// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.6;

interface IController {
    function repayFYDai(bytes32 collateral, uint256 maturity, address from, address to, uint256 fyDaiAmount) external returns (uint256);
    function debtFYDai(bytes32, uint256, address) external view returns (uint256);
}

contract RepayOneWei {
    IController constant public controller = IController(0xB94199866Fe06B535d019C11247D3f921460b91A);
    bytes32 constant public collateral = "ETH-A";
    uint256 constant public amount = 1;

    function hasDebt(address vault) external view returns (uint256[6] memory debts) {
        uint32[6] memory maturities = [1604188799, 1609459199, 1617235199, 1625097599, 1633046399, 1640995199];
        for (uint256 i; i < maturities.length; i++) {
            debts[i] = controller.debtFYDai(collateral, maturities[i], vault);
        }
    }

    /// @dev Repay all maturities with one wei debt
    function repay(address vault) external
    {
        uint32[6] memory maturities = [1604188799, 1609459199, 1617235199, 1625097599, 1633046399, 1640995199];
        for (uint256 i; i < maturities.length; i++) {
            if (controller.debtFYDai(collateral, maturities[i], vault) == amount)
                controller.repayFYDai(collateral, maturities[i], address(this), vault, amount);
        }
    }
}

{
  "compilationTarget": {
    "RepayOneWei.sol": "RepayOneWei"
  },
  "evmVersion": "berlin",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "remappings": []
}