Ensure that ABS OAuth cards are not sent by the Bot when (#1812)

a community adapters is in use.

Co-authored-by: ckkMicrosoft <30480427+ckkMicrosoft@users.noreply.github.com>
Co-authored-by: Steven Ickman <stevenic@microsoft.com>

libraries/botbuilder-dialogs/src/prompts/oauthPrompt.ts

@@ -249,7 +249,7 @@ export class OAuthPrompt extends Dialog {
         if (!Array.isArray(msg.attachments)) { msg.attachments = []; }
 
         // Add login card as needed
-        if (this.channelSupportsOAuthCard(context.activity.channelId)) {
+        if (this.isOAuthCardSupported(context)) {
             const cards: Attachment[] = msg.attachments.filter((a: Attachment) => a.contentType === CardFactory.contentTypes.oauthCard);
             if (cards.length === 0) {
                 let cardActionType = ActionTypes.Signin;
@@ -346,6 +346,26 @@ export class OAuthPrompt extends Dialog {
         return activity.type === ActivityTypes.Invoke && activity.name === 'signin/verifyState';
     }
 
+    private isOAuthCardSupported(context: TurnContext) {
+        // Azure Bot Service OAuth cards are not supported in the community adapters. Since community adapters
+        // have a 'name' in them, we cast the adapter to 'any' to check for the name.
+        const adapter:any = context.adapter;
+        if (adapter.name) {
+            switch(adapter.name) {
+                case 'Facebook Adapter':
+                case 'Google Hangouts Adapter':
+                case 'Slack Adapter':
+                case 'Twilio SMS Adapter':
+                case 'Web Adapter':
+                case 'Webex Adapter':
+                case 'Botkit CMS':
+                    return false;
+                default:
+            }
+        }
+        return this.channelSupportsOAuthCard(context.activity.channelId);
+    }
+
     private channelSupportsOAuthCard(channelId: string): boolean {
         switch (channelId) {
             case Channels.Msteams: