import 'package:flutter/material.dart';

import '../../../../l10n/app_localizations.dart';
import '../../../../shared/theme/app_color_palette.dart';
import '../../../../shared/theme/design_tokens.dart';
import '../../data/models/profile_settings.dart';
import '../widgets/settings_section_widgets.dart';
import 'coin_center_screen.dart';
import 'general_settings_screen.dart';
import 'legal_center_screen.dart';
import 'privacy_notification_settings_screen.dart';

class SettingsScreen extends StatefulWidget {
  const SettingsScreen({
    super.key,
    required this.account,
    required this.settings,
    required this.coinBalance,
    required this.onInterfaceLanguageChanged,
    required this.onLogout,
  });

  final String account;
  final ProfileSettingsV1 settings;
  final int coinBalance;
  final Future<void> Function(String languageTag) onInterfaceLanguageChanged;
  final Future<void> Function() onLogout;

  @override
  State<SettingsScreen> createState() => _SettingsScreenState();
}

class _SettingsScreenState extends State<SettingsScreen> {
  late ProfileSettingsV1 _settings;
  bool _isLoggingOut = false;

  @override
  void initState() {
    super.initState();
    _settings = widget.settings;
  }

  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context)!;
    final colors = Theme.of(context).colorScheme;
    final palette = Theme.of(context).extension<AppColorPalette>()!;

    return Scaffold(
      backgroundColor: colors.surfaceContainerLow,
      appBar: AppBar(
        title: Text(l10n.settingsTitle),
        centerTitle: true,
        backgroundColor: colors.surfaceContainerLow,
        surfaceTintColor: colors.surfaceContainerLow,
      ),
      body: ListView(
        padding: const EdgeInsets.fromLTRB(
          AppSpacing.lg,
          AppSpacing.md,
          AppSpacing.lg,
          AppSpacing.xl,
        ),
        children: [
          ProfileHeaderCard(
            account: widget.account,
            version: _settings.version,
          ),
          const SizedBox(height: AppSpacing.lg),
          WalletHeroCard(
            balance: widget.coinBalance,
            subtitle: l10n.settingsCoinHeroSubtitle,
            onTap: _openCoinCenter,
          ),
          const SizedBox(height: AppSpacing.xl),
          SectionLabel(text: l10n.settingsSectionQuickAccess),
          SettingsGroupCard(
            children: [
              SettingsMenuTile(
                icon: Icons.toll_rounded,
                title: l10n.settingsCoinCenterTitle,
                subtitle: l10n.settingsCoinCenterSubtitle(widget.coinBalance),
                tint: palette.historyGoldText,
                background: palette.historyGoldBg,
                onTap: _openCoinCenter,
              ),
              SettingsMenuTile(
                icon: Icons.tune_rounded,
                title: l10n.settingsGeneralTitle,
                subtitle: l10n.settingsGeneralSubtitle(
                  displayLanguageLabel(
                    l10n,
                    _settings.preferences.interfaceLanguage,
                  ),
                ),
                tint: colors.primary,
                background: colors.surfaceContainerHighest,
                onTap: _openGeneralSettings,
              ),
              SettingsMenuTile(
                icon: Icons.privacy_tip_outlined,
                title: l10n.settingsPrivacyAndNotificationTitle,
                subtitle: l10n.settingsPrivacyAndNotificationSubtitle,
                tint: palette.warning,
                background: palette.warningContainer,
                onTap: _openPrivacyAndNotification,
              ),
              SettingsMenuTile(
                icon: Icons.description_outlined,
                title: l10n.settingsLegalCenterTitle,
                subtitle: l10n.settingsLegalCenterSubtitle,
                tint: colors.secondary,
                background: colors.surfaceContainerHighest,
                showDivider: false,
                onTap: _openLegalCenter,
              ),
            ],
          ),
          const SizedBox(height: AppSpacing.xl),
          SectionLabel(text: l10n.settingsSectionAccount),
          SettingsGroupCard(
            children: [
              SettingsMenuTile(
                icon: Icons.logout_rounded,
                title: l10n.logout,
                subtitle: l10n.settingsLogoutSubtitle,
                tint: colors.error,
                background: colors.error.withValues(alpha: 0.08),
                showDivider: false,
                onTap: _confirmLogout,
              ),
            ],
          ),
          const SizedBox(height: AppSpacing.xl),
          FilledButton(
            onPressed: _isLoggingOut ? null : _confirmLogout,
            style: FilledButton.styleFrom(
              elevation: 0,
              backgroundColor: colors.error,
              foregroundColor: colors.onError,
              padding: const EdgeInsets.symmetric(vertical: AppSpacing.lg),
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(AppRadius.full),
              ),
            ),
            child: Text(l10n.logout),
          ),
        ],
      ),
    );
  }

  Future<void> _openCoinCenter() async {
    await Navigator.of(context).push<void>(
      MaterialPageRoute<void>(
        builder: (_) => CoinCenterScreen(balance: widget.coinBalance),
      ),
    );
  }

  Future<void> _openGeneralSettings() async {
    final result = await Navigator.of(context).push<ProfileSettingsV1>(
      MaterialPageRoute<ProfileSettingsV1>(
        builder: (_) => GeneralSettingsScreen(
          settings: _settings,
          onInterfaceLanguageChanged: widget.onInterfaceLanguageChanged,
        ),
      ),
    );
    if (result == null || !mounted) {
      return;
    }
    setState(() {
      _settings = result;
    });
  }

  Future<void> _openPrivacyAndNotification() async {
    await Navigator.of(context).push<void>(
      MaterialPageRoute<void>(
        builder: (_) => PrivacyNotificationSettingsScreen(settings: _settings),
      ),
    );
  }

  Future<void> _openLegalCenter() async {
    await Navigator.of(context).push<void>(
      MaterialPageRoute<void>(builder: (_) => const LegalCenterScreen()),
    );
  }

  Future<void> _confirmLogout() async {
    final l10n = AppLocalizations.of(context)!;
    final confirmed = await showDialog<bool>(
      context: context,
      builder: (dialogContext) {
        return AlertDialog(
          title: Text(l10n.settingsLogoutDialogTitle),
          content: Text(l10n.settingsLogoutDialogBody),
          actions: [
            TextButton(
              onPressed: () => Navigator.of(dialogContext).pop(false),
              child: Text(l10n.settingsCancel),
            ),
            FilledButton(
              onPressed: () => Navigator.of(dialogContext).pop(true),
              style: FilledButton.styleFrom(
                backgroundColor: Theme.of(dialogContext).colorScheme.error,
                foregroundColor: Theme.of(dialogContext).colorScheme.onError,
              ),
              child: Text(l10n.logout),
            ),
          ],
        );
      },
    );
    if (confirmed != true) {
      return;
    }

    setState(() {
      _isLoggingOut = true;
    });
    try {
      await widget.onLogout();
    } finally {
      if (mounted) {
        setState(() {
          _isLoggingOut = false;
        });
      }
    }
  }
}