// TODO: external token/auth key - possibly
        public async Task <IActionResult> Api([Bind("ID,From,To,Body,AccountSid,ToCountry,ToState,SmsMessageSid,NumMedia,ToCity,FromZip,SmsSid,FromState,SmsStatus,FromCity,FromCountry,ToZip,NumSegments,MessageSid,ApiVersion")] IncomingMessage incomingMessage)
        {
            // default repsonse, in case no incoming POST data can be processed
            string textMessage = "Internal error. This is default fallback message.";

            // store incoming POST data bound to model object in context
            if (ModelState.IsValid)
            {
                // add incoming data as IncomingMessage record to database
                _context.Add(incomingMessage);
                await _context.SaveChangesAsync();

                // new Jumble - and internally construct MessageOut
                Jumble jumble = new Jumble(incomingMessage);
                _context.Add(jumble);
                await _context.SaveChangesAsync();

                // set response content
                textMessage = jumble.MessageOut;
            }

            // construct TwiML from to be returned message
            MessagingResponse twiml = new MessagingResponse();

            twiml.Message(textMessage);
            string twixml = twiml.ToString();

            // output TwiML xml or plain output format
            return(Content(textMessage));
        }
        public async Task <IActionResult> Create([Bind("ID,MessageIn,MessageOut,NumberTo,NumberFrom,TimeStamp")] Jumble jumble)
        {
            if (ModelState.IsValid)
            {
                _context.Add(jumble);
                await _context.SaveChangesAsync();

                return(RedirectToAction(nameof(Index)));
            }
            return(View(jumble));
        }