// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {GatewayRequest} from './GatewayRequest.sol';

error CommitTooOld(uint256 latest, uint256 got, uint256 window);
error CommitTooNew(uint256 latest, uint256 got);

interface IGatewayVerifier {
    function getLatestContext() external view returns (bytes memory);
    function gatewayURLs() external view returns (string[] memory);

    function getStorageValues(
        bytes memory context,
        GatewayRequest memory req,
        bytes memory proof
    ) external view returns (bytes[] memory values, uint8 exitCode);
}