import 'package:flutter/material.dart';
import 'package:playmaker/pages/PlacarPage.dart'; 
import 'package:playmaker/classe/theme.dart'; 
import 'package:cached_network_image/cached_network_image.dart'; 
import '../controllers/team_controller.dart';
import '../controllers/game_controller.dart'; 
import '../models/game_model.dart';
import '../utils/size_extension.dart';

import 'pdf_export_service.dart'; 

class GameResultCard extends StatelessWidget {
  final String gameId, myTeam, opponentTeam, myScore, opponentScore, status, season;
  final String? myTeamLogo, opponentTeamLogo; 
  final double sf; 
  final VoidCallback onDelete;

  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, required this.onDelete,
  });

  @override
  Widget build(BuildContext context) {
    final bgColor = Theme.of(context).cardTheme.color ?? Theme.of(context).colorScheme.surface;
    final textColor = Theme.of(context).colorScheme.onSurface;

    return Container(
      margin: EdgeInsets.only(bottom: 16 * sf),
      padding: EdgeInsets.all(16 * sf),
      decoration: BoxDecoration(
        color: bgColor,
        borderRadius: BorderRadius.circular(20 * sf),
        boxShadow: [BoxShadow(color: Colors.black12, blurRadius: 10 * sf)],
        border: Border.all(color: Colors.grey.withOpacity(0.1)),
      ),
      child: Stack(
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Expanded(child: _buildTeamInfo(myTeam, AppTheme.primaryRed, myTeamLogo, sf, textColor)),
              _buildScoreCenter(context, gameId, sf, textColor),
              Expanded(child: _buildTeamInfo(opponentTeam, Colors.grey.shade600, opponentTeamLogo, sf, textColor)),
            ],
          ),
          
          Positioned(
            top: -10 * sf,
            right: -10 * sf,
            child: Row(
              children: [
                IconButton(
                  icon: Icon(Icons.picture_as_pdf, color: AppTheme.primaryRed.withOpacity(0.8), size: 22 * sf),
                  splashRadius: 20 * sf,
                  tooltip: 'Gerar PDF',
                  onPressed: () async {
                    ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('A gerar PDF...'), duration: Duration(seconds: 1)));
                    await PdfExportService.generateAndPrintBoxScore(
                      gameId: gameId,
                      myTeam: myTeam,
                      opponentTeam: opponentTeam,
                      myScore: myScore,
                      opponentScore: opponentScore,
                      season: season,
                    );
                  },
                ),
                IconButton(
                  icon: Icon(Icons.delete_outline, color: Colors.grey.shade400, size: 22 * sf),
                  splashRadius: 20 * sf,
                  tooltip: 'Eliminar Jogo',
                  onPressed: () => _showDeleteConfirmation(context),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  void _showDeleteConfirmation(BuildContext context) {
    showDialog(
      context: context,
      builder: (ctx) => AlertDialog(
        backgroundColor: Theme.of(context).colorScheme.surface,
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(15 * sf)),
        title: Text('Eliminar Jogo', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16 * sf, color: Theme.of(context).colorScheme.onSurface)),
        content: Text('Tem a certeza que deseja eliminar este jogo? Esta ação apagará todas as estatísticas associadas e não pode ser desfeita.', style: TextStyle(fontSize: 14 * sf, color: Theme.of(context).colorScheme.onSurface)),
        actions: [
          TextButton(
            onPressed: () => Navigator.pop(ctx), 
            child: Text('CANCELAR', style: TextStyle(color: Colors.grey, fontSize: 14 * sf))
          ),
          TextButton(
            onPressed: () {
              Navigator.pop(ctx);
              onDelete();
            }, 
            child: Text('ELIMINAR', style: TextStyle(color: AppTheme.primaryRed, fontWeight: FontWeight.bold, fontSize: 14 * sf))
          ),
        ],
      )
    );
  }

  Widget _buildTeamInfo(String name, Color color, String? logoUrl, double sf, Color textColor) {
    final double avatarSize = 48 * sf;

    return Column(
      children: [
        ClipOval(
          child: Container(
            width: avatarSize,
            height: avatarSize,
            color: color.withOpacity(0.1),
            child: (logoUrl != null && logoUrl.isNotEmpty) 
                ? CachedNetworkImage(
                    imageUrl: logoUrl,
                    fit: BoxFit.cover,
                    fadeInDuration: Duration.zero,
                    placeholder: (context, url) => Center(child: Icon(Icons.shield, color: color, size: 24 * sf)),
                    errorWidget: (context, url, error) => Center(child: Icon(Icons.shield, color: color, size: 24 * sf)),
                  )
                : Center(child: Icon(Icons.shield, color: color, size: 24 * sf)),
          ),
        ),
        SizedBox(height: 6 * sf),
        Text(name, style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13 * sf, color: textColor), textAlign: TextAlign.center, overflow: TextOverflow.ellipsis, maxLines: 2),
      ],
    );
  }

  Widget _buildScoreCenter(BuildContext context, String id, double sf, Color textColor) {
    return Column(
      children: [
        Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            _scoreBox(myScore, AppTheme.successGreen, sf),
            Text(" : ", style: TextStyle(fontWeight: FontWeight.bold, fontSize: 22 * sf, color: textColor)),
            _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: AppTheme.primaryRed),
          label: Text("RETORNAR", style: TextStyle(fontSize: 11 * sf, color: AppTheme.primaryRed, fontWeight: FontWeight.bold)),
          style: TextButton.styleFrom(backgroundColor: AppTheme.primaryRed.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)),
  );
}

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(
      backgroundColor: Theme.of(context).colorScheme.surface,
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20 * widget.sf)),
      title: Text('Configurar Partida', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18 * widget.sf, color: Theme.of(context).colorScheme.onSurface)),
      content: SingleChildScrollView(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            TextField(
              controller: _seasonController, 
              style: TextStyle(fontSize: 14 * widget.sf, color: Theme.of(context).colorScheme.onSurface), 
              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(context, "Minha Equipa", _myTeamController),
            Padding(padding: EdgeInsets.symmetric(vertical: 10 * widget.sf), child: Text("VS", style: TextStyle(fontWeight: FontWeight.bold, color: Colors.grey, fontSize: 16 * widget.sf))),
            _buildSearch(context, "Adversário", _opponentController),
          ],
        ),
      ),
      actions: [
        TextButton(onPressed: () => Navigator.pop(context), child: Text('CANCELAR', style: TextStyle(fontSize: 14 * widget.sf, color: Colors.grey))),
        ElevatedButton(
          style: ElevatedButton.styleFrom(backgroundColor: AppTheme.primaryRed, 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(BuildContext context, String label, TextEditingController controller) {
    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(
                color: Theme.of(context).colorScheme.surface,
                elevation: 4.0, borderRadius: BorderRadius.circular(8 * widget.sf),
                child: ConstrainedBox(
                  constraints: BoxConstraints(maxHeight: 250 * widget.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: ClipOval(
                          child: Container(
                            width: 40 * widget.sf,
                            height: 40 * widget.sf,
                            color: Colors.grey.withOpacity(0.2),
                            child: (imageUrl != null && imageUrl.isNotEmpty) 
                                ? CachedNetworkImage(
                                    imageUrl: imageUrl,
                                    fit: BoxFit.cover,
                                    fadeInDuration: Duration.zero,
                                    placeholder: (context, url) => Icon(Icons.shield, color: Colors.grey, size: 20 * widget.sf),
                                    errorWidget: (context, url, error) => Icon(Icons.shield, color: Colors.grey, size: 20 * widget.sf),
                                  )
                                : Icon(Icons.shield, color: Colors.grey, size: 20 * widget.sf),
                          ),
                        ),
                        title: Text(name, style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14 * widget.sf, color: Theme.of(context).colorScheme.onSurface)),
                        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 * widget.sf, color: Theme.of(context).colorScheme.onSurface),
              decoration: InputDecoration(labelText: label, labelStyle: TextStyle(fontSize: 14 * widget.sf), prefixIcon: Icon(Icons.search, size: 20 * widget.sf, color: AppTheme.primaryRed)),
            );
          },
        );
      },
    );
  }
}

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();
  String selectedSeason = 'Todas';
  String selectedTeam = 'Todas';

  @override
  Widget build(BuildContext context) {
    bool isFilterActive = selectedSeason != 'Todas' || selectedTeam != 'Todas';

    return Scaffold(
      backgroundColor: Theme.of(context).scaffoldBackgroundColor,
      appBar: AppBar(
        title: Text("Jogos", style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20 * context.sf)),
        backgroundColor: Theme.of(context).scaffoldBackgroundColor,
        elevation: 0,
        actions: [
          Padding(
            padding: EdgeInsets.only(right: 8.0 * context.sf),
            child: IconButton(
              icon: Icon(isFilterActive ? Icons.filter_list_alt : Icons.filter_list, color: isFilterActive ? AppTheme.primaryRed : Theme.of(context).colorScheme.onSurface, size: 26 * context.sf),
              onPressed: () => _showFilterPopup(context),
            ),
          )
        ],
      ),
      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 * context.sf, color: Theme.of(context).colorScheme.onSurface)));
              if (!gameSnapshot.hasData || gameSnapshot.data!.isEmpty) {
                return Center(child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [Icon(Icons.search_off, size: 48 * context.sf, color: Colors.grey.withOpacity(0.3)), SizedBox(height: 10 * context.sf), Text("Nenhum jogo encontrado.", style: TextStyle(fontSize: 14 * context.sf, color: Colors.grey))]));
              }
              return ListView.builder(
                padding: EdgeInsets.all(16 * context.sf),
                itemCount: gameSnapshot.data!.length,
                itemBuilder: (context, index) {
                  final game = gameSnapshot.data![index];
                  String? myLogo, 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: context.sf,
                    onDelete: () async {
                      bool success = await gameController.deleteGame(game.id);
                      if (context.mounted) {
                        if (success) {
                          setState(() {}); 
                          ScaffoldMessenger.of(context).showSnackBar(
                            const SnackBar(content: Text('Jogo eliminado com sucesso!'), backgroundColor: Colors.green)
                          );
                        } else {
                          ScaffoldMessenger.of(context).showSnackBar(
                            const SnackBar(content: Text('Erro ao eliminar o jogo.'), backgroundColor: Colors.red)
                          );
                        }
                      }
                    },
                  );
                },
              );
            },
          );
        },
      ),
      floatingActionButton: FloatingActionButton(
        heroTag: 'add_game_btn', 
        backgroundColor: AppTheme.primaryRed,
        child: Icon(Icons.add, color: Colors.white, size: 24 * context.sf),
        onPressed: () => showDialog(context: context, builder: (context) => CreateGameDialogManual(teamController: teamController, gameController: gameController, sf: context.sf)),
      ),
    );
  }

  void _showFilterPopup(BuildContext context) {
    String tempSeason = selectedSeason;
    String tempTeam = selectedTeam;
    showDialog(
      context: context,
      builder: (context) {
        return StatefulBuilder(
          builder: (context, setPopupState) {
            return AlertDialog(
              backgroundColor: Theme.of(context).colorScheme.surface,
              shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20 * context.sf)),
              title: Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Text('Filtrar Jogos', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18 * context.sf, color: Theme.of(context).colorScheme.onSurface)),
                  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: [
                  Text("Temporada", style: TextStyle(fontSize: 12 * context.sf, color: Colors.grey, fontWeight: FontWeight.bold)),
                  SizedBox(height: 6 * context.sf),
                  Container(
                    padding: EdgeInsets.symmetric(horizontal: 12 * context.sf), decoration: BoxDecoration(color: Theme.of(context).cardTheme.color, borderRadius: BorderRadius.circular(10 * context.sf), border: Border.all(color: Colors.grey.withOpacity(0.2))),
                    child: DropdownButtonHideUnderline(
                      child: DropdownButton<String>(
                        dropdownColor: Theme.of(context).colorScheme.surface,
                        isExpanded: true, value: tempSeason, style: TextStyle(fontSize: 14 * context.sf, color: Theme.of(context).colorScheme.onSurface, fontWeight: FontWeight.bold),
                        items: ['Todas', '2024/25', '2025/26'].map((String value) => DropdownMenuItem<String>(value: value, child: Text(value))).toList(),
                        onChanged: (newValue) => setPopupState(() => tempSeason = newValue!),
                      ),
                    ),
                  ),
                  SizedBox(height: 20 * context.sf),
                  Text("Equipa", style: TextStyle(fontSize: 12 * context.sf, color: Colors.grey, fontWeight: FontWeight.bold)),
                  SizedBox(height: 6 * context.sf),
                  Container(
                    padding: EdgeInsets.symmetric(horizontal: 12 * context.sf), decoration: BoxDecoration(color: Theme.of(context).cardTheme.color, borderRadius: BorderRadius.circular(10 * context.sf), border: Border.all(color: Colors.grey.withOpacity(0.2))),
                    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>(
                            dropdownColor: Theme.of(context).colorScheme.surface,
                            isExpanded: true, value: tempTeam, style: TextStyle(fontSize: 14 * context.sf, color: Theme.of(context).colorScheme.onSurface, fontWeight: FontWeight.bold),
                            items: teamNames.map((String value) => DropdownMenuItem<String>(value: value, child: Text(value, overflow: TextOverflow.ellipsis))).toList(),
                            onChanged: (newValue) => setPopupState(() => tempTeam = newValue!),
                          ),
                        );
                      }
                    ),
                  ),
                ],
              ),
              actions: [
                TextButton(onPressed: () { setState(() { selectedSeason = 'Todas'; selectedTeam = 'Todas'; }); Navigator.pop(context); }, child: Text('LIMPAR', style: TextStyle(fontSize: 12 * context.sf, color: Colors.grey))),
                ElevatedButton(style: ElevatedButton.styleFrom(backgroundColor: AppTheme.primaryRed, shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10 * context.sf))), onPressed: () { setState(() { selectedSeason = tempSeason; selectedTeam = tempTeam; }); Navigator.pop(context); }, child: Text('APLICAR', style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 13 * context.sf))),
              ],
            );
          }
        );
      },
    );
  }
}