group ids can start with a +

Author: Trolldemorted

Signal-Windows/Controls/Message.xaml.cs

@@ -75,7 +75,7 @@ private void UpdateUI()
                     CheckImage.Visibility = Visibility.Collapsed;
                     DoubleCheckImage.Visibility = Visibility.Collapsed;
                     ResendTextBlock.Visibility = Visibility.Collapsed;
-                    if (Model.Message.ThreadId[0] != '+')
+                    if (Model.Message.ThreadId.EndsWith("="))
                     {
                         MessageAuthor.Visibility = Visibility.Visible;
                         MessageAuthor.Text = Model.Message.Author.ThreadDisplayName;

Signal-Windows/Signal/OutgoingMessages.cs

@@ -41,7 +41,7 @@ public void HandleOutgoingMessages()
                         ExpiresInSeconds = (int)outgoingSignalMessage.ExpiresAt
                     };
 
-                    if (outgoingSignalMessage.ThreadId[0] == '+')
+                    if (!outgoingSignalMessage.ThreadId.EndsWith("="))
                     {
                         if (!token.IsCancellationRequested)
                         {

Signal-Windows/Storage/DB.cs

@@ -757,7 +757,7 @@ public static void SaveMessageLocked(SignalMessage message)
                     {
                         timestamp = message.ComposedTimestamp;
                     }
-                    if (message.ThreadId.StartsWith("+"))
+                    if (!message.ThreadId.EndsWith("="))
                     {
                         var contact = ctx.Contacts
                             .Where(c => c.ThreadId == message.ThreadId)
@@ -909,7 +909,7 @@ public static void UpdateExpiresInLocked(SignalConversation thread, uint exp)
             {
                 using (var ctx = new SignalDBContext())
                 {
-                    if (thread.ThreadId.StartsWith("+"))
+                    if (!thread.ThreadId.EndsWith("="))
                     {
                         var contact = ctx.Contacts
                             .Where(c => c.ThreadId == thread.ThreadId)