import 'dart:async';

import 'package:flame/game.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:go_router/go_router.dart';

import '../../../../core/network/ws_client.dart';
import '../../../../core/theme/app_theme.dart';
import '../../../wallet/presentation/bloc/wallet_bloc.dart';
import '../../../wallet/presentation/bloc/wallet_event.dart';
import '../../domain/entities/game_entities.dart';
import '../bloc/game_bloc.dart';
import '../bloc/game_state.dart';
import '../widgets/flame/hokm_game.dart';

/// صفحه‌ی میز بازی: صحنه‌ی Flame + اوورلی‌های وضعیت.
class GameScreen extends StatefulWidget {
  final int prize;
  const GameScreen({super.key, this.prize = 0});

  @override
  State<GameScreen> createState() => _GameScreenState();
}

class _GameScreenState extends State<GameScreen> {
  late final HokmGame _game;
  Timer? _introTimer;
  bool _introHidden = false;

  @override
  void initState() {
    super.initState();
    _game = HokmGame(context.read<GameBloc>());
  }

  @override
  void dispose() {
    _introTimer?.cancel();
    super.dispose();
  }

  bool _showSearch(GameUiState s) => s.state == null || !_introHidden;

  @override
  Widget build(BuildContext context) {
    return PopScope(
      canPop: false,
      onPopInvokedWithResult: (didPop, _) {
        if (!didPop) _confirmLeave(context);
      },
      child: Scaffold(
        body: BlocConsumer<GameBloc, GameUiState>(
          listenWhen: (a, b) => a.notice != b.notice && b.notice != null,
          listener: (context, state) {
            ScaffoldMessenger.of(context).showSnackBar(
              SnackBar(
                  content: Text(state.notice!),
                  duration: const Duration(seconds: 2)),
            );
            context.read<GameBloc>().clearNotice();
          },
          builder: (context, state) {
            if (state.state != null && _introTimer == null) {
              _introTimer = Timer(const Duration(milliseconds: 1600), () {
                if (mounted) setState(() => _introHidden = true);
              });
            }
            return Stack(
              children: [
                GameWidget(game: _game),
                _backButton(context),
                if (state.connection == WsStatus.disconnected) _connBanner(),
                if (_showSearch(state)) _searchPanel(state),
                if (!_showSearch(state) && _showTrumpPicker(state))
                  _trumpPicker(context),
                if (state.handResult != null && state.gameOver == null)
                  _handResult(state),
                if (state.gameOver != null) _gameOver(context, state),
              ],
            );
          },
        ),
      ),
    );
  }

  bool _showTrumpPicker(GameUiState s) =>
      s.state != null &&
      s.state!.phase == 'choose_trump' &&
      s.state!.amHakem &&
      s.gameOver == null;

  Widget _backButton(BuildContext context) => Positioned(
        top: 8,
        right: 8,
        child: SafeArea(
          child: IconButton(
            icon: const Icon(Icons.arrow_back, color: AppColors.gold),
            onPressed: () => _confirmLeave(context),
          ),
        ),
      );

  Future<void> _confirmLeave(BuildContext context) async {
    if (context.read<GameBloc>().state.gameOver != null) {
      _exitToLobby(context);
      return;
    }
    final yes = await showDialog<bool>(
      context: context,
      builder: (_) => AlertDialog(
        backgroundColor: AppColors.panel,
        title: const Text('خروج از میز'),
        content: const Text('از میز خارج می‌شوید؟ ورودی بازگردانده نمی‌شود.'),
        actions: [
          TextButton(
              onPressed: () => Navigator.pop(context, false),
              child: const Text('ماندن')),
          TextButton(
              onPressed: () => Navigator.pop(context, true),
              child: const Text('خروج')),
        ],
      ),
    );
    if (yes == true && context.mounted) {
      context.read<GameBloc>().leave();
      _exitToLobby(context);
    }
  }

  void _exitToLobby(BuildContext context) {
    context.read<WalletBloc>().add(LoadWalletEvent());
    context.go('/lobby');
  }

  Widget _connBanner() => Positioned(
        top: 0,
        left: 0,
        right: 0,
        child: Material(
          color: Colors.orange.shade900,
          child: const SafeArea(
            bottom: false,
            child: Padding(
              padding: EdgeInsets.all(8),
              child: Text('ارتباط با سرور قطع شد، در حال تلاش برای اتصال مجدد…',
                  textAlign: TextAlign.center,
                  style: TextStyle(color: Colors.white)),
            ),
          ),
        ),
      );

  Widget _searchPanel(GameUiState state) {
    final players = state.state?.players ?? const <GamePlayer>[];
    final mySeat = state.state?.yourSeat ?? -1;
    final searching = state.state == null;
    GamePlayer? at(int seat) {
      for (final p in players) {
        if (p.seat == seat) return p;
      }
      return null;
    }

    return Container(
      color: Colors.black.withValues(alpha: 0.78),
      alignment: Alignment.center,
      child: Container(
        margin: const EdgeInsets.symmetric(horizontal: 20),
        padding: const EdgeInsets.fromLTRB(16, 14, 16, 18),
        decoration: BoxDecoration(
          color: AppColors.panel,
          borderRadius: BorderRadius.circular(20),
          border: Border.all(color: AppColors.gold, width: 2.5),
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            const Text('جستجوی حریف',
                style: TextStyle(
                    color: AppColors.gold,
                    fontSize: 22,
                    fontWeight: FontWeight.bold)),
            const SizedBox(height: 18),
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                for (var seat = 0; seat < 4; seat++)
                  _searchSlot(at(seat), seat == mySeat),
              ],
            ),
            const SizedBox(height: 18),
            Container(
              padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 8),
              decoration: BoxDecoration(
                color: AppColors.bgDark,
                borderRadius: BorderRadius.circular(24),
                border: Border.all(color: AppColors.goldDark),
              ),
              child: Row(mainAxisSize: MainAxisSize.min, children: [
                const Icon(Icons.monetization_on, color: AppColors.gold),
                const SizedBox(width: 8),
                Text('${widget.prize}',
                    style: const TextStyle(
                        color: AppColors.gold,
                        fontSize: 18,
                        fontWeight: FontWeight.bold)),
              ]),
            ),
            if (searching) ...[
              const SizedBox(height: 16),
              const SizedBox(
                height: 22,
                width: 22,
                child: CircularProgressIndicator(
                    strokeWidth: 2, color: AppColors.gold),
              ),
            ],
          ],
        ),
      ),
    );
  }

  Widget _searchSlot(GamePlayer? p, bool isYou) {
    final found = p != null;
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 6),
      child: Column(mainAxisSize: MainAxisSize.min, children: [
        Text(found ? p.name : '...',
            maxLines: 1,
            overflow: TextOverflow.ellipsis,
            style: TextStyle(
                color: isYou ? AppColors.gold : Colors.white70, fontSize: 12)),
        const SizedBox(height: 4),
        Container(
          width: 58,
          height: 58,
          decoration: BoxDecoration(
            color: AppColors.bgDark,
            borderRadius: BorderRadius.circular(10),
            border: Border.all(
                color: isYou ? AppColors.gold : AppColors.goldDark, width: 1.5),
          ),
          child: Icon(
            found
                ? (p.bot ? Icons.smart_toy : Icons.person)
                : Icons.help_outline,
            color: found ? AppColors.gold : Colors.white24,
            size: 30,
          ),
        ),
        const SizedBox(height: 2),
        Text(found ? (p.bot ? 'ربات' : (isYou ? 'شما' : 'حریف')) : '',
            style: const TextStyle(color: Colors.white38, fontSize: 10)),
      ]),
    );
  }

  Widget _trumpPicker(BuildContext context) {
    const suits = [
      ('spades', '♠', 'پیک', Colors.white),
      ('hearts', '♥', 'دل', Color(0xFFD32F2F)),
      ('diamonds', '♦', 'خشت', Color(0xFFD32F2F)),
      ('clubs', '♣', 'گشنیز', Colors.white),
    ];
    return Container(
      color: Colors.black54,
      alignment: Alignment.center,
      child: Container(
        margin: const EdgeInsets.all(24),
        padding: const EdgeInsets.all(20),
        decoration: BoxDecoration(
          color: AppColors.panel,
          borderRadius: BorderRadius.circular(16),
          border: Border.all(color: AppColors.gold, width: 2),
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            const Text('حکم را انتخاب کن',
                style: TextStyle(color: AppColors.gold, fontSize: 20)),
            const SizedBox(height: 16),
            Wrap(
              spacing: 12,
              runSpacing: 12,
              alignment: WrapAlignment.center,
              children: [
                for (final (id, sym, name, color) in suits)
                  ElevatedButton(
                    style: ElevatedButton.styleFrom(
                      backgroundColor: AppColors.bgDark,
                      minimumSize: const Size(120, 64),
                    ),
                    onPressed: () => context.read<GameBloc>().chooseTrump(id),
                    child: Row(mainAxisSize: MainAxisSize.min, children: [
                      Text(sym, style: TextStyle(fontSize: 26, color: color)),
                      const SizedBox(width: 8),
                      Text(name, style: const TextStyle(color: AppColors.text)),
                    ]),
                  ),
              ],
            ),
          ],
        ),
      ),
    );
  }

  Widget _handResult(GameUiState s) {
    final r = s.handResult!;
    final mySeat = s.state?.yourSeat ?? 0;
    final myTeam = mySeat % 2;
    final won = r.winnerTeam == myTeam;
    return IgnorePointer(
      child: Center(
        child: Container(
          padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 18),
          decoration: BoxDecoration(
            color: Colors.black87,
            borderRadius: BorderRadius.circular(16),
            border: Border.all(color: AppColors.gold),
          ),
          child: Column(mainAxisSize: MainAxisSize.min, children: [
            Text(won ? 'این دست را بردید!' : 'این دست را باختید',
                style: TextStyle(
                    color: won ? AppColors.green : Colors.redAccent,
                    fontSize: 20,
                    fontWeight: FontWeight.bold)),
            if (r.kot)
              Padding(
                padding: const EdgeInsets.only(top: 6),
                child: Text(
                    r.hakemKot
                        ? 'حاکم‌کُت! (${r.points} امتیاز)'
                        : 'کُت! (${r.points} امتیاز)',
                    style: const TextStyle(color: AppColors.gold)),
              ),
            const SizedBox(height: 6),
            Text(
                'امتیاز: ${r.scores.isNotEmpty ? r.scores[0] : 0} - ${r.scores.length > 1 ? r.scores[1] : 0}',
                style: const TextStyle(color: Colors.white70)),
          ]),
        ),
      ),
    );
  }

  Widget _gameOver(BuildContext context, GameUiState s) {
    final g = s.gameOver!;
    final mySeat = s.state?.yourSeat ?? 0;
    final won = g.winnerTeam == mySeat % 2;
    return Container(
      color: Colors.black87,
      alignment: Alignment.center,
      child: Column(mainAxisSize: MainAxisSize.min, children: [
        Text(won ? 'بردید! 🎉' : 'باختید',
            style: TextStyle(
                color: won ? AppColors.gold : Colors.redAccent,
                fontSize: 32,
                fontWeight: FontWeight.bold)),
        const SizedBox(height: 12),
        Text(
            'نتیجه نهایی: ${g.scores.isNotEmpty ? g.scores[0] : 0} - ${g.scores.length > 1 ? g.scores[1] : 0}',
            style: const TextStyle(color: Colors.white70, fontSize: 18)),
        const SizedBox(height: 28),
        SizedBox(
          width: 220,
          child: ElevatedButton(
            onPressed: () => _exitToLobby(context),
            child: const Text('بازگشت به لابی'),
          ),
        ),
      ]),
    );
  }
}