merger

Demo/Data/Repository/GroupRepositoryImpl.cs

@@ -8,8 +8,33 @@ using System.Threading.Tasks;
 
 namespace Demo.Data.Repository
 {
-    public class GroupRepositoryImpl
+    public class GroupRepositoryImpl:IGroupRepository
     {
+        public bool AddGroup(GroupLocalEntity newGroup)
+        {
+            throw new NotImplementedException();
+        }
+
+        public List<GroupLocalEntity> GetAllGroup()
+        {
+            throw new NotImplementedException();
+        }
+
         public List<GroupLocalEntity> GetAllGroups() => LocalStaticData.groups;
+
+        public GroupLocalEntity GetGroupById(int groupID)
+        {
+            throw new NotImplementedException();
+        }
+
+        public bool RemoveGroupById(int groupID)
+        {
+            throw new NotImplementedException();
+        }
+
+        public bool UpdateGroupById(int groupID, GroupLocalEntity updatedGroup)
+        {
+            throw new NotImplementedException();
+        }
     }
 }

Demo/Data/Repository/IGroupRepository.cs

@@ -0,0 +1,18 @@
+using Demo.domain.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Demo.Data.Repository
+{
+    public interface IGroupRepository
+    {
+        List<GroupLocalEntity> GetAllGroup();
+        bool RemoveGroupById(int groupID);
+        bool UpdateGroupById(int groupID, GroupLocalEntity updatedGroup);
+        GroupLocalEntity GetGroupById(int groupID);
+        bool AddGroup(GroupLocalEntity newGroup);
+    }
+}

Demo/Demo.csproj

@@ -11,4 +11,8 @@
     <Folder Include="Data\RemoteData\" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
+  </ItemGroup>
+
 </Project>

Demo/Domain/UseCase/UserUseCase.cs

@@ -10,19 +10,19 @@ namespace Demo.Domain.UseCase
 {
     public class UserUseCase
     {
-        private UserRepositoryImpl _repositoryUserImpl;
+        private readonly UserRepositoryImpl _repositoryUserImpl;
-        private GroupRepositoryImpl _repositoryGroupImpl;
+        private readonly IGroupRepository _repositoryGroupImpl;
 
-        public UserUseCase(UserRepositoryImpl repositoryImpl, GroupRepositoryImpl repositoryGroupImpl)
+        public UserUseCase(UserRepositoryImpl repositoryImpl, IGroupRepository repositoryGroupImpl)
         {
             _repositoryUserImpl = repositoryImpl;
             _repositoryGroupImpl = repositoryGroupImpl;
         }
 
-      public List<Group> GetAllGroups() => _repositoryGroupImpl.GetAllGroups()
+      private List<Group> GetAllGroups() => _repositoryGroupImpl.GetAllGroup()
             .Select(it => new Group { Id  = it.Id, Name = it.Name}).ToList();
       public List<User> GetAllUsers() => _repositoryUserImpl.GetAllUsers
-            .Join(_repositoryGroupImpl.GetAllGroups(),
+            .Join(_repositoryGroupImpl.GetAllGroup(),
             user => user.GroupID,
             group => group.Id,
             (user, group) => 

Demo/Program.cs

@@ -3,6 +3,8 @@ using Demo.Data.Repository;
 using Demo.Domain.UseCase;
 using Demo.UI;
 
+
+
 GroupRepositoryImpl groupRepositoryImpl = new GroupRepositoryImpl();
 UserRepositoryImpl userRepositoryImpl = new UserRepositoryImpl();
 UserUseCase userUseCase = new UserUseCase(userRepositoryImpl, groupRepositoryImpl);