public async Task<BusStaticData> GetStaticDataAsync()
{
if (s_staticData == null)
{
s_staticData = JsonConvert.DeserializeObject<BusStaticData>(await GetSerializedStaticDataAsync());
}
return s_staticData;
}
private static FavoriteStopViewModel ToViewModel(FavoriteStop favorite, BusStaticData staticData,
ClientBusSchedule schedule, DateTimeOffset currentTime)
{
var routeSchedules = schedule[favorite.Id]
.Where(rs => rs.Value.Any())
.OrderBy(rs => rs.Value.Aggregate(int.MaxValue, Math.Min))
.Take(2)
.ToList();
var firstRoute = routeSchedules.Count > 0 ? staticData.Routes[routeSchedules[0].Key] : null;
var secondRoute = routeSchedules.Count > 1 ? staticData.Routes[routeSchedules[1].Key] : null;
return new FavoriteStopViewModel
{
StopId = favorite.Id,
StopName = favorite.Name,
FirstRouteName = firstRoute != null ? firstRoute.RouteNo : string.Empty,
FirstRouteColor = firstRoute != null ? firstRoute.Color : string.Empty,
FirstRouteArrivals = routeSchedules.Count > 0 ? ToArrivalsSummary(routeSchedules[0].Value, currentTime) : "No arrivals!",
SecondRouteName = secondRoute != null ? secondRoute.RouteNo : string.Empty,
SecondRouteColor = secondRoute != null ? secondRoute.Color : string.Empty,
SecondRouteArrivals = routeSchedules.Count > 1 ? ToArrivalsSummary(routeSchedules[1].Value, currentTime) : string.Empty,
DistanceFromUser = double.IsNaN(favorite.DistanceFromUser) ? "" : $"{favorite.DistanceFromUser:F1} miles",
IsNearestStop = favorite.IsNearestStop
};
}
private static List<FavoriteStop> GetFavoriteStops(BusStaticData staticData, IEnumerable<int> stopIds, LatLong? optionalUserLocation)
{
var favoriteStops = stopIds.Where(staticData.Stops.ContainsKey).Select(id =>
{
var stop = staticData.Stops[id];
var distanceFromUser = optionalUserLocation != null
? DistanceTo(optionalUserLocation.Value.Lat, optionalUserLocation.Value.Lon, stop.Lat, stop.Long, 'M')
: double.NaN;
return new FavoriteStop(stop.ID, stop.Name, stop.RouteNames, distanceFromUser, isNearestStop: false);
})
.ToList();
var nearestStop = optionalUserLocation != null
? staticData.Stops.Values
.Aggregate((s1, s2) =>
DistanceTo(optionalUserLocation.Value.Lat, optionalUserLocation.Value.Lon, s1.Lat, s1.Long, 'M') <
DistanceTo(optionalUserLocation.Value.Lat, optionalUserLocation.Value.Lon, s2.Lat, s2.Long, 'M') ? s1 : s2)
: null;
if (nearestStop != null && !favoriteStops.Any(f => f.Id == nearestStop.ID))
{
var distanceFromUser = optionalUserLocation != null
? DistanceTo(optionalUserLocation.Value.Lat, optionalUserLocation.Value.Lon, nearestStop.Lat, nearestStop.Long, 'M')
: double.NaN;
favoriteStops.Add(new FavoriteStop(nearestStop.ID, nearestStop.Name, nearestStop.RouteNames,
distanceFromUser, isNearestStop: true));
}
favoriteStops.Sort((f1, f2) => f1.DistanceFromUser.CompareTo(f2.DistanceFromUser));
return favoriteStops;
}
public void SetStaticData(BusStaticData staticData)
{
s_staticData = staticData;
s_serializedStaticData = JsonConvert.SerializeObject(staticData);
File.WriteAllText(_staticDataPath, s_serializedStaticData);
}
