import 'package:flutter/material.dart';
import 'character.dart';
import 'character_service.dart';
import 'pages/CharacterDetailPage.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Identity V Characters',
      home: MyHomePage(title: 'Персонажи Identity V'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final CharacterService _characterService = CharacterService();
  late Future<List<Character>> _futureCharacters;
  final TextEditingController _searchController = TextEditingController();

  @override
  void initState() {
    super.initState();
    _futureCharacters = _characterService.getCharacters();
  }

  void _searchCharacters(String query) {
    setState(() {
      _futureCharacters = _characterService.getCharacters(search: query);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
        actions: [
          IconButton(
            icon: Icon(Icons.search),
            onPressed: () {
              showSearch(
                context: context,
                delegate: CharacterSearchDelegate(_searchCharacters),
              );
            },
          ),
        ],
      ),
      body: FutureBuilder<List<Character>>(
        future: _futureCharacters,
        builder: (context, snapshot) {
          if (snapshot.connectionState == ConnectionState.waiting) {
            return Center(child: CircularProgressIndicator());
          } else if (snapshot.hasError) {
            return Center(child: Text('Ошибка: ${snapshot.error}'));
          } else if (!snapshot.hasData || snapshot.data!.isEmpty) {
            return Center(child: Text('Нет персонажей'));
          } else {
            final characters = snapshot.data!;

            return ListView.builder(
              itemCount: characters.length,
              itemBuilder: (context, index) {
                final character = characters[index];
                return ListTile(
                  leading: SizedBox(
                    width: 40,
                    child: Image.network(character.imageUrl, width: 50, height: 50),
                  ),
                  title: Text(character.name),
                  subtitle: Text(character.typeString),
                  trailing: IconButton(
                    icon: Icon(
                      character.isLiked ? Icons.favorite : Icons.favorite_border,
                      color: character.isLiked ? Colors.red : null,
                    ),
                    onPressed: () {
                      setState(() {
                        character.isLiked = !character.isLiked;
                      });
                      ScaffoldMessenger.of(context).showSnackBar(
                        SnackBar(
                          content: Text(
                            character.isLiked
                                ? '${character.name} понравился вам!'
                                : '${character.name} убран из лайков.',
                          ),
                          duration: Duration(seconds: 2),
                        ),
                      );
                    },
                  ),
                  onTap: () {
                    Navigator.push(
                      context,
                      MaterialPageRoute(
                        builder: (context) => CharacterDetailPage(character: character),
                      ),
                    );
                  },
                );
              },
            );
          }
        },
      ),
    );
  }
}

class CharacterSearchDelegate extends SearchDelegate {
  final Function(String) onSearch;

  CharacterSearchDelegate(this.onSearch);

  @override
  Widget buildSuggestions(BuildContext context) {
    return ListView();
  }

  @override
  Widget buildResults(BuildContext context) {
    onSearch(query); // Выполняем поиск
    return FutureBuilder<List<Character>>(
      future: CharacterService().getCharacters(search: query),  // Запрашиваем персонажей с фильтром
      builder: (context, snapshot) {
        if (snapshot.connectionState == ConnectionState.waiting) {
          return Center(child: CircularProgressIndicator());
        } else if (snapshot.hasError) {
          return Center(child: Text('Ошибка: ${snapshot.error}'));
        } else if (!snapshot.hasData || snapshot.data!.isEmpty) {
          return Center(child: Text('Нет результатов для "$query"'));
        } else {
          final characters = snapshot.data!;
          return ListView.builder(
            itemCount: characters.length,
            itemBuilder: (context, index) {
              final character = characters[index];
              return ListTile(
                title: Text(character.name),
                subtitle: Text(character.typeString),
              );
            },
          );
        }
      },
    );
  }

  @override
  List<Widget> buildActions(BuildContext context) {
    return [
      IconButton(
        icon: Icon(Icons.clear),
        onPressed: () {
          query = '';  // Очищаем запрос
        },
      ),
    ];
  }

  @override
  Widget buildLeading(BuildContext context) {
    return IconButton(
      icon: Icon(Icons.arrow_back),
      onPressed: () {
        close(context, null); // Закрываем поиск
      },
    );
  }
}