Add unregister functionality.

Author: sanyandreichuk

sdk/Notifo.SDK/NotifoMobilePush/INotifoMobilePush.cs

@@ -56,5 +56,10 @@ public partial interface INotifoMobilePush : INotifoClient
         /// Register for notifications on demand.
         /// </summary>
         void Register();
+
+        /// <summary>
+        /// Unregister notifications on demand.
+        /// </summary>
+        void Unregister();
     }
 }

sdk/Notifo.SDK/NotifoMobilePush/NotifoMobilePushImplementation.shared.cs

@@ -173,6 +173,24 @@ public void Register()
             }
         }
 
+        public void Unregister()
+        {
+            try
+            {
+                string token = settings.Token;
+                if (!string.IsNullOrWhiteSpace(token))
+                {
+                    _ = MobilePush.DeleteTokenAsync(token);
+                }
+
+                settings.Clear();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, Strings.TokenRemoveFailException);
+            }
+        }
+
         private void PushEventsProvider_OnNotificationReceived(object sender, NotificationEventArgs e)
         {
             // we are tracking notifications only for Android here because it is the entry point for all notifications that the Android device receives

sdk/Notifo.SDK/Resources/Strings.Designer.cs

@@ -156,6 +156,9 @@
   <data name="TokenRefreshSuccess" xml:space="preserve">
     <value>Token was successfully refreshed. Token: {0}</value>
   </data>
+  <data name="TokenRemoveFailException" xml:space="preserve">
+    <value>Fail to remove push token on the server.</value>
+  </data>
   <data name="TrackingException" xml:space="preserve">
     <value>Fail to track notification.</value>
   </data>

sdk/Notifo.SDK/Resources/Strings.resx

@@ -23,5 +23,7 @@ internal interface ISettings
         Task TrackNotificationsAsync(IEnumerable<Guid> ids);
 
         SlidingSet<Guid> GetSeenNotifications();
+
+        void Clear();
     }
 }

sdk/Notifo.SDK/Services/ISettings.cs

@@ -76,5 +76,7 @@ public async Task TrackNotificationsAsync(IEnumerable<Guid> ids)
                 Semaphore.Release();
             }
         }
+
+        public void Clear() => Preferences.Clear(SharedName);
     }
 }