multimedia_flutter/lib/features/games/presentation/games_add_screen.dart

import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../shared/providers.dart';
import '../data/game_repository.dart';

class GamesAddScreen extends ConsumerStatefulWidget {
  const GamesAddScreen({super.key});

  @override
  ConsumerState<GamesAddScreen> createState() => _GamesAddScreenState();
}

class _GamesAddScreenState extends ConsumerState<GamesAddScreen> {
  final _queryCtrl = TextEditingController();
  bool _loading = false;
  List<Map<String, dynamic>> _results = const [];
  final Set<int> _selected = {};
  Set<int> _existing = {};

  Future<void> _loadExisting() async {
    final backend = ref.read(backendApiProvider);
    const pageSize = 500;
    var offset = 0;
    final ids = <int>{};
    while (true) {
      final page = await backend.getGames(offset: offset, limit: pageSize);
      for (final g in page) {
        final v = (g['igdb_id'] as num?)?.toInt();
        if (v != null) ids.add(v);
      }
      if (page.length < pageSize) break;
      offset += pageSize;
    }
    setState(() {
      _existing = ids;
    });
  }

  Future<void> _search() async {
    final q = _queryCtrl.text.trim();
    if (q.isEmpty) return;
    setState(() {
      _loading = true;
      _results = const [];
      _selected.clear();
    });
    try {
      await _loadExisting();
      final igdb = ref.read(igdbApiProvider);
      final items = await igdb.searchGames(q, limit: 30, lang: 'de');
      final filtered = items.where((g) {
        final id = (g['id'] as num?)?.toInt();
        if (id == null) return true;
        return !_existing.contains(id);
      }).toList();
      setState(() => _results = filtered);
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context)
            .showSnackBar(SnackBar(content: Text('Suche fehlgeschlagen: $e')));
      }
    } finally {
      if (mounted) setState(() => _loading = false);
    }
  }

  Future<void> _addSelected() async {
    if (_selected.isEmpty) return;
    setState(() => _loading = true);
    final messenger = ScaffoldMessenger.of(context);
    try {
      final backend = ref.read(backendApiProvider);
      int ok = 0;
      for (final id in _selected) {
        final game = _results.firstWhere((g) => (g['id'] as num).toInt() == id);
        final name = (game['name'] ?? '') as String;
        final original = (game['original_name'] ?? '') as String;
        final summary = (game['summary'] ?? '') as String;
        final title = (game['name'] ?? '') as String;
        final cover = game['cover_url'] as String?;
        final fr = game['first_release_date'];
        int? releaseYear;
        if (fr is num) {
          releaseYear = DateTime.fromMillisecondsSinceEpoch(fr.toInt() * 1000).year;
        }
        if (name.isEmpty) continue;
        await backend.setGameStatus(
          igdbId: id,
          name: name,
          originalName: original.isNotEmpty ? original : null,
          status: 0,
          note: null,
          lang: 'de',
          title: title.isNotEmpty ? title : null,
          summary: summary.isNotEmpty ? summary : null,
          coverUrl: cover,
          releaseYear: releaseYear,
        );
        ok++;
      }
      // ignore: unused_result
      ref.invalidate(gamesStreamProvider);
      // ignore: unused_result
      ref.invalidate(gamesProvider);
      messenger.showSnackBar(SnackBar(content: Text('$ok Spiel(e) hinzugefügt')));
      if (mounted) Navigator.of(context).pop();
    } catch (e) {
      messenger.showSnackBar(SnackBar(content: Text('Hinzufügen fehlgeschlagen: $e')));
    } finally {
      if (mounted) setState(() => _loading = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Neue Spiele hinzufügen (IGDB)'),
        actions: [
          if (_selected.isNotEmpty)
            TextButton.icon(
              onPressed: _loading ? null : _addSelected,
              icon: const Icon(Icons.add),
              label: Text('Hinzufügen (${_selected.length})'),
            )
        ],
      ),
      body: Padding(
        padding: const EdgeInsets.all(12),
        child: Column(
          children: [
            Row(
              children: [
                Expanded(
                  child: TextField(
                    controller: _queryCtrl,
                    decoration: const InputDecoration(
                      hintText: 'Spiele suchen …',
                      prefixIcon: Icon(Icons.search),
                    ),
                    onSubmitted: (_) => _search(),
                  ),
                ),
                const SizedBox(width: 8),
                FilledButton.icon(
                  onPressed: _loading ? null : _search,
                  icon: const Icon(Icons.search),
                  label: const Text('Suchen'),
                ),
              ],
            ),
            const SizedBox(height: 12),
            if (_loading) const LinearProgressIndicator(),
            const SizedBox(height: 8),
            Expanded(
              child: _results.isEmpty
                  ? const Center(child: Text('Keine Ergebnisse'))
                  : ListView.separated(
                      itemCount: _results.length,
                      separatorBuilder: (_, __) => const Divider(height: 1),
                      itemBuilder: (_, i) {
                        final g = _results[i];
                        final id = (g['id'] as num).toInt();
                        final sel = _selected.contains(id);
                        final title = (g['name'] ?? '') as String;
                        final summary = (g['summary'] ?? '') as String;
                        final cover = g['cover_url'] as String?;
                        final fr = g['first_release_date'];
                        int? releaseYear;
                        if (fr is num) {
                          releaseYear = DateTime.fromMillisecondsSinceEpoch(fr.toInt() * 1000).year;
                        }
                        return ListTile(
                          onTap: () {
                            setState(() {
                              if (sel) {
                                _selected.remove(id);
                              } else {
                                _selected.add(id);
                              }
                            });
                          },
                          leading: cover != null
                              ? ClipRRect(
                                  borderRadius: BorderRadius.circular(6),
                                  child: CachedNetworkImage(
                                    imageUrl: cover,
                                    width: 60,
                                    height: 80,
                                    fit: BoxFit.cover,
                                  ),
                                )
                              : const SizedBox(width: 60, height: 80),
                          title: Text(
                            releaseYear != null ? '$title ($releaseYear)' : title,
                          ),
                          subtitle: summary.isNotEmpty
                              ? Text(
                                  summary,
                                  maxLines: 3,
                                  overflow: TextOverflow.ellipsis,
                                )
                              : null,
                          isThreeLine: summary.isNotEmpty,
                          trailing: Checkbox(
                            value: sel,
                            onChanged: (v) {
                              setState(() {
                                if (v == true) {
                                  _selected.add(id);
                                } else {
                                  _selected.remove(id);
                                }
                              });
                            },
                          ),
                        );
                      },
                    ),
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton.extended(
        onPressed: _selected.isEmpty || _loading ? null : _addSelected,
        icon: const Icon(Icons.add),
        label: Text('Hinzufügen (${_selected.length})'),
      ),
    );
  }
}