Add cvar to deadmin when joining round (#18430)

Content.Server/GameTicking/GameTicker.Spawning.cs

@@ -1,11 +1,13 @@
 using System.Globalization;
 using System.Linq;
 using System.Numerics;
+using Content.Server.Administration.Managers;
 using Content.Server.Ghost;
 using Content.Server.Players;
 using Content.Server.Spawners.Components;
 using Content.Server.Speech.Components;
 using Content.Server.Station.Components;
+using Content.Shared.CCVar;
 using Content.Shared.Database;
 using Content.Shared.GameTicking;
 using Content.Shared.Preferences;
@@ -22,6 +24,8 @@ namespace Content.Server.GameTicking
 {
     public sealed partial class GameTicker
     {
+        [Dependency] private readonly IAdminManager _adminManager = default!;
+
         private const string ObserverPrototypeName = "MobObserver";
 
         /// <summary>
@@ -133,6 +137,10 @@ namespace Content.Server.GameTicking
                 return;
             }
 
+            // Automatically de-admin players who are joining.
+            if (_cfg.GetCVar(CCVars.AdminDeadminOnJoin) && _adminManager.IsAdmin(player))
+                _adminManager.DeAdmin(player);
+
             // We raise this event to allow other systems to handle spawning this player themselves. (e.g. late-join wizard, etc)
             var bev = new PlayerBeforeSpawnEvent(player, character, jobId, lateJoin, station);
             RaiseLocalEvent(bev);