getRoadIncidents method

Implementation

// II.D - Road Incidents Methods
///////////////
/// Gets road incidents (accidents, hazards, closures) along a route
Future<List<Map<String, dynamic>>> getRoadIncidents(RouteDetails route) async {
  try {
    // Check cache first
    final cacheKey = _generateIncidentsCacheKey(route);
    final now = DateTime.now();

    if (_incidentsCache.containsKey(cacheKey) &&
        now.difference(_lastIncidentsFetch) < _cacheExpiry) {
      return _incidentsCache[cacheKey] as List<Map<String, dynamic>>;
    }

    // Format coordinates for API call
    final coords = route.points.map((p) => '${p.lng},${p.lat}').join(';');
    final url = Uri.https(_baseUrl, _incidentsPath, {
      'access_token': accessToken,
      'geometry': coords,
      'geometries': 'polyline',
      'overview': 'full',
    });

    final response = await http.get(url);

    if (response.statusCode == 200) {
      final data = json.decode(response.body);
      final incidents = List<Map<String, dynamic>>.from(data['incidents'] ?? []);

      // Cache the results
      _incidentsCache[cacheKey] = incidents;
      _lastIncidentsFetch = now;

      return incidents;
    } else {
      throw Exception('Failed to load incidents: ${response.statusCode}');
    }
  } catch (e) {
    print('Error getting road incidents: $e');
    return [];
  }
}