lunchpick/lib/presentation/pages/settings/settings_screen.dart

import 'package:flutter/material.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:adaptive_theme/adaptive_theme.dart';
import 'package:permission_handler/permission_handler.dart';
import '../../../core/constants/app_colors.dart';
import '../../../core/constants/app_typography.dart';
import '../../providers/settings_provider.dart';

class SettingsScreen extends ConsumerStatefulWidget {
  const SettingsScreen({super.key});

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

class _SettingsScreenState extends ConsumerState<SettingsScreen> {
  int _daysToExclude = 7;
  int _notificationMinutes = 90;
  bool _notificationEnabled = true;
  
  @override
  void initState() {
    super.initState();
    _loadSettings();
  }
  
  Future<void> _loadSettings() async {
    final daysToExclude = await ref.read(daysToExcludeProvider.future);
    final notificationMinutes = await ref.read(notificationDelayMinutesProvider.future);
    final notificationEnabled = await ref.read(notificationEnabledProvider.future);
    
    if (mounted) {
      setState(() {
        _daysToExclude = daysToExclude;
        _notificationMinutes = notificationMinutes;
        _notificationEnabled = notificationEnabled;
      });
    }
  }
  
  @override
  Widget build(BuildContext context) {
    final isDark = Theme.of(context).brightness == Brightness.dark;
    
    return Scaffold(
      backgroundColor: isDark ? AppColors.darkBackground : AppColors.lightBackground,
      appBar: AppBar(
        title: const Text('설정'),
        backgroundColor: isDark ? AppColors.darkPrimary : AppColors.lightPrimary,
        foregroundColor: Colors.white,
        elevation: 0,
      ),
      body: ListView(
        children: [
          // 추천 설정
          _buildSection(
            '추천 설정',
            [
              Card(
                margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
                child: ListTile(
                  title: const Text('중복 방문 제외 기간'),
                  subtitle: Text('$_daysToExclude일 이내 방문한 곳은 추천에서 제외'),
                  trailing: Row(
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      IconButton(
                        icon: const Icon(Icons.remove_circle_outline),
                        onPressed: _daysToExclude > 1 
                            ? () async {
                                setState(() => _daysToExclude--);
                                await ref.read(settingsNotifierProvider.notifier)
                                    .setDaysToExclude(_daysToExclude);
                              }
                            : null,
                        color: AppColors.lightPrimary,
                      ),
                      Container(
                        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
                        decoration: BoxDecoration(
                          color: AppColors.lightPrimary.withOpacity(0.1),
                          borderRadius: BorderRadius.circular(8),
                        ),
                        child: Text(
                          '$_daysToExclude일',
                          style: const TextStyle(
                            fontWeight: FontWeight.bold,
                            color: AppColors.lightPrimary,
                          ),
                        ),
                      ),
                      IconButton(
                        icon: const Icon(Icons.add_circle_outline),
                        onPressed: () async {
                          setState(() => _daysToExclude++);
                          await ref.read(settingsNotifierProvider.notifier)
                              .setDaysToExclude(_daysToExclude);
                        },
                        color: AppColors.lightPrimary,
                      ),
                    ],
                  ),
                ),
              ),
            ],
            isDark,
          ),
          
          // 권한 설정
          _buildSection(
            '권한 관리',
            [
              FutureBuilder<PermissionStatus>(
                future: Permission.location.status,
                builder: (context, snapshot) {
                  final status = snapshot.data;
                  final isGranted = status?.isGranted ?? false;
                  
                  return _buildPermissionTile(
                    icon: Icons.location_on,
                    title: '위치 권한',
                    subtitle: '주변 맛집 거리 계산에 필요',
                    isGranted: isGranted,
                    onRequest: _requestLocationPermission,
                    isDark: isDark,
                  );
                },
              ),
              if (!kIsWeb)
                FutureBuilder<PermissionStatus>(
                  future: Permission.bluetooth.status,
                  builder: (context, snapshot) {
                    final status = snapshot.data;
                    final isGranted = status?.isGranted ?? false;
                    
                    return _buildPermissionTile(
                      icon: Icons.bluetooth,
                      title: '블루투스 권한',
                      subtitle: '맛집 리스트 공유에 필요',
                      isGranted: isGranted,
                      onRequest: _requestBluetoothPermission,
                      isDark: isDark,
                    );
                  },
                ),
              FutureBuilder<PermissionStatus>(
                future: Permission.notification.status,
                builder: (context, snapshot) {
                  final status = snapshot.data;
                  final isGranted = status?.isGranted ?? false;
                  
                  return _buildPermissionTile(
                    icon: Icons.notifications,
                    title: '알림 권한',
                    subtitle: '방문 확인 알림에 필요',
                    isGranted: isGranted,
                    onRequest: _requestNotificationPermission,
                    isDark: isDark,
                  );
                },
              ),
            ],
            isDark,
          ),
          
          // 알림 설정
          _buildSection(
            '알림 설정',
            [
              Card(
                margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
                child: SwitchListTile(
                  title: const Text('방문 확인 알림'),
                  subtitle: const Text('맛집 방문 후 확인 알림을 받습니다'),
                  value: _notificationEnabled,
                  onChanged: (value) async {
                    setState(() => _notificationEnabled = value);
                    await ref.read(settingsNotifierProvider.notifier)
                        .setNotificationEnabled(value);
                  },
                  activeColor: AppColors.lightPrimary,
                ),
              ),
              Card(
                margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
                child: ListTile(
                  enabled: _notificationEnabled,
                  title: const Text('방문 확인 알림 시간'),
                  subtitle: Text('추천 후 $_notificationMinutes분 뒤 알림'),
                  trailing: Row(
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      IconButton(
                        icon: const Icon(Icons.remove_circle_outline),
                        onPressed: _notificationEnabled && _notificationMinutes > 60 
                            ? () async {
                                setState(() => _notificationMinutes -= 30);
                                await ref.read(settingsNotifierProvider.notifier)
                                    .setNotificationDelayMinutes(_notificationMinutes);
                              }
                            : null,
                        color: AppColors.lightPrimary,
                      ),
                      Container(
                        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
                        decoration: BoxDecoration(
                          color: AppColors.lightPrimary.withOpacity(0.1),
                          borderRadius: BorderRadius.circular(8),
                        ),
                        child: Text(
                          '${_notificationMinutes ~/ 60}시간 ${_notificationMinutes % 60}분',
                          style: TextStyle(
                            fontWeight: FontWeight.bold,
                            color: _notificationEnabled ? AppColors.lightPrimary : Colors.grey,
                          ),
                        ),
                      ),
                      IconButton(
                        icon: const Icon(Icons.add_circle_outline),
                        onPressed: _notificationEnabled && _notificationMinutes < 360
                            ? () async {
                                setState(() => _notificationMinutes += 30);
                                await ref.read(settingsNotifierProvider.notifier)
                                    .setNotificationDelayMinutes(_notificationMinutes);
                              }
                            : null,
                        color: AppColors.lightPrimary,
                      ),
                    ],
                  ),
                ),
              ),
            ],
            isDark,
          ),
          
          // 테마 설정
          _buildSection(
            '테마',
            [
              Card(
                margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
                child: ListTile(
                  leading: Icon(
                    isDark ? Icons.dark_mode : Icons.light_mode,
                    color: AppColors.lightPrimary,
                  ),
                  title: const Text('테마 설정'),
                  subtitle: Text(isDark ? '다크 모드' : '라이트 모드'),
                  trailing: Switch(
                    value: isDark,
                    onChanged: (value) {
                      if (value) {
                        AdaptiveTheme.of(context).setDark();
                      } else {
                        AdaptiveTheme.of(context).setLight();
                      }
                    },
                    activeColor: AppColors.lightPrimary,
                  ),
                ),
              ),
            ],
            isDark,
          ),
          
          // 앱 정보
          _buildSection(
            '앱 정보',
            [
              Card(
                margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(12),
                ),
                child: Column(
                  children: [
                    const ListTile(
                      leading: Icon(Icons.info_outline, color: AppColors.lightPrimary),
                      title: Text('버전'),
                      subtitle: Text('1.0.0'),
                    ),
                    const Divider(height: 1),
                    const ListTile(
                      leading: Icon(Icons.person_outline, color: AppColors.lightPrimary),
                      title: Text('개발자'),
                      subtitle: Text('NatureBridgeAI'),
                    ),
                    const Divider(height: 1),
                    ListTile(
                      leading: const Icon(Icons.description_outlined, color: AppColors.lightPrimary),
                      title: const Text('오픈소스 라이센스'),
                      trailing: const Icon(Icons.arrow_forward_ios, size: 16),
                      onTap: () => showLicensePage(
                        context: context,
                        applicationName: '오늘 뭐 먹Z?',
                        applicationVersion: '1.0.0',
                        applicationLegalese: '© 2025 NatureBridgeAI',
                      ),
                    ),
                  ],
                ),
              ),
            ],
            isDark,
          ),
          
          const SizedBox(height: 24),
        ],
      ),
    );
  }
  
  Widget _buildSection(String title, List<Widget> children, bool isDark) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Padding(
          padding: const EdgeInsets.fromLTRB(20, 20, 20, 8),
          child: Text(
            title,
            style: AppTypography.body2(isDark).copyWith(
              color: AppColors.lightPrimary,
              fontWeight: FontWeight.w600,
            ),
          ),
        ),
        ...children,
      ],
    );
  }
  
  Widget _buildPermissionTile({
    required IconData icon,
    required String title,
    required String subtitle,
    required bool isGranted,
    required VoidCallback onRequest,
    required bool isDark,
  }) {
    return Card(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
      color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(12),
      ),
      child: ListTile(
        leading: Icon(icon, color: isGranted ? Colors.green : Colors.grey),
        title: Text(title),
        subtitle: Text(subtitle),
        trailing: isGranted 
            ? const Icon(Icons.check_circle, color: Colors.green)
            : ElevatedButton(
                onPressed: onRequest,
                style: ElevatedButton.styleFrom(
                  backgroundColor: AppColors.lightPrimary,
                  foregroundColor: Colors.white,
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(8),
                  ),
                ),
                child: const Text('허용'),
              ),
        enabled: !isGranted,
      ),
    );
  }
  
  Future<void> _requestLocationPermission() async {
    final status = await Permission.location.request();
    if (status.isGranted) {
      setState(() {});
    } else if (status.isPermanentlyDenied) {
      _showPermissionDialog('위치');
    }
  }
  
  Future<void> _requestBluetoothPermission() async {
    final status = await Permission.bluetooth.request();
    if (status.isGranted) {
      setState(() {});
    } else if (status.isPermanentlyDenied) {
      _showPermissionDialog('블루투스');
    }
  }
  
  Future<void> _requestNotificationPermission() async {
    final status = await Permission.notification.request();
    if (status.isGranted) {
      setState(() {});
    } else if (status.isPermanentlyDenied) {
      _showPermissionDialog('알림');
    }
  }
  
  void _showPermissionDialog(String permissionName) {
    final isDark = Theme.of(context).brightness == Brightness.dark;
    
    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        backgroundColor: isDark ? AppColors.darkSurface : AppColors.lightSurface,
        title: const Text('권한 설정 필요'),
        content: Text('$permissionName 권한이 거부되었습니다. 설정에서 직접 권한을 허용해주세요.'),
        actions: [
          TextButton(
            onPressed: () => Navigator.pop(context),
            child: const Text('취소'),
          ),
          TextButton(
            onPressed: () {
              Navigator.pop(context);
              openAppSettings();
            },
            style: TextButton.styleFrom(
              foregroundColor: AppColors.lightPrimary,
            ),
            child: const Text('설정으로 이동'),
          ),
        ],
      ),
    );
  }
}