/// <summary>
/// Get data from NOW including LIVE data (when network online)
/// </summary>
public ArrivalMonitor(BusStop stop) : this(stop, DateTime.Now)
{
liveMode = true;
db = BusDB_GTFS_SQL.Instance;
fetcher = new LiveArrivalFetcher(myStop);
fetcher.ArrivalsUpdated += new LiveArrivalFetcher.ArrivalObserver(receiveLiveResults);
}
/// <summary>
/// Get data from NOW including LIVE data (when network online)
/// </summary>
public ArrivalMonitor(BusStop stop)
: this(stop, DateTime.Now)
{
liveMode = true;
db = BusDB_GTFS_SQL.Instance;
fetcher = new LiveArrivalFetcher (myStop);
fetcher.ArrivalsUpdated += new LiveArrivalFetcher.ArrivalObserver (receiveLiveResults);
}
/// <summary>
/// USED IN LIVE MODE
/// Receives the live results from the live fetcher
/// reconciled with scheduled data and notifies observers
/// </summary>
private void receiveLiveResults(LiveArrivalFetcher fetcher, ArrivalEvent e)
{
if (fetcher != this.fetcher || !liveMode) //verify this is the correct fetcher
{
return;
}
List <Arrival> masterList = new List <Arrival> ();
if (e.Error) //don't propagate the live error (whatever it was). Just return only the schedule data.
{
results = getDataScheduleNow();
notify();
return;
}
List <Arrival> liveData = e.Arrivals;
var scheduled = db.getNextArrivals(myStop.stopId, aheadTime, DateTime.Now);
//go through scheduled list and keep buses (by full name) that are not in live
foreach (Arrival sAr in scheduled)
{
bool contains = false;
foreach (Arrival lAr in liveData)
{
if (lAr.Destination == sAr.Destination) //found bus with matching nmae
{
contains = true;
break;
}
}
if (!contains && sAr.Time < DateTime.Now.Add(aheadTime)) //also check whether within timeframe
{
masterList.Add(sAr); //add scheduled arrival since live data not tracking that bus
}
}
//merge with livedata that is within after and ahead window
masterList.AddRange(liveData.Where((x) => (x.Time > afterTime && x.Time < DateTime.Now.Add(aheadTime))));
masterList.Sort();
results = masterList;
notify();
}
/// <summary>
/// USED IN LIVE MODE
/// Receives the live results from the live fetcher
/// reconciled with scheduled data and notifies observers
/// </summary>
private void receiveLiveResults(LiveArrivalFetcher fetcher, ArrivalEvent e)
{
if (fetcher != this.fetcher || !liveMode)//verify this is the correct fetcher
return;
List<Arrival> masterList = new List<Arrival> ();
if (e.Error) {//don't propagate the live error (whatever it was). Just return only the schedule data.
results = getDataScheduleNow ();
notify ();
return;
}
List<Arrival> liveData = e.Arrivals;
var scheduled = db.getNextArrivals (myStop.stopId, aheadTime, DateTime.Now);
//go through scheduled list and keep buses (by full name) that are not in live
foreach (Arrival sAr in scheduled) {
bool contains = false;
foreach (Arrival lAr in liveData) {
if (lAr.Destination == sAr.Destination) {//found bus with matching nmae
contains = true;
break;
}
}
if (!contains && sAr.Time < DateTime.Now.Add (aheadTime))//also check whether within timeframe
masterList.Add (sAr);//add scheduled arrival since live data not tracking that bus
}
//merge with livedata that is within after and ahead window
masterList.AddRange (liveData.Where ((x) => (x.Time > afterTime && x.Time < DateTime.Now.Add (aheadTime))));
masterList.Sort ();
results = masterList;
notify ();
}
public void SetUp()
{
fetcher = new LiveArrivalFetcher(new BusStop("Colony Manor", 3382, new MonoTouch.CoreLocation.CLLocation(40,-70)));
}
