IUserGroupsService + tests

Govor.Application/Interfaces/IUserGroupsService.cs

@@ -0,0 +1,8 @@
+using Govor.Core.Models;
+
+namespace Govor.Application.Interfaces;
+
+public interface IUserGroupsService
+{
+    Task<List<ChatGroup>> GetUserGroupsAsync(Guid userId);
+}

Govor.Application/Services/UserGroupsService.cs

@@ -0,0 +1,28 @@
+using Govor.Application.Interfaces;
+using Govor.Core.Models;
+using Govor.Core.Repositories.Groups;
+using Govor.Data.Repositories.Exceptions;
+
+namespace Govor.Application.Services;
+
+public class UserGroupsService : IUserGroupsService
+{
+    private readonly IGroupsRepository _groupRep;
+    
+    public UserGroupsService(IGroupsRepository groupsRepository)
+    {
+        _groupRep = groupsRepository;
+    }
+    
+    public async Task<List<ChatGroup>> GetUserGroupsAsync(Guid userId)
+    {
+        try
+        {
+            return await _groupRep.GetByUserIdAsync(userId);
+        }
+        catch (NotFoundByKeyException<Guid> ex)
+        {
+            return new List<ChatGroup>();
+        }
+    }
+}