import 'package:flutter/material.dart';
import 'package:playmaker/classe/home.config.dart';
import 'package:playmaker/grafico%20de%20pizza/grafico.dart';
import 'package:playmaker/pages/gamePage.dart';
import 'package:playmaker/pages/teamPage.dart';
import 'package:playmaker/controllers/team_controller.dart'; 
import 'package:supabase_flutter/supabase_flutter.dart';
import 'dart:math' as math; 

class HomeScreen extends StatefulWidget {
  const HomeScreen({super.key});

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  int _selectedIndex = 0;
  final TeamController _teamController = TeamController(); 
  String? _selectedTeamId; 
  String _selectedTeamName = "Selecionar Equipa"; 

  // Instância do Supabase para buscar as estatísticas
  final _supabase = Supabase.instance.client;

  @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;

    final List<Widget> pages = [
      _buildHomeContent(sf, wScreen),
      const GamePage(),
      const TeamsPage(),                         
      const Center(child: Text('Tela de Status')), 
    ];

    return Scaffold(
      backgroundColor: Colors.white,
      appBar: AppBar(
        title: Text('PlayMaker', style: TextStyle(fontSize: 20 * sf)), 
        backgroundColor: HomeConfig.primaryColor,
        foregroundColor: Colors.white,
        leading: IconButton(
          icon: Icon(Icons.person, size: 24 * sf),
          onPressed: () {},
        ),
      ),
      
      body: IndexedStack(
        index: _selectedIndex,
        children: pages,
      ),

      bottomNavigationBar: NavigationBar(
        selectedIndex: _selectedIndex,
        onDestinationSelected: (index) => setState(() => _selectedIndex = index),
        backgroundColor: Theme.of(context).colorScheme.surface,
        surfaceTintColor: Theme.of(context).colorScheme.surfaceTint,
        elevation: 1,
        height: 70 * math.min(sf, 1.2), 
        destinations: const [
          NavigationDestination(
            icon: Icon(Icons.home_outlined),
            selectedIcon: Icon(Icons.home_filled),
            label: 'Home',
          ),
          NavigationDestination(
            icon: Icon(Icons.sports_soccer_outlined),
            selectedIcon: Icon(Icons.sports_soccer),
            label: 'Jogo',
          ),
          NavigationDestination(
            icon: Icon(Icons.people_outline),
            selectedIcon: Icon(Icons.people),
            label: 'Equipas',
          ),
          NavigationDestination(
            icon: Icon(Icons.insights_outlined),
            selectedIcon: Icon(Icons.insights),
            label: 'Status',
          ),
        ],
      ),
    );
  }

  // --- POPUP DE SELEÇÃO DE EQUIPA ---
  void _showTeamSelector(BuildContext context, double sf) {
    showModalBottomSheet(
      context: context,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(top: Radius.circular(20 * sf)),
      ),
      builder: (context) {
        return StreamBuilder<List<Map<String, dynamic>>>(
          stream: _teamController.teamsStream,
          builder: (context, snapshot) {
            if (snapshot.connectionState == ConnectionState.waiting) {
              return const SizedBox(height: 200, child: Center(child: CircularProgressIndicator()));
            }
            if (!snapshot.hasData || snapshot.data!.isEmpty) {
              return SizedBox(height: 200 * sf, child: Center(child: Text("Nenhuma equipa criada.")));
            }

            final teams = snapshot.data!;
            return ListView.builder(
              shrinkWrap: true,
              itemCount: teams.length,
              itemBuilder: (context, index) {
                final team = teams[index];
                return ListTile(
                  title: Text(team['name']),
                  onTap: () {
                    setState(() {
                      _selectedTeamId = team['id'];
                      _selectedTeamName = team['name'];
                    });
                    Navigator.pop(context);
                  },
                );
              },
            );
          },
        );
      },
    );
  }

  Widget _buildHomeContent(double sf, double wScreen) {
    final double cardWidth = (wScreen - (40 * sf) - (20 * sf)) / 2;
    final double cardHeight = cardWidth * 1.4; // Ajustado para não cortar conteúdo

    return StreamBuilder<List<Map<String, dynamic>>>(
      // Buscar estatísticas de todos os jogadores da equipa selecionada
stream: _selectedTeamId != null 
    ? _supabase.from('player_stats_with_names').stream(primaryKey: ['id']).eq('team_id', _selectedTeamId!)
    : const Stream.empty(),
      builder: (context, snapshot) {
        // Lógica de cálculo de líderes
        Map<String, dynamic> leaders = _calculateLeaders(snapshot.data ?? []);

        return SingleChildScrollView(
          child: Padding(
            padding: EdgeInsets.all(20.0 * sf),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                // Seletor de Equipa
                InkWell(
                  onTap: () => _showTeamSelector(context, sf),
                  child: Container(
                    padding: EdgeInsets.all(12 * sf),
                    decoration: BoxDecoration(
                      color: Colors.grey.shade100,
                      borderRadius: BorderRadius.circular(15 * sf),
                      border: Border.all(color: Colors.grey.shade300),
                    ),
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
                      children: [
                        Row(
                          children: [
                            Icon(Icons.shield, color: HomeConfig.primaryColor, size: 24 * sf),
                            SizedBox(width: 10 * sf),
                            Text(_selectedTeamName, style: TextStyle(fontSize: 16 * sf, fontWeight: FontWeight.bold)),
                          ],
                        ),
                        const Icon(Icons.arrow_drop_down),
                      ],
                    ),
                  ),
                ),
                SizedBox(height: 25 * sf),

                // Primeira Linha: Pontos e Assistências
                Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    _buildStatCard(
                      title: 'Mais Pontos',
                      playerName: leaders['pts_name'],
                      statValue: leaders['pts_val'].toString(),
                      statLabel: 'TOTAL',
                      color: const Color(0xFF1565C0),
                      icon: Icons.bolt,
                      isHighlighted: true,
                      sf: sf, cardWidth: cardWidth, cardHeight: cardHeight,
                    ),
                    SizedBox(width: 20 * sf),
                    _buildStatCard(
                      title: 'Assistências',
                      playerName: leaders['ast_name'],
                      statValue: leaders['ast_val'].toString(),
                      statLabel: 'TOTAL',
                      color: const Color(0xFF2E7D32),
                      icon: Icons.star,
                      sf: sf, cardWidth: cardWidth, cardHeight: cardHeight,
                    ),
                  ],
                ),
                SizedBox(height: 20 * sf),

                // Segunda Linha: Rebotes e Gráfico
                Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    _buildStatCard(
                      title: 'Rebotes',
                      playerName: leaders['rbs_name'],
                      statValue: leaders['rbs_val'].toString(),
                      statLabel: 'TOTAL',
                      color: const Color(0xFF6A1B9A),
                      icon: Icons.trending_up,
                      sf: sf, cardWidth: cardWidth, cardHeight: cardHeight,
                    ),
                    SizedBox(width: 20 * sf),
                    PieChartCard(
                      title: 'DESEMPENHO',
                      subtitle: 'Temporada',
                      backgroundColor: const Color(0xFFC62828),
                      onTap: () {},
                      sf: sf, cardWidth: cardWidth, cardHeight: cardHeight,
                    ),
                  ],
                ),
                SizedBox(height: 40 * sf),
                Text('Histórico de Jogos', style: TextStyle(fontSize: 24 * sf, fontWeight: FontWeight.bold, color: Colors.grey[800])),
              ],
            ),
          ),
        );
      },
    );
  }

Map<String, dynamic> _calculateLeaders(List<Map<String, dynamic>> data) {
  Map<String, int> ptsMap = {};
  Map<String, int> astMap = {};
  Map<String, int> rbsMap = {};
  Map<String, String> namesMap = {}; // Aqui vamos guardar o nome real

  for (var row in data) {
    String pid = row['member_id'].toString(); 
    
    // 👇 BUSCA O NOME QUE VEM DA VIEW 👇
    namesMap[pid] = row['player_name']?.toString() ?? "Desconhecido";

    ptsMap[pid] = (ptsMap[pid] ?? 0) + (row['pts'] as int? ?? 0);
    astMap[pid] = (astMap[pid] ?? 0) + (row['ast'] as int? ?? 0);
    rbsMap[pid] = (rbsMap[pid] ?? 0) + (row['rbs'] as int? ?? 0);
  }

  // Se não houver dados, namesMap estará vazio e o reduce daria erro. 
  // Por isso, se estiver vazio, retornamos logo "---".
  if (ptsMap.isEmpty) {
    return {
      'pts_name': '---', 'pts_val': 0,
      'ast_name': '---', 'ast_val': 0,
      'rbs_name': '---', 'rbs_val': 0,
    };
  }

  String getBest(Map<String, int> map) {
    var bestId = map.entries.reduce((a, b) => a.value > b.value ? a : b).key;
    return namesMap[bestId]!;
  }
  
  int getBestVal(Map<String, int> map) => map.values.reduce((a, b) => a > b ? a : b);

  return {
    'pts_name': getBest(ptsMap), 'pts_val': getBestVal(ptsMap),
    'ast_name': getBest(astMap), 'ast_val': getBestVal(astMap),
    'rbs_name': getBest(rbsMap), 'rbs_val': getBestVal(rbsMap),
  };
}

  Widget _buildStatCard({
    required String title, required String playerName, required String statValue,
    required String statLabel, required Color color, required IconData icon,
    bool isHighlighted = false, required double sf, required double cardWidth, required double cardHeight,
  }) {
    return SizedBox(
      width: cardWidth, height: cardHeight,
      child: Card(
        elevation: 4,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(20 * sf),
          side: isHighlighted ? const BorderSide(color: Colors.amber, width: 2) : BorderSide.none,
        ),
        child: Container(
          decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(20 * sf),
            gradient: LinearGradient(begin: Alignment.topCenter, end: Alignment.bottomCenter, colors: [color.withOpacity(0.9), color]),
          ),
          child: Padding(
            padding: EdgeInsets.all(16.0 * sf),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(title.toUpperCase(), style: TextStyle(fontSize: 10 * sf, fontWeight: FontWeight.bold, color: Colors.white70)),
                Text(playerName, style: TextStyle(fontSize: 14 * sf, fontWeight: FontWeight.bold, color: Colors.white), maxLines: 1, overflow: TextOverflow.ellipsis),
                const Spacer(),
                Center(child: Text(statValue, style: TextStyle(fontSize: 32 * sf, fontWeight: FontWeight.bold, color: Colors.white))),
                Center(child: Text(statLabel, style: TextStyle(fontSize: 10 * sf, color: Colors.white70))),
                const Spacer(),
                Container(
                  width: double.infinity, padding: const EdgeInsets.symmetric(vertical: 6),
                  decoration: BoxDecoration(color: Colors.white24, borderRadius: BorderRadius.circular(10)),
                  child: Center(child: Text('DETALHES', style: TextStyle(color: Colors.white, fontSize: 10 * sf))),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}