Don't show play with bots button if bot has already been invited (#3860)

* Don't show play with bots button if bot has already been invited

* Check participant list for bot directly, move bot presence check

---------

Co-authored-by: ggurdin <46800240+ggurdin@users.noreply.github.com>

lib/pangea/activity_sessions/activity_session_start/activity_session_start_page.dart

@@ -7,6 +7,7 @@ import 'package:matrix/matrix.dart';
 import 'package:fluffychat/l10n/l10n.dart';
 import 'package:fluffychat/pangea/activity_sessions/activity_room_extension.dart';
 import 'package:fluffychat/pangea/activity_sessions/activity_session_start/activity_sessions_start_view.dart';
+import 'package:fluffychat/pangea/bot/utils/bot_name.dart';
 import 'package:fluffychat/pangea/extensions/pangea_room_extension.dart';
 import 'package:fluffychat/utils/matrix_sdk_extensions/matrix_locals.dart';
 import 'package:fluffychat/widgets/future_loading_dialog.dart';
@@ -50,6 +51,10 @@ class ActivitySessionStartController extends State<ActivitySessionStartPage> {
 
   Room get room => widget.room;
 
+  bool get isBotRoomMember => room.getParticipants().any(
+        (p) => p.id == BotName.byEnvironment,
+      );
+
   String get displayname => room.getLocalizedDisplayname(
         MatrixLocals(L10n.of(context)),
       );

lib/pangea/activity_sessions/activity_session_start/activity_sessions_start_view.dart

@@ -129,29 +129,30 @@ class ActivitySessionStartView extends StatelessWidget {
                               ),
                             ),
                           if (controller.room.isRoomAdmin) ...[
-                            ElevatedButton(
-                              style: ElevatedButton.styleFrom(
-                                backgroundColor:
-                                    theme.colorScheme.primaryContainer,
-                                foregroundColor:
-                                    theme.colorScheme.onPrimaryContainer,
-                                padding: const EdgeInsets.all(8.0),
-                                shape: RoundedRectangleBorder(
-                                  borderRadius: BorderRadius.circular(20.0),
+                            if (!controller.isBotRoomMember)
+                              ElevatedButton(
+                                style: ElevatedButton.styleFrom(
+                                  backgroundColor:
+                                      theme.colorScheme.primaryContainer,
+                                  foregroundColor:
+                                      theme.colorScheme.onPrimaryContainer,
+                                  padding: const EdgeInsets.all(8.0),
+                                  shape: RoundedRectangleBorder(
+                                    borderRadius: BorderRadius.circular(20.0),
+                                  ),
+                                ),
+                                onPressed: () => showFutureLoadingDialog(
+                                  context: context,
+                                  future: () => controller.room
+                                      .invite(BotName.byEnvironment),
+                                ),
+                                child: Row(
+                                  mainAxisAlignment: MainAxisAlignment.center,
+                                  children: [
+                                    Text(L10n.of(context).playWithBot),
+                                  ],
                                 ),
                               ),
-                              onPressed: () => showFutureLoadingDialog(
-                                context: context,
-                                future: () => controller.room
-                                    .invite(BotName.byEnvironment),
-                              ),
-                              child: Row(
-                                mainAxisAlignment: MainAxisAlignment.center,
-                                children: [
-                                  Text(L10n.of(context).playWithBot),
-                                ],
-                              ),
-                            ),
                             ElevatedButton(
                               style: ElevatedButton.styleFrom(
                                 backgroundColor: