private static async Task SubscribeAllAsync()
{
using (subscriptionsLock.Lock())
{
if (endpoints.Count == 0)
{
await GetEndpointsAsync().ConfigureAwait(false);
}
if (subscriptions.Count != 0)
{
await UnsubscribeAllAsync().ConfigureAwait(false);
}
Action <dynamic> callback = AlexaPropertyChanged;
using (endpointsLock.Lock())
{
foreach (DiscoveryEndpoint discoveryEndpoint in endpoints)
{
Guid premiseId = new Guid(discoveryEndpoint.endpointId);
IPremiseObject endpoint = await HomeObject.GetObjectAsync(premiseId.ToString("B")).ConfigureAwait(false);
if (!endpoint.IsValidObject())
{
await NotifyErrorAsync(EventLogEntryType.Warning, $"Cannot find object {discoveryEndpoint.friendlyName} ({premiseId.ToString()})to subscribe on premise server.", 250).ConfigureAwait(false);
continue;
}
// use reflection to instantiate all device type controllers
var interfaceType = typeof(IAlexaDeviceType);
var all = AppDomain.CurrentDomain.GetAssemblies()
.SelectMany(x => x.GetTypes())
.Where(x => interfaceType.IsAssignableFrom(x) && !x.IsInterface && !x.IsAbstract)
.Select(Activator.CreateInstance);
foreach (IAlexaDeviceType deviceType in all)
{
Dictionary <string, IPremiseSubscription> subs =
deviceType.SubscribeToSupportedProperties(endpoint, discoveryEndpoint, callback);
foreach (string key in subs.Keys)
{
subscriptions.Add(key, subs[key]);
}
}
}
}
}
}
public static void AlexaPropertyChanged(dynamic @params)
{
Subscription sub = (Subscription)@params;
using (deDupeLock.Lock())
{
// Premise can send multiple notifications for a single object, one for each
// subscribed property that changes. The state report function here will capture
// states of all properties, so the DeDupeDictionary prevents multiple state reports
// from being sent for essentially the same event.
if (DeDupeDictionary.ContainsKey(sub.sysObjectId))
{
return;
}
DeDupeDictionary.Add(sub.sysObjectId, sub);
}
Task.Run(() =>
{
// get the endpoint and endpoint capabilities
Guid premiseId = new Guid(sub.sysObjectId);
IPremiseObject endpoint = HomeObject.GetObjectAsync(premiseId.ToString("B")).GetAwaiter().GetResult();
if (!endpoint.IsValidObject())
{
return;
}
DiscoveryEndpoint discoveryEndpoint = GetDiscoveryEndpointAsync(endpoint).GetAwaiter().GetResult();
if (discoveryEndpoint == null)
{
return;
}
// get the authorization code for the notification
string authCode;
using (asyncObjectsLock.Lock())
{
authCode = (string)HomeObject.GetValueAsync("AlexaAsyncAuthorizationCode").GetAwaiter().GetResult();
}
// build the change report
AlexaChangeReport changeReport = new AlexaChangeReport();
[email protected] = Guid.NewGuid().ToString("D");
[email protected].@namespace = "Alexa";
[email protected] = "3";
[email protected] = "BearerToken";
[email protected] = authCode;
[email protected] = premiseId.ToString("D").ToUpper();
[email protected] = discoveryEndpoint.cookie;
[email protected] = "PHYSICAL_INTERACTION";
// get the device type and controller (e.g. AlexaAV, AlexaHVAC)
IAlexaDeviceType deviceType = null;
IAlexaController controller = null;
List <AlexaProperty> relatedPropertyStates = null;
bool hasScene = false;
foreach (IAlexaController controllerToTest in Controllers.Values)
{
if (!controllerToTest.HasPremiseProperty(sub.propertyName))
{
continue;
}
controller = controllerToTest;
Type type = Type.GetType(controller.GetAssemblyTypeName());
if (type == null)
{
continue;
}
// found a controller, get an instance of the assembly
deviceType = (IAlexaDeviceType)Activator.CreateInstance(type);
// Determine if this deviceType supports the desired capability
// note: This handles situation where the same property name is used by different
// controllers. e.g. "brightness" is used in both ColorController and BrightnessController
relatedPropertyStates = deviceType.FindRelatedProperties(endpoint, "");
foreach (AlexaProperty property in relatedPropertyStates)
{
// if so, this is the correct type
if (property.@namespace == controller.GetNameSpace())
{
break;
}
}
}
// ReSharper disable once ConditionIsAlwaysTrueOrFalse
if ((deviceType == null) || (controller == null || relatedPropertyStates == null))
{
return;
}
foreach (AlexaProperty prop in relatedPropertyStates)
{
if (prop.@namespace == "Alexa.SceneController")
{
hasScene = true;
continue;
}
if (([email protected] == 0) && (prop.name == controller.MapPremisePropertyToAlexaProperty(sub.propertyName)))
{
[email protected](prop);
}
else
{
string propKey = prop.@namespace + "." + prop.name;
changeReport.context.propertiesInternal.Add(propKey, prop);
}
}
[email protected] = "ChangeReport";
// scenes are special case
if (hasScene)
{
AlexaSetSceneController sceneController = new AlexaSetSceneController(endpoint);
changeReport = sceneController.AlterChangeReport(changeReport);
}
StateChangeReportWrapper item = new StateChangeReportWrapper
{
ChangeReport = changeReport
};
stateReportQueue.Enqueue(item);
using (deDupeLock.Lock())
{
DeDupeDictionary.Remove(sub.sysObjectId);
}
});
}
