import 'dart:async';
import 'package:provider/provider.dart';
import 'package:flutter/material.dart';
import 'package:insparkspokalen_ui/models/teamModel.dart'; 
import 'package:insparkspokalen_ui/services/teamService.dart';

class LeaderboardAdmin extends StatefulWidget {
  const LeaderboardAdmin({Key? key}) : super(key: key);

  @override
  State<LeaderboardAdmin> createState() => _LeaderboardState();
}

class _LeaderboardState extends State<LeaderboardAdmin> {
  late TeamService groupService;
  List<TeamModel> groups = [];
  bool isLoading = true;

  @override
  void initState() {
    super.initState();
    groupService = Provider.of<TeamService>(context, listen: false); 
    _loadGroups();

    // Uppdatera var 10:e sekund
    Timer.periodic(Duration(seconds: 10), (_) {
      _loadGroups();
    });
  }


  Future<void> _loadGroups() async {
    final result = await groupService.showTeams();
    setState(() {
      groups = result;
      isLoading = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    return SingleChildScrollView(
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const _Heading(),
          _GreyBackground(
            child: isLoading
                ? const Center(child: CircularProgressIndicator())
                : _TopplistaBody(groups: groups),
          ),
        ],
      ),
    );
  }
}

class _Heading extends StatelessWidget {
  const _Heading();

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Padding(
        padding: const EdgeInsets.only(top: 16.0),
        child: Text(
          'Hantera poäng',
          style: TextStyle(
            color: Color(0xFFDAA520),
            fontSize: 32,
            fontFamily: 'Nunito',
            fontWeight: FontWeight.w700,
          ),
        ),
      ),
    );
  }
}

class _GreyBackground extends StatelessWidget {
  final Widget child;

  const _GreyBackground({required this.child});

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: const EdgeInsets.all(16.0),
      padding: const EdgeInsets.all(16.0),
      decoration: BoxDecoration(
        color: const Color(0xFF6D6D6D),
        borderRadius: BorderRadius.circular(40),
      ),
      child: child,
    );
  }
}

class _TopplistaBody extends StatelessWidget {
  final List<TeamModel> groups;

  const _TopplistaBody({required this.groups});

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        ...groups
            .asMap()
            .entries
            .map((entry) => GruppKort.GroupCard(
          group: entry.value,
          place: entry.key + 1,
        ))
            .toList(),
        const SizedBox(height: 16),
      ],
    );
  }
}

class GruppKort extends StatefulWidget {
  final TeamModel group;
  final int place;

  const GruppKort.GroupCard({required this.group, required this.place});

  @override
  State<GruppKort> createState() => _GruppKortState();
}

class _GruppKortState extends State<GruppKort> {
  late TextEditingController _controller;

  @override
  void initState() {
    super.initState();
    _controller = TextEditingController(text: '0');
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }
  final groupService = TeamService();

Future<void> _updateScore(int scoreChange) async {
  final int? score = int.tryParse(_controller.text);
  if (score == null) return;

  final int updatedScore = scoreChange == 1 ? score : -score;

  final success = await groupService.updateScore(widget.group.id, updatedScore);

  if (success) {
    setState(() {
      _controller.text = '0';
    });

    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(content: Text('Poäng uppdaterad för ${widget.group.name}')),
    );
  } else {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(content: Text('Misslyckades att uppdatera poäng')),
    );
  }
}
  @override
  Widget build(BuildContext context) {
    return Card(
      elevation: 3,
      margin: const EdgeInsets.symmetric(vertical: 8.0),
      color: const Color(0xFF2E2E2E),
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(12),
      ),
      child: Padding(
        padding: const EdgeInsets.all(12.0),
        child: Column(
          children: [
            ListTile(
              contentPadding: EdgeInsets.zero,
              title: Align(
            alignment: Alignment.centerLeft,  
              child: Text(
                widget.group.name,
                style: const TextStyle(
                  fontSize: 18,
                  color: Color(0xFFD6D6D6),
                ),
              ),
              ),
              trailing: Text(
                '${widget.group.score} poäng',
                style: const TextStyle(
                  fontWeight: FontWeight.bold,
                  color: Color(0xFFD6D6D6),
                ),
              ),
            ),
            const SizedBox(height: 8),
            Row(
              children: [
                Expanded(
                  child: TextField(
                    controller: _controller,
                    keyboardType: TextInputType.number,
                    style: const TextStyle(color: Colors.white),
                    decoration: InputDecoration(
                      labelText: 'Ange poängändring',
                      labelStyle: const TextStyle(color: Colors.white),
                      enabledBorder: OutlineInputBorder(
                        borderSide: const BorderSide(color: Color(0xFFDAA520)),
                        borderRadius: BorderRadius.circular(8),
                      ),
                      focusedBorder: OutlineInputBorder(
                        borderSide: const BorderSide(color: Color(0xFFDAA520), width: 2),
                        borderRadius: BorderRadius.circular(8),
                      ),
                    ),
                  ),
                ),
                const SizedBox(width: 8),
              
                IconButton(
                  icon: const Icon(Icons.add, color: Color(0xFFDAA520)),
                  onPressed: () => _updateScore(1), 
                ),
                const SizedBox(width: 8),
                
                IconButton(
                  icon: const Icon(Icons.remove, color: Color(0xFFDAA520)),
                  onPressed: () => _updateScore(-1),  
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}