Cu.import("resource://gre/modules/FormHistory.jsm");
Cu.import("resource://gre/modules/Log.jsm");
Cu.import("resource://services-sync/service.js");
Cu.import("resource://services-sync/engines/bookmarks.js");
Cu.import("resource://services-sync/engines/history.js");
Cu.import("resource://services-sync/engines/forms.js");
Cu.import("resource://services-sync/engines/passwords.js");
Cu.import("resource://services-sync/engines/prefs.js");
Cu.import("resource://testing-common/services/sync/utils.js");

const LoginInfo = Components.Constructor(
  "@mozilla.org/login-manager/loginInfo;1", Ci.nsILoginInfo, "init");

/**
 * We don't test the clients or tabs engines because neither has conflict
 * resolution logic. The clients engine syncs twice per global sync, and
 * custom conflict resolution logic for commands that doesn't use
 * timestamps. Tabs doesn't have conflict resolution at all, since it's
 * read-only.
 */

Log.repository.getLogger("Sqlite").level = Log.Level.Error;

async function assertChildGuids(folderGuid, expectedChildGuids, message) {
  let tree = await PlacesUtils.promiseBookmarksTree(folderGuid);
  let childGuids = tree.children.map(child => child.guid);
  deepEqual(childGuids, expectedChildGuids, message);
}

async function cleanup(engine, server) {
  Svc.Obs.notify("weave:engine:stop-tracking");
  await engine._store.wipe();
  Svc.Prefs.resetBranch("");
  Service.recordManager.clearCache();
  await promiseStopServer(server);
}

add_task(async function test_history_change_during_sync() {
  _("Ensure that we don't bump the score when applying history records.");

  enableValidationPrefs();

  let engine = Service.engineManager.get("history");
  let server = serverForEnginesWithKeys({"foo": "password"}, [engine]);
  await SyncTestingInfrastructure(server);
  let collection = server.user("foo").collection("history");

  // Override `applyIncomingBatch` to insert a record while we're applying
  // changes. The tracker should ignore this change.
  let { applyIncomingBatch } = engine._store;
  engine._store.applyIncomingBatch = async function(records) {
    _("Inserting local history visit");
    engine._store.applyIncomingBatch = applyIncomingBatch;
    let failed;
    try {
      await addVisit("during_sync");
    } finally {
      failed = await applyIncomingBatch.call(this, records);
    }
    return failed;
  };

  Svc.Obs.notify("weave:engine:start-tracking");

  try {
    let remoteRec = new HistoryRec("history", "UrOOuzE5QM-e");
    remoteRec.histUri = "http://getfirefox.com/";
    remoteRec.title = "Get Firefox!";
    remoteRec.visits = [{
      date: PlacesUtils.toPRTime(Date.now()),
      type: PlacesUtils.history.TRANSITION_TYPED,
    }];
    collection.insert(remoteRec.id, encryptPayload(remoteRec.cleartext));

    await sync_engine_and_validate_telem(engine, true);
    strictEqual(Service.scheduler.globalScore, 0,
      "Should not bump global score for visits added during sync");

    equal(collection.count(), 1,
      "New local visit should not exist on server after first sync");

    await sync_engine_and_validate_telem(engine, true);
    strictEqual(Service.scheduler.globalScore, 0,
      "Should not bump global score during second history sync");

    // ...But we still won't ever upload the visit to the server, since we
    // cleared the tracker after the first sync.
    equal(collection.count(), 1,
      "New local visit won't exist on server after second sync");
  } finally {
    engine._store.applyIncomingBatch = applyIncomingBatch;
    await cleanup(engine, server);
  }
});

add_task(async function test_passwords_change_during_sync() {
  _("Ensure that we don't bump the score when applying passwords.");

  enableValidationPrefs();

  let engine = Service.engineManager.get("passwords");
  let server = serverForEnginesWithKeys({"foo": "password"}, [engine]);
  await SyncTestingInfrastructure(server);
  let collection = server.user("foo").collection("passwords");

  let { applyIncomingBatch } = engine._store;
  engine._store.applyIncomingBatch = async function(records) {
    _("Inserting local password");
    engine._store.applyIncomingBatch = applyIncomingBatch;
    let failed;
    try {
      let login = new LoginInfo("https://example.com", "", null, "username",
        "password", "", "");
      Services.logins.addLogin(login);
    } finally {
      failed = await applyIncomingBatch.call(this, records);
    }
    return failed;
  };

  Svc.Obs.notify("weave:engine:start-tracking");

  try {
    let remoteRec = new LoginRec("passwords", "{765e3d6e-071d-d640-a83d-81a7eb62d3ed}");
    remoteRec.formSubmitURL = "";
    remoteRec.httpRealm = "";
    remoteRec.hostname = "https://mozilla.org";
    remoteRec.username = "username";
    remoteRec.password = "sekrit";
    remoteRec.timeCreated = Date.now();
    remoteRec.timePasswordChanged = Date.now();
    collection.insert(remoteRec.id, encryptPayload(remoteRec.cleartext));

    await sync_engine_and_validate_telem(engine, true);
    strictEqual(Service.scheduler.globalScore, 0,
      "Should not bump global score for passwords added during first sync");

    equal(collection.count(), 1,
      "New local password should not exist on server after first sync");

    await sync_engine_and_validate_telem(engine, true);
    strictEqual(Service.scheduler.globalScore, 0,
      "Should not bump global score during second passwords sync");

    // ...But we still won't ever upload the entry to the server, since we
    // cleared the tracker after the first sync.
    equal(collection.count(), 1,
      "New local password won't exist on server after second sync");
  } finally {
    engine._store.applyIncomingBatch = applyIncomingBatch;
    await cleanup(engine, server);
  }
});

add_task(async function test_prefs_change_during_sync() {
  _("Ensure that we don't bump the score when applying prefs.");

  const TEST_PREF = "services.sync.prefs.sync.test.duringSync";

  enableValidationPrefs();

  let engine = Service.engineManager.get("prefs");
  let server = serverForEnginesWithKeys({"foo": "password"}, [engine]);
  await SyncTestingInfrastructure(server);
  let collection = server.user("foo").collection("prefs");

  let { applyIncomingBatch } = engine._store;
  engine._store.applyIncomingBatch = async function(records) {
    _("Updating local pref value");
    engine._store.applyIncomingBatch = applyIncomingBatch;
    let failed;
    try {
      // Change the value of a synced pref.
      Services.prefs.setCharPref(TEST_PREF, "hello");
    } finally {
      failed = await applyIncomingBatch.call(this, records);
    }
    return failed;
  };

  Svc.Obs.notify("weave:engine:start-tracking");

  try {
    // All synced prefs are stored in a single record, so we'll only ever
    // have one record on the server. This test just checks that we don't
    // track or upload prefs changed during the sync.
    let guid = CommonUtils.encodeBase64URL(Services.appinfo.ID);
    let remoteRec = new PrefRec("prefs", guid);
    remoteRec.value = {
      [TEST_PREF]: "world",
    };
    collection.insert(remoteRec.id, encryptPayload(remoteRec.cleartext));

    await sync_engine_and_validate_telem(engine, true);
    strictEqual(Service.scheduler.globalScore, 0,
      "Should not bump global score for prefs added during first sync");
    let payloads = collection.payloads();
    equal(payloads.length, 1,
      "Should not upload multiple prefs records after first sync");
    equal(payloads[0].value[TEST_PREF], "world",
      "Should not upload pref value changed during first sync");

    await sync_engine_and_validate_telem(engine, true);
    strictEqual(Service.scheduler.globalScore, 0,
      "Should not bump global score during second prefs sync");
    payloads = collection.payloads();
    equal(payloads.length, 1,
      "Should not upload multiple prefs records after second sync");
    equal(payloads[0].value[TEST_PREF], "world",
      "Should not upload changed pref value during second sync");
  } finally {
    engine._store.applyIncomingBatch = applyIncomingBatch;
    await cleanup(engine, server);
    Services.prefs.clearUserPref(TEST_PREF);
  }
});

add_task(async function test_forms_change_during_sync() {
  _("Ensure that we don't bump the score when applying form records.");

  enableValidationPrefs();

  let engine = Service.engineManager.get("forms");
  let server = serverForEnginesWithKeys({"foo": "password"}, [engine]);
  await SyncTestingInfrastructure(server);
  let collection = server.user("foo").collection("forms");

  let { applyIncomingBatch } = engine._store;
  engine._store.applyIncomingBatch = async function(records) {
    _("Inserting local form history entry");
    engine._store.applyIncomingBatch = applyIncomingBatch;
    let failed;
    try {
      await new Promise(resolve => {
        FormHistory.update([{
          op: "add",
          fieldname: "favoriteDrink",
          value: "cocoa",
        }], {
          handleCompletion: resolve,
        });
      });
    } finally {
      failed = await applyIncomingBatch.call(this, records);
    }
    return failed;
  };

  Svc.Obs.notify("weave:engine:start-tracking");

  try {
    // Add an existing remote form history entry. We shouldn't bump the score when
    // we apply this record.
    let remoteRec = new FormRec("forms", "Tl9dHgmJSR6FkyxS");
    remoteRec.name = "name";
    remoteRec.value = "alice";
    collection.insert(remoteRec.id, encryptPayload(remoteRec.cleartext));

    await sync_engine_and_validate_telem(engine, true);
    strictEqual(Service.scheduler.globalScore, 0,
      "Should not bump global score for forms added during first sync");

    equal(collection.count(), 1,
      "New local form should not exist on server after first sync");

    await sync_engine_and_validate_telem(engine, true);
    strictEqual(Service.scheduler.globalScore, 0,
      "Should not bump global score during second forms sync");

    // ...But we still won't ever upload the entry to the server, since we
    // cleared the tracker after the first sync.
    equal(collection.count(), 1,
      "New local form won't exist on server after second sync");
  } finally {
    engine._store.applyIncomingBatch = applyIncomingBatch;
    await cleanup(engine, server);
  }
});

add_task(async function test_bookmark_change_during_sync() {
  _("Ensure that we track bookmark changes made during a sync.");

  enableValidationPrefs();

  // Already-tracked bookmarks that shouldn't be uploaded during the first sync.
  let bzBmk = await PlacesUtils.bookmarks.insert({
    parentGuid: PlacesUtils.bookmarks.menuGuid,
    url: "https://bugzilla.mozilla.org/",
    title: "Bugzilla",
  });
  _(`Bugzilla GUID: ${bzBmk.guid}`);

  await PlacesTestUtils.setBookmarkSyncFields({
    guid: bzBmk.guid,
    syncChangeCounter: 0,
    syncStatus: PlacesUtils.bookmarks.SYNC_STATUS.NORMAL,
  });

  let engine = Service.engineManager.get("bookmarks");
  let server = serverForEnginesWithKeys({"foo": "password"}, [engine]);
  await SyncTestingInfrastructure(server);
  let collection = server.user("foo").collection("bookmarks");

  let bmk3; // New child of Folder 1, created locally during sync.

  let { applyIncomingBatch } = engine._store;
  engine._store.applyIncomingBatch = async function(records) {
    _("Inserting bookmark into local store");
    engine._store.applyIncomingBatch = applyIncomingBatch;
    let failed;
    try {
      bmk3 = await PlacesUtils.bookmarks.insert({
        parentGuid: folder1.guid,
        url: "https://mozilla.org/",
        title: "Mozilla",
      });
    } finally {
      failed = await applyIncomingBatch.call(this, records);
    }
    return failed;
  };

  // New bookmarks that should be uploaded during the first sync.
  let folder1 = await PlacesUtils.bookmarks.insert({
    type: PlacesUtils.bookmarks.TYPE_FOLDER,
    parentGuid: PlacesUtils.bookmarks.toolbarGuid,
    title: "Folder 1",
  });
  _(`Folder GUID: ${folder1.guid}`);

  let tbBmk = await PlacesUtils.bookmarks.insert({
    parentGuid: folder1.guid,
    url: "http://getthunderbird.com/",
    title: "Get Thunderbird!",
  });
  _(`Thunderbird GUID: ${tbBmk.guid}`);

  Svc.Obs.notify("weave:engine:start-tracking");

  try {
    let bmk2_guid = "get-firefox1"; // New child of Folder 1, created remotely.
    let folder2_guid = "folder2-1111"; // New folder, created remotely.
    let tagQuery_guid = "tag-query111"; // New tag query child of Folder 2, created remotely.
    let bmk4_guid = "example-org1"; // New tagged child of Folder 2, created remotely.
    {
      // An existing record changed on the server that should not trigger
      // another sync when applied.
      let remoteBzBmk = new Bookmark("bookmarks", bzBmk.guid);
      remoteBzBmk.bmkUri      = "https://bugzilla.mozilla.org/";
      remoteBzBmk.description = "New description";
      remoteBzBmk.title       = "Bugzilla";
      remoteBzBmk.tags        = ["new", "tags"];
      remoteBzBmk.parentName  = "Bookmarks Toolbar";
      remoteBzBmk.parentid    = "toolbar";
      collection.insert(bzBmk.guid, encryptPayload(remoteBzBmk.cleartext));

      let remoteFolder = new BookmarkFolder("bookmarks", folder2_guid);
      remoteFolder.title      = "Folder 2";
      remoteFolder.children   = [bmk4_guid, tagQuery_guid];
      remoteFolder.parentName = "Bookmarks Menu";
      remoteFolder.parentid   = "menu";
      collection.insert(folder2_guid, encryptPayload(remoteFolder.cleartext));

      let remoteFxBmk = new Bookmark("bookmarks", bmk2_guid);
      remoteFxBmk.bmkUri        = "http://getfirefox.com/";
      remoteFxBmk.description   = "Firefox is awesome.";
      remoteFxBmk.title         = "Get Firefox!";
      remoteFxBmk.tags          = ["firefox", "awesome", "browser"];
      remoteFxBmk.keyword       = "awesome";
      remoteFxBmk.loadInSidebar = false;
      remoteFxBmk.parentName    = "Folder 1";
      remoteFxBmk.parentid      = folder1.guid;
      collection.insert(bmk2_guid, encryptPayload(remoteFxBmk.cleartext));

      // A tag query referencing a nonexistent tag folder, which we should
      // create locally when applying the record.
      let remoteTagQuery = new BookmarkQuery("bookmarks", tagQuery_guid);
      remoteTagQuery.bmkUri     = "place:type=7&folder=999";
      remoteTagQuery.title      = "Taggy tags";
      remoteTagQuery.folderName = "taggy";
      remoteTagQuery.parentName = "Folder 2";
      remoteTagQuery.parentid   = folder2_guid;
      collection.insert(tagQuery_guid,
        encryptPayload(remoteTagQuery.cleartext));

      // A bookmark that should appear in the results for the tag query.
      let remoteTaggedBmk = new Bookmark("bookmarks", bmk4_guid);
      remoteTaggedBmk.bmkUri     = "https://example.org/";
      remoteTaggedBmk.title      = "Tagged bookmark";
      remoteTaggedBmk.tags       = ["taggy"];
      remoteTaggedBmk.parentName = "Folder 2";
      remoteTaggedBmk.parentid   = folder2_guid;
      collection.insert(bmk4_guid, encryptPayload(remoteTaggedBmk.cleartext));
    }

    await assertChildGuids(folder1.guid, [tbBmk.guid],
      "Folder should have 1 child before first sync");

    let pingsPromise = wait_for_pings(2);

    let changes = await engine.pullNewChanges();
    deepEqual(Object.keys(changes).sort(), [
      folder1.guid,
      tbBmk.guid,
      "menu",
      "mobile",
      "toolbar",
      "unfiled",
    ].sort(), "Should track bookmark and folder created before first sync");

    // Unlike the tests above, we can't use `sync_engine_and_validate_telem`
    // because the bookmarks engine will automatically schedule a follow-up
    // sync for us.
    _("Perform first sync and immediate follow-up sync");
    Service.sync(["bookmarks"]);

    let pings = await pingsPromise;
    equal(pings.length, 2, "Should submit two pings");
    ok(pings.every(p => {
      assert_success_ping(p);
      return p.syncs.length == 1;
    }), "Should submit 1 sync per ping");

    strictEqual(Service.scheduler.globalScore, 0,
      "Should reset global score after follow-up sync");
    ok(bmk3, "Should insert bookmark during first sync to simulate change");
    ok(collection.wbo(bmk3.guid),
      "Changed bookmark should be uploaded after follow-up sync");

    let bmk2 = await PlacesUtils.bookmarks.fetch({
      guid: bmk2_guid,
    });
    ok(bmk2, "Remote bookmark should be applied during first sync");
    await assertChildGuids(folder1.guid, [tbBmk.guid, bmk3.guid, bmk2_guid],
      "Folder 1 should have 3 children after first sync");
    await assertChildGuids(folder2_guid, [bmk4_guid, tagQuery_guid],
      "Folder 2 should have 2 children after first sync");
    let taggedURIs = PlacesUtils.tagging.getURIsForTag("taggy");
    equal(taggedURIs.length, 1, "Should have 1 tagged URI");
    equal(taggedURIs[0].spec, "https://example.org/",
      "Synced tagged bookmark should appear in tagged URI list");

    changes = await engine.pullNewChanges();
    deepEqual(changes, {},
      "Should have already uploaded changes in follow-up sync");

    // First ping won't include validation data, since we've changed bookmarks
    // and `canValidate` will indicate it can't proceed.
    let engineData = pings.map(p =>
      p.syncs[0].engines.find(e => e.name == "bookmarks")
    );
    ok(!engineData[0].validation, "Should not validate after first sync");
    ok(engineData[1].validation, "Should validate after second sync");
  } finally {
    engine._store.applyIncomingBatch = applyIncomingBatch;
    await cleanup(engine, server);
  }
});
