add fandom & fix initializeing database

OwnChar/Data/IDataProvider.cs

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

OwnChar/Data/Managers/DefaultDataManager.cs

@@ -2,12 +2,18 @@
 
 namespace OwnChar.Data.Managers;
 
-public class DefaultDataManager(IDataProvider dataProvider) : IDataManager
+public class DefaultDataManager : IDataManager
 {
     private const string defaultUsername = "admin";
     private const string defaultPassword = "admin";
 
-    public IDataProvider DataProvider { get; } = dataProvider;
+    public IDataProvider DataProvider { get; }
+
+    public DefaultDataManager(IDataProvider dataProvider)
+    {
+        DataProvider = dataProvider;
+        Initialize(false);
+    }
 
     public IEnumerable<UserProfile>? GetMembers(Group group)
     {
@@ -37,9 +43,15 @@ public class DefaultDataManager(IDataProvider dataProvider) : IDataManager
 
     public bool Initialize(bool force)
     {
+        var result = false;
+
         if (force || !DataProvider.IsInitialized())
-            return CreateUserAccount(defaultUsername, Utils.HashPassword(defaultUsername, defaultPassword)) != null;
-        return true;
+        {
+            result = CreateUserAccount(defaultUsername, Utils.HashPassword(defaultUsername, defaultPassword)) != null;
+            DataProvider.SetInitialized();
+        }
+
+        return result;
     }
 
     public UserAccount? CreateUserAccount(string username, string password)

OwnChar/Data/Providers/JsonFile/JsonFile.cs

@@ -4,6 +4,7 @@ namespace OwnChar.Data.Providers.JsonFile;
 
 public class JsonFile
 {
+    public bool IsInitialized { get; set; }
     public List<JsonUserAccount> UserAccounts { get; } = [];
     public List<JsonCharacter> Characters { get; } = [];
     public List<JsonGroup> Groups { get; } = [];

OwnChar/Data/Providers/JsonFile/JsonFileDataProvider.cs

@@ -87,7 +87,12 @@ public class JsonFileDataProvider : IDataProvider
 
     public bool IsInitialized()
     {
-        return JsonFile.UserAccounts.Count != 0;
+        return JsonFile.IsInitialized;
+    }
+
+    public void SetInitialized()
+    {
+        JsonFile.IsInitialized = true;
     }
 
     public bool Delete<T>(T obj) where T : class, IOwnCharObject