public IHttpActionResult PutAnswer(int id, Answer answer)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != answer.Id)
            {
                return BadRequest();
            }

            db.Entry(answer).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!AnswerExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.NoContent);
        }
        public IHttpActionResult PostAnswer(Answer answer)
        {
            string idOfUserAnswering = (from r in db.Users where r.UserName == answer.UserId select r.Id).FirstOrDefault();
            answer.CreatedDate = DateTime.Now;
            answer.ModifiedBy = "Foo";
            answer.ModifiedDate = DateTime.Now;
            answer.CreatedBy = "Foo";
            answer.UserId = idOfUserAnswering;
            Answer a= db.Answers.Add(answer);

            //Adding Points to User
            //UserPoint pointToUser = new UserPoint();
            //pointToUser.CreatedBy = "Foo";
            //pointToUser.ModifiedBy = "Foo";
            //pointToUser.CreatedDate = DateTime.Now;
            //pointToUser.ModifiedDate = DateTime.Now;

            //var userInPointTable = (from r in db.UserPoints where r.UserId == idOfUserAnswering select r).FirstOrDefault();
            //if (userInPointTable == null)
            //{
            //    pointToUser.UserId = idOfUserAnswering;
            //    pointToUser.Points = 5;
            //    db.UserPoints.Add(pointToUser);
            //}
            //else
            //{
            //    userInPointTable.Points = userInPointTable.Points + 5;
            //    db.Entry(userInPointTable).State = EntityState.Modified;
            //}
            //Saving to database
            db.SaveChanges();

            // creating answer view model from answer

            //AnswerViewModel ansvm = new AnswerViewModel();

            //ansvm.AnswerDetailPlainText = a.AnswerDetailPlainText;
            //ansvm.AnswerDetailRichText = a.AnswerDetailRichText;
            //ansvm.CreatedDate = a.CreatedDate;
            //ansvm.Id = a.Id;
            //ansvm.QuestionId = a.QuestionId;
            //ansvm.Score = 10;
            //ansvm.UserId = a.UserId;
            //ansvm.UserName = a.User.FullName;

            //send SMS update an answer is posted
            string questionAskedBy = (from r in db.Questions where r.Id == answer.QuestionId select r.UserId).FirstOrDefault();
            string questionTitle = (from r in db.Questions where r.Id == answer.QuestionId select r.QuestionTitle).FirstOrDefault();
            string phoneNumber = (from r in db.Users where r.Id == questionAskedBy select r.PhoneNumber).FirstOrDefault();
            if(phoneNumber != null)
            {
                string url = "http://qa97app.azurewebsites.net/client/#/questiondetails/" + answer.QuestionId;
                XmlDocument xDoc =  ShortenURL(url);
                if (xDoc.GetElementsByTagName("status_code")[0].InnerText == "200")
                    url = xDoc.GetElementsByTagName("url")[0].InnerText;
                string msg;
                if (answer.AnswerDetailPlainText.Length < 100)
                    msg = "New answer on Q#" + answer.QuestionId + ". Answer : " + answer.AnswerDetailPlainText + ".For more details visit " + url;
                else
                    msg = "New answer on Q#" + answer.QuestionId + ".For more details visit " + url;

                SMSController sms = new SMSController();
                string SMSresponse = sms.SendSMS(phoneNumber, msg);
            }

            return CreatedAtRoute("DefaultApi", new { id = answer.Id }, answer);
        }