uff, lot of work

OwnChar.Server/Extensions/GeneralExtensions.cs

@@ -0,0 +1,39 @@
+using OwnChar.Api.Packets;
+using OwnChar.Data;
+using OwnChar.Data.Model.Base;
+using OwnChar.Server.Api;
+using OwnChar.Server.Data.Model;
+using System.Diagnostics.CodeAnalysis;
+
+namespace OwnChar.Server.Extensions;
+
+public static class GeneralExtensions
+{
+    public static bool CheckLogin(this IServer server, OwnCharRequest request, UserType userType)
+    {
+        if (server.Data is null
+            || string.IsNullOrWhiteSpace(request.Username)
+            || string.IsNullOrWhiteSpace(request.AuthSecret)
+            || !server.IsLoggedIn(request.AuthSecret)
+            || server.GetUser(request.AuthSecret) is not UserAccountBase usr
+            || usr.Type < userType)
+            return false;
+        return true;
+    }
+
+    public static bool CheckLogin(this IServer server, OwnCharRequest request, UserType userType, [NotNullWhen(true)] out UserAccountDb? user)
+    {
+        if (server.Data is null
+            || string.IsNullOrWhiteSpace(request.Username)
+            || string.IsNullOrWhiteSpace(request.AuthSecret)
+            || !server.IsLoggedIn(request.AuthSecret)
+            || server.GetUser(request.AuthSecret) is not UserAccountDb usr
+            || usr.Type < userType)
+        {
+            user = null;
+            return false;
+        }
+        user = usr;
+        return true;
+    }
+}