import 'dart:convert';
import 'package:http/http.dart' as http;

/// Service for myQuran.com v3 Sholat API.
/// Provides Kemenag-accurate prayer times for Indonesian cities.
///
/// Ported directly from the jamshalat-diary project.
class MyQuranSholatService {
  static const String _baseUrl = 'https://api.myquran.com/v3/sholat';
  static final MyQuranSholatService instance = MyQuranSholatService._();
  MyQuranSholatService._();

  /// Search for a city/kabupaten by name.
  /// Returns list of {id, lokasi}.
  Future<List<Map<String, dynamic>>> searchCity(String query) async {
    try {
      final response = await http.get(
        Uri.parse('$_baseUrl/kota/cari/$query'),
      );
      if (response.statusCode == 200) {
        final data = json.decode(response.body);
        if (data['status'] == true) {
          return List<Map<String, dynamic>>.from(data['data']);
        }
      }
    } catch (e) {
      // silent fallback — device is offline
    }
    return [];
  }

  /// Get prayer times for today.
  /// [cityId] = myQuran city ID (hash string)
  /// Returns map: {tanggal, imsak, subuh, terbit, dhuha, dzuhur, ashar, maghrib, isya}
  Future<Map<String, String>?> getDailySchedule(String cityId) async {
    try {
      final response = await http.get(Uri.parse('$_baseUrl/jadwal/$cityId/today'));
      if (response.statusCode == 200) {
        final data = json.decode(response.body);
        if (data['status'] == true) {
          final jadwalMap = data['data']['jadwal'] as Map<String, dynamic>;
          if (jadwalMap.isNotEmpty) {
            final firstKey = jadwalMap.keys.first;
            final jadwal = jadwalMap[firstKey];
            if (jadwal != null) {
              final result = Map<String, String>.from(jadwal.map((k, v) => MapEntry(k.toString(), v.toString())));
              result['date'] = firstKey;
              return result;
            }
          }
        }
      }
    } catch (e) {
      // silent fallback
    }
    return null;
  }


  /// Get monthly prayer schedule (bulk fetch for offline caching).
  /// [month] = 'yyyy-MM' format (e.g., '2024-03')
  /// Returns map of date → jadwal.
  Future<Map<String, Map<String, String>>> getMonthlySchedule(
      String cityId, String month) async {
    try {
      final response = await http.get(
        Uri.parse('$_baseUrl/jadwal/$cityId/$month'),
      );
      if (response.statusCode == 200) {
        final data = json.decode(response.body);
        if (data['status'] == true) {
          final jadwalMap = data['data']['jadwal'] as Map<String, dynamic>;
          final result = <String, Map<String, String>>{};
          for (final entry in jadwalMap.entries) {
            result[entry.key] = Map<String, String>.from(
              (entry.value as Map).map(
                  (k, v) => MapEntry(k.toString(), v.toString())),
            );
          }
          return result;
        }
      }
    } catch (e) {
      // silent fallback
    }
    return {};
  }

  /// Get city info (kabko, prov) from a jadwal response.
  Future<Map<String, String>?> getCityInfo(String cityId) async {
    final today =
        DateTime.now().toIso8601String().substring(0, 10);
    try {
      final response = await http.get(
        Uri.parse('$_baseUrl/jadwal/$cityId/$today'),
      );
      if (response.statusCode == 200) {
        final data = json.decode(response.body);
        if (data['status'] == true) {
          return {
            'kabko': data['data']['kabko']?.toString() ?? '',
            'prov': data['data']['prov']?.toString() ?? '',
          };
        }
      }
    } catch (e) {
      // silent fallback
    }
    return null;
  }
}