// Finds the closest stop for the given route name and gets arrival data for that stop
// Returns a list of DateTimes for the timezone of the given lat/lon
public async Task <List <double> > GetArrivalTimesForRouteName(string routeShortName, string lat, string lon, DateTime time)
{
// validate lat,lon inputs
GeocodeHelpers.ValidateLatLon(lat, lon);
// find the route object for the given name and the closest stop for that route
// demo tuples
(Route, Stop)info = await GetRouteAndStopForLocation(routeShortName, lat, lon);
List <ArrivalsAndDeparture> arrivalData = await GetArrivalsAndDepartures(info.Item2.Id, info.Item1.ShortName);
var universalTime = time.ToUniversalTime();
IEnumerable <DateTime> query = from a in arrivalData
select BusHelpers.ConvertMillisecondsToUTC(a.PredictedArrivalTime);
//demo sourcelink
var busTimes = arrivalData.Select(a => BusHelpers.ConvertMillisecondsToUTC(a.PredictedArrivalTime)).Take(3);
var timeUntil = new List <double>();
foreach (var t in busTimes)
{
var delta = t - universalTime;
//demo had to add in the Round bc was off in decimals
var min = Math.Round(delta.TotalMinutes, 1);
timeUntil.Add(min);
//timeUntil.Add(delta.TotalMinutes);
}
return(timeUntil);
}
// Finds the bus route that matches the route short name and finds the closest
// bus stop that contains the route.
// Returns a tuple of the user's Route and the nearest Stop in a 1800-meter radius
public async Task <(Route route, Stop stop)> GetRouteAndStopForLocation(string routeShortName, string lat, string lon)
{
(Route, List <Stop> stops)routeAndStops = await GetStopsForRoute(routeShortName, lat, lon);
if (routeAndStops.Item1 == null || routeAndStops.Item2 == null)
{
throw new ArgumentException("No stops were found within a mile of your location for your bus route.");
}
//Stop minDistStop = routeAndStops.Item2.First();
// demo pythia in claculate distance
// demo linq query to foreach (want to step into method, so to set easier breakpoint convert to foreach)
//var minDistance = routeAndStops.stops.Min(s => GeocodeHelpers.CalculateDistance(lat, lon, s.Lat, s.Lon));
var min = (from stop in routeAndStops.stops select GeocodeHelpers.CalculateDistance(lat, lon, stop.Lat, stop.Lon)).Min();
Stop minDistStop = routeAndStops.stops.Where(x => GeocodeHelpers.CalculateDistance(lat, lon, x.Lat, x.Lon) == min).FirstOrDefault();
return(routeAndStops.Item1, minDistStop);
}
