);  // `loan.amountRecovered`  updated in `loan.triggerDefault()`

        // Update DebtLocker storage variables if Loan storage variables has been updated since last claim.
        if (newFee > 0)             lastFeePaid         = newFee;
        if (newExcess > 0)          lastExcessReturned  = newExcess;
        if (newAmountRecovered > 0) lastAmountRecovered = newAmountRecovered;

        // Withdraw all claimable funds via LoanFDT.
        uint256 beforeBal = liquidityAsset.balanceOf(address(this));                 // Current balance of DebtLocker (accounts for direct inflows).
        loan.withdrawFunds();                                                        // Transfer funds from Loan to DebtLocker.
        uint256 claimBal  = liquidityAsset.balanceOf(address(this)).sub(beforeBal);  // Amount claimed from Loan using LoanFDT.

        // Calculate sum of all deltas, to be used to calculate portions for metadata.
        uint256 sum = newInterest.add(newPrincipal).add(newFee).add(newExcess).add(newAmountRecovered);

        // Calculate payment portions based on LoanFDT claim.
        newInterest  = _calcAllotment(newInterest,  claimBal, sum);
        newPrincipal = _calcAllotment(newPrincipal, claimBal, sum);

        // Calculate one-time portions based on LoanFDT claim.
        newFee             = _calcAllotment(newFee,             claimBal, sum);
        newExcess          = _calcAllotment(newExcess,          claimBal, sum);
        newAmountRecovered = _calcAllotment(newAmountRecovered, claimBal, sum);

        liquidityAsset.safeTransfer(pool, claimBal);  // Transfer entire amount claimed using LoanFDT.

        // Return claim amount plus all relevant metadata, to be used by Pool for further claim logic.
        // Note: newInterest + newPrincipal + newFee + newExcess + newAmountRecovered = claimBal - dust
        //       The dust on the right side of the equation gathers in the pool after transfers are made.
        return([claimBal, newInterest, newPrincipal, newFee, newExcess, newAmountRecovered, newDefaultSuffered]);
    }

    /**
        @dev Liquidates a Loan that is held by this contract. Only the Pool can call this function.
    */
    function triggerDefault() external isPool {
        loan.triggerDefault();
    }

}

{"success": true, "error": null, "results": {"detectors": [{"check": "incorrect-equality", "impact": "Medium", "confidence": "High"}]}}