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

contract AutomationBase {
  error OnlySimulatedBackend();

  /**
   * @notice method that allows it to be simulated via eth_call by checking that
   * the sender is the zero address.
   */
  function _preventExecution() internal view {
    // solhint-disable-next-line avoid-tx-origin
    if (tx.origin != address(0) && tx.origin != address(0x1111111111111111111111111111111111111111)) {
      revert OnlySimulatedBackend();
    }
  }

  /**
   * @notice modifier that allows it to be simulated via eth_call by checking
   * that the sender is the zero address.
   */
  modifier cannotExecute() {
    _preventExecution();
    _;
  }
}