Backend login and register

src/Infrastructure/Repositories/UserRepository.cs

@@ -0,0 +1,34 @@
+using Domain.Entities;
+using Domain.Interface;
+using Infrastructure.Context;
+using Microsoft.EntityFrameworkCore;
+
+namespace Infrastructure.Repositories;
+
+public class UserRepository(ApplicationDbContext applicationDbContext)
+    : GenericRepository<User>(applicationDbContext), IUserRepository
+{
+    public async Task<User?> GetUserByEmailAsync(string email)
+    {
+        return await DbSet.FirstOrDefaultAsync(u => u.Email == email);
+    }
+
+    public async Task<User?> GetUserByUsernameAsync(string username)
+    {
+        return await DbSet.FirstOrDefaultAsync(u => u.Username == username);
+    }
+
+    public async Task<List<string>> GetUserRolesByEmailAsync(string email)
+    {
+        return await DbSet
+            .Where(ur => ur.Email == email)
+            .SelectMany(ur => ur.UserRoles)
+            .Select(ur => ur.Role!.Name)
+            .ToListAsync();
+    }
+
+    public async Task<User?> GetUserByIdAsync(int id)
+    {
+        return await DbSet.FindAsync(id);
+    }
+}