playWith/packages/games/quiz/lib/quiz_game.dart

import 'dart:async';
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:playwith_core/playwith_core.dart';
import 'model/quiz_model.dart'; // QuizSet, QuizItem 모델 필요

// --- Enums ---
enum PlayerStatus { alive, dead, winner, loser }
enum GamePhase { voteRule, voteInput, playing, result }
enum InputMode { touch, voice }
enum GameRule { survival, suddenDeath, scoreAttack, relay }

class QuizGame extends BaseGame {
  @override
  String get id => "quiz_mix"; // main.dart 등록 ID와 일치해야 함
  @override
  String get name => "멀티 모드 퀴즈";
  @override
  String get description => "투표로 룰을 정하고 승리하세요!";

  // ------------------------------------------------------------------------
  // 상태 변수
  // ------------------------------------------------------------------------
  final _gameStateController = StreamController<Map<String, dynamic>>.broadcast();
  Stream<Map<String, dynamic>> get gameStateStream => _gameStateController.stream;
  Map<String, dynamic>? _lastState;

  // 진행 상태
  GamePhase _phase = GamePhase.voteRule;
  GameRule _selectedRule = GameRule.survival;
  InputMode _selectedInputMode = InputMode.touch;

  // 데이터
  final Set<String> _aliveUsers = {};
  final Set<String> _answeredUsers = {};
  final Map<String, int> _scores = {};
  final Map<String, String> _votes = {};
  
  // 릴레이 모드 전용
  List<String> _turnOrder = [];
  int _currentTurnIndex = 0;

  // 내 상태
  PlayerStatus _myStatus = PlayerStatus.alive;
  String? _mySelectedAnswer;
  bool _isLockedIn = false;
  Timer? _lockInTimer;

  // UI 상태
  bool _isCountingDown = false;
  int _countdownValue = 3;
  bool _isShowingResult = false;

  // 문제 데이터
  List<QuizItem> _questions = [];
  int _currentQuestionIndex = -1;

  // ------------------------------------------------------------------------
  // 라이프사이클
  // ------------------------------------------------------------------------
  @override
  void onStart() {
    super.onStart();
    print("Quiz Game Started!");
    _resetGame();
    
    // 문제 로드 (QuizModel이 없다면 하드코딩된 리스트 사용 가능)
    try {
      _questions = QuizSet.getDummy10();
    } catch (e) {
      // Fallback Dummy
      _questions = [
        QuizItem(type: QuizType.text, question: "사과는 영어로 Apple?", answer: "O", options: ["O", "X"]),
        QuizItem(type: QuizType.text, question: "바나나는 길어지면 기차?", answer: "X", options: ["O", "X"]),
      ];
    }

    // [Host] 1단계: 룰 투표 시작
    if (NetworkManager().role == NetworkRole.host) {
      Future.delayed(const Duration(milliseconds: 1000), () {
        _broadcastState({'type': 'PHASE_CHANGE', 'phase': 'VOTE_RULE'});
      });
    }
  }

  void _resetGame() {
    _phase = GamePhase.voteRule;
    _lastState = null;
    _aliveUsers.clear();
    _scores.clear();
    _votes.clear();
    _turnOrder.clear();
    _currentQuestionIndex = -1;
    _resetLocalState();

    final allUsers = [NetworkManager().me, ...NetworkManager().guestList];
    for (var u in allUsers) {
      _aliveUsers.add(u.id);
      _scores[u.id] = 0;
    }
    _myStatus = PlayerStatus.alive;
  }

  @override
  void onDispose() {
    _lockInTimer?.cancel();
    _gameStateController.close();
    super.onDispose();
  }

  // ------------------------------------------------------------------------
  // 메시지 처리 (Logic Hub)
  // ------------------------------------------------------------------------
  @override
  void onMessageReceived(String senderId, Map<String, dynamic> payload) {
    if (!['ANSWER_SUBMIT', 'VOTE_SUBMIT'].contains(payload['type'])) {
      _lastState = payload;
    }

    switch (payload['type']) {
      case 'PHASE_CHANGE': _handlePhaseChange(payload); break;
      case 'VOTE_SUBMIT': _handleVoteSubmit(payload); break;
      case 'GAME_COUNTDOWN': _handleCountdown(payload); break;
      case 'ANSWER_SUBMIT': _handleAnswerSubmit(payload); break;
      case 'PLAYER_STATUS_UPDATE': _handleStatusUpdate(payload); break;
      case 'PLAYER_ELIMINATED': _handleEliminated(payload); break;
      case 'ROUND_RESULT': _handleRoundResult(payload); break;
      case 'GAME_STATE_UPDATE': _handleNewQuestion(payload); break;
      case 'GAME_OVER': _handleGameOver(payload); break;
      case 'GAME_EXIT': _gameStateController.add(payload); break;
    }
  }

  // --- Handlers ---

  void _handlePhaseChange(Map<String, dynamic> payload) {
    final phaseStr = payload['phase'];
    if (phaseStr == 'VOTE_RULE') _phase = GamePhase.voteRule;
    else if (phaseStr == 'VOTE_INPUT') {
      _phase = GamePhase.voteInput;
      _selectedRule = GameRule.values.firstWhere((e) => e.name == payload['rule'], orElse: () => GameRule.survival);
    }
    else if (phaseStr == 'PLAYING') {
      _phase = GamePhase.playing;
      _selectedInputMode = payload['inputMode'] == 'voice' ? InputMode.voice : InputMode.touch;
      if (_selectedRule == GameRule.relay) {
        _turnOrder = List<String>.from(payload['turnOrder'] ?? []);
        _currentTurnIndex = 0;
      }
    }
    _gameStateController.add(payload);
    _votes.clear();
  }

  void _handleVoteSubmit(Map<String, dynamic> payload) {
    if (NetworkManager().role != NetworkRole.host) return;
    _votes[payload['userId']] = payload['vote'];

    // 전원 투표 완료 체크
    // (중간에 나간 사람 고려하여 aliveUsers 기준으로 체크하거나 타임아웃 필요. MVP는 단순 크기 비교)
    if (_votes.length >= _aliveUsers.length) {
      if (_phase == GamePhase.voteRule) _decideRule();
      else if (_phase == GamePhase.voteInput) _decideInputAndStart();
    }
  }

  void _handleCountdown(Map<String, dynamic> payload) {
    _isShowingResult = false;
    _isCountingDown = true;
    _countdownValue = payload['count'];
    if (_countdownValue > 0) SoundManager().playSfx(SoundKey.click);
    _gameStateController.add(payload);
  }

  void _handleAnswerSubmit(Map<String, dynamic> payload) {
    if (NetworkManager().role != NetworkRole.host) return;

    final String userId = payload['userId'];
    final String answer = payload['answer'];

    if (_answeredUsers.contains(userId)) return;
    if (_selectedRule == GameRule.relay && _turnOrder[_currentTurnIndex] != userId) return;

    _answeredUsers.add(userId);

    final currentQ = _questions[_currentQuestionIndex];
    bool isCorrect = false;
    if (_selectedInputMode == InputMode.voice) {
      isCorrect = VoiceManager().checkAnswer(answer, currentQ.answer);
    } else {
      isCorrect = (answer == currentQ.answer);
    }

    // 룰별 탈락 처리
    if (_selectedRule == GameRule.scoreAttack) {
      if (isCorrect) _scores[userId] = (_scores[userId] ?? 0) + 1;
    } else {
      if (!isCorrect) {
        _aliveUsers.remove(userId);
        NetworkManager().sendMessage({'type': 'PLAYER_ELIMINATED', 'targetUserId': userId});
        if (userId == NetworkManager().me.id) _handleLocalElimination();
        
        if (_selectedRule == GameRule.suddenDeath || _selectedRule == GameRule.relay) {
           _broadcastState({'type': 'PLAYER_STATUS_UPDATE', 'userId': userId, 'isSubmitted': true, 'isAlive': false});
           Future.delayed(const Duration(milliseconds: 1000), () => _finishGame(winnerId: null)); 
           return;
        }
      }
    }

    _broadcastState({
      'type': 'PLAYER_STATUS_UPDATE',
      'userId': userId,
      'isSubmitted': true,
      'isAlive': _aliveUsers.contains(userId),
      'score': _scores[userId]
    });

    // 다음 진행 판단
    bool shouldAdvance = false;
    if (_selectedRule == GameRule.relay) {
      shouldAdvance = true;
    } else {
      int targetCount = _selectedRule == GameRule.scoreAttack 
          ? NetworkManager().guestList.length + 1 
          : _aliveUsers.length + (isCorrect ? 0 : 1);
      if (_answeredUsers.length >= targetCount) shouldAdvance = true;
    }

    if (shouldAdvance) {
       Future.delayed(const Duration(milliseconds: 1000), () => _showRoundResultAndNext());
    }
  }

  void _handleStatusUpdate(Map<String, dynamic> payload) {
    _answeredUsers.add(payload['userId']);
    if (payload['isAlive'] == false) _aliveUsers.remove(payload['userId']);
    if (payload['score'] != null) _scores[payload['userId']] = payload['score'];
    _gameStateController.add(payload);
  }

  void _handleEliminated(Map<String, dynamic> payload) {
    if (payload['targetUserId'] == NetworkManager().me.id) _handleLocalElimination();
    _gameStateController.add({'type': 'UI_REFRESH'});
  }

  void _handleLocalElimination() {
    SoundManager().playSfx(SoundKey.wrong);
    _myStatus = PlayerStatus.dead;
  }

  void _handleRoundResult(Map<String, dynamic> payload) {
    _isCountingDown = false;
    _isShowingResult = true;
    if (_selectedRule == GameRule.relay) _currentTurnIndex = payload['nextTurnIndex'] ?? 0;

    final survivors = payload['survivors'] ?? [];
    bool amISurvived = survivors.contains(NetworkManager().me.id);
    
    if (!amISurvived && _myStatus == PlayerStatus.alive && _selectedRule != GameRule.scoreAttack) {
      _handleLocalElimination();
    }
    _gameStateController.add(payload);
  }

  void _handleNewQuestion(Map<String, dynamic> payload) {
    _isCountingDown = false;
    _isShowingResult = false;
    _resetLocalState();
    _gameStateController.add(payload);
  }

  void _handleGameOver(Map<String, dynamic> payload) {
    final winnerId = payload['winnerId'];
    if (winnerId == NetworkManager().me.id) {
       _myStatus = PlayerStatus.winner;
       SoundManager().playSfx(SoundKey.win);
    } else {
       _myStatus = PlayerStatus.loser;
       if (winnerId == 'ALL_LOSE') SoundManager().playSfx(SoundKey.wrong);
    }
    _gameStateController.add(payload);
  }

  // ------------------------------------------------------------------------
  // [Host Logic]
  // ------------------------------------------------------------------------
  void _decideRule() {
    final counts = <String, int>{};
    for (var v in _votes.values) { counts[v] = (counts[v] ?? 0) + 1; }
    String topRule = counts.entries.reduce((a, b) => a.value >= b.value ? a : b).key;
    
    _selectedRule = GameRule.values.firstWhere((e) => e.name == topRule, orElse: () => GameRule.survival);
    
    _broadcastState({
      'type': 'PHASE_CHANGE', 
      'phase': 'VOTE_INPUT',
      'rule': _selectedRule.name
    });
  }

  void _decideInputAndStart() {
    int touch = _votes.values.where((v) => v == 'touch').length;
    int voice = _votes.values.where((v) => v == 'voice').length;
    InputMode mode = (touch >= voice) ? InputMode.touch : InputMode.voice;

    List<String>? turnOrder;
    if (_selectedRule == GameRule.relay) {
      turnOrder = _aliveUsers.toList()..shuffle();
    }

    _broadcastState({
      'type': 'PHASE_CHANGE',
      'phase': 'PLAYING',
      'inputMode': mode.name,
      'turnOrder': turnOrder
    });
    
    _selectedInputMode = mode;
    _turnOrder = turnOrder ?? [];
    _phase = GamePhase.playing;

    Future.delayed(const Duration(seconds: 2), () => _startCountdownSequence());
  }

  void _showRoundResultAndNext() {
    final currentQ = _questions[_currentQuestionIndex];
    int nextTurn = _currentTurnIndex;
    if (_selectedRule == GameRule.relay) {
      nextTurn = (_currentTurnIndex + 1) % _aliveUsers.length;
    }

    _broadcastState({
      'type': 'ROUND_RESULT',
      'status': 'RESULT',
      'correctAnswer': currentQ.answer,
      'survivors': _aliveUsers.toList(),
      'scores': _scores,
      'nextTurnIndex': nextTurn
    });

    _currentTurnIndex = nextTurn;

    Future.delayed(const Duration(seconds: 3), () => _checkWinnerAndNext());
  }

  void _checkWinnerAndNext() {
    int totalPlayers = NetworkManager().guestList.length + 1;
    bool isEnd = false;
    String? winnerId;

    if (_currentQuestionIndex >= _questions.length - 1) {
      isEnd = true;
      if (_selectedRule == GameRule.scoreAttack) {
        if (_scores.isNotEmpty) {
           winnerId = _scores.entries.reduce((a, b) => a.value >= b.value ? a : b).key;
        }
      } else {
        winnerId = _aliveUsers.isNotEmpty ? _aliveUsers.first : null; 
      }
    } 
    else if (_selectedRule != GameRule.scoreAttack && _aliveUsers.length <= 1) {
      if (_aliveUsers.isNotEmpty) {
        isEnd = true;
        winnerId = _aliveUsers.first;
      } else {
        isEnd = true;
        winnerId = null;
      }
    }

    if (isEnd) {
      _finishGame(winnerId: winnerId);
    } else {
      _startCountdownSequence();
    }
  }

  void _startCountdownSequence() {
    int count = 3;
    Timer.periodic(const Duration(seconds: 1), (timer) {
      _broadcastState({'type': 'GAME_COUNTDOWN', 'count': count});
      if (count == 0) {
        timer.cancel();
        _sendNewQuestion(); 
      }
      count--;
    });
  }

  void _sendNewQuestion() {
    _currentQuestionIndex++;
    final qData = _questions[_currentQuestionIndex];
    _resetLocalState();
    _broadcastState({'type': 'GAME_STATE_UPDATE', 'status': 'QUESTION', 'data': qData.toJson()});
  }

  void _finishGame({String? winnerId}) {
    final endData = {
      'type': 'GAME_OVER', 
      'winnerId': winnerId ?? 'NONE',
      'winnerName': _findUserName(winnerId)
    };
    _broadcastState(endData);
  }

  void _broadcastState(Map<String, dynamic> data) {
    _lastState = data;
    _gameStateController.add(data);
    if (NetworkManager().role == NetworkRole.host) NetworkManager().sendMessage(data);
  }

  void _resetLocalState() {
    _answeredUsers.clear();
    _mySelectedAnswer = null;
    _isLockedIn = false;
    _lockInTimer?.cancel();
  }

  String _findUserName(String? id) {
    if (id == null) return '없음';
    if (id == NetworkManager().me.id) return NetworkManager().me.nickname;
    return NetworkManager().guestList.firstWhere((u) => u.id == id, orElse: () => UserInfo(id: '', nickname: 'Unknown')).nickname;
  }

  // ------------------------------------------------------------------------
  // [UI]
  // ------------------------------------------------------------------------
  @override
  Widget buildHostView(BuildContext context) => _buildScreen(context, true);
  @override
  Widget buildGuestView(BuildContext context) => _buildScreen(context, false);

  Widget _buildScreen(BuildContext context, bool isHost) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("PlayWith 퀴즈"),
        centerTitle: true,
        automaticallyImplyLeading: false,
        actions: [
          if (isHost) IconButton(icon: const Icon(Icons.close), onPressed: () => _confirmExit(context))
        ],
      ),
      body: Padding(
        padding: const EdgeInsets.only(bottom: 140.0), 
        child: StreamBuilder<Map<String, dynamic>>(
          stream: gameStateStream,
          initialData: _lastState,
          builder: (context, snapshot) {
            if (!snapshot.hasData) return _buildWaitingScreen("로딩 중...");
            final data = snapshot.data!;

            if (_phase == GamePhase.voteRule || (data['type'] == 'PHASE_CHANGE' && data['phase'] == 'VOTING')) return _buildRuleVotingView(context);
            if (_phase == GamePhase.voteInput || (data['type'] == 'PHASE_CHANGE' && data['phase'] == 'VOTE_INPUT')) return _buildInputVotingView(context);
            
            if (_isCountingDown || (data['type'] == 'GAME_COUNTDOWN')) {
               int count = data['count'] ?? 3;
               return Center(child: Text(count > 0 ? "$count" : "START!", style: const TextStyle(fontSize: 90, fontWeight: FontWeight.bold, color: Colors.blue)));
            }

            if (data['type'] == 'GAME_EXIT') {
               WidgetsBinding.instance.addPostFrameCallback((_) { if(context.mounted) Navigator.pop(context); });
               return const Center(child: Text("종료되었습니다."));
            }
            if (data['type'] == 'GAME_OVER') return _buildResultScreen(context, data['winnerName']);
            
            if (_isShowingResult || data['status'] == 'RESULT') return _buildRoundResultScreen(data);

            if (data['status'] == 'QUESTION' || _currentQuestionIndex >= 0) {
               Map<String, dynamic> qData = data['data'] ?? _questions[_currentQuestionIndex].toJson();
               return _buildPlayArea(context, qData);
            }

            return _buildWaitingScreen("준비 중...");
          },
        ),
      ),
    );
  }

  // --- UI Parts ---

  Widget _buildRuleVotingView(BuildContext context) {
    if (_votes.containsKey(NetworkManager().me.id)) return _buildWaitingScreen("룰 투표 완료! 대기 중...");
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          const Text("어떤 게임을 할까요?", style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold)),
          const SizedBox(height: 30),
          Wrap(
            spacing: 15, runSpacing: 15, alignment: WrapAlignment.center,
            children: [
              _VoteButton(icon: Icons.local_fire_department, label: "서바이벌", color: Colors.red, onTap: () => _submitVote('survival')),
              _VoteButton(icon: Icons.dangerous, label: "단체 한방", color: Colors.black, onTap: () => _submitVote('suddenDeath')),
              _VoteButton(icon: Icons.score, label: "점수 내기", color: Colors.blue, onTap: () => _submitVote('scoreAttack')),
              _VoteButton(icon: Icons.directions_run, label: "이어 달리기", color: Colors.green, onTap: () => _submitVote('relay')),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildInputVotingView(BuildContext context) {
    if (_votes.containsKey(NetworkManager().me.id)) return _buildWaitingScreen("입력 방식 투표 완료! 대기 중...");
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          const Text("어떻게 맞출까요?", style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold)),
          const SizedBox(height: 30),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: [
              _VoteButton(icon: Icons.touch_app, label: "터치", color: Colors.blue, onTap: () => _submitVote('touch')),
              _VoteButton(icon: Icons.mic, label: "음성", color: Colors.orange, onTap: () => _submitVote('voice')),
            ],
          ),
        ],
      ),
    );
  }

  void _submitVote(String vote) {
    _votes[NetworkManager().me.id] = vote;
    _gameStateController.add({'type': 'UI_REFRESH'}); 
    final payload = {'type': 'VOTE_SUBMIT', 'userId': NetworkManager().me.id, 'vote': vote};
    if (NetworkManager().role == NetworkRole.host) onMessageReceived("", payload);
    else NetworkManager().sendMessage(payload);
  }

  Widget _buildPlayArea(BuildContext context, Map<String, dynamic> qData) {
    bool isMyTurn = true;
    String currentTurnName = "";
    if (_selectedRule == GameRule.relay) {
      String currentUserId = _turnOrder.isNotEmpty ? _turnOrder[_currentTurnIndex] : "";
      isMyTurn = currentUserId == NetworkManager().me.id;
      currentTurnName = _findUserName(currentUserId);
    }

    if (_myStatus == PlayerStatus.dead && _selectedRule != GameRule.scoreAttack) {
       return Center(child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [const Icon(Icons.sentiment_dissatisfied, size: 70, color: Colors.grey), const SizedBox(height: 10), const Text("탈락했습니다 👻", style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold)), const SizedBox(height: 20), Text("문제: ${qData['question']}", style: const TextStyle(color: Colors.grey))]));
    }

    return Column(
      children: [
        Container(
          padding: const EdgeInsets.all(10),
          color: Colors.grey[100],
          child: _selectedRule == GameRule.scoreAttack 
              ? _ScoreBoard(scores: _scores) 
              : _PlayerStatusGrid(aliveUsers: _aliveUsers, answeredUsers: _answeredUsers),
        ),
        
        if (_selectedRule == GameRule.relay)
          Container(
            width: double.infinity,
            padding: const EdgeInsets.all(8),
            color: isMyTurn ? Colors.blueAccent : Colors.grey[300],
            child: Text(isMyTurn ? "내 차례입니다!" : "$currentTurnName님의 차례", textAlign: TextAlign.center, style: TextStyle(color: isMyTurn ? Colors.white : Colors.black, fontWeight: FontWeight.bold)),
          ),

        const Divider(height: 1),
        
        Expanded(
          flex: 4,
          child: Center(child: Padding(padding: const EdgeInsets.all(20), child: Text(qData['question'], textAlign: TextAlign.center, style: const TextStyle(fontSize: 28, fontWeight: FontWeight.bold)))),
        ),

        Expanded(
          flex: 3,
          child: !isMyTurn 
              ? const Center(child: Text("다른 사람이 푸는 중...", style: TextStyle(fontSize: 18, color: Colors.grey)))
              : (_selectedInputMode == InputMode.touch 
                  ? _buildTouchInput(qData['options'] != null ? List<String>.from(qData['options']) : ["O", "X"])
                  : _buildVoiceInput()),
        ),
      ],
    );
  }

  Widget _buildTouchInput(List<String> options) {
    if (_isLockedIn) return _buildLockedUI();
    return Center(child: Wrap(spacing: 20, runSpacing: 20, alignment: WrapAlignment.center, children: options.map((opt) => _AnswerBtn(text: opt, color: Colors.blueAccent, isSelected: _mySelectedAnswer == opt, onTap: () => _selectAnswer(opt))).toList()));
  }

  Widget _buildVoiceInput() {
    if (_isLockedIn) return _buildLockedUI();
    return Column(mainAxisAlignment: MainAxisAlignment.center, children: [VoiceWidget(isListening: VoiceManager().isListening), const SizedBox(height: 20), GestureDetector(onLongPressStart: (_) async { await VoiceManager().startListening(onResult: (text) {}); }, onLongPressEnd: (_) async { await VoiceManager().stopListening(); _selectAnswer("O"); }, child: Container(padding: const EdgeInsets.all(20), decoration: const BoxDecoration(color: Colors.redAccent, shape: BoxShape.circle), child: const Icon(Icons.mic, size: 40, color: Colors.white))), const SizedBox(height: 10), const Text("버튼을 누르고 정답을 말하세요!", style: TextStyle(color: Colors.grey))]);
  }

  Widget _buildLockedUI() {
    return Center(child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [Icon(Icons.check, size: 80, color: Colors.blue), const SizedBox(height: 20), const Text("제출 완료!", style: TextStyle(fontSize: 22))]));
  }

  Widget _buildRoundResultScreen(Map<String, dynamic> data) {
    final String correctAnswer = data['correctAnswer'] ?? "?";
    final List<dynamic> survivors = data['survivors'] ?? [];
    final bool amISurvived = survivors.contains(NetworkManager().me.id);

    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          const Text("정답은?", style: TextStyle(fontSize: 24, color: Colors.grey)),
          const SizedBox(height: 20),
          Container(
            width: 160, height: 160,
            decoration: BoxDecoration(color: correctAnswer == "O" ? Colors.blue : Colors.red, shape: BoxShape.circle, boxShadow: [BoxShadow(color: Colors.black26, blurRadius: 10, offset: const Offset(0, 5))]),
            child: Center(child: Text(correctAnswer, style: const TextStyle(fontSize: 80, color: Colors.white, fontWeight: FontWeight.bold))),
          ),
          const SizedBox(height: 40),
          if (_myStatus == PlayerStatus.dead) const Text("이미 탈락하셨습니다. 👻", style: TextStyle(fontSize: 20, color: Colors.grey))
          else if (amISurvived) const Text("생존! 🎉", style: TextStyle(fontSize: 28, fontWeight: FontWeight.bold, color: Colors.green))
          else const Text("탈락했습니다... 😭", style: TextStyle(fontSize: 28, fontWeight: FontWeight.bold, color: Colors.red)),
        ],
      ),
    );
  }

  // Helper methods
  void _selectAnswer(String answer) {
    _lockInTimer?.cancel();
    _mySelectedAnswer = answer;
    SoundManager().playSfx(SoundKey.click);
    _gameStateController.add({'type': 'UI_REFRESH'}); 
    _lockInTimer = Timer(const Duration(seconds: 3), () { _submitFinalAnswer(); });
  }
  
  void _submitFinalAnswer() {
    if (_mySelectedAnswer == null) return;
    _isLockedIn = true;
    _gameStateController.add({'type': 'UI_REFRESH'}); 
    final payload = {'type': 'ANSWER_SUBMIT', 'answer': _mySelectedAnswer, 'userId': NetworkManager().me.id};
    if (NetworkManager().role == NetworkRole.host) { onMessageReceived("", payload); } else { NetworkManager().sendMessage(payload); }
  }
  
  Widget _buildResultScreen(BuildContext context, String winnerName) {
    return Center(child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [Icon(Icons.emoji_events, size: 100, color: Colors.amber), const SizedBox(height: 20), const Text("게임 종료", style: TextStyle(fontSize: 30, fontWeight: FontWeight.bold)), const SizedBox(height: 10), Text("우승: $winnerName", style: const TextStyle(fontSize: 20)), const SizedBox(height: 50), ElevatedButton(onPressed: () { onDispose(); Navigator.pop(context); }, child: const Text("로비로 돌아가기"))]));
  }
  
  Widget _buildWaitingScreen(String msg) => Center(child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [const CircularProgressIndicator(), SizedBox(height: 20), Text(msg)]));
  
  void _confirmExit(BuildContext context) {
    showDialog(context: context, builder: (ctx) => AlertDialog(title: const Text("종료"), content: const Text("방을 폭파하시겠습니까?"), actions: [TextButton(onPressed: ()=>Navigator.pop(ctx), child: const Text("취소")), TextButton(onPressed: () { Navigator.pop(ctx); NetworkManager().sendMessage({'type': 'GAME_EXIT'}); onDispose(); Navigator.pop(context); }, child: const Text("종료", style: TextStyle(color: Colors.red)))]));
  }
}

// [Components]
class _ScoreBoard extends StatelessWidget {
  final Map<String, int> scores;
  const _ScoreBoard({required this.scores});
  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: 60,
      child: ListView.builder(
        scrollDirection: Axis.horizontal,
        itemCount: scores.length,
        itemBuilder: (context, index) {
          final uid = scores.keys.elementAt(index);
          final score = scores[uid];
          String name = "?";
          if (uid == NetworkManager().me.id) name = NetworkManager().me.nickname;
          else { try { name = NetworkManager().guestList.firstWhere((u) => u.id == uid).nickname; } catch(_) {} }
          return Container(margin: const EdgeInsets.symmetric(horizontal: 8), padding: const EdgeInsets.all(8), decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(10), border: Border.all(color: Colors.blue.shade100)), child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [Text(name, style: const TextStyle(fontSize: 10)), Text("$score점", style: const TextStyle(fontWeight: FontWeight.bold, color: Colors.blue))]));
        },
      ),
    );
  }
}

class _PlayerStatusGrid extends StatelessWidget {
  final Set<String> aliveUsers; final Set<String> answeredUsers;
  const _PlayerStatusGrid({required this.aliveUsers, required this.answeredUsers});
  @override
  Widget build(BuildContext context) {
    final allUsers = [NetworkManager().me, ...NetworkManager().guestList];
    return Container(height: 80, width: double.infinity, padding: const EdgeInsets.symmetric(horizontal: 10), color: Colors.grey[50], child: ListView.builder(scrollDirection: Axis.horizontal, itemCount: allUsers.length, itemBuilder: (context, index) { final user = allUsers[index]; final isAlive = aliveUsers.contains(user.id); final isSubmitted = answeredUsers.contains(user.id); return Padding(padding: const EdgeInsets.symmetric(horizontal: 6.0), child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [Stack(children: [Container(width: 40, height: 40, decoration: BoxDecoration(shape: BoxShape.circle, color: isAlive ? Color(user.colorValue) : Colors.grey, border: isSubmitted ? Border.all(color: Colors.green, width: 3) : null), child: AvatarWidget(user: user, size: 40)), if (!isAlive) Positioned.fill(child: Container(decoration: BoxDecoration(color: Colors.black54, shape: BoxShape.circle), child: const Icon(Icons.close, size: 20, color: Colors.white)))]), const SizedBox(height: 4), Text(user.nickname, style: TextStyle(fontSize: 10, color: isAlive ? Colors.black : Colors.grey))])); }));
  }
}

class _VoteButton extends StatelessWidget {
  final IconData icon; final String label; final Color color; final VoidCallback onTap;
  const _VoteButton({required this.icon, required this.label, required this.color, required this.onTap});
  @override
  Widget build(BuildContext context) {
    return GestureDetector(onTap: onTap, child: Column(children: [Container(width: 80, height: 80, decoration: BoxDecoration(color: color.withOpacity(0.1), borderRadius: BorderRadius.circular(20), border: Border.all(color: color, width: 2)), child: Icon(icon, size: 40, color: color)), const SizedBox(height: 5), Text(label, style: TextStyle(fontSize: 14, fontWeight: FontWeight.bold, color: color))]));
  }
}

class _AnswerBtn extends StatelessWidget {
  final String text; final Color color; final bool isSelected; final VoidCallback onTap;
  const _AnswerBtn({required this.text, required this.color, required this.isSelected, required this.onTap});
  @override
  Widget build(BuildContext context) {
    return GestureDetector(onTap: onTap, child: AnimatedContainer(duration: const Duration(milliseconds: 200), width: isSelected ? 140 : 120, height: isSelected ? 140 : 120, decoration: BoxDecoration(color: color.withOpacity(isSelected ? 1.0 : 0.6), shape: BoxShape.circle, border: isSelected ? Border.all(color: Colors.white, width: 5) : null, boxShadow: [BoxShadow(color: color.withOpacity(0.4), blurRadius: 10, offset: const Offset(0, 6))]), child: Center(child: Text(text, style: const TextStyle(fontSize: 30, color: Colors.white, fontWeight: FontWeight.bold)))));
  }
}