import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:hepan_everyday/app/app_controller.dart';
import 'package:hepan_everyday/domain/app_snapshot.dart';
import 'package:hepan_everyday/domain/school_term.dart';
import 'package:hepan_everyday/features/school/school_auth_page.dart';
import 'package:hepan_everyday/features/school/school_session.dart';
import 'package:webview_flutter_platform_interface/webview_flutter_platform_interface.dart';

import '../support/fake_school_web.dart';
import '../support/fakes.dart';

// Native WebView rendering is unavailable to widget tests. All session and
// authentication logic still uses the real controller through the platform.
class _WidgetSchoolPlatform extends FakeSchoolPlatform {
  @override
  PlatformWebViewWidget createPlatformWebViewWidget(
    PlatformWebViewWidgetCreationParams params,
  ) => _WebSurface(params);
}

class _WebSurface extends PlatformWebViewWidget {
  _WebSurface(super.params) : super.implementation();
  @override
  Widget build(BuildContext context) => const SizedBox.expand();
}

void main() {
  testWidgets(
    'picker waits for school login and selected row only imports on confirmation',
    (tester) async {
      final platform = _WidgetSchoolPlatform();
      WebViewPlatform.instance = platform;
      final session = SchoolSession();
      final controller = AppController(
        MemoryStore(),
        FakeNotifications(),
        FakeCalendar(),
        () => DateTime(2026, 10, 13),
      );
      await controller.initialize();
      await session.openExams();
      await tester.pumpWidget(
        MaterialApp(
          home: SchoolAuthPage(session: session, controller: controller),
        ),
      );
      await tester.pumpAndSettle();
      expect(find.text('选择学校学期'), findsNothing);
      const home = 'https://yjsjy.uestc.edu.cn/pyxx/home/index';
      platform.web.url = home;
      platform.web.javascript = (_) async =>
          schoolPageEvidence(topUrl: home, authenticated: true);
      platform.delegate.started(home);
      platform.delegate.finished(home);
      await tester.pumpAndSettle();
      expect(find.text('选择学校学期'), findsOneWidget);
      await tester.tap(find.text('2025-2026年春'));
      await tester.pump();
      expect(platform.web.loads.length, 1);
      expect(controller.snapshot.schoolTerm, isNull);
      await tester.tap(find.text('导入所选学期'));
      await tester.pump();
      expect(
        platform.web.loads.last,
        'https://yjsjy.uestc.edu.cn/pyxx/pygl/kskcxx/index?xq=72',
      );
      expect(controller.snapshot.schoolTerm, isNull);
      await tester.pumpWidget(const SizedBox());
      session.dispose();
      controller.dispose();
    },
  );

  testWidgets('canceling a connected term change leaves saved term intact', (
    tester,
  ) async {
    final platform = _WidgetSchoolPlatform();
    WebViewPlatform.instance = platform;
    final session = SchoolSession();
    final controller = AppController(
      MemoryStore(AppSnapshot(schoolTerm: SchoolTerm(72))),
      FakeNotifications(),
      FakeCalendar(),
      () => DateTime(2026, 10, 13),
    );
    await controller.initialize();
    session.connectionState = SchoolConnectionState.connected;
    await session.openTimetable(term: SchoolTerm(72), chooseTerm: true);
    await tester.pumpWidget(
      MaterialApp(
        home: Builder(
          builder: (context) => TextButton(
            onPressed: () => Navigator.of(context).push(
              MaterialPageRoute<void>(
                builder: (_) =>
                    SchoolAuthPage(session: session, controller: controller),
              ),
            ),
            child: const Text('打开学校'),
          ),
        ),
      ),
    );
    await tester.tap(find.text('打开学校'));
    await tester.pumpAndSettle();
    expect(find.text('选择学校学期'), findsOneWidget);
    await tester.tap(find.text('2026-2027年秋'));
    await tester.tap(find.text('取消'));
    await tester.pumpAndSettle();
    expect(find.text('选择学校学期'), findsNothing);
    expect(platform.web.loads, isEmpty);
    expect(session.selectedTerm, SchoolTerm(72));
    expect(controller.snapshot.schoolTerm, SchoolTerm(72));
    await tester.pumpWidget(const SizedBox());
    session.dispose();
    controller.dispose();
  });
}