// Contract: DssSpell
// Target function: function execute() external
// Copyright (C) 2020 Maker Ecosystem Growth Holdings, INC.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

pragma solidity 0.5.12;

interface DSPauseAbstract {
    function setOwner(address) external;
    function setAuthority(address) external;
    function setDelay(uint256) external;
    function plans(bytes32) external view returns (bool);
    function proxy() external view returns (address);
    function delay() external view returns (uint256);
    function plot(address, bytes32, bytes calldata, uint256) external;
    function drop(address, bytes32, bytes calldata, uint256) external;
    function exec(address, bytes32, bytes calldata, uint256) external returns (bytes memory);
}

interface VatAbstract {
    function wards(address) external view returns (uint256);
    function rely(address) external;
    function deny(address) external;
    function can(address, address) external view returns (uint256);
    function hope(address) external;
    function nope(address) external;
    function ilks(bytes32) external view returns (uint256, uint256, uint256, uint256, uint256);
    function urns(bytes32, address) external view returns (uint256, uint256);
    function gem(bytes32, address) external view returns (uint256);
    function dai(address) external view returns (uint256);
    function sin(address) external view returns (uint256);
    function debt() external view returns (uint256);
    function vice() external view returns (uint256);
    function Line() external view returns (uint256);
    function live() external view returns (uint256);
    function init(bytes32) external;
    function file(bytes32, uint256) external;
    function file(bytes32, bytes32, uint256) external;
    function cage() external;
    function slip(bytes32, address, int256) external;
    function flux(bytes32, address, address, uint256) external;
    function move(address, address, uint256) external;
    function frob(bytes32, address, address, address, int256, int256) external;
    function fork(bytes32, address, address, int256, int256) external;
    function grab(bytes32, address, address, address, int256, int256) external;
    function heal(uint256) external;
    function suck(address, address, uint256) external;
    function fold(bytes32, address, int256) external;
}

contract SpellAction {
    // MAINNET ADDRESSES
    //
    // The contracts in this list should correspond to MCD core contracts, verify
    //  against the current release list at:
    //     https://changelog.makerdao.com/releases/mainnet/1.1.3/contracts.json

    address constant MCD_VAT = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;

    // Decimals & precision
    uint256 constant THOUSAND = 10 ** 3;
    uint256 constant MILLION  = 10 ** 6;
    uint256 constant WAD      = 10 ** 18;
    uint256 constant RAY      = 10 ** 27;
    uint256 constant RAD      = 10 ** 45;