fix: Fix issue with receiving sharing state

In some circumstances, the sharing state can be retrieved prior to participants or meeting info being populated. In those cases, Essentials is now creating an empty meeting object if one doesn't exist, and populating host info with None if no host has been indicated yet.

essentials-framework/Essentials Devices Common/Essentials Devices Common/VideoCodec/ZoomRoom/ZoomRoom.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using Crestron.SimplSharp;
@@ -464,18 +465,7 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec.ZoomRoom
 
 		private void SetUpCallFeedbackActions()
 		{
-			Status.Call.Sharing.PropertyChanged += (o, a) =>
+		    Status.Call.Sharing.PropertyChanged += HandleSharingStateUpdate;
-			{
-				if (a.PropertyName == "State")
-				{
-					SharingContentIsOnFeedback.FireUpdate();
-					ReceivingContent.FireUpdate();
-
-                    // Update the share status of the meeting info
-                    var meetingInfo = new MeetingInfo(MeetingInfo.Id, MeetingInfo.Name, Participants.Host.Name, MeetingInfo.Password, GetSharingStatus(), GetIsHostMyself(), MeetingInfo.IsSharingMeeting);
-                    MeetingInfo = meetingInfo;
-				}
-			};
 
 			Status.Call.PropertyChanged += (o, a) =>
 			{
@@ -487,6 +477,39 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec.ZoomRoom
 			};
 		}
 
+	    private void HandleSharingStateUpdate(object sender, PropertyChangedEventArgs a)
+	    {
+            if (a.PropertyName != "State")
+            {
+                return;
+            }
+
+            SharingContentIsOnFeedback.FireUpdate();
+            ReceivingContent.FireUpdate();
+            try
+            {
+
+                // Update the share status of the meeting info
+                if (MeetingInfo == null)
+                {
+                    var sharingStatus = GetSharingStatus();
+
+                    MeetingInfo = new MeetingInfo("", "", "", "", sharingStatus, GetIsHostMyself(), true);
+                    return;
+                }
+
+                var meetingInfo = new MeetingInfo(MeetingInfo.Id, MeetingInfo.Name, Participants.Host != null ? Participants.Host.Name : "None",
+                    MeetingInfo.Password, GetSharingStatus(), GetIsHostMyself(), MeetingInfo.IsSharingMeeting);
+                MeetingInfo = meetingInfo;
+            }
+            catch (Exception e)
+            {
+                Debug.Console(1, this, "Error processing state property update. {0}", e.Message);
+                Debug.Console(2, this, e.StackTrace);
+                MeetingInfo = new MeetingInfo("", "", "", "", "None", false, false);
+            }
+	    }
+
 		/// <summary>
 		/// Subscribes to the PropertyChanged events on the state objects and fires the corresponding feedbacks.
 		/// </summary>
@@ -1614,7 +1637,14 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec.ZoomRoom
 			}
 			catch (Exception ex)
 			{
-				Debug.Console(1, this, "Error Deserializing feedback: {0}", ex);
+				Debug.Console(1, this, "Error Deserializing feedback: {0}", ex.Message);
+			    Debug.Console(2, this, "{0}", ex);
+
+			    if (ex.InnerException != null)
+			    {
+			        Debug.Console(1, this,"Error Deserializing feedback inner exception: {0}", ex.InnerException.Message);
+                    Debug.Console(2, this, "{0}", ex.InnerException.StackTrace);
+			    }
 			}
 		}
 
@@ -1822,6 +1852,8 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec.ZoomRoom
         {
             string sharingState = "None";
 
+            try
+            {
                 if (Status.Call.Sharing.State == zEvent.eSharingState.Receiving)
                 {
                     sharingState = "Receiving Content";
@@ -1841,12 +1873,21 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec.ZoomRoom
 
                 return sharingState;
             }
+            catch (Exception e)
+            {
+                Debug.Console(1, this, "Exception getting sharing status: {0}", e.Message);
+                Debug.Console(2, this, "{0}", e.StackTrace);
+                return sharingState;
+            }
+        }
 
         /// <summary>
         /// Will return true if the host is myself (this zoom room)
         /// </summary>
         /// <returns></returns>
         private bool GetIsHostMyself()
+        {
+            try
             {
                 if (Participants.CurrentParticipants.Count == 0)
                 {
@@ -1864,6 +1905,13 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec.ZoomRoom
                 Debug.Console(2, this, "Host is: '{0}' IsMyself?: {1}", host.Name, host.IsMyself);
                 return host.IsMyself;
             }
+            catch (Exception e)
+            {
+                Debug.Console(1, "Exception getting isHost: {0}", e.Message);
+                Debug.Console(2, "{0}", e.StackTrace);
+                return false;
+            }
+        }
 
 		public override void StartSharing()
 		{