public ActionResult Index()
{
if (User.Identity.IsAuthenticated)
{
// Get user's id for token cache.
ViewBag.CurrentUserId = User.FindFirst(Startup.ObjectIdentifierType)?.Value;
//Store the notifications in session state. A production
//application would likely queue for additional processing.
//Store the notifications in application state. A production
//application would likely queue for additional processing.
ConcurrentBag <Notification> notificationArray = NotificationsStore.GetNotifications();
if (notificationArray == null)
{
notificationArray = new ConcurrentBag <Notification>();
}
NotificationsStore.SaveNotifications(notificationArray);
return(View(notificationArray));
}
return(View());
}
public ActionResult Listen()
{
StringValues queryValues;
// Validate the new subscription by sending the token back to Microsoft Graph.
// This response is required for each subscription.
if (Request.Query.TryGetValue("validationToken", out queryValues))
{
string token = queryValues.First();
return(Content(token, "plain/text"));
}
// Parse the received notifications.
else
{
try
{
using (var inputStream = new System.IO.StreamReader(Request.Body))
{
JObject jsonObject = JObject.Parse(inputStream.ReadToEnd());
if (jsonObject != null)
{
// Notifications are sent in a 'value' array. The array might contain multiple notifications for events that are
// registered for the same notification endpoint, and that occur within a short time span.
JArray value = JArray.Parse(jsonObject["value"].ToString());
foreach (var notification in value)
{
Notification current = JsonConvert.DeserializeObject <Notification>(notification.ToString());
// Check client state to verify the message is from Microsoft Graph.
SubscriptionStore subscription = SubscriptionStore.GetSubscriptionInfo(current.SubscriptionId);
// This sample only works with subscriptions that are still cached.
if (subscription != null)
{
if (current.ClientState == subscription.ClientState)
{
//Store the notifications in application state. A production
//application would likely queue for additional processing.
ConcurrentBag <Notification> notificationArray = NotificationsStore.GetNotifications();
if (notificationArray == null)
{
notificationArray = new ConcurrentBag <Notification>();
}
notificationArray.Add(current);
NotificationsStore.SaveNotifications(notificationArray);
//TempData["notifications"] = JsonConvert.SerializeObject(notificationArray);
}
}
}
}
}
}
catch (Exception)
{
// TODO: Handle the exception.
// Still return a 202 so the service doesn't resend the notification.
}
return(new StatusCodeResult(202));
}
}
