Handling Teams lack of support for Video and Audio cards

src/libraries/Core/Microsoft.Agents.Core/Models/Channels.cs

@@ -3,6 +3,10 @@
 
 namespace Microsoft.Agents.Core.Models
 {
+    /// <summary>
+    /// Channel definitions.
+    /// The various "support" methods come from:  https://learn.microsoft.com/en-us/azure/bot-service/bot-service-channels-reference?view=azure-bot-service-4.0
+    /// </summary>
     public static class Channels
     {
         /// <summary>
@@ -215,6 +219,34 @@ public static bool SupportsCardActions(string channelId, int buttonCnt = 100)
             }
         }
 
+        public static bool SupportsVideoCard(string channelId)
+        {
+            switch (channelId)
+            {
+                case Alexa:
+                case Msteams:
+                case Twilio:
+                    return false;
+
+                default:
+                    return true;
+            }
+        }
+
+        public static bool SupportsAudioCard(string channelId)
+        {
+            switch (channelId)
+            {
+                case Alexa:
+                case Msteams:
+                case Twilio:
+                    return false;
+
+                default:
+                    return true;
+            }
+        }
+
         /// <summary>
         /// Determine if a Channel has a Message Feed.
         /// </summary>

src/samples/HandlingCards/Cards.cs

@@ -54,6 +54,18 @@ public static async Task<bool> OnCardCommandsAsync(ITurnContext turnContext, ITu
                 return true;
             }
 
+            if (cardCommand.Name.Equals("audio") && !Channels.SupportsAudioCard(turnContext.Activity.ChannelId))
+            {
+                await turnContext.SendActivityAsync($"The channel '{turnContext.Activity.ChannelId}' does not support audio cards.", cancellationToken: cancellationToken);
+                return true;
+            }
+
+            if (cardCommand.Name.Equals("video") && !Channels.SupportsAudioCard(turnContext.Activity.ChannelId))
+            {
+                await turnContext.SendActivityAsync($"The channel '{turnContext.Activity.ChannelId}' does not support video cards.", cancellationToken: cancellationToken);
+                return true;
+            }
+
             await cardCommand.CardHandler(turnContext, turnState, cancellationToken);
             return true;
         }
@@ -210,6 +222,7 @@ public static VideoCard GetVideoCard()
                        " part of the Blender Foundation. Like the foundation's previous film Elephants Dream," +
                        " the film was made using Blender, a free software application for animation made by the same foundation." +
                        " It was released as an open-source film under Creative Commons License Attribution 3.0.",
+                Aspect = "4:3",
                 Image = new ThumbnailUrl
                 {
                     Url = "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Big_buck_bunny_poster_big.jpg/220px-Big_buck_bunny_poster_big.jpg",

src/samples/HandlingCards/CardsAgent.cs

@@ -87,7 +87,7 @@ private async Task OnWelcomeMessageAsync(ITurnContext turnContext, ITurnState tu
             {
                 if (member.Id != turnContext.Activity.Recipient.Id)
                 {
-                    await turnContext.SendActivityAsync("Hello and welcome! With this sample you can see the functionality cards in an Agent.", cancellationToken: cancellationToken);
+                    await turnContext.SendActivityAsync("Hello and welcome! With this sample you can see the functionality of cards in an Agent.", cancellationToken: cancellationToken);
                     await Cards.SendCardCommandsAsync(turnContext, turnState, cancellationToken);
                 }
             }
@@ -103,7 +103,7 @@ private async Task OnMessageHandlerAsync(ITurnContext turnContext, ITurnState tu
         }
 
         /// <summary>
-        /// Handles Adaptive Card dynamic search events.
+        /// Handles Adaptive Card dynamic search events.  This is only supported on Teams channels.
         /// </summary>
         private async Task<IList<AdaptiveCardsSearchResult>> SearchHandlerAsync(ITurnContext turnContext, ITurnState turnState, Query<AdaptiveCardsSearchParams> query, CancellationToken cancellationToken)
         {