import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:dio/dio.dart';
import '../../core/api/tmdb_api.dart';
import '../../core/api/backend_api.dart';
import '../shared/providers.dart';

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

  @override
  ConsumerState<ImportScreen> createState() => _ImportScreenState();
}

class _ImportScreenState extends ConsumerState<ImportScreen> {
  final _movieCtrl =
      TextEditingController(text: '603, 27205'); // Matrix, Inception
  final _showCtrl =
      TextEditingController(text: '1396, 1399'); // Breaking Bad, GoT
  String _log = '';
  bool _busy = false;

  void _append(String msg) => setState(() => _log += msg + '\n');

  Future<void> _importMovies() async {
    setState(() => _busy = true);
    final tmdb = ref.read(tmdbApiProvider);
    final backend = ref.read(backendApiProvider);

    final ids = _movieCtrl.text
        .split(RegExp(r'[,\s]+'))
        .where((s) => s.isNotEmpty)
        .map(int.parse);
    for (final id in ids) {
      try {
        _append('Film $id: TMDB laden …');
        final json = await tmdb.getMovie(id);
        await backend.upsertMovie(json);
        _append('Film $id: OK ✓');
      } catch (e) {
        _append('Film $id: Fehler → $e');
      }
    }
    setState(() => _busy = false);
  }

  Future<void> _importShows() async {
    setState(() => _busy = true);
    final tmdb = ref.read(tmdbApiProvider);
    final backend = ref.read(backendApiProvider);

    final ids = _showCtrl.text
        .split(RegExp(r'[,\s]+'))
        .where((s) => s.isNotEmpty)
        .map(int.parse);

    for (final showId in ids) {
      try {
        _append('Serie $showId: TMDB laden …');
        final showJson = await tmdb.getShow(showId);
        print('SHOW JSON: $showJson'); // Debug-Ausgabe

        await backend.upsertShow(showJson);
        _append('Serie $showId: Show OK ✓');

        final seasons = (showJson['seasons'] as List? ?? const [])
            .where((s) => (s['season_number'] ?? 0) is int)
            .cast<Map<String, dynamic>>();

        for (final s in seasons) {
          final seasonNo = (s['season_number'] as num).toInt();
          if (seasonNo < 0) continue;
          _append('  S$seasonNo: TMDB Season laden …');

          final seasonJson = await tmdb.getSeason(showId, seasonNo);
          final dbShowId = await _getDbShowIdByTmdb(backend, showId);
          final dbSeasonId = await backend.upsertSeason(dbShowId, seasonJson);

          _append('  S$seasonNo: Season OK (db:$dbSeasonId)');

          final eps = (seasonJson['episodes'] as List? ?? const [])
              .cast<Map<String, dynamic>>();
          for (final e in eps) {
            await backend.upsertEpisode(dbSeasonId, e);
          }
          _append('  S$seasonNo: ${eps.length} Episoden OK ✓');
        }
      } catch (e) {
        // 👇 Hier kommt der erweiterte Catch hin!
        if (e is DioException) {
          print('❗ TMDB DioException für $showId');
          print('➡️ Request: ${e.requestOptions.uri}');
          print('➡️ Response: ${e.response?.data}');
          print('➡️ Status: ${e.response?.statusCode}');
        }
        _append('Serie $showId: Fehler → $e');
      }
    }
    setState(() => _busy = false);
  }

  Future<int> _getDbShowIdByTmdb(BackendApi backend, int tmdbId) async {
    final id = await backend.getShowDbIdByTmdbId(tmdbId);
    if (id == null) {
      throw Exception(
          'Show mit tmdb_id=$tmdbId nicht gefunden – zuerst upsert_show aufrufen.');
    }
    return id;
  }

  @override
  Widget build(BuildContext context) {
    final inputStyle = const TextStyle(fontSize: 13);

    return Scaffold(
      appBar: AppBar(title: const Text('Import (TMDB → DB)')),
      body: Padding(
        padding: const EdgeInsets.all(12),
        child: Column(
          children: [
            Row(
              children: [
                const Text('Filme TMDB-IDs: '),
                const SizedBox(width: 8),
                Expanded(
                    child:
                        TextField(controller: _movieCtrl, style: inputStyle)),
                const SizedBox(width: 8),
                FilledButton(
                  onPressed: _busy ? null : _importMovies,
                  child: const Text('Import Filme'),
                ),
              ],
            ),
            const SizedBox(height: 12),
            Row(
              children: [
                const Text('Serien TMDB-IDs: '),
                const SizedBox(width: 8),
                Expanded(
                    child: TextField(controller: _showCtrl, style: inputStyle)),
                const SizedBox(width: 8),
                FilledButton(
                  onPressed: _busy ? null : _importShows,
                  child: const Text('Import Serien'),
                ),
              ],
            ),
            const SizedBox(height: 12),
            if (_busy) const LinearProgressIndicator(),
            const SizedBox(height: 12),
            Expanded(
              child: Container(
                padding: const EdgeInsets.all(8),
                decoration: BoxDecoration(
                  border: Border.all(color: Colors.black12),
                  borderRadius: BorderRadius.circular(8),
                ),
                alignment: Alignment.topLeft,
                child: SingleChildScrollView(
                  child: SelectableText(_log,
                      style: const TextStyle(
                          fontFamily: 'monospace', fontSize: 12)),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}