pragma solidity 0.8.16;

import "../interfaces/KeeperCompatibleInterface.sol";
import "../KeeperBase.sol";

contract KeeperConsumer is KeeperCompatibleInterface, KeeperBase {
  uint public counter;
  uint public immutable interval;
  uint public lastTimeStamp;

  constructor(uint updateInterval) public {
    interval = updateInterval;
    lastTimeStamp = block.timestamp;
    counter = 0;
  }

  function checkUpkeep(
    bytes calldata checkData
  ) external view override cannotExecute returns (bool upkeepNeeded, bytes memory performData) {
    return (true, checkData);
  }

  function performUpkeep(bytes calldata performData) external override {
    counter = counter + 1;
  }
}