public async Task <IActionResult> PutPostsDb(int?id, Post postsDb)
        {
            if (id != postsDb.Id)
            {
                return(BadRequest());
            }

            _context.Entry(postsDb).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!PostsDbExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <User> Register(User user, string password)
        {
            byte[] passwordHash, passwordSalt;
            CreatePasswordHash(password, out passwordHash, out passwordSalt);

            user.PasswordHash = passwordHash;
            user.PasswordSalt = passwordSalt;

            await _context.Users.AddAsync(user);

            await _context.SaveChangesAsync();

            return(user);
        }