/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

export async function runBackgroundTask(commandLine) {
  let pref = commandLine.length
    ? commandLine.getArgument(0)
    : "test.backgroundtask_specific_pref.exitCode";

  // 0, 1, 2, 3 are all meaningful exit codes already.
  let exitCode = Services.prefs.getIntPref(pref, 4);

  console.error(
    `runBackgroundTask: backgroundtask_specific_pref read pref '${pref}' with value ${exitCode}`
  );

  if (commandLine.length > 1) {
    let newValue = Number.parseInt(commandLine.getArgument(1), 10);
    console.error(
      `runBackgroundTask: backgroundtask_specific_pref wrote pref '${pref}' with value ${newValue}`
    );
    Services.prefs.setIntPref(pref, newValue);
  }

  console.error(
    `runBackgroundTask: backgroundtask_specific_pref exiting with exitCode ${exitCode}`
  );

  return exitCode;
}
