/* 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/. */

"use strict";

const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
const {OS} = ChromeUtils.import("resource://gre/modules/osfile.jsm");
const {Preferences} = ChromeUtils.import("resource://gre/modules/Preferences.jsm");
const {FileTestUtils} = ChromeUtils.import("resource://testing-common/FileTestUtils.jsm");

// This initializes the policy engine for xpcshell tests
let policies = Cc["@mozilla.org/enterprisepolicies;1"].getService(Ci.nsIObserver);
policies.observe(null, "policies-startup", null);

// Any changes to this function should also be made to the corresponding version
// in browser/components/enterprisepolicies/tests/browser/head.js
async function setupPolicyEngineWithJson(json, customSchema) {
  let filePath;
  if (typeof(json) == "object") {
    filePath = FileTestUtils.getTempFile("policies.json").path;

    // This file gets automatically deleted by FileTestUtils
    // at the end of the test run.
    await OS.File.writeAtomic(filePath, JSON.stringify(json), {
      encoding: "utf-8",
    });
  } else {
    filePath = do_get_file(json ? json : "non-existing-file.json").path;
  }

  Services.prefs.setStringPref("browser.policies.alternatePath", filePath);

  let promise = new Promise(resolve => {
    Services.obs.addObserver(function observer() {
      Services.obs.removeObserver(observer, "EnterprisePolicies:AllPoliciesApplied");
      resolve();
    }, "EnterprisePolicies:AllPoliciesApplied");
  });

  // Clear any previously used custom schema
  Cu.unload("resource:///modules/policies/schema.jsm");

  if (customSchema) {
    let schemaModule = ChromeUtils.import("resource:///modules/policies/schema.jsm", null);
    schemaModule.schema = customSchema;
  }

  Services.obs.notifyObservers(null, "EnterprisePolicies:Restart");
  return promise;
}

function checkLockedPref(prefName, prefValue) {
  equal(Preferences.locked(prefName), true, `Pref ${prefName} is correctly locked`);
  equal(Preferences.get(prefName), prefValue, `Pref ${prefName} has the correct value`);
}

function checkUnlockedPref(prefName, prefValue) {
  equal(Preferences.locked(prefName), false, `Pref ${prefName} is correctly unlocked`);
  equal(Preferences.get(prefName), prefValue, `Pref ${prefName} has the correct value`);
}