/// <summary>
/// Creates the region bounds.
/// </summary>
/// <param name="boundsElement">The bounds element</param>
public RegionBounds(XElement boundsElement)
{
this.regionLatitude = boundsElement.GetFirstElementValue<double>("lat");
this.regionLatitudeSpan = boundsElement.GetFirstElementValue<double>("latSpan");
this.regionLongitude = boundsElement.GetFirstElementValue<double>("lon");
this.regionLongitudeSpan = boundsElement.GetFirstElementValue<double>("lonSpan");
}
/// <summary>
/// Creates the trip stop.
/// </summary>
public TripStop(XElement tripStopElement, DateTime serverTime)
{
//<tripStopTime>
//<arrivalTime>83942</arrivalTime>
//<departureTime>83942</departureTime>
//<stopId>1_35324</stopId>
//<distanceAlongTrip>13566.594707177532</distanceAlongTrip>
//</tripStopTime>
// Note - this time is different from all the other times :)
// from the documentation:
// http://developer.onebusaway.org/modules/onebusaway-application-modules/current/api/where/elements/trip-details.html
// "•arrivalTime - time, in seconds since the start of the service date, when the trip arrives at the specified stop"
var timeSpan = new TimeSpan(0, 0, tripStopElement.GetFirstElementValue<int>("arrivalTime"));
this.ArrivalTime = (new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day)).AddSeconds(timeSpan.TotalSeconds);
// Try and find the stop in the owning document for this trip:
string stopId = tripStopElement.GetFirstElementValue<string>("stopId");
XElement stopElement = (from currentStopElement in tripStopElement.Document.Descendants("stop")
where string.Equals(stopId, currentStopElement.GetFirstElementValue<string>("id"), StringComparison.OrdinalIgnoreCase)
select currentStopElement).FirstOrDefault();
if (stopElement != null)
{
base.ParseStopElement(stopElement);
}
}
public ScheduleStopTime(DateTime serverTime, XElement scheduleStopTimeElement)
{
//<scheduleStopTime>
//<arrivalEnabled>true</arrivalEnabled>
//<arrivalTime>1356615606000</arrivalTime>
//<departureEnabled>true</departureEnabled>
//<departureTime>1356615606000</departureTime>
//<serviceId>1_WEEKDAY</serviceId>
//<tripId>1_21912615</tripId></scheduleStopTime>
//</scheduleStopTime>
// IMPORTANT: the schedule time that we get from OBA is
// relative to the time on the server. So for instance, the arrival
// time may be 5:00pm, but that is relative to the server
// time which may be 3:00pm. What that means is that the
// bus' arrival time is actually 2 hours from now, so to
// make the time relative to the client we take the difference
// in minutes between the arrival time and the server time
// and then add it to the current time.
var arrivalTime = scheduleStopTimeElement.GetFirstElementValue<long>("arrivalTime").ToDateTime();
var arrivalTimeInMinutes = (arrivalTime - serverTime).TotalMinutes;
this.ArrivalTime = DateTime.Now.AddMinutes(arrivalTimeInMinutes);
this.TripId = scheduleStopTimeElement.GetFirstElementValue<string>("tripId");
}
/// <summary>
/// Creates the region.
/// </summary>
/// <param name="regionElement">The region element.</param>
public Region(XElement regionElement)
{
this.RegionName = regionElement.GetFirstElementValue<string>("regionName");
this.RegionUrl = regionElement.GetFirstElementValue<string>("obaBaseUrl");
this.SupportsObaRealtimeApis = regionElement.GetFirstElementValue<bool>("supportsObaRealtimeApis");
this.SupportsObaDiscoveryApis = regionElement.GetFirstElementValue<bool>("supportsObaDiscoveryApis");
this.IsActive = regionElement.GetFirstElementValue<bool>("active");
this.RegionBounds = new List<RegionBounds>(from boundsElement in regionElement.Descendants("bound")
select new RegionBounds(boundsElement));
}
public Agency(XElement agencyElement)
{
// xml for agency:
// <agency>
// <id>1</id>
// <name>Metro Transit</name>
// <url>http://metro.kingcounty.gov</url>
// <timezone>America/Los_Angeles</timezone>
// <lang>en</lang>
// <phone>206-553-3000</phone>
// <disclaimer>Transit scheduling, geographic, and real-time data provided by permission of King County. Some real-time info provided by UW Intelligent Transportation Systems.</disclaimer>
// <privateService>false</privateService>
// </agency>
this.Id = agencyElement.GetFirstElementValue<string>("id");
this.Name = agencyElement.GetFirstElementValue<string>("name");
this.WebsiteUri = agencyElement.GetFirstElementValue<string>("url");
this.PhoneNumber = agencyElement.GetFirstElementValue<string>("phone");
this.Disclaimer = agencyElement.GetFirstElementValue<string>("disclaimer");
}
protected void ParseStopElement(XElement stopElement)
{
// Xml for a stop:
//<stop>
// <id>3_3465</id>
// <lat>47.610756</lat>
// <lon>-122.337204</lon>
// <direction>NW</direction>
// <name>4th / Pike</name>
// <code>3465</code>
// <locationType>0</locationType>
// <routeIds>
// <string>40_590</string>
// <string>40_592</string>
// <string>40_594</string>
// <string>40_595</string>
// </routeIds>
// </stop>
this.StopId = stopElement.GetFirstElementValue<string>("id");
this.Latitude = stopElement.GetFirstElementValue<double>("lat");
this.Longitude = stopElement.GetFirstElementValue<double>("lon");
this.Direction = stopElement.GetFirstElementValue<string>("direction");
this.Name = stopElement.GetFirstElementValue<string>("name");
this.Code = stopElement.GetFirstElementValue<string>("code");
HashSet<string> routeIds = new HashSet<string>(from routeString in stopElement.Element("routeIds").Descendants("string")
select routeString.Value);
// The routes are stored at the begining of the document:
this.Routes = (from routeElement in stopElement.Document.Descendants("route")
where routeIds.Contains(routeElement.GetFirstElementValue<string>("id"))
select new Route(routeElement)).ToArray();
}
public Route(XElement routeElement)
{
// Xml for route:
// <route>
// <id>1_43</id>
// <shortName>43</shortName>
// <description>cbd/u-district</description>
// <type>3</type>
// <url>http://metro.kingcounty.gov/tops/bus/schedules/s043_0_.html</url>
// <agency>
// <id>1</id>
// <name>Metro Transit</name>
// <url>http://metro.kingcounty.gov</url>
// <timezone>America/Los_Angeles</timezone>
// <lang>en</lang>
// <phone>206-553-3000</phone>
// <disclaimer>Transit scheduling, geographic, and real-time data provided by permission of King County. Some real-time info provided by UW Intelligent Transportation Systems.</disclaimer>
// <privateService>false</privateService>
// </agency>
// </route>
this.Id = routeElement.GetFirstElementValue<string>("id");
this.ShortName = routeElement.GetFirstElementValue<string>("shortName");
this.Description = routeElement.GetFirstElementValue<string>("description");
this.ScheduleUri = routeElement.GetFirstElementValue<string>("url");
if (string.IsNullOrEmpty(this.Description))
{
this.Description = routeElement.GetFirstElementValue<string>("longName");
}
// Throw if there is no agency. There should always be an agency:
var agencyElement = routeElement.Descendants("agency").FirstOrDefault();
if (agencyElement != null)
{
this.Agency = new Agency(agencyElement);
}
}
/// <summary>
/// Creates the region.
/// </summary>
/// <param name="regionElement">The region element.</param>
public Region(XElement regionElement)
{
this.RegionName = regionElement.GetFirstElementValue<string>("regionName");
this.RegionUrl = regionElement.GetFirstElementValue<string>("obaBaseUrl");
this.SupportsObaRealtimeApis = regionElement.GetFirstElementValue<bool>("supportsObaRealtimeApis");
this.SupportsObaDiscoveryApis = regionElement.GetFirstElementValue<bool>("supportsObaDiscoveryApis");
this.IsActive = regionElement.GetFirstElementValue<bool>("active");
this.RegionBounds = new List<RegionBounds>(from boundsElement in regionElement.Descendants("bound")
select new RegionBounds(boundsElement));
// Append api/where when neccessary:
if (!this.RegionUrl.EndsWith("api/where/"))
{
// If the URI we get back is missing a backslash, add it first:
if (!String.IsNullOrEmpty(this.RegionUrl) && !this.RegionUrl.EndsWith("/"))
{
this.RegionUrl += "/";
}
this.RegionUrl += "api/where";
}
}
/// <summary>
/// Creates a shape out of a google encoded uri. This code was taken from the WP7 OneBusAway
/// client -
///
/// http://onebusawaywp7.codeplex.com/SourceControl/changeset/view/94877#1472108
///
/// Google documentation on polyline decoding:
///
/// http://code.google.com/apis/maps/documentation/polylinealgorithm.html
///
/// </summary>
public Shape(XElement encodedPolylineElement)
{
string encoded = encodedPolylineElement.GetFirstElementValue<string>("points");
int index = 0;
int latitude = 0;
int longitude = 0;
int length = encoded.Length;
List<Point> pointList = new List<Point>();
while (index < length)
{
latitude += DecodePoint(encoded, index, out index);
longitude += DecodePoint(encoded, index, out index);
Point point = new Point();
point.Latitude = (latitude * 1e-5);
point.Longitude = (longitude * 1e-5);
pointList.Add(point);
}
this.Points = pointList.ToArray();
}
/// <summary>
/// Creates the tracking data out of an arrival and departure element.
/// </summary>
public TrackingData(DateTime serverTime, string stopId, string stopName, XElement arrivalAndDepartureElement)
{
this.RouteId = arrivalAndDepartureElement.GetFirstElementValue<string>("routeId");
this.TripId = arrivalAndDepartureElement.GetFirstElementValue<string>("tripId");
this.TripHeadsign = arrivalAndDepartureElement.GetFirstElementValue<string>("tripHeadsign");
this.StopName = stopName;
this.StopId = stopId;
this.Context = OneStop;
scheduledArrivalTime = arrivalAndDepartureElement.GetFirstElementValue<long>("scheduledArrivalTime").ToDateTime();
this.ScheduledArrivalInMinutes = (scheduledArrivalTime - serverTime).Minutes;
long predictedTime = arrivalAndDepartureElement.GetFirstElementValue<long>("predictedArrivalTime");
if (predictedTime > 0)
{
DateTime predictedArrivalDateTime = predictedTime.ToDateTime();
this.PredictedArrivalInMinutes = (predictedArrivalDateTime - serverTime).Minutes;
}
else
{
this.PredictedArrivalInMinutes = this.scheduledArrivalInMinutes;
}
this.scheduledArrivalTime = DateTime.Now.AddMinutes(this.scheduledArrivalInMinutes);
this.predictedArrivalTime = DateTime.Now.AddMinutes(this.predictedArrivalInMinutes);
int difference = this.predictedArrivalInMinutes - this.scheduledArrivalInMinutes;
if (difference > 0)
{
this.status = "DELAY";
}
else
{
this.status = "ON TIME";
}
// Grab the route element from the document and parse it into a Route object:
var routeElements = (from routeElement in arrivalAndDepartureElement.Document.Descendants("route")
where routeElement.GetFirstElementValue<string>("id") == this.RouteId
select routeElement).ToList();
this.Route = new Route(routeElements[0]);
this.stopAndRoute = new StopAndRoutePair(this);
}
/// <summary>
/// Creates a schedule out of a scheduleStopTimesElement.
/// </summary>
public StopRouteSchedule(DateTime serverTime, XElement stopRouteDirectionScheduleElement)
{
this.TripHeadsign = stopRouteDirectionScheduleElement.GetFirstElementValue<string>("tripHeadsign");
this.ScheduleStopTimes = (from scheduleStopTimeElement in stopRouteDirectionScheduleElement.Descendants("scheduleStopTime")
select new ScheduleStopTime(serverTime, scheduleStopTimeElement)).ToArray();
}
/// <summary>
/// Creates the trip details.
/// </summary>
public TripDetails(XElement entryElement, DateTime serverTime)
{
//<entry class="tripDetails">
// <tripId>40_21580184</tripId>
// <serviceDate>1357113600000</serviceDate>
// <status>
// <activeTripId>40_21580184</activeTripId>
// <blockTripSequence>0</blockTripSequence>
// <serviceDate>1357113600000</serviceDate>
// <scheduledDistanceAlongTrip>4200.542521894713</scheduledDistanceAlongTrip>
// <totalDistanceAlongTrip>31368.062697873433</totalDistanceAlongTrip>
// <position>
// <lat>47.62131784992367</lat>
// <lon>-122.32801704050095</lon>
// </position>
// <orientation>100.26638970466908</orientation>
// <closestStop>1_1070</closestStop>
// <closestStopTimeOffset>-98</closestStopTimeOffset>
// <nextStop>1_71350</nextStop>
// <nextStopTimeOffset>434</nextStopTimeOffset>
// <status>default</status>
// <predicted>true</predicted>
// <lastUpdateTime>1357166368000</lastUpdateTime>
// <lastKnownLocation>
// <lat>47.61576461791992</lat>
// <lon>-122.33000946044922</lon>
// </lastKnownLocation>
// <scheduleDeviation>660</scheduleDeviation>
// <distanceAlongTrip>4200.542521894713</distanceAlongTrip>
// <vehicleId>40_9616</vehicleId>
// </status>
//</entry>
this.TripId = entryElement.GetFirstElementValue<string>("tripId");
this.VehicleId = entryElement.GetFirstElementValue<string>("vehicleId");
this.ClosestStopId = entryElement.GetFirstElementValue<string>("closestStop");
this.NextStopId = entryElement.GetFirstElementValue<string>("nextStop");
var lastKnownLocationElement = entryElement.Descendants("lastKnownLocation").FirstOrDefault();
if (lastKnownLocationElement != null)
{
this.KnownLatitude = lastKnownLocationElement.GetFirstElementValue<double>("lat");
this.KnownLongitude = lastKnownLocationElement.GetFirstElementValue<double>("lon");
}
this.TripStops = (from tripStopElement in entryElement.Descendants("tripStopTime")
select new TripStop(tripStopElement, serverTime)).ToArray();
// We need to mark the trip stops according to the real time data:
bool hasReachedStop = true;
foreach (var tripStop in this.TripStops)
{
if(string.Equals(tripStop.StopId, this.NextStopId, StringComparison.OrdinalIgnoreCase))
{
hasReachedStop = false;
}
if (string.Equals(tripStop.StopId, this.ClosestStopId, StringComparison.OrdinalIgnoreCase))
{
tripStop.IsClosestStop = true;
}
tripStop.HasReachedStop = hasReachedStop;
}
}
