Implement deleting notification from OneSignal

Author: reloni

src/SimpleToDoService/Common/PushNotificationScheduler.cs

@@ -25,14 +25,25 @@ public async System.Threading.Tasks.Task SchedulePushNotification(Task task)
 			if (currentNotification?.DueDate == task.CheckedTargetDate())
 				return;
 
-			DeletePushNotification(currentNotification);
+			await DeletePushNotification(currentNotification);
 			await CreatePushNotification(task);
 		}
 
-		void DeletePushNotification(PushNotification notification)
+		async System.Threading.Tasks.Task DeletePushNotification(PushNotification notification)
 		{
 			if (notification == null)
 				return;
+
+			var url = String.Format("https://onesignal.com/api/v1/notifications/{0}?app_id={1}",
+			                        notification.ServiceId.ToString(), Environment.GetEnvironmentVariable("ONE_SIGNAL_KEY"));
+			var request = WebRequest.Create(url) as HttpWebRequest;
+
+			request.Method = "DELETE";
+			request.Headers["authorization"] = String.Format("Basic {0}", Environment.GetEnvironmentVariable("ONE_SIGNAL_KEY"));
+
+			await request.GetResponseAsync();
+
+			repository.DeletePushNotification(notification);
 		}
 
 		async System.Threading.Tasks.Task CreatePushNotification(Task task)

src/SimpleToDoService/Database/Repositiory.cs

@@ -21,6 +21,7 @@ public interface IToDoRepository
 		User UpdateUser(User user);
 		PushNotification CreatePushNotification(PushNotification notification);
 		IEnumerable<PushNotification> PushNotifications(Task task);
+		bool DeletePushNotification(PushNotification notification);
 	}
 
 	public class ToDoRepository : IToDoRepository
@@ -148,5 +149,21 @@ public IEnumerable<PushNotification> PushNotifications(Task task)
 			return context.PushNotifications.Where(o => o.TaskUuid == task.Uuid);
 
 		}
+
+		public bool DeletePushNotification(PushNotification notification)
+		{
+			context.PushNotifications.Remove(notification);
+
+			try
+			{
+				context.SaveChanges();
+			}
+			catch
+			{
+				return false;
+			}
+
+			return true;
+		}
 	}
 }