/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

const { SearchEngineSelector } = ChromeUtils.import(
  "resource://gre/modules/SearchEngineSelector.jsm"
);
const { MockRegistrar } = ChromeUtils.import(
  "resource://testing-common/MockRegistrar.jsm"
);

const SEARCH_SERVICE_TOPIC = "browser-search-service";
const SEARCH_ENGINE_TOPIC = "browser-search-engine-modified";

const CONFIG = [
  {
    // Engine initially default, but the defaults will be changed to engine-pref.
    webExtension: {
      id: "engine@search.mozilla.org",
    },
    appliesTo: [
      {
        included: { everywhere: true },
        default: "yes",
        defaultPrivate: "yes",
      },
      {
        included: { regions: ["FR"] },
        default: "no",
        defaultPrivate: "no",
      },
    ],
  },
  {
    // This will become defaults when region is changed to FR.
    webExtension: {
      id: "engine-pref@search.mozilla.org",
    },
    appliesTo: [
      {
        included: { everywhere: true },
      },
      {
        included: { regions: ["FR"] },
        default: "yes",
        defaultPrivate: "yes",
      },
    ],
  },
  {
    // This engine will get an update when region is changed to FR.
    webExtension: {
      id: "engine-chromeicon@search.mozilla.org",
    },
    appliesTo: [
      {
        included: { everywhere: true },
      },
      {
        included: { regions: ["FR"] },
        extraParams: [
          { name: "c", value: "my-test" },
          { name: "q1", value: "{searchTerms}" },
        ],
      },
    ],
  },
  {
    // This engine will be removed when the region is changed to FR.
    webExtension: {
      id: "engine-rel-searchform-purpose@search.mozilla.org",
    },
    appliesTo: [
      {
        included: { everywhere: true },
        excluded: { regions: ["FR"] },
      },
    ],
  },
  {
    // This engine will be added when the region is changed to FR.
    webExtension: {
      id: "engine-reordered@search.mozilla.org",
    },
    appliesTo: [
      {
        included: { regions: ["FR"] },
      },
    ],
  },
  {
    // This engine will be re-ordered and have a changed name, when moved to FR.
    webExtension: {
      id: "engine-resourceicon@search.mozilla.org",
    },
    appliesTo: [
      {
        included: { everywhere: true },
        excluded: { regions: ["FR"] },
      },
      {
        included: { regions: ["FR"] },
        webExtension: {
          locales: ["gd"],
        },
        orderHint: 30,
      },
    ],
  },
  {
    // This engine has the same name, but still should be replaced correctly.
    webExtension: {
      id: "engine-same-name@search.mozilla.org",
    },
    appliesTo: [
      {
        included: { everywhere: true },
        excluded: { regions: ["FR"] },
      },
      {
        included: { regions: ["FR"] },
        webExtension: {
          locales: ["gd"],
        },
      },
    ],
  },
];

function listenFor(name, key) {
  let notifyObserved = false;
  let obs = (subject, topic, data) => {
    if (data == key) {
      notifyObserved = true;
    }
  };
  Services.obs.addObserver(obs, name);

  return () => {
    Services.obs.removeObserver(obs, name);
    return notifyObserved;
  };
}

add_task(async function setup() {
  Services.prefs.setBoolPref("browser.search.separatePrivateDefault", true);
  Services.prefs.setBoolPref(
    SearchUtils.BROWSER_SEARCH_PREF + "separatePrivateDefault.ui.enabled",
    true
  );

  SearchTestUtils.useMockIdleService();
  await SearchTestUtils.useTestEngines("data", null, CONFIG);
  await AddonTestUtils.promiseStartupManager();
});

// This is to verify that the loaded configuration matches what we expect for
// the test.
add_task(async function test_initial_config_correct() {
  Region._setHomeRegion("", false);

  await Services.search.init();

  const installedEngines = await Services.search.getDefaultEngines();
  Assert.deepEqual(
    installedEngines.map(e => e.identifier),
    [
      "engine",
      "engine-chromeicon",
      "engine-pref",
      "engine-rel-searchform-purpose",
      "engine-resourceicon",
      "engine-same-name",
    ],
    "Should have the correct list of engines installed."
  );

  Assert.equal(
    (await Services.search.getDefault()).identifier,
    "engine",
    "Should have loaded the expected default engine"
  );

  Assert.equal(
    (await Services.search.getDefaultPrivate()).identifier,
    "engine",
    "Should have loaded the expected private default engine"
  );
});

add_task(async function test_config_updated_engine_changes() {
  // Update the config.
  const reloadObserved = SearchTestUtils.promiseSearchNotification(
    "engines-reloaded"
  );
  const defaultEngineChanged = SearchTestUtils.promiseSearchNotification(
    SearchUtils.MODIFIED_TYPE.DEFAULT,
    SearchUtils.TOPIC_ENGINE_MODIFIED
  );
  const defaultPrivateEngineChanged = SearchTestUtils.promiseSearchNotification(
    SearchUtils.MODIFIED_TYPE.DEFAULT_PRIVATE,
    SearchUtils.TOPIC_ENGINE_MODIFIED
  );

  const enginesAdded = [];
  const enginesModified = [];
  const enginesRemoved = [];

  function enginesObs(subject, topic, data) {
    if (data == SearchUtils.MODIFIED_TYPE.ADDED) {
      enginesAdded.push(subject.QueryInterface(Ci.nsISearchEngine).identifier);
    } else if (data == SearchUtils.MODIFIED_TYPE.CHANGED) {
      enginesModified.push(
        subject.QueryInterface(Ci.nsISearchEngine).identifier
      );
    } else if (data == SearchUtils.MODIFIED_TYPE.REMOVED) {
      enginesRemoved.push(subject.QueryInterface(Ci.nsISearchEngine).name);
    }
  }
  Services.obs.addObserver(enginesObs, SearchUtils.TOPIC_ENGINE_MODIFIED);

  Region._setHomeRegion("FR", false);

  await Services.search.wrappedJSObject._maybeReloadEngines();

  await reloadObserved;
  Services.obs.removeObserver(enginesObs, SearchUtils.TOPIC_ENGINE_MODIFIED);

  Assert.deepEqual(
    enginesAdded,
    ["engine-resourceicon-gd", "engine-reordered"],
    "Should have added the correct engines"
  );

  Assert.deepEqual(
    enginesModified.sort(),
    ["engine", "engine-chromeicon", "engine-pref", "engine-same-name-gd"],
    "Should have modified the expected engines"
  );

  Assert.deepEqual(
    enginesRemoved,
    ["engine-rel-searchform-purpose", "engine-resourceicon"],
    "Should have removed the expected engine"
  );

  const installedEngines = await Services.search.getDefaultEngines();

  Assert.deepEqual(
    installedEngines.map(e => e.identifier),
    [
      "engine-pref",
      "engine-resourceicon-gd",
      "engine-chromeicon",
      "engine-same-name-gd",
      "engine",
      "engine-reordered",
    ],
    "Should have the correct list of engines installed in the expected order."
  );

  const newDefault = await defaultEngineChanged;
  Assert.equal(
    newDefault.QueryInterface(Ci.nsISearchEngine).name,
    "engine-pref",
    "Should have correctly notified the new default engine"
  );

  const newDefaultPrivate = await defaultPrivateEngineChanged;
  Assert.equal(
    newDefaultPrivate.QueryInterface(Ci.nsISearchEngine).name,
    "engine-pref",
    "Should have correctly notified the new default private engine"
  );

  const engineWithParams = await Services.search.getEngineByName(
    "engine-chromeicon"
  );
  Assert.equal(
    engineWithParams.getSubmission("test").uri.spec,
    "https://www.google.com/search?c=my-test&q1=test",
    "Should have updated the parameters"
  );

  const engineWithSameName = await Services.search.getEngineByName(
    "engine-same-name"
  );
  Assert.equal(
    engineWithSameName.getSubmission("test").uri.spec,
    "https://www.example.com/search?q=test",
    "Should have correctly switched to the engine of the same name"
  );

  Assert.equal(
    Services.search.wrappedJSObject._settings.getAttribute("useSavedOrder"),
    false,
    "Should not have set the useSavedOrder preference"
  );
});
