// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/cupertino.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';

import 'package:e2e/e2e.dart';

import 'package:flutter_gallery/gallery/app.dart' show GalleryApp;
import 'package:flutter_gallery/gallery/demos.dart';
import 'package:flutter_gallery/demo_lists.dart';

import 'e2e_utils.dart';
import 'run_demos.dart';

const List<String> kSkippedDemos = <String>[];

// All of the gallery demos, identified as "title@category".
//
// These names are reported by the test app, see _handleMessages()
// in transitions_perf.dart.
List<String> _allDemos = kAllGalleryDemos.map(
  (GalleryDemo demo) => '${demo.title}@${demo.category.name}',
).toList();

void main([List<String> args = const <String>[]]) {
  final bool withSemantics = args.contains('--with_semantics');
  final E2EWidgetsFlutterBinding binding =
      E2EWidgetsFlutterBinding.ensureInitialized() as E2EWidgetsFlutterBinding;
  binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.fullyLive;
  group('flutter gallery transitions on e2e', () {
    testWidgets('find.bySemanticsLabel', (WidgetTester tester) async {
      runApp(const GalleryApp(testMode: true));
      await tester.pumpAndSettle();
      final int id = tester.getSemantics(find.bySemanticsLabel('Material')).id;
      expect(id, greaterThan(-1));
    }, skip: !withSemantics, semanticsEnabled: true);

    testWidgets(
      'all demos',
      (WidgetTester tester) async {
        runApp(const GalleryApp(testMode: true));
        await tester.pumpAndSettle();
        // Collect timeline data for just a limited set of demos to avoid OOMs.
        await watchPerformance(binding, () async {
          await runDemos(kProfiledDemos, tester);
        });

        // Execute the remaining tests.
        final Set<String> unprofiledDemos = Set<String>.from(_allDemos)
          ..removeAll(kProfiledDemos);
        await runDemos(unprofiledDemos.toList(), tester);
      },
      timeout: const Timeout(Duration(minutes: 5)),
      semanticsEnabled: withSemantics,
    );
  });
}