import 'package:flutter/material.dart';
import 'package:gamer_updater/db.dart';
import 'package:gamer_updater/game.dart';
import 'package:gamer_updater/widgets/new_game_card.dart';
import 'package:gamer_updater/widgets/game_card.dart';
import 'dart:async';

void main() async {
  await DB.init();

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Gamer Updater',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      darkTheme: ThemeData(
        brightness: Brightness.dark,
        useMaterial3: true,
        scaffoldBackgroundColor: Colors.black,
        colorSchemeSeed: Colors.deepPurple,
        cardTheme: CardTheme(
          color: Colors.grey[900],
          elevation: 4,
          margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
        ),
        textTheme: const TextTheme(
          titleLarge: TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
          bodyLarge: TextStyle(fontSize: 20),
          bodyMedium: TextStyle(fontSize: 20),
          bodySmall: TextStyle(fontSize: 14),
        ),
      ),
      themeMode: ThemeMode.system,
      home: const MyHomePage(title: 'Gamer Updater'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});
  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  late Map<String, Game> games = {};
  String searchQuery = "";
  final TextEditingController _searchController = TextEditingController();
  Timer? _debounce;

  @override
  void initState() {
    super.initState();
    _refreshGames();
  }

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

  Future<void> _refreshGames() async {
    final games = await GameRepository.getAll();
    games.forEach((key, game) {
      game.updateActualVersion().then((_) {
        GameRepository.upsert(game);
        setState(() {
          this.games[game.name] = game;
        });
      });
    });
    setState(() {
      this.games = games;
    });
  }

  List<Game> get filteredGames {
    if (searchQuery.isEmpty) {
      return games.values.toList();
    }
    return games.values.where((game) => 
      game.name.toLowerCase().contains(searchQuery.toLowerCase())
    ).toList();
  }

  void _onSearchChanged(String value) {
    if (_debounce?.isActive ?? false) _debounce!.cancel();
    _debounce = Timer(const Duration(milliseconds: 100), () {
      setState(() {
        searchQuery = value;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
        actions: [
          IconButton(icon: const Icon(Icons.refresh), onPressed: _refreshGames),
        ],
      ),
      body: Column(
        children: [
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: TextField(
              controller: _searchController,
              decoration: InputDecoration(
                hintText: 'Search games...',
                prefixIcon: const Icon(Icons.search),
                suffixIcon: searchQuery.isNotEmpty 
                  ? IconButton(
                      icon: const Icon(Icons.clear),
                      onPressed: () {
                        _searchController.clear();
                        setState(() {
                          searchQuery = "";
                        });
                      },
                    )
                  : null,
                border: OutlineInputBorder(
                  borderRadius: BorderRadius.circular(10),
                ),
              ),
              onChanged: _onSearchChanged,
            ),
          ),
          Expanded(
            child: RefreshIndicator(
              onRefresh: _refreshGames,
              child: SingleChildScrollView(
                padding: const EdgeInsets.all(8),
                child: Wrap(
                  spacing: 8,
                  runSpacing: 8,
                  children: [
                    ...filteredGames.map(
                      (game) => SizedBox(
                        key: ValueKey(game.name),
                        width: (MediaQuery.of(context).size.width - 24) / 2,
                        child: GameCard(
                          key: ValueKey('card_${game.name}'),
                          game: game,
                          onGameUpdated: (game) async {
                            game = await GameRepository.upsert(game);
                            setState(() {
                              games[game.name] = game;
                            });
                          },
                          onDelete: () async {
                            await GameRepository.delete(game);
                            setState(() {
                              games.remove(game.name);
                            });
                          },
                        ),
                      ),
                    ),
                    SizedBox(
                      width: (MediaQuery.of(context).size.width - 24) / 2,
                      child: NewGameCard(
                        onGameCreated: (game) async {
                          game = await GameRepository.upsert(game);
                          setState(() {
                            games[game.name] = game;
                          });
                        },
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}