بلاخره تموم شد

VizhTalk.Learning.Domain/Entities/Language.cs

@@ -6,6 +6,16 @@ namespace VizhTalk.Learning.Domain.Entities;
 
 public class Language : Entity<LanguageId>, IAggregateRoot
 {
+    public Language()
+    {
+        // only EF
+    }
+    private Language(LanguageTitle title)
+    {
+        Title = title;
+    }
     public LanguageTitle Title { get; private set; }
-    
+
+    public static Language CreateNew(LanguageTitle title)
+        => new(title);
 }

VizhTalk.Learning.Domain/Repositories/ILanguageRepository.cs

@@ -0,0 +1,11 @@
+using VizhTalk.BuildingBlocks.Domain;
+using VizhTalk.Learning.Domain.Entities;
+using VizhTalk.Learning.Domain.TypeIds;
+
+namespace VizhTalk.Learning.Domain.Repositories
+{
+    public interface ILanguageRepository : IRepositoryBase<Language,LanguageId>
+    {
+
+    }
+}

VizhTalk.Learning.Domain/TypeIds/LanguageId.cs

@@ -7,9 +7,9 @@ using VizhTalk.BuildingBlocks.Domain;
 
 namespace VizhTalk.Learning.Domain.TypeIds
 {
-    public class LanguageId : TypedIdValueBase<LanguageId>
+    public class LanguageId : TypedIdValueBase<long>
     {
-        public LanguageId(LanguageId value) : base(value)
+        public LanguageId(long value) : base(value)
         {
         }
     }

VizhTalk.Learning.Domain/ValueObjects/LanguageTitle.cs

@@ -8,6 +8,8 @@ namespace VizhTalk.Learning.Domain.ValueObjects
         public LanguageTitle(string title)
         {
             Guard.NullOrEmpty(title, nameof(LanguageTitle));
+            Guard.MaxLength(title, nameof(LanguageTitle), 60);
+
             Value = title;
         }
         public string Value { get; set; }