import 'package:flutter_bloc/flutter_bloc.dart';
import '../network/api_client.dart';
import 'app_theme.dart';

class ThemeState {
  final ThemePreset preset;
  final bool isLoading;

  const ThemeState({required this.preset, this.isLoading = false});
}

class ThemeCubit extends Cubit<ThemeState> {
  final ApiClient? apiClient;

  ThemeCubit({this.apiClient}) : super(ThemeState(preset: AppTheme.activePreset));

  Future<void> fetchUserThemePreference() async {
    if (apiClient == null) return;
    try {
      final res = await apiClient!.get('/api/v1/user/preferences');
      if (res.statusCode == 200 && res.data is Map) {
        final themeId = res.data['themePreference']?.toString();
        if (themeId != null && themeId.isNotEmpty) {
          final preset = AppTheme.getPresetById(themeId);
          AppTheme.activePreset = preset;
          emit(ThemeState(preset: preset));
        }
      }
    } catch (_) {
      // Keep active preset on network failure
    }
  }

  Future<void> setTheme(ThemePreset newPreset) async {
    AppTheme.activePreset = newPreset;
    emit(ThemeState(preset: newPreset));

    if (apiClient != null) {
      try {
        await apiClient!.put(
          '/api/v1/user/preferences/theme',
          data: {'themeId': newPreset.id},
        );
      } catch (_) {
        // Silently handle offline preference update
      }
    }
  }
}