Initial commit: HelpDesk ICHN - .NET 10 backend + Next.js 16 frontend

backend/HelpDesk.Data/Repositories/UserRepository.cs

@@ -0,0 +1,55 @@
+using HelpDesk.Models.Entities;
+using HelpDesk.Models.Enums;
+using Microsoft.EntityFrameworkCore;
+
+namespace HelpDesk.Data.Repositories;
+
+public class UserRepository : IUserRepository
+{
+    private readonly HelpDeskDbContext _context;
+
+    public UserRepository(HelpDeskDbContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<User?> GetByIdAsync(Guid id)
+        => await _context.Users.FirstOrDefaultAsync(u => u.Id == id);
+
+    public async Task<User?> GetByEmailAsync(string email)
+        => await _context.Users.FirstOrDefaultAsync(u => u.Email == email);
+
+    public async Task<IEnumerable<User>> GetAllAsync()
+        => await _context.Users.OrderBy(u => u.LastName).ToListAsync();
+
+    public async Task<IEnumerable<User>> GetByRoleAsync(UserRole role)
+        => await _context.Users.Where(u => u.Role == role && u.IsActive).OrderBy(u => u.LastName).ToListAsync();
+
+    public async Task<User> CreateAsync(User user)
+    {
+        _context.Users.Add(user);
+        await _context.SaveChangesAsync();
+        return user;
+    }
+
+    public async Task<User?> UpdateAsync(User user)
+    {
+        var existing = await _context.Users.FindAsync(user.Id);
+        if (existing == null) return null;
+
+        existing.FirstName = user.FirstName;
+        existing.LastName = user.LastName;
+        existing.Email = user.Email;
+        existing.PhoneNumber = user.PhoneNumber;
+        existing.AvatarUrl = user.AvatarUrl;
+        existing.Role = user.Role;
+        existing.IsActive = user.IsActive;
+        existing.UpdatedAt = DateTime.UtcNow;
+
+        await _context.SaveChangesAsync();
+        return existing;
+    }
+
+    public async Task<bool> ExistsAsync(string email)
+        => await _context.Users.AnyAsync(u => u.Email == email);
+}