import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

import '../../../../push/push_registration.dart';
import '../../../../routing/app_routes.dart';
import '../../../../state/app/modules/settings/bloc/settings_cubit.dart';
import '../../../../widget/centered_leading.dart';
import '../widgets/push_status_sheet.dart';
import '../widgets/settings_checkbox_tile.dart';

class TalkSection extends StatelessWidget {
  const TalkSection({super.key});

  @override
  Widget build(BuildContext context) {
    final settings = context.watch<SettingsCubit>();
    final talkSettings = settings.val().talkSettings;
    final notificationSettings = settings.val().notificationSettings;
    return Column(
      children: [
        SettingsCheckboxTile(
          icon: Icons.star_border,
          title: 'Favoriten im Talk nach oben sortieren',
          value: talkSettings.sortFavoritesToTop,
          onChanged: (e) =>
              settings.val(write: true).talkSettings.sortFavoritesToTop = e,
        ),
        SettingsCheckboxTile(
          icon: Icons.mark_email_unread_outlined,
          title: 'Ungelesene Chats nach oben sortieren',
          value: talkSettings.sortUnreadToTop,
          onChanged: (e) =>
              settings.val(write: true).talkSettings.sortUnreadToTop = e,
        ),
        ListTile(
          leading: const Icon(Icons.wallpaper_outlined),
          title: const Text('Chat-Hintergrund'),
          subtitle: const Text('Bild, Farbe und Darstellung anpassen'),
          trailing: const Icon(Icons.arrow_right),
          onTap: () => AppRoutes.openChatBackgroundSettings(context),
        ),
        SettingsCheckboxTile(
          icon: Icons.notifications_active_outlined,
          title: 'Push-Benachrichtigungen',
          subtitle: 'Benachrichtigungen bei neuen Talk-Nachrichten erhalten',
          value: notificationSettings.enabled,
          onChanged: (enabled) {
            settings.val(write: true).notificationSettings.enabled = enabled;
            // Turning off does NOT unregister: the device stays subscribed so
            // silent sync pushes keep arriving; the message handler and iOS
            // NSE suppress only the visible notification (via the mirrored
            // flag). Enabling (re-)registers and ensures the OS permission.
            if (enabled) {
              final messenger = ScaffoldMessenger.of(context);
              unawaited(() async {
                // Only register when the OS permission isn't explicitly
                // denied — otherwise NC + proxy would push into the void.
                if (await PushRegistration.requestOsPermission()) {
                  await PushRegistration().register();
                } else {
                  messenger.showSnackBar(
                    const SnackBar(
                      content: Text(
                        'Die Benachrichtigungsberechtigung wurde in den '
                        'Systemeinstellungen deaktiviert. Bitte aktiviere '
                        'sie dort, um Push-Benachrichtigungen zu erhalten.',
                      ),
                    ),
                  );
                }
              }());
            }
          },
        ),
        ListTile(
          leading: const CenteredLeading(Icon(Icons.monitor_heart_outlined)),
          title: const Text('Push-Status'),
          subtitle: const Text('Registrierung und Zustellung im Detail'),
          trailing: const Icon(Icons.arrow_right),
          onTap: () => showPushStatusSheet(context),
        ),
      ],
    );
  }
}