import 'package:flutter/material.dart';
import 'package:playmaker/pages/PlacarPage.dart'; 
import '../controllers/game_controller.dart';
import '../controllers/team_controller.dart';
import '../models/game_model.dart';
import 'dart:math' as math; 

// --- CARD DE EXIBIÇÃO DO JOGO ---
class GameResultCard extends StatelessWidget {
  final String gameId;
  final String myTeam, opponentTeam, myScore, opponentScore, status, season;
  final String? myTeamLogo;       
  final String? opponentTeamLogo; 
  final double sf; 

  const GameResultCard({
    super.key,
    required this.gameId,
    required this.myTeam,
    required this.opponentTeam,
    required this.myScore,
    required this.opponentScore,
    required this.status,
    required this.season,
    this.myTeamLogo,      
    this.opponentTeamLogo, 
    required this.sf, 
  });

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: EdgeInsets.only(bottom: 16 * sf),
      padding: EdgeInsets.all(16 * sf),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(20 * sf),
        boxShadow: [BoxShadow(color: Colors.black12, blurRadius: 10 * sf)],
      ),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Expanded(child: _buildTeamInfo(myTeam, const Color(0xFFE74C3C), myTeamLogo, sf)),
          _buildScoreCenter(context, gameId, sf),
          Expanded(child: _buildTeamInfo(opponentTeam, Colors.black87, opponentTeamLogo, sf)),
        ],
      ),
    );
  }

  Widget _buildTeamInfo(String name, Color color, String? logoUrl, double sf) {
    return Column(
      children: [
        CircleAvatar(
          radius: 24 * sf, 
          backgroundColor: color,
          backgroundImage: (logoUrl != null && logoUrl.isNotEmpty) ? NetworkImage(logoUrl) : null,
          child: (logoUrl == null || logoUrl.isEmpty) ? Icon(Icons.shield, color: Colors.white, size: 24 * sf) : null,
        ),
        SizedBox(height: 6 * sf),
        Text(name, 
          style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13 * sf),
          textAlign: TextAlign.center, overflow: TextOverflow.ellipsis, maxLines: 2, 
        ),
      ],
    );
  }

  Widget _buildScoreCenter(BuildContext context, String id, double sf) {
    return Column(
      children: [
        Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            _scoreBox(myScore, Colors.green, sf),
            Text(" : ", style: TextStyle(fontWeight: FontWeight.bold, fontSize: 22 * sf)),
            _scoreBox(opponentScore, Colors.grey, sf),
          ],
        ),
        SizedBox(height: 10 * sf),
        TextButton.icon(
          onPressed: () {
            Navigator.push(context, MaterialPageRoute(builder: (context) => PlacarPage(gameId: id, myTeam: myTeam, opponentTeam: opponentTeam)));
          },
          icon: Icon(Icons.play_circle_fill, size: 18 * sf, color: const Color(0xFFE74C3C)),
          label: Text("RETORNAR", style: TextStyle(fontSize: 11 * sf, color: const Color(0xFFE74C3C), fontWeight: FontWeight.bold)),
          style: TextButton.styleFrom(
            backgroundColor: const Color(0xFFE74C3C).withOpacity(0.1),
            padding: EdgeInsets.symmetric(horizontal: 14 * sf, vertical: 8 * sf),
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20 * sf)),
            visualDensity: VisualDensity.compact,
          ),
        ),
        SizedBox(height: 6 * sf),
        Text(status, style: TextStyle(fontSize: 12 * sf, color: Colors.blue, fontWeight: FontWeight.bold)),
      ],
    );
  }

  Widget _scoreBox(String pts, Color c, double sf) => Container(
    padding: EdgeInsets.symmetric(horizontal: 12 * sf, vertical: 6 * sf),
    decoration: BoxDecoration(color: c, borderRadius: BorderRadius.circular(8 * sf)),
    child: Text(pts, style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 16 * sf)),
  );
}

// --- POPUP DE CRIAÇÃO ---
class CreateGameDialogManual extends StatefulWidget {
  final TeamController teamController;
  final GameController gameController; 
  final double sf; 

  const CreateGameDialogManual({super.key, required this.teamController, required this.gameController, required this.sf});

  @override
  State<CreateGameDialogManual> createState() => _CreateGameDialogManualState();
}

class _CreateGameDialogManualState extends State<CreateGameDialogManual> {
  late TextEditingController _seasonController;
  final TextEditingController _myTeamController = TextEditingController();
  final TextEditingController _opponentController = TextEditingController();
  bool _isLoading = false; 

  @override
  void initState() {
    super.initState();
    _seasonController = TextEditingController(text: _calculateSeason());
  }

  String _calculateSeason() {
    final now = DateTime.now();
    return now.month >= 7 ? "${now.year}/${(now.year + 1).toString().substring(2)}" : "${now.year - 1}/${now.year.toString().substring(2)}";
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20 * widget.sf)),
      title: Text('Configurar Partida', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18 * widget.sf)),
      content: SingleChildScrollView(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            TextField(
              controller: _seasonController, style: TextStyle(fontSize: 14 * widget.sf),
              decoration: InputDecoration(labelText: 'Temporada', labelStyle: TextStyle(fontSize: 14 * widget.sf), border: const OutlineInputBorder(), prefixIcon: Icon(Icons.calendar_today, size: 20 * widget.sf)),
            ),
            SizedBox(height: 15 * widget.sf),
            _buildSearch(label: "Minha Equipa", controller: _myTeamController, sf: widget.sf),
            Padding(padding: EdgeInsets.symmetric(vertical: 10 * widget.sf), child: Text("VS", style: TextStyle(fontWeight: FontWeight.bold, color: Colors.grey, fontSize: 16 * widget.sf))),
            _buildSearch(label: "Adversário", controller: _opponentController, sf: widget.sf),
          ],
        ),
      ),
      actions: [
        TextButton(onPressed: () => Navigator.pop(context), child: Text('CANCELAR', style: TextStyle(fontSize: 14 * widget.sf))),
        ElevatedButton(
          style: ElevatedButton.styleFrom(backgroundColor: const Color(0xFFE74C3C), shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10 * widget.sf)), padding: EdgeInsets.symmetric(horizontal: 16 * widget.sf, vertical: 10 * widget.sf)),
          onPressed: _isLoading ? null : () async {
            if (_myTeamController.text.isNotEmpty && _opponentController.text.isNotEmpty) {
              setState(() => _isLoading = true);
              String? newGameId = await widget.gameController.createGame(_myTeamController.text, _opponentController.text, _seasonController.text);
              setState(() => _isLoading = false);
              if (newGameId != null && context.mounted) {
                Navigator.pop(context);
                Navigator.push(context, MaterialPageRoute(builder: (context) => PlacarPage(gameId: newGameId, myTeam: _myTeamController.text, opponentTeam: _opponentController.text)));
              }
            }
          },
          child: _isLoading ? SizedBox(width: 20 * widget.sf, height: 20 * widget.sf, child: const CircularProgressIndicator(color: Colors.white, strokeWidth: 2)) : Text('CRIAR', style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 14 * widget.sf)),
        ),
      ],
    );
  }
  
  Widget _buildSearch({required String label, required TextEditingController controller, required double sf}) {
    return StreamBuilder<List<Map<String, dynamic>>>(
      stream: widget.teamController.teamsStream,
      builder: (context, snapshot) {
        List<Map<String, dynamic>> teamList = snapshot.hasData ? snapshot.data! : [];
        return Autocomplete<Map<String, dynamic>>(
          displayStringForOption: (Map<String, dynamic> option) => option['name'].toString(),
          optionsBuilder: (TextEditingValue val) {
            if (val.text.isEmpty) return const Iterable<Map<String, dynamic>>.empty();
            return teamList.where((t) => t['name'].toString().toLowerCase().contains(val.text.toLowerCase()));
          },
          onSelected: (Map<String, dynamic> selection) { controller.text = selection['name'].toString(); },
          optionsViewBuilder: (context, onSelected, options) {
            return Align(
              alignment: Alignment.topLeft,
              child: Material(
                elevation: 4.0, borderRadius: BorderRadius.circular(8 * sf),
                child: ConstrainedBox(
                  constraints: BoxConstraints(maxHeight: 250 * sf, maxWidth: MediaQuery.of(context).size.width * 0.7), 
                  child: ListView.builder(
                    padding: EdgeInsets.zero, shrinkWrap: true, itemCount: options.length,
                    itemBuilder: (BuildContext context, int index) {
                      final option = options.elementAt(index);
                      final String name = option['name'].toString();
                      final String? imageUrl = option['image_url'];
                      return ListTile(
                        leading: CircleAvatar(radius: 20 * sf, backgroundColor: Colors.grey.shade200, backgroundImage: (imageUrl != null && imageUrl.isNotEmpty) ? NetworkImage(imageUrl) : null, child: (imageUrl == null || imageUrl.isEmpty) ? Icon(Icons.shield, color: Colors.grey, size: 20 * sf) : null),
                        title: Text(name, style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14 * sf)),
                        onTap: () { onSelected(option); },
                      );
                    },
                  ),
                ),
              ),
            );
          },
          fieldViewBuilder: (ctx, txtCtrl, node, submit) {
            if (txtCtrl.text.isEmpty && controller.text.isNotEmpty) { txtCtrl.text = controller.text; }
            txtCtrl.addListener(() { controller.text = txtCtrl.text; });
            return TextField(
              controller: txtCtrl, focusNode: node, style: TextStyle(fontSize: 14 * sf),
              decoration: InputDecoration(labelText: label, labelStyle: TextStyle(fontSize: 14 * sf), prefixIcon: Icon(Icons.search, size: 20 * sf), border: const OutlineInputBorder()),
            );
          },
        );
      },
    );
  }
}

// --- PÁGINA PRINCIPAL DOS JOGOS COM FILTROS ---
class GamePage extends StatefulWidget {
  const GamePage({super.key});

  @override
  State<GamePage> createState() => _GamePageState();
}

class _GamePageState extends State<GamePage> {
  final GameController gameController = GameController();
  final TeamController teamController = TeamController();

  // Variáveis para os filtros
  String selectedSeason = 'Todas';
  String selectedTeam = 'Todas';

  @override
  Widget build(BuildContext context) {
    final double wScreen = MediaQuery.of(context).size.width;
    final double hScreen = MediaQuery.of(context).size.height;
    final double sf = math.min(wScreen, hScreen) / 400;

    // Verifica se algum filtro está ativo para mudar a cor do ícone
    bool isFilterActive = selectedSeason != 'Todas' || selectedTeam != 'Todas';

    return Scaffold(
      backgroundColor: const Color(0xFFF5F7FA),
      appBar: AppBar(
        title: Text("Jogos", style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20 * sf)),
        backgroundColor: Colors.white,
        elevation: 0,
        actions: [
          // 👇 BOTÃO DE FILTRO NA APP BAR 👇
          Padding(
            padding: EdgeInsets.only(right: 8.0 * sf),
            child: IconButton(
              icon: Icon(
                isFilterActive ? Icons.filter_list_alt : Icons.filter_list, 
                color: isFilterActive ? const Color(0xFFE74C3C) : Colors.black87,
                size: 26 * sf,
              ),
              onPressed: () => _showFilterPopup(context, sf),
            ),
          )
        ],
      ),
      
      body: StreamBuilder<List<Map<String, dynamic>>>(
        stream: teamController.teamsStream,
        builder: (context, teamSnapshot) {
          final List<Map<String, dynamic>> teamsList = teamSnapshot.data ?? [];

          return StreamBuilder<List<Game>>(
            stream: gameController.getFilteredGames(teamFilter: selectedTeam, seasonFilter: selectedSeason),
            builder: (context, gameSnapshot) {
              if (gameSnapshot.connectionState == ConnectionState.waiting && teamsList.isEmpty) {
                return const Center(child: CircularProgressIndicator());
              }
              
              if (gameSnapshot.hasError) {
                  return Center(child: Text("Erro: ${gameSnapshot.error}", style: TextStyle(fontSize: 14 * sf)));
              }

              if (!gameSnapshot.hasData || gameSnapshot.data!.isEmpty) {
                return Center(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Icon(Icons.search_off, size: 48 * sf, color: Colors.grey.shade300),
                      SizedBox(height: 10 * sf),
                      Text("Nenhum jogo encontrado para este filtro.", style: TextStyle(fontSize: 14 * sf, color: Colors.grey.shade600)),
                    ],
                  )
                );
              }

              return ListView.builder(
                padding: EdgeInsets.all(16 * sf),
                itemCount: gameSnapshot.data!.length,
                itemBuilder: (context, index) {
                  final game = gameSnapshot.data![index];
                  
                  String? myLogo;
                  String? oppLogo;

                  for (var team in teamsList) {
                    if (team['name'] == game.myTeam) { myLogo = team['image_url']; }
                    if (team['name'] == game.opponentTeam) { oppLogo = team['image_url']; }
                  }

                  return GameResultCard(
                    gameId: game.id, 
                    myTeam: game.myTeam,
                    opponentTeam: game.opponentTeam,
                    myScore: game.myScore,
                    opponentScore: game.opponentScore,
                    status: game.status,
                    season: game.season,
                    myTeamLogo: myLogo,       
                    opponentTeamLogo: oppLogo, 
                    sf: sf, 
                  );
                },
              );
            },
          );
        },
      ),
      floatingActionButton: FloatingActionButton(
        backgroundColor: const Color(0xFFE74C3C),
        child: Icon(Icons.add, color: Colors.white, size: 24 * sf),
        onPressed: () => _showCreateDialog(context, sf),
      ),
    );
  }

  // 👇 O POPUP DE FILTROS 👇
  void _showFilterPopup(BuildContext context, double sf) {
    // Variáveis temporárias para o Popup (para não atualizar a lista antes de clicar em "Aplicar")
    String tempSeason = selectedSeason;
    String tempTeam = selectedTeam;

    showDialog(
      context: context,
      builder: (context) {
        // StatefulBuilder permite atualizar a interface APENAS dentro do Popup
        return StatefulBuilder(
          builder: (context, setPopupState) {
            return AlertDialog(
              shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20 * sf)),
              title: Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Text('Filtrar Jogos', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18 * sf)),
                  IconButton(
                    icon: const Icon(Icons.close, color: Colors.grey),
                    onPressed: () => Navigator.pop(context),
                    padding: EdgeInsets.zero,
                    constraints: const BoxConstraints(),
                  )
                ],
              ),
              content: Column(
                mainAxisSize: MainAxisSize.min,
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  // 1. Filtro de Temporada
                  Text("Temporada", style: TextStyle(fontSize: 12 * sf, color: Colors.grey.shade600, fontWeight: FontWeight.bold)),
                  SizedBox(height: 6 * sf),
                  Container(
                    padding: EdgeInsets.symmetric(horizontal: 12 * sf),
                    decoration: BoxDecoration(color: Colors.grey.shade100, borderRadius: BorderRadius.circular(10 * sf)),
                    child: DropdownButtonHideUnderline(
                      child: DropdownButton<String>(
                        isExpanded: true,
                        value: tempSeason,
                        style: TextStyle(fontSize: 14 * sf, color: Colors.black87, fontWeight: FontWeight.bold),
                        items: ['Todas', '2024/25', '2025/26'].map((String value) {
                          return DropdownMenuItem<String>(value: value, child: Text(value));
                        }).toList(),
                        onChanged: (newValue) {
                          setPopupState(() => tempSeason = newValue!);
                        },
                      ),
                    ),
                  ),
                  
                  SizedBox(height: 20 * sf),

                  // 2. Filtro de Equipa
                  Text("Equipa", style: TextStyle(fontSize: 12 * sf, color: Colors.grey.shade600, fontWeight: FontWeight.bold)),
                  SizedBox(height: 6 * sf),
                  Container(
                    padding: EdgeInsets.symmetric(horizontal: 12 * sf),
                    decoration: BoxDecoration(color: Colors.grey.shade100, borderRadius: BorderRadius.circular(10 * sf)),
                    child: StreamBuilder<List<Map<String, dynamic>>>(
                      stream: teamController.teamsStream,
                      builder: (context, snapshot) {
                        List<String> teamNames = ['Todas'];
                        if (snapshot.hasData) {
                          teamNames.addAll(snapshot.data!.map((t) => t['name'].toString()));
                        }
                        
                        if (!teamNames.contains(tempTeam)) tempTeam = 'Todas';

                        return DropdownButtonHideUnderline(
                          child: DropdownButton<String>(
                            isExpanded: true,
                            value: tempTeam,
                            style: TextStyle(fontSize: 14 * sf, color: Colors.black87, fontWeight: FontWeight.bold),
                            items: teamNames.map((String value) {
                              return DropdownMenuItem<String>(value: value, child: Text(value, overflow: TextOverflow.ellipsis));
                            }).toList(),
                            onChanged: (newValue) {
                              setPopupState(() => tempTeam = newValue!);
                            },
                          ),
                        );
                      }
                    ),
                  ),
                ],
              ),
              actions: [
                TextButton(
                  onPressed: () {
                    // Limpar Filtros
                    setState(() {
                      selectedSeason = 'Todas';
                      selectedTeam = 'Todas';
                    });
                    Navigator.pop(context);
                  }, 
                  child: Text('LIMPAR', style: TextStyle(fontSize: 12 * sf, color: Colors.grey))
                ),
                ElevatedButton(
                  style: ElevatedButton.styleFrom(
                    backgroundColor: const Color(0xFFE74C3C),
                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10 * sf)),
                  ),
                  onPressed: () {
                    // Aplicar Filtros (atualiza a página principal)
                    setState(() {
                      selectedSeason = tempSeason;
                      selectedTeam = tempTeam;
                    });
                    Navigator.pop(context);
                  },
                  child: Text('APLICAR', style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 13 * sf)),
                ),
              ],
            );
          }
        );
      },
    );
  }

  void _showCreateDialog(BuildContext context, double sf) {
    showDialog(
      context: context,
      builder: (context) => CreateGameDialogManual(
        teamController: teamController,
        gameController: gameController,
        sf: sf,
      ),
    );
  }
}