save on logout & logout on close

OwnChar/Data/IDataProvider.cs

@@ -7,6 +7,7 @@ public interface IDataProvider
     // General
     abstract bool IsInitialized();
     abstract void SetInitialized();
+    abstract bool SaveDatabase();
 
     // Model
     abstract T? Create<T>() where T : class, IOwnCharObject;

OwnChar/Data/Managers/DefaultDataManager.cs

@@ -49,6 +49,8 @@ public class DefaultDataManager : IDataManager
 
     public bool Logout(UserAccount? account)
     {
+        if (account != null && account.HasPermission(UserType.User))
+            DataProvider.SaveDatabase();
         return true;
     }
 

OwnChar/Data/Providers/JsonFile/JsonFileDataProvider.cs

@@ -256,4 +256,10 @@ public class JsonFileDataProvider : IDataProvider
         }
         return false;
     }
+
+    public bool SaveDatabase()
+    {
+        SaveFile();
+        return true;
+    }
 }