/// <summary>
/// Gets the cameras.
/// </summary>
/// <param name="cameraType">Type of the camera.</param>
/// <param name="name">The name.</param>
/// <returns></returns>
public IObservable<Camera> GetCameras(CameraType cameraType, string name)
{
var cachedCameras = new CachedEntity<List<Camera>>(string.Format("Services.Camera.{0}.{1}", cameraType, name));
return new AnonymousObservable<Camera>(observer =>
{
if (!cachedCameras.Value.Any() || !cachedCameras.CachedDateTime.HasValue || cachedCameras.CachedDateTime.Value <= DateTime.Now.AddDays(-1))
{
Uri cameraListUri = null;
if (cameraType == CameraType.Regional)
{
cameraListUri = new Uri(string.Format("{0}?roadway={1}", DfwTranstarUri.CamerasRegionalUri, name.Replace(' ', '_')));
}
else
{
cameraListUri = new Uri(string.Format("{0}?list={1}&roadway={2}", DfwTranstarUri.CamerasUri, cameraType.ToString().ToLower(), name.Replace(' ', '_')));
}
IObservable<string> observable = ObservableHelper.TextFromUri(cameraListUri);
var svc = observable.Subscribe(result =>
{
int tableStart = result.IndexOf("<table id=\"ListTable\"");
int tableEnd = result.IndexOf("</table>", tableStart);
XElement xmlDoc = XElement.Parse(result.Substring(tableStart, (tableEnd + 8) - tableStart));
var cameras = from item in xmlDoc.Element("tr").Element("td").Element("ul").Elements("li")
select new Camera
{
ID = this.GetCameraID(cameraType, item.Element("a").Attribute("href").Value),
Name = item.Value,
EnableThumbnails = ProfileCommon.UserSettings.ShowCameraThumbnails,
ImageUri = cameraType == CameraType.Regional ?
string.Format(DfwTranstarUri.CameraDetailRegionalUri, name.ToLower()
.Replace(" north", "")
.Replace(" south", "")
.Replace(" east", "")
.Replace(" west", ""),
this.GetCameraID(cameraType, item.Element("a").Attribute("href").Value)) :
string.Format(DfwTranstarUri.CameraDetailUri, this.GetCameraID(cameraType, item.Element("a").Attribute("href").Value))
};
cachedCameras.Value = cameras.ToList();
cachedCameras.Cache();
cachedCameras.Value.ToList().ForEach(c => observer.OnNext(c));
observer.OnCompleted();
},
ex =>
{
observer.OnError(new Exception("Unable to retrieve traffic data.", ex));
});
}
else
{
cachedCameras.Value.ToList().ForEach(c => observer.OnNext(c));
observer.OnCompleted();
}
return Disposable.Empty;
});
}
/// <summary>
/// Gets the roadway cameras.
/// </summary>
/// <param name="cameraType">Type of the camera.</param>
/// <returns></returns>
public IObservable<Roadway> GetRoadwayCameras(CameraType cameraType)
{
var cachedRoadways = new CachedEntity<List<Roadway>>("Services.RoadwayCameras." + cameraType.ToString());
return new AnonymousObservable<Roadway>(observer =>
{
if (!cachedRoadways.Value.Any() || cachedRoadways.CachedDateTime <= DateTime.Now.AddDays(-1))
{
Uri uri = null;
switch (cameraType)
{
case CameraType.Freeway:
uri = new Uri(DfwTranstarUri.CamerasUri);
break;
case CameraType.Street:
uri = new Uri(DfwTranstarUri.CamerasUri + "?list=street");
break;
case CameraType.Regional:
uri = new Uri(DfwTranstarUri.CamerasRegionalUri);
break;
}
IObservable<string> observable = ObservableHelper.TextFromUri(uri);
var svc = observable.Subscribe(result =>
{
int tableStart = result.IndexOf("<table id=\"ListTable\"");
int tableEnd = result.IndexOf("</table>", tableStart);
XElement xmlDoc = XElement.Parse(result.Substring(tableStart, (tableEnd + 8) - tableStart));
var roadways = from item in xmlDoc.Element("tr").Element("td").Element("ul").Elements("li")
select new Roadway
{
Name = item.Value,
IconUri = cameraType == CameraType.Freeway ?
this.GetRoadwayIconUri(item.Value) : "/Resources/Images/empty_svg_small.png"
};
cachedRoadways.Value = roadways.ToList();
cachedRoadways.Cache();
cachedRoadways.Value.ToList().ForEach(r => observer.OnNext(r));
observer.OnCompleted();
}, ex =>
{
observer.OnError(new Exception("Unable to retrieve traffic data.", ex));
});
}
else
{
cachedRoadways.Value.ToList().ForEach(r => observer.OnNext(r));
observer.OnCompleted();
}
return Disposable.Empty;
});
}
/// <summary>
/// Gets the road closures.
/// </summary>
/// <param name="refreshData">if set to <c>true</c> [refresh data].</param>
/// <returns></returns>
public IObservable<RoadClosure> GetRoadClosures(bool refreshData)
{
var cachedRoadClosures = new CachedEntity<RoadClosure>("Services.RoadClosures");
return new AnonymousObservable<RoadClosure>(observer =>
{
if (refreshData || !cachedRoadClosures.CachedDateTime.HasValue || cachedRoadClosures.CachedDateTime.Value <= DateTime.Now.AddMinutes(-15))
{
IObservable<string> observable = ObservableHelper.TextFromUri(new Uri(DfwTranstarUri.BaseUri + "/mobile/roadclosures.aspx"));
observable.Subscribe(result =>
{
RoadClosure roadClosure = new RoadClosure();
if (result != null)
{
int spanStart = result.IndexOf("<span id=\"RCMessage\"");
int spanEnd = result.IndexOf("</span>", spanStart);
string message = string.Empty;
if (spanStart > 0)
{
message = result.Substring(spanStart + 21, spanEnd - spanStart - 21).Trim()
.Replace("<br/>", "\n")
.Replace("<br />", "\n")
.Replace("</br>", "")
.Replace("<b>", "")
.Replace("</b>", "");
}
roadClosure.Closure = message;
}
cachedRoadClosures.Value = roadClosure;
cachedRoadClosures.Cache();
observer.OnNext(roadClosure);
observer.OnCompleted();
}, ex =>
{
observer.OnError(new Exception("Unable to retrieve traffic data.", ex));
},
() => { });
}
else
{
observer.OnNext(cachedRoadClosures.Value);
observer.OnCompleted();
}
return Disposable.Empty;
});
}
/// <summary>
/// Gets the incidents.
/// </summary>
/// <param name="refreshData">if set to <c>true</c> [refresh data].</param>
/// <returns></returns>
public IObservable<Incident> GetIncidents(bool refreshData)
{
var cachedIncidents = new CachedEntity<List<Incident>>("Services.Incidents");
return new AnonymousObservable<Incident>(observer =>
{
if (refreshData || !cachedIncidents.Value.Any() || cachedIncidents.CachedDateTime <= DateTime.Now.AddMinutes(-10))
{
IObservable<string> observable = ObservableHelper.TextFromUri(new Uri(string.Format("{0}?CenterId={1}", DfwTranstarUri.IncidentsUri, TrafficCenter.DalTrans)));
var svc = observable.Subscribe(result =>
{
List<Incident> incidents;
int indexStart = result.IndexOf("<span id=\"LabelTime\"");
int indexEnd = result.IndexOf("</span>", indexStart);
var incidentTime = result.Substring(indexStart + 21, indexEnd - indexStart - 21);
indexStart = result.IndexOf("<ul id=\"IncidentList\"");
if (indexStart > 0)
{
indexEnd = result.IndexOf("</ul>", indexStart);
XElement xmlDoc = XElement.Parse(result.Substring(indexStart, (indexEnd + 5) - indexStart));
incidents = (from item in xmlDoc.Elements("li")
select new Incident
{
Title = item.Value,
PublishedDate = DateTime.Parse(string.Format("{0:d} {1}", DateTime.Today, incidentTime))
}).ToList();
}
else
{
incidents = new List<Incident>();
incidents.Add(new Incident() { Title = "No incidents found",
PublishedDate = DateTime.Parse(string.Format("{0:d} {1}", DateTime.Today, incidentTime)) });
}
cachedIncidents.Value = incidents.ToList();
cachedIncidents.Cache();
incidents.ToList().ForEach(i => observer.OnNext(i));
observer.OnCompleted();
}, ex =>
{
observer.OnError(new Exception("Unable to retrieve traffic data.", ex));
});
}
else
{
cachedIncidents.Value.ToList().ForEach(i => observer.OnNext(i));
observer.OnCompleted();
}
return Disposable.Empty;
});
}
/// <summary>
/// Gets the construction closures.
/// </summary>
/// <param name="roadway">The roadway.</param>
/// <returns></returns>
public IObservable<ConstructionClosure> GetConstructionClosures(string roadway)
{
var cachedConstructionClosures = new CachedEntity<ConstructionClosure>("Services.ConstructionClosures." + roadway.Replace(" ", "."));
return new AnonymousObservable<ConstructionClosure>(observer =>
{
if (!cachedConstructionClosures.CachedDateTime.HasValue || cachedConstructionClosures.CachedDateTime.Value <= DateTime.Now.AddDays(-1))
{
IObservable<string> observable = ObservableHelper.TextFromUri(new Uri(string.Format("{0}?roadway={1}",
DfwTranstarUri.ConstructionClosure, roadway.Replace(" ", "_"))));
observable.Subscribe(result =>
{
ConstructionClosure constructionClosure = new ConstructionClosure() { Roadway = roadway };
if (result != null)
{
int spanStart = result.IndexOf("<span id=\"CurrentConstruction\"");
int spanEnd = result.IndexOf("</span>", spanStart);
string message = string.Empty;
if (spanStart > 0)
{
message = result.Substring(spanStart + 31, spanEnd - spanStart - 31).Trim()
.Replace("<br/>", "\n")
.Replace("<br />", "\n")
.Replace("</br>", ""); ;
}
constructionClosure.Message = message;
}
cachedConstructionClosures.Value = constructionClosure;
cachedConstructionClosures.Cache();
observer.OnNext(constructionClosure);
observer.OnCompleted();
}, ex =>
{
observer.OnError(new Exception("Unable to retrieve traffic data.", ex));
},
() => { });
}
else
{
observer.OnNext(cachedConstructionClosures.Value);
observer.OnCompleted();
}
return Disposable.Empty;
});
}
/// <summary>
/// Gets the incidents.
/// </summary>
/// <param name="refreshData">if set to <c>true</c> [refresh data].</param>
/// <returns></returns>
public IObservable<Incident> GetIncidents(bool refreshData)
{
var cachedIncidents = new CachedEntity<List<Incident>>("Services.Incidents");
return new AnonymousObservable<Incident>(observer =>
{
if (refreshData || !cachedIncidents.Value.Any() || cachedIncidents.CachedDateTime <= DateTime.Now.AddMinutes(-10))
{
IObservable<string> observable = ObservableHelper.TextFromUri(new Uri(HoustonTranstarUri.IncidentsUri));
var svc = observable.Subscribe(result =>
{
XElement xmlDoc = XElement.Parse(result);
string title = (string)xmlDoc.Element("channel").Element("title");
var incidents = from item in xmlDoc.Element("channel").Elements("item")
select new Incident
{
Title = (string)item.Element("title"),
PublishedDate = item.Element("pubDate") != null ? ((DateTime)item.Element("pubDate")).ToLocalTime() : DateTime.MinValue
};
cachedIncidents.Value = incidents.ToList();
cachedIncidents.Cache();
incidents.ToList().ForEach(i => observer.OnNext(i));
observer.OnCompleted();
}, ex =>
{
observer.OnError(new Exception("Unable to retrieve traffic data.", ex));
});
}
else
{
cachedIncidents.Value.ToList().ForEach(i => observer.OnNext(i));
observer.OnCompleted();
}
return Disposable.Empty;
});
}