Add job whitelist system (#28085)

* Add job whitelist system

* Address reviews

* Fix name

* Apply suggestions from code review

Co-authored-by: Pieter-Jan Briers <pieterjan.briers@gmail.com>

* cancinium

---------

Co-authored-by: Pieter-Jan Briers <pieterjan.briers@gmail.com>

Content.Server/Database/UserDbDataManager.cs

@@ -1,8 +1,6 @@
 using System.Threading;
 using System.Threading.Tasks;
-using Content.Server.Players.PlayTimeTracking;
 using Content.Server.Preferences.Managers;
-using Robust.Server.Player;
 using Robust.Shared.Network;
 using Robust.Shared.Player;
 using Robust.Shared.Utility;
@@ -19,11 +17,12 @@ namespace Content.Server.Database;
 /// </remarks>
 public sealed class UserDbDataManager : IPostInjectInit
 {
-    [Dependency] private readonly IServerPreferencesManager _prefs = default!;
     [Dependency] private readonly ILogManager _logManager = default!;
-    [Dependency] private readonly PlayTimeTrackingManager _playTimeTracking = default!;
 
     private readonly Dictionary<NetUserId, UserData> _users = new();
+    private readonly List<OnLoadPlayer> _onLoadPlayer = [];
+    private readonly List<OnFinishLoad> _onFinishLoad = [];
+    private readonly List<OnPlayerDisconnect> _onPlayerDisconnect = [];
 
     private ISawmill _sawmill = default!;
 
@@ -51,8 +50,10 @@ public sealed class UserDbDataManager : IPostInjectInit
         data.Cancel.Cancel();
         data.Cancel.Dispose();
 
-        _prefs.OnClientDisconnected(session);
-        _playTimeTracking.ClientDisconnected(session);
+        foreach (var onDisconnect in _onPlayerDisconnect)
+        {
+            onDisconnect(session);
+        }
     }
 
     private async Task Load(ICommonSession session, CancellationToken cancel)
@@ -62,12 +63,20 @@ public sealed class UserDbDataManager : IPostInjectInit
         // As such, this task must NOT throw a non-cancellation error!
         try
         {
-            await Task.WhenAll(
-                _prefs.LoadData(session, cancel),
-                _playTimeTracking.LoadData(session, cancel));
+            var tasks = new List<Task>();
+            foreach (var action in _onLoadPlayer)
+            {
+                tasks.Add(action(session, cancel));
+            }
+
+            await Task.WhenAll(tasks);
 
             cancel.ThrowIfCancellationRequested();
-            _prefs.FinishLoad(session);
+
+            foreach (var action in _onFinishLoad)
+            {
+                action(session);
+            }
 
             _sawmill.Verbose($"Load complete for user {session}");
         }
@@ -118,10 +127,31 @@ public sealed class UserDbDataManager : IPostInjectInit
         return _users[session.UserId].Task;
     }
 
+    public void AddOnLoadPlayer(OnLoadPlayer action)
+    {
+        _onLoadPlayer.Add(action);
+    }
+
+    public void AddOnFinishLoad(OnFinishLoad action)
+    {
+        _onFinishLoad.Add(action);
+    }
+
+    public void AddOnPlayerDisconnect(OnPlayerDisconnect action)
+    {
+        _onPlayerDisconnect.Add(action);
+    }
+
     void IPostInjectInit.PostInject()
     {
         _sawmill = _logManager.GetSawmill("userdb");
     }
 
     private sealed record UserData(CancellationTokenSource Cancel, Task Task);
+
+    public delegate Task OnLoadPlayer(ICommonSession player, CancellationToken cancel);
+
+    public delegate void OnFinishLoad(ICommonSession player);
+
+    public delegate void OnPlayerDisconnect(ICommonSession player);
 }