showrules autocompletion (#1061)

Content.Server/Info/ShowRulesCommand.cs

@@ -12,6 +12,7 @@ namespace Content.Server.Info;
 [AdminCommand(AdminFlags.Admin)]
 public sealed class ShowRulesCommand : IConsoleCommand
 {
+    [Dependency] private readonly IPlayerManager _playerManager = default!;
     public string Command => "showrules";
     public string Description => "Opens the rules popup for the specified player.";
     public string Help => "showrules <username> [seconds]";
@@ -63,4 +64,28 @@ public async void Execute(IConsoleShell shell, string argStr, string[] args)
         var player = IoCManager.Resolve<IPlayerManager>().GetSessionByUserId(located.UserId);
         netManager.ServerSendMessage(message, player.ConnectedClient);
     }
+
+    public CompletionResult GetCompletion(IConsoleShell shell, string[] args)
+    {
+        if (args.Length == 1)
+        {
+            return CompletionResult.FromHintOptions(
+                CompletionHelper.SessionNames(players: _playerManager),
+                Loc.GetString("<username>"));
+        }
+
+        if (args.Length == 2)
+        {
+            var durations = new CompletionOption[]
+            {
+                new("300", Loc.GetString("5 minutes")),
+                new("600", Loc.GetString("10 minutes")),
+                new("1200", Loc.GetString("20 minutes")),
+            };
+
+            return CompletionResult.FromHintOptions(durations, Loc.GetString("[seconds]"));
+        }
+
+        return CompletionResult.Empty;
+    }
 }