import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:nexo_messaging/nexo_messaging.dart';
import 'package:nexo_client/main.dart';

void main() {
  testWidgets('renders initial harness state', (WidgetTester tester) async {
    await tester.pumpWidget(const MyApp(initializePlugin: false));

    expect(find.text('Device token: pending'), findsOneWidget);
    expect(find.text('Last notification: none'), findsOneWidget);
    expect(find.text('Last opened: none'), findsOneWidget);
    expect(find.text('Last navigation: none'), findsOneWidget);

    // Thin host contract: body contains exactly 4 status Text widgets
    // and no product UI controls.
    final listViewFinder = find.byType(ListView);
    expect(listViewFinder, findsOneWidget);
    final statusTexts = find.descendant(
      of: listViewFinder,
      matching: find.byType(Text),
    );
    expect(statusTexts, findsNWidgets(4));
    expect(find.byType(ElevatedButton), findsNothing);
    expect(find.byType(TextField), findsNothing);

    await tester.pumpWidget(const SizedBox.shrink());
  });

  testWidgets('updates opened and navigation state from plugin events (channel)', (
    WidgetTester tester,
  ) async {
    await tester.pumpWidget(const MyApp(initializePlugin: false));

    NexoMessagingPlugin.instance.handleNativeEvent(const {
      'type': PushNotificationType.opened,
      'server_url': 'https://nexo.example.com',
      'channel_id': 'channel-123',
      'is_crt_enabled': 'false',
    });
    await tester.pump();

    expect(
      find.text(
        'Last notification: type: opened, server_url: https://nexo.example.com, channel_id: channel-123, is_crt_enabled: false',
      ),
      findsOneWidget,
    );
    expect(
      find.text(
        'Last opened: server_url: https://nexo.example.com, channel_id: channel-123, root_id: null, is_crt_enabled: false',
      ),
      findsOneWidget,
    );
    expect(
      find.text(
        'Last navigation: channel:https://nexo.example.com/channel-123',
      ),
      findsOneWidget,
    );

    await tester.pumpWidget(const SizedBox.shrink());
  });

  testWidgets(
    'updates opened and navigation state from plugin events (thread/CRT)',
    (WidgetTester tester) async {
      await tester.pumpWidget(const MyApp(initializePlugin: false));

      NexoMessagingPlugin.instance.handleNativeEvent(const {
        'type': PushNotificationType.opened,
        'server_url': 'https://nexo.example.com',
        'channel_id': 'channel-123',
        'root_id': 'thread-456',
        'is_crt_enabled': 'true',
      });
      await tester.pump();

      expect(
        find.text(
          'Last notification: type: opened, server_url: https://nexo.example.com, channel_id: channel-123, root_id: thread-456, is_crt_enabled: true',
        ),
        findsOneWidget,
      );
      expect(
        find.text(
          'Last opened: server_url: https://nexo.example.com, channel_id: channel-123, root_id: thread-456, is_crt_enabled: true',
        ),
        findsOneWidget,
      );
      expect(
        find.text(
          'Last navigation: thread:https://nexo.example.com/thread-456',
        ),
        findsOneWidget,
      );

      await tester.pumpWidget(const SizedBox.shrink());
    },
  );

  testWidgets(
    'updates opened and navigation state from plugin events (boolean CRT)',
    (WidgetTester tester) async {
      await tester.pumpWidget(const MyApp(initializePlugin: false));

      NexoMessagingPlugin.instance.handleNativeEvent(const {
        'type': PushNotificationType.opened,
        'server_url': 'https://nexo.example.com',
        'channel_id': 'channel-123',
        'root_id': 'thread-456',
        'is_crt_enabled': true,
      });
      await tester.pump();

      expect(
        find.text(
          'Last opened: server_url: https://nexo.example.com, channel_id: channel-123, root_id: thread-456, is_crt_enabled: true',
        ),
        findsOneWidget,
      );
      expect(
        find.text(
          'Last navigation: thread:https://nexo.example.com/thread-456',
        ),
        findsOneWidget,
      );

      await tester.pumpWidget(const SizedBox.shrink());
    },
  );

  testWidgets('updates device token from plugin callback', (
    WidgetTester tester,
  ) async {
    await tester.pumpWidget(const MyApp(initializePlugin: false));

    NexoMessagingPlugin.instance.onDeviceTokenReady?.call(
      'test-device-token-123',
    );
    await tester.pump();

    expect(find.text('Device token: test-device-token-123'), findsOneWidget);

    await tester.pumpWidget(const SizedBox.shrink());
  });
}