Adding creation of data into data handler, marking the way for szdb handling

SzCore/SZ.cs

@@ -6,6 +6,7 @@ public static class SZ
 {
     private static ISzFileManager? _fileManager;
     private static ISzLogger? _logger;
+    private static ISzDatabaseHandler? _dbHandler;
 
     public static bool IsInitalized { get; private set; } = false;
 
@@ -33,6 +34,16 @@ public static class SZ
         }
     }
 
+    public static ISzDatabaseHandler DatabaseHandler
+    {
+        get
+        {
+            CheckInitialization();
+            if (_dbHandler is null) throw new Exception("SZ._dbHandler is null");
+            return _dbHandler;
+        }
+    }
+
     private static readonly Dictionary<Type, object> _services = [];
     private static readonly List<Type> _protectedServices = [];
 
@@ -42,12 +53,13 @@ public static class SZ
     /// <param name="fileManager">An ISzFileManager instance.</param>
     /// <param name="logger">An ISzLogger instance.</param>
     /// /// <exception cref="Exception">Throws if SZ has already been initalized</exception>
-    public static void Init(ISzFileManager fileManager, ISzLogger logger) 
+    public static void Init(ISzFileManager fileManager, ISzLogger logger, ISzDatabaseHandler databaseHandler) 
     {
         if (IsInitalized) throw new Exception("Cannot initalize SZ more than once.");
 
         _logger = logger;
         _fileManager = fileManager;
+        _dbHandler = databaseHandler;
 
         if (_logger is null)
         {
@@ -59,10 +71,16 @@ public static class SZ
             throw new Exception("SZ.Init failed: LocalFileManager was null");
         }
 
+        if (_dbHandler is null)
+        {
+            throw new Exception("SZ.Init failed: DatabaseHandler was null");
+        }
+
         IsInitalized = true;
 
         AddService(fileManager, true);
         AddService(logger, true);
+        AddService(databaseHandler, true);
 
         logger.Log(" -- SZ CORE INITALIZED -- ");
     }