public async Task PostUser()

in MonolithicApplication/src/Controllers/UserController.cs [58:86]

• 22 lines of code
• 5 McCabe index (conditional complexity)

        public async Task<IHttpActionResult> PostUser([FromBody] user user)
        {
            var search = from u in this.unishopEntitiesContext.users
                                where u.email == user.email
                         select u;

            if (user.email.IsNullOrWhiteSpace() || !user.email.Contains('@') || !user.email.Contains('.') || search.Count() != 0)
            {
                return this.BadRequest();
            }

            byte[] salt;
            new RNGCryptoServiceProvider().GetBytes(salt = new byte[16]);
            var pbkdf2 = new Rfc2898DeriveBytes(user.password, salt, 10000);

            byte[] hash = pbkdf2.GetBytes(20);
            byte[] hashBytes = new byte[36];

            Array.Copy(salt, 0, hashBytes, 0, 16);
            Array.Copy(hash, 0, hashBytes, 16, 20);

            user.password = Convert.ToBase64String(hashBytes);

            user.user_id = Guid.NewGuid();
            this.unishopEntitiesContext.users.Add(user);
            await this.unishopEntitiesContext.SaveChangesAsync();

            return this.CreatedAtRoute("DefaultApi", new { id = user.user_id }, user);
        }