public class UserRepository : IUserRepository
{
    readonly TinRollContext context;
    public UserRepository(TinRollContext context)
    {
        this.context = context;
    }
    public async Task<User> CreateUserAsync(User user)
    {
        await context.Users.AddAsync(user);
        await context.SaveChangesAsync();
        return user;
    }

    public async Task<User> GetUserAsync(int id)
    {
        return await context.Users.FirstOrDefaultAsync(u => u.Id == id);
    }

    public async Task<IEnumerable<User>> GetUsersAsync()
    {
        return await context.Users.ToListAsync();
    }
}