import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:worldhopper/l10n/app_localizations.dart';
import 'package:worldhopper/config/constants.dart';
import 'package:worldhopper/helpers/snackbar_helper.dart';
import 'package:worldhopper/providers/developer_mode_provider.dart';
import 'package:worldhopper/providers/package_info_provider.dart';
import 'package:worldhopper/screens/settings/dev_tests_screen.dart';
import 'package:worldhopper/widgets/worldhopper_app_bar.dart';

/// Screen for advanced settings
class AdvancedSettingsScreen extends ConsumerWidget {
  const AdvancedSettingsScreen({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final l10n = AppLocalizations.of(context);
    final packageInfoAsync = ref.watch(packageInfoProvider);
    final isDeveloperMode = ref.watch(developerModeNotifierProvider);

    return Scaffold(
      appBar: WorldhopperAppBar(
        title: Text(l10n.advancedTitle),
      ),
      body: ListView(
        children: [
          const SizedBox(height: 8),
          Card(
            margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
            child: Column(
              children: [
                SwitchListTile(
                  secondary: const Icon(Icons.developer_mode),
                  title: Text(l10n.advancedDeveloperMode),
                  subtitle: Text(l10n.advancedDeveloperModeSubtitle),
                  value: isDeveloperMode,
                  onChanged: (value) {
                    ref
                        .read(developerModeNotifierProvider.notifier)
                        .setDeveloperMode(value);
                  },
                ),
                if (isDeveloperMode) ...[
                  const Divider(height: 1),
                  ListTile(
                    leading: const Icon(Icons.science_outlined),
                    title: Text(l10n.advancedTests),
                    subtitle: Text(l10n.advancedTestsSubtitle),
                    trailing: const Icon(Icons.chevron_right),
                    onTap: () {
                      Navigator.of(context).push(
                        MaterialPageRoute(
                          builder: (_) => const DevTestsScreen(),
                        ),
                      );
                    },
                  ),
                ],
              ],
            ),
          ),
          _buildSectionHeader(context, l10n.advancedDebuggingInfo),
          Card(
            margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
            child: packageInfoAsync.when(
              data: (info) {
                final platform =
                    '${Platform.operatingSystem} ${Platform.operatingSystemVersion}';
                return Column(
                  children: [
                    ListTile(
                      leading: const Icon(Icons.label_outline),
                      title: Text(l10n.advancedVersion),
                      subtitle: Text(info.version),
                    ),
                    ListTile(
                      leading: const Icon(Icons.build_outlined),
                      title: Text(l10n.advancedBuildNumber),
                      subtitle: Text(info.buildNumber),
                    ),
                    ListTile(
                      leading: const Icon(Icons.inventory_2_outlined),
                      title: Text(l10n.advancedPackageName),
                      subtitle: Text(info.packageName),
                    ),
                    ListTile(
                      leading: const Icon(Icons.storage_outlined),
                      title: Text(l10n.advancedDatabaseVersion),
                      subtitle: const Text('${AppConstants.databaseVersion}'),
                    ),
                    ListTile(
                      leading: Icon(Platform.isIOS
                          ? Icons.phone_iphone
                          : Icons.phone_android),
                      title: Text(l10n.advancedPlatform),
                      subtitle: Text(platform),
                    ),
                    ListTile(
                      leading: const Icon(Icons.copy),
                      title: Text(l10n.advancedCopyToClipboard),
                      subtitle: Text(l10n.advancedCopyToClipboardSubtitle),
                      onTap: () {
                        final debugInfo = StringBuffer()
                          ..writeln('Version: ${info.version}')
                          ..writeln('Build number: ${info.buildNumber}')
                          ..writeln('Package name: ${info.packageName}')
                          ..writeln(
                              'Database version: ${AppConstants.databaseVersion}')
                          ..writeln('Platform: $platform');
                        Clipboard.setData(
                            ClipboardData(text: debugInfo.toString().trim()));
                        context.showInfoSnackBar(l10n.advancedDebugInfoCopied);
                      },
                    ),
                  ],
                );
              },
              loading: () => const Padding(
                padding: EdgeInsets.all(16),
                child: Center(child: CircularProgressIndicator()),
              ),
              error: (error, _) => ListTile(
                leading: const Icon(Icons.error_outline),
                title: Text(l10n.advancedFailedToLoadInfo),
                subtitle: Text('$error'),
              ),
            ),
          ),
          const SizedBox(height: 16),
        ],
      ),
    );
  }

  Widget _buildSectionHeader(BuildContext context, String title) {
    return Padding(
      padding: const EdgeInsets.fromLTRB(32, 24, 16, 8),
      child: Text(
        title,
        style: Theme.of(context).textTheme.titleSmall?.copyWith(
              color: Theme.of(context).colorScheme.primary,
              fontWeight: FontWeight.bold,
            ),
      ),
    );
  }
}