import 'package:flutter/foundation.dart' show kDebugMode;
import 'package:flutter/material.dart';

import 'package:asciineverdie/src/core/notification/notification_service.dart';
import 'package:asciineverdie/data/game_text_l10n.dart' as l10n;
import 'package:asciineverdie/l10n/app_localizations.dart';
import 'package:asciineverdie/src/core/animation/ascii_animation_type.dart';
import 'package:asciineverdie/src/core/model/game_state.dart';
import 'package:asciineverdie/src/features/game/pages/character_sheet_page.dart';
import 'package:asciineverdie/src/features/game/pages/combat_log_page.dart';
import 'package:asciineverdie/src/features/game/pages/equipment_page.dart';
import 'package:asciineverdie/src/features/game/pages/inventory_page.dart';
import 'package:asciineverdie/src/features/game/pages/quest_page.dart';
import 'package:asciineverdie/src/features/game/pages/skills_page.dart';
import 'package:asciineverdie/src/features/game/pages/story_page.dart';
import 'package:asciineverdie/src/features/game/widgets/carousel_nav_bar.dart';
import 'package:asciineverdie/src/features/game/widgets/combat_log.dart';
import 'package:asciineverdie/src/features/game/widgets/enhanced_animation_panel.dart';
import 'package:asciineverdie/src/shared/retro_colors.dart';

/// 모바일 캐로셀 레이아웃
///
/// 모바일 앱용 레이아웃:
/// - 상단: 확장 애니메이션 패널 (ASCII 애니메이션, HP/MP, 버프, 몬스터 HP)
/// - 중앙: 캐로셀 (7개 페이지: 스킬, 인벤토리, 장비, 캐릭터시트, 전투로그, 스토리, 퀘스트)
/// - 하단: 네비게이션 바 (7개 버튼)
class MobileCarouselLayout extends StatefulWidget {
  const MobileCarouselLayout({
    super.key,
    required this.state,
    required this.combatLogEntries,
    required this.speedMultiplier,
    required this.onSpeedCycle,
    required this.isPaused,
    required this.onPauseToggle,
    required this.onSave,
    required this.onExit,
    required this.notificationService,
    required this.onLanguageChange,
    required this.onDeleteSaveAndNewGame,
    this.specialAnimation,
    this.currentThemeMode = ThemeMode.system,
    this.onThemeModeChange,
    this.bgmVolume = 0.7,
    this.sfxVolume = 0.8,
    this.onBgmVolumeChange,
    this.onSfxVolumeChange,
    this.onShowStatistics,
    this.onShowHelp,
    this.cheatsEnabled = false,
    this.onCheatTask,
    this.onCheatQuest,
    this.onCheatPlot,
    this.onCreateTestCharacter,
  });

  final GameState state;
  final List<CombatLogEntry> combatLogEntries;
  final int speedMultiplier;
  final VoidCallback onSpeedCycle;
  final bool isPaused;
  final VoidCallback onPauseToggle;
  final VoidCallback onSave;
  final VoidCallback onExit;
  final NotificationService notificationService;
  final void Function(String locale) onLanguageChange;
  final VoidCallback onDeleteSaveAndNewGame;
  final AsciiAnimationType? specialAnimation;
  final ThemeMode currentThemeMode;
  final void Function(ThemeMode mode)? onThemeModeChange;

  /// BGM 볼륨 (0.0 ~ 1.0)
  final double bgmVolume;

  /// SFX 볼륨 (0.0 ~ 1.0)
  final double sfxVolume;

  /// BGM 볼륨 변경 콜백
  final void Function(double volume)? onBgmVolumeChange;

  /// SFX 볼륨 변경 콜백
  final void Function(double volume)? onSfxVolumeChange;

  /// 통계 표시 콜백
  final VoidCallback? onShowStatistics;

  /// 도움말 표시 콜백
  final VoidCallback? onShowHelp;

  /// 치트 모드 활성화 여부
  final bool cheatsEnabled;

  /// 치트: 태스크 완료
  final VoidCallback? onCheatTask;

  /// 치트: 퀘스트 완료
  final VoidCallback? onCheatQuest;

  /// 치트: 액트(플롯) 완료
  final VoidCallback? onCheatPlot;

  /// 테스트 캐릭터 생성 콜백 (디버그 모드 전용)
  final Future<void> Function()? onCreateTestCharacter;

  @override
  State<MobileCarouselLayout> createState() => _MobileCarouselLayoutState();
}

class _MobileCarouselLayoutState extends State<MobileCarouselLayout> {
  late PageController _pageController;
  int _currentPage = CarouselPage.character.index; // 기본: 캐릭터시트

  @override
  void initState() {
    super.initState();
    _pageController = PageController(initialPage: _currentPage);
  }

  @override
  void dispose() {
    _pageController.dispose();
    super.dispose();
  }

  void _onPageChanged(int page) {
    setState(() {
      _currentPage = page;
    });
  }

  void _onNavPageSelected(int page) {
    _pageController.animateToPage(
      page,
      duration: const Duration(milliseconds: 300),
      curve: Curves.easeInOut,
    );
  }

  /// 현재 언어명 가져오기
  String _getCurrentLanguageName() {
    final locale = l10n.currentGameLocale;
    if (locale == 'ko') return l10n.languageKorean;
    if (locale == 'ja') return l10n.languageJapanese;
    return l10n.languageEnglish;
  }

  /// 현재 테마명 가져오기
  String _getCurrentThemeName() {
    return switch (widget.currentThemeMode) {
      ThemeMode.light => l10n.themeLight,
      ThemeMode.dark => l10n.themeDark,
      ThemeMode.system => l10n.themeSystem,
    };
  }

  /// 테마 아이콘 가져오기
  IconData _getThemeIcon() {
    return switch (widget.currentThemeMode) {
      ThemeMode.light => Icons.light_mode,
      ThemeMode.dark => Icons.dark_mode,
      ThemeMode.system => Icons.brightness_auto,
    };
  }

  /// 테마 선택 다이얼로그 표시
  void _showThemeDialog(BuildContext context) {
    showDialog<void>(
      context: context,
      builder: (context) => AlertDialog(
        title: Text(l10n.menuTheme),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            _buildThemeOption(context, ThemeMode.system, l10n.themeSystem),
            _buildThemeOption(context, ThemeMode.light, l10n.themeLight),
            _buildThemeOption(context, ThemeMode.dark, l10n.themeDark),
          ],
        ),
      ),
    );
  }

  Widget _buildThemeOption(BuildContext context, ThemeMode mode, String label) {
    final isSelected = widget.currentThemeMode == mode;
    return ListTile(
      leading: Icon(
        isSelected ? Icons.radio_button_checked : Icons.radio_button_unchecked,
        color: isSelected ? Theme.of(context).colorScheme.primary : null,
      ),
      title: Text(
        label,
        style: TextStyle(
          fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
        ),
      ),
      onTap: () {
        Navigator.pop(context); // 다이얼로그 닫기
        widget.onThemeModeChange?.call(mode);
      },
    );
  }

  /// 언어 선택 다이얼로그 표시
  void _showLanguageDialog(BuildContext context) {
    showDialog<void>(
      context: context,
      builder: (context) => AlertDialog(
        title: Text(l10n.menuLanguage),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            _buildLanguageOption(context, 'en', l10n.languageEnglish),
            _buildLanguageOption(context, 'ko', l10n.languageKorean),
            _buildLanguageOption(context, 'ja', l10n.languageJapanese),
          ],
        ),
      ),
    );
  }

  Widget _buildLanguageOption(
    BuildContext context,
    String locale,
    String label,
  ) {
    final isSelected = l10n.currentGameLocale == locale;
    return ListTile(
      leading: Icon(
        isSelected ? Icons.radio_button_checked : Icons.radio_button_unchecked,
        color: isSelected ? Theme.of(context).colorScheme.primary : null,
      ),
      title: Text(
        label,
        style: TextStyle(
          fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
        ),
      ),
      onTap: () {
        Navigator.pop(context); // 다이얼로그 닫기
        widget.onLanguageChange(locale);
      },
    );
  }

  /// 사운드 상태 텍스트 가져오기
  String _getSoundStatus() {
    final bgmPercent = (widget.bgmVolume * 100).round();
    final sfxPercent = (widget.sfxVolume * 100).round();
    if (bgmPercent == 0 && sfxPercent == 0) {
      return l10n.uiSoundOff;
    }
    return 'BGM $bgmPercent% / SFX $sfxPercent%';
  }

  /// 사운드 설정 다이얼로그 표시
  void _showSoundDialog(BuildContext context) {
    // StatefulBuilder를 사용하여 다이얼로그 내 상태 관리
    var bgmVolume = widget.bgmVolume;
    var sfxVolume = widget.sfxVolume;

    showDialog<void>(
      context: context,
      builder: (context) => StatefulBuilder(
        builder: (context, setDialogState) => AlertDialog(
          title: Text(l10n.uiSound),
          content: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              // BGM 볼륨
              Row(
                children: [
                  Icon(
                    bgmVolume == 0 ? Icons.music_off : Icons.music_note,
                    color: Theme.of(context).colorScheme.primary,
                  ),
                  const SizedBox(width: 8),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Row(
                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
                          children: [
                            Text(l10n.uiBgmVolume),
                            Text('${(bgmVolume * 100).round()}%'),
                          ],
                        ),
                        Slider(
                          value: bgmVolume,
                          onChanged: (value) {
                            setDialogState(() => bgmVolume = value);
                            widget.onBgmVolumeChange?.call(value);
                          },
                          divisions: 10,
                        ),
                      ],
                    ),
                  ),
                ],
              ),
              const SizedBox(height: 8),
              // SFX 볼륨
              Row(
                children: [
                  Icon(
                    sfxVolume == 0 ? Icons.volume_off : Icons.volume_up,
                    color: Theme.of(context).colorScheme.primary,
                  ),
                  const SizedBox(width: 8),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Row(
                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
                          children: [
                            Text(l10n.uiSfxVolume),
                            Text('${(sfxVolume * 100).round()}%'),
                          ],
                        ),
                        Slider(
                          value: sfxVolume,
                          onChanged: (value) {
                            setDialogState(() => sfxVolume = value);
                            widget.onSfxVolumeChange?.call(value);
                          },
                          divisions: 10,
                        ),
                      ],
                    ),
                  ),
                ],
              ),
            ],
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: Text(l10n.buttonConfirm),
            ),
          ],
        ),
      ),
    );
  }

  /// 세이브 삭제 확인 다이얼로그 표시
  void _showDeleteConfirmDialog(BuildContext context) {
    showDialog<void>(
      context: context,
      builder: (context) => AlertDialog(
        title: Text(l10n.confirmDeleteTitle),
        content: Text(l10n.confirmDeleteMessage),
        actions: [
          TextButton(
            onPressed: () => Navigator.pop(context),
            child: Text(l10n.buttonCancel),
          ),
          TextButton(
            onPressed: () {
              Navigator.pop(context); // 다이얼로그 닫기
              widget.onDeleteSaveAndNewGame();
            },
            style: TextButton.styleFrom(foregroundColor: Colors.red),
            child: Text(l10n.buttonConfirm),
          ),
        ],
      ),
    );
  }

  /// 테스트 캐릭터 생성 확인 다이얼로그
  Future<void> _showTestCharacterDialog(BuildContext context) async {
    final confirmed = await showDialog<bool>(
      context: context,
      builder: (context) => AlertDialog(
        title: const Text('Create Test Character?'),
        content: const Text(
          '현재 캐릭터가 레벨 100으로 변환되어 명예의 전당에 등록됩니다.\n\n'
          '⚠️ 현재 세이브 파일이 삭제됩니다.\n'
          '이 작업은 되돌릴 수 없습니다.',
        ),
        actions: [
          TextButton(
            onPressed: () => Navigator.of(context).pop(false),
            child: const Text('Cancel'),
          ),
          ElevatedButton(
            onPressed: () => Navigator.of(context).pop(true),
            style: ElevatedButton.styleFrom(
              backgroundColor: Theme.of(context).colorScheme.error,
              foregroundColor: Theme.of(context).colorScheme.onError,
            ),
            child: const Text('Create'),
          ),
        ],
      ),
    );

    if (confirmed == true && mounted) {
      await widget.onCreateTestCharacter?.call();
    }
  }

  /// 옵션 메뉴 표시
  void _showOptionsMenu(BuildContext context) {
    final localizations = L10n.of(context);
    final panelBg = RetroColors.panelBgOf(context);
    final gold = RetroColors.goldOf(context);
    final surface = RetroColors.surfaceOf(context);

    showModalBottomSheet<void>(
      context: context,
      isScrollControlled: true,
      backgroundColor: panelBg,
      constraints: BoxConstraints(
        maxHeight: MediaQuery.of(context).size.height * 0.7,
      ),
      builder: (context) => SafeArea(
        child: SingleChildScrollView(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              // 헤더 (레트로 스타일)
              Container(
                padding: const EdgeInsets.all(16),
                width: double.infinity,
                decoration: BoxDecoration(
                  color: surface,
                  border: Border(bottom: BorderSide(color: gold, width: 2)),
                ),
                child: Text(
                  'OPTIONS',
                  style: TextStyle(
                    fontFamily: 'PressStart2P',
                    fontSize: 12,
                    color: gold,
                  ),
                ),
              ),

              // 일시정지/재개
              ListTile(
                leading: Icon(
                  widget.isPaused ? Icons.play_arrow : Icons.pause,
                  color: widget.isPaused ? Colors.green : Colors.orange,
                ),
                title: Text(widget.isPaused ? l10n.menuResume : l10n.menuPause),
                onTap: () {
                  Navigator.pop(context);
                  widget.onPauseToggle();
                },
              ),

              // 속도 조절
              ListTile(
                leading: const Icon(Icons.speed),
                title: Text(l10n.menuSpeed),
                trailing: Container(
                  padding: const EdgeInsets.symmetric(
                    horizontal: 12,
                    vertical: 4,
                  ),
                  decoration: BoxDecoration(
                    color: Theme.of(context).colorScheme.primaryContainer,
                    borderRadius: BorderRadius.circular(12),
                  ),
                  child: Text(
                    '${widget.speedMultiplier}x',
                    style: TextStyle(
                      fontWeight: FontWeight.bold,
                      color: Theme.of(context).colorScheme.primary,
                    ),
                  ),
                ),
                onTap: () {
                  widget.onSpeedCycle();
                  Navigator.pop(context);
                },
              ),

              const Divider(),

              // 통계
              if (widget.onShowStatistics != null)
                ListTile(
                  leading: const Icon(Icons.bar_chart, color: Colors.blue),
                  title: Text(l10n.uiStatistics),
                  onTap: () {
                    Navigator.pop(context);
                    widget.onShowStatistics?.call();
                  },
                ),

              // 도움말
              if (widget.onShowHelp != null)
                ListTile(
                  leading: const Icon(Icons.help_outline, color: Colors.green),
                  title: Text(l10n.uiHelp),
                  onTap: () {
                    Navigator.pop(context);
                    widget.onShowHelp?.call();
                  },
                ),

              const Divider(),

              // 언어 변경
              ListTile(
                leading: const Icon(Icons.language, color: Colors.teal),
                title: Text(l10n.menuLanguage),
                trailing: Text(
                  _getCurrentLanguageName(),
                  style: TextStyle(
                    color: Theme.of(context).colorScheme.primary,
                  ),
                ),
                onTap: () {
                  Navigator.pop(context);
                  _showLanguageDialog(context);
                },
              ),

              // 테마 변경
              if (widget.onThemeModeChange != null)
                ListTile(
                  leading: Icon(_getThemeIcon(), color: Colors.purple),
                  title: Text(l10n.menuTheme),
                  trailing: Text(
                    _getCurrentThemeName(),
                    style: TextStyle(
                      color: Theme.of(context).colorScheme.primary,
                    ),
                  ),
                  onTap: () {
                    Navigator.pop(context);
                    _showThemeDialog(context);
                  },
                ),

              // 사운드 설정
              if (widget.onBgmVolumeChange != null ||
                  widget.onSfxVolumeChange != null)
                ListTile(
                  leading: Icon(
                    widget.bgmVolume == 0 && widget.sfxVolume == 0
                        ? Icons.volume_off
                        : Icons.volume_up,
                    color: Colors.indigo,
                  ),
                  title: Text(l10n.uiSound),
                  trailing: Text(
                    _getSoundStatus(),
                    style: TextStyle(
                      color: Theme.of(context).colorScheme.primary,
                    ),
                  ),
                  onTap: () {
                    Navigator.pop(context);
                    _showSoundDialog(context);
                  },
                ),

              const Divider(),

              // 저장
              ListTile(
                leading: const Icon(Icons.save, color: Colors.blue),
                title: Text(l10n.menuSave),
                onTap: () {
                  Navigator.pop(context);
                  widget.onSave();
                  widget.notificationService.showGameSaved(l10n.menuSaved);
                },
              ),

              // 새로하기 (세이브 삭제)
              ListTile(
                leading: const Icon(Icons.refresh, color: Colors.orange),
                title: Text(l10n.menuNewGame),
                subtitle: Text(
                  l10n.menuDeleteSave,
                  style: TextStyle(
                    fontSize: 12,
                    color: Theme.of(context).colorScheme.outline,
                  ),
                ),
                onTap: () {
                  Navigator.pop(context);
                  _showDeleteConfirmDialog(context);
                },
              ),

              // 종료
              ListTile(
                leading: const Icon(Icons.exit_to_app, color: Colors.red),
                title: Text(localizations.exitGame),
                onTap: () {
                  Navigator.pop(context);
                  widget.onExit();
                },
              ),

              // 치트 섹션 (디버그 모드에서만 표시)
              if (widget.cheatsEnabled) ...[
                const Divider(),
                Padding(
                  padding: const EdgeInsets.symmetric(
                    horizontal: 16,
                    vertical: 8,
                  ),
                  child: Text(
                    'DEBUG CHEATS',
                    style: TextStyle(
                      fontFamily: 'PressStart2P',
                      fontSize: 8,
                      color: Colors.red.shade300,
                    ),
                  ),
                ),
                ListTile(
                  leading: const Icon(Icons.fast_forward, color: Colors.red),
                  title: const Text('Skip Task (L+1)'),
                  subtitle: const Text('태스크 즉시 완료'),
                  onTap: () {
                    Navigator.pop(context);
                    widget.onCheatTask?.call();
                  },
                ),
                ListTile(
                  leading: const Icon(Icons.skip_next, color: Colors.red),
                  title: const Text('Skip Quest (Q!)'),
                  subtitle: const Text('퀘스트 즉시 완료'),
                  onTap: () {
                    Navigator.pop(context);
                    widget.onCheatQuest?.call();
                  },
                ),
                ListTile(
                  leading: const Icon(Icons.double_arrow, color: Colors.red),
                  title: const Text('Skip Act (P!)'),
                  subtitle: const Text('액트 즉시 완료 (명예의 전당 테스트용)'),
                  onTap: () {
                    Navigator.pop(context);
                    widget.onCheatPlot?.call();
                  },
                ),
              ],

              // 디버그 도구 섹션 (kDebugMode에서만 표시)
              if (kDebugMode && widget.onCreateTestCharacter != null) ...[
                const Divider(),
                Padding(
                  padding: const EdgeInsets.symmetric(
                    horizontal: 16,
                    vertical: 8,
                  ),
                  child: Text(
                    'DEBUG TOOLS',
                    style: TextStyle(
                      fontFamily: 'PressStart2P',
                      fontSize: 8,
                      color: Colors.orange.shade300,
                    ),
                  ),
                ),
                ListTile(
                  leading: const Icon(Icons.science, color: Colors.orange),
                  title: const Text('Create Test Character'),
                  subtitle: const Text('레벨 100 캐릭터를 명예의 전당에 등록'),
                  onTap: () {
                    Navigator.pop(context);
                    _showTestCharacterDialog(context);
                  },
                ),
              ],

              const SizedBox(height: 8),
            ],
          ),
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    final state = widget.state;
    final background = RetroColors.backgroundOf(context);
    final panelBg = RetroColors.panelBgOf(context);
    final gold = RetroColors.goldOf(context);

    return Scaffold(
      backgroundColor: background,
      appBar: AppBar(
        backgroundColor: panelBg,
        title: Text(
          L10n.of(context).progressQuestTitle(state.traits.name),
          style: TextStyle(
            fontFamily: 'PressStart2P',
            fontSize: 10,
            color: gold,
          ),
        ),
        actions: [
          // 옵션 버튼
          IconButton(
            icon: Icon(Icons.settings, color: gold),
            onPressed: () => _showOptionsMenu(context),
            tooltip: l10n.menuOptions,
          ),
        ],
      ),
      body: SafeArea(
        top: false, // AppBar가 상단 처리
        child: Column(
          children: [
            // 상단: 확장 애니메이션 패널
            EnhancedAnimationPanel(
              progress: state.progress,
              stats: state.stats,
              skillSystem: state.skillSystem,
              speedMultiplier: widget.speedMultiplier,
              onSpeedCycle: widget.onSpeedCycle,
              isPaused: widget.isPaused,
              onPauseToggle: widget.onPauseToggle,
              specialAnimation: widget.specialAnimation,
              weaponName: state.equipment.weapon,
              shieldName: state.equipment.shield,
              characterLevel: state.traits.level,
              monsterLevel: state.progress.currentTask.monsterLevel,
              monsterGrade: state.progress.currentTask.monsterGrade,
              latestCombatEvent:
                  state.progress.currentCombat?.recentEvents.lastOrNull,
              raceId: state.traits.raceId,
              weaponRarity: state.equipment.weaponItem.rarity,
            ),

            // 중앙: 캐로셀 (PageView)
            Expanded(
              child: PageView(
                controller: _pageController,
                onPageChanged: _onPageChanged,
                children: [
                  // 0: 스킬
                  SkillsPage(
                    skillBook: state.skillBook,
                    skillSystem: state.skillSystem,
                  ),

                  // 1: 인벤토리
                  InventoryPage(
                    inventory: state.inventory,
                    potionInventory: state.potionInventory,
                    encumbrance: state.progress.encumbrance,
                    usedPotionTypes:
                        state.progress.currentCombat?.usedPotionTypes ??
                        const {},
                  ),

                  // 2: 장비
                  EquipmentPage(equipment: state.equipment),

                  // 3: 캐릭터시트 (기본)
                  CharacterSheetPage(
                    traits: state.traits,
                    stats: state.stats,
                    exp: state.progress.exp,
                  ),

                  // 4: 전투로그
                  CombatLogPage(entries: widget.combatLogEntries),

                  // 5: 퀘스트
                  QuestPage(
                    questHistory: state.progress.questHistory,
                    quest: state.progress.quest,
                  ),

                  // 6: 스토리
                  StoryPage(
                    plotStageCount: state.progress.plotStageCount,
                    plot: state.progress.plot,
                  ),
                ],
              ),
            ),

            // 하단: 네비게이션 바
            CarouselNavBar(
              currentPage: _currentPage,
              onPageSelected: _onNavPageSelected,
            ),
          ],
        ),
      ),
    );
  }
}