// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity >=0.5.12;

// https://github.com/makerdao/dss-psm/blob/master/src/psm.sol
interface PsmAbstract {
    function wards(address) external view returns (uint256);
    function rely(address) external;
    function deny(address) external;
    function vat() external view returns (address);
    function gemJoin() external view returns (address);
    function dai() external view returns (address);
    function daiJoin() external view returns (address);
    function ilk() external view returns (bytes32);
    function vow() external view returns (address);
    function tin() external view returns (uint256);
    function tout() external view returns (uint256);
    function file(bytes32 what, uint256 data) external;
    function hope(address) external;
    function nope(address) external;
    function sellGem(address usr, uint256 gemAmt) external;
    function buyGem(address usr, uint256 gemAmt) external;
}