import 'package:flutter/foundation.dart';
import 'package:mileograph_flutter/objects/objects.dart';
import 'package:mileograph_flutter/services/apiService.dart'; // assumes you've moved HomepageStats + submodels to a separate file

class DataService extends ChangeNotifier {
  final ApiService api;

  DataService({required this.api});

  HomepageStats? _homepageStats;
  HomepageStats? get homepageStats => _homepageStats;

  bool _isHomepageLoading = false;
  bool get isHomepageLoading => _isHomepageLoading;

  Future<void> fetchHomepageStats() async {
    _isHomepageLoading = true;
    notifyListeners();

    try {
      final json = await api.get('/stats/homepage');
      _homepageStats = HomepageStats.fromJson(json);
    } catch (e) {
      debugPrint('Failed to fetch homepage stats: $e');
      _homepageStats = null;
    } finally {
      _isHomepageLoading = false;
      notifyListeners();
    }
  }

  void clear() {
    _homepageStats = null;
    notifyListeners();
  }

  double getMileageForCurrentYear() {
    final currentYear = DateTime.now().year;
    return getMileageForYear(currentYear) ?? 0;
  }

  double? getMileageForYear(int year) {
    return _homepageStats?.yearlyMileage
            .firstWhere(
              (entry) => entry.year == year,
              orElse: () => YearlyMileage(year: null, mileage: 0),
            )
            .mileage ??
        0;
  }
}