pragma solidity ^0.5.8;

interface ComptrollerInterface {
    /**
     * @notice Marker function used for light validation when updating the comptroller of a market
     * @dev Implementations should simply return true.
     * @return true
     */
    function isComptroller() external view returns (bool);

    /*** Assets You Are In ***/

    function enterMarkets(address[] calldata cTokens) external returns (uint256[] memory);
    function exitMarket(address cToken) external returns (uint256);

    /*** Policy Hooks ***/

    function mintAllowed(address cToken, address minter, uint256 mintAmount) external returns (uint256);
    function mintVerify(address cToken, address minter, uint256 mintAmount, uint256 mintTokens) external;

    function redeemAllowed(address cToken, address redeemer, uint256 redeemTokens) external returns (uint256);
    function redeemVerify(address cToken, address redeemer, uint256 redeemAmount, uint256 redeemTokens) external;

    function borrowAllowed(address cToken, address borrower, uint256 borrowAmount) external returns (uint256);
    function borrowVerify(address cToken, address borrower, uint256 borrowAmount) external;

    function repayBorrowAllowed(address cToken, address payer, address borrower, uint256 repayAmount)
        external
        returns (uint256);
    function repayBorrowVerify(
        address cToken,
        address payer,
        address borrower,
        uint256 repayAmount,
        uint256 borrowerIndex
    ) external;

    function liquidateBorrowAllowed(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint256 repayAmount
    ) external returns (uint256);
    function liquidateBorrowVerify(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint256 repayAmount,
        uint256 seizeTokens
    ) external;

    function seizeAllowed(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external returns (uint256);
    function seizeVerify(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external;

    function transferAllowed(address cToken, address src, address dst, uint256 transferTokens)
        external
        returns (uint256);
    function transferVerify(address cToken, address src, address dst, uint256 transferTokens) external;

    /*** Liquidity/Liquidation Calculations ***/

    function liquidateCalculateSeizeTokens(address cTokenBorrowed, address cTokenCollateral, uint256 repayAmount)
        external
        view
        returns (uint256, uint256);
}