change: show a message when .prune fails due to already running error

src/NadekoBot/Modules/Administration/Prune/PruneCommands.cs

@@ -65,23 +65,6 @@ public partial class Administration
             await progressMsg.DeleteAsync();
         }
 
-        private async Task SendResult(PruneResult result)
-        {
-            switch (result)
-            {
-                case PruneResult.Success:
-                    break;
-                case PruneResult.AlreadyRunning:
-                    break;
-                case PruneResult.FeatureLimit:
-                    await Response().Pending(strs.feature_limit_reached_owner).SendAsync();
-                    break;
-
-                default:
-                    throw new ArgumentOutOfRangeException(nameof(result), result, null);
-            }
-        }
-
         // prune x
         [Cmd]
         [RequireContext(ContextType.Guild)]
@@ -218,5 +201,27 @@ public partial class Administration
 
             await Response().Confirm(strs.prune_cancelled).SendAsync();
         }
+
+
+        private async Task SendResult(PruneResult result)
+        {
+            switch (result)
+            {
+                case PruneResult.Success:
+                    break;
+                case PruneResult.AlreadyRunning:
+                    var msg = await Response().Pending(strs.prune_already_running).SendAsync();
+                    msg.DeleteAfter(5);
+                    break;
+                case PruneResult.FeatureLimit:
+                    var msg2 = await Response().Pending(strs.feature_limit_reached_owner).SendAsync();
+                    msg2.DeleteAfter(10);
+                    break;
+                default:
+                    Log.Error("Unhandled result received in prune: {Result}", result);
+                    await Response().Error(strs.error_occured).SendAsync();
+                    break;
+            }
+        }
     }
 }

src/NadekoBot/data/strings/responses/responses.en-US.json

@@ -38,6 +38,7 @@
   "prune_cancelled": "Pruning was cancelled.",
   "prune_not_found": "No active prune was found on this server.",
   "prune_progress": "Pruning... {0}/{1} messages deleted.",
+  "prune_already_running": "A prune is already running on this server.",
   "timeoutdm": "You have been timed out in {0} server.\nReason: {1}",
   "timedout_user": "User Timed Out",
   "remove_roles_pl": "have had their roles removed",