Alert the user if nobody's around to hear a bwoink (#5147)

Content.Server/Administration/BwoinkSystem.cs

@@ -10,6 +10,7 @@ using Robust.Shared.GameObjects.Components;
 using Robust.Shared.Map;
 using Robust.Shared.Players;
 using Robust.Shared.Network;
+using Robust.Shared.Localization;
 using Robust.Server.Player;
 using Robust.Shared.IoC;
 
@@ -28,7 +29,10 @@ namespace Content.Server.Administration
 
             // TODO: Sanitize text?
             // Confirm that this person is actually allowed to send a message here.
-            if ((senderSession.UserId != message.ChannelId) && (_adminManager.GetAdminData(senderSession) == null))
+            var senderPersonalChannel = senderSession.UserId == message.ChannelId;
+            var senderAdmin = _adminManager.GetAdminData(senderSession) != null;
+            var authorized = senderPersonalChannel || senderAdmin;
+            if (!authorized)
             {
                 // Unauthorized bwoink (log?)
                 return;
@@ -38,16 +42,25 @@ namespace Content.Server.Administration
 
             LogBwoink(msg);
 
-            var targets = _adminManager.ActiveAdmins.Select(p => p.ConnectedClient);
-
             // Admins
-            foreach (var channel in targets)
-                RaiseNetworkEvent(msg, channel);
+            var targets = _adminManager.ActiveAdmins.Select(p => p.ConnectedClient).ToList();
 
             // And involved player
             if (_playerManager.TryGetSessionById(message.ChannelId, out var session))
                 if (!targets.Contains(session.ConnectedClient))
-                    RaiseNetworkEvent(msg, session.ConnectedClient);
+                    targets.Add(session.ConnectedClient);
+
+            foreach (var channel in targets)
+                RaiseNetworkEvent(msg, channel);
+
+            if (targets.Count == 1)
+            {
+                var systemText = senderPersonalChannel ?
+                    Loc.GetString("bwoink-system-starmute-message-no-other-users-primary") :
+                    Loc.GetString("bwoink-system-starmute-message-no-other-users-secondary");
+                var starMuteMsg = new BwoinkTextMessage(message.ChannelId, SystemUserId, systemText);
+                RaiseNetworkEvent(starMuteMsg, senderSession.ConnectedClient);
+            }
         }
     }
 }

Content.Shared/Administration/SharedBwoinkSystem.cs

@@ -13,6 +13,9 @@ namespace Content.Shared.Administration
 {
     public abstract class SharedBwoinkSystem : EntitySystem
     {
+        // System users
+        public static NetUserId SystemUserId { get; } = new NetUserId(Guid.Empty);
+
         public override void Initialize()
         {
             base.Initialize();

Resources/Locale/en-US/administration/bwoink.ftl

@@ -0,0 +1,4 @@
+bwoink-system-starmute-message-no-other-users-primary = *System: Nobody is available to receive your message. Try pinging Game Admins on Discord.
+
+bwoink-system-starmute-message-no-other-users-secondary = *System: Nobody is available to receive your message.
+