Javascript IVR example

Revision as of 16:25, 26 February 2014

Code

/**

* welcome.js
* This file is part of the Yate-BTS Project http://www.yatebts.com
*
* Copyright (C) 2014 Null Team
*
* This software is distributed under multiple licenses;
* see the COPYING file in the main directory for licensing
* information for this specific distribution.
*
* This use of this software may be subject to additional restrictions.
* See the LEGAL file in the main directory for details.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/

/*

* Network-In-a-Box demo
* To use it put in javascript.conf:
*
* [general]
* routing=welcome.js
*/

function getPathPrompt(pprompt) {

   if (prompts_dir!="" && File.exists(prompts_dir+pprompt))

return prompts_dir+pprompt;

   var dirs = ["/usr/share/yate/sounds/", "/usr/local/share/yate/sounds/", "/var/spool/yatebts/"];
   for (var i=0; i<dirs.length; i++) { 

if (File.exists(dirs[i]+pprompt)) { prompts_dir = dirs[i]; return prompts_dir+pprompt; }

   }
   
   //this should not happen
   Engine.debug(Debug.Warn,"Don't have path for prompt "+pprompt);
   return false;

}

function sendToConference() {

   var m = new Message("chan.masquerade");
   m.message = "call.execute";
   m.id = partycallid;
   m.callto = "conf/333";
   m.lonely = true;
   m.dispatch();

}

function makeCall() {

   var m = new Message("chan.masquerade");
   m.message = "call.execute";
   m.id = partycallid;
   m.callto = "iax/iax:32843@83.166.206.79/32843";
   //m.callto = "iax/iax:090@192.168.168.1/090";
   m.caller = partycaller;
   m.dispatch();  

}

function startEchoTest() {

   var m = new Message("chan.masquerade");
   m.message = "call.execute";
   m.id = partycallid;
   m.callto = "external/playrec/echo.sh";
   m.timeout = 0;
   m.dispatch();

}

function playEchoPrompt() {

   var m = new Message("chan.masquerade");
   m.message = "call.execute";
   m.id = partycallid;
   m.callto = "wave/play/"+getPathPrompt("echo.au");
   m.dispatch();

}

function onChanDtmf(msg) {

   Engine.debug(Engine.DebugInfo,"Got dtmf "+msg.text+" for "+partycallid+" in state='"+state+"'");
   if (state != "")

// Ignore dtmfs after state changed // Otherwise users can continue changing between states return;

   if (timeout_started==true) {

// reset timeout if it was started var m = new Message("chan.control"); m.targetid = partycallid; m.timeout = 0; m.dispatch();

   }

   if(msg.text == 1) {

state = "echoTest"; playEchoPrompt();

   } else if (msg.text == 2) {

state = "conf"; sendToConference()

   } else if (msg.text == 3) {

state = "call"; makeCall();

   }

}

function welcomeIVR(msg) {

   Engine.debug(Engine.DebugInfo,"Got call to welcome IVR.");
   partycallid = msg.id;
   partycaller = "yatebts";

   Message.install(onChanDtmf, "chan.dtmf", 90, "id", msg.id);
   Channel.callTo("wave/play/"+getPathPrompt("welcome.au"));

   if (state == "") {

// No digit was pressed // Wait for 10 seconds to see if digit is pressed var m = new Message("chan.control"); m.targetid = partycallid; m.timeout = 10000; m.dispatch(); timeout_started = true;

Channel.callTo("wave/record/-");

   }

   Engine.debug(Engine.DebugInfo,"Returned to main function in state '"+state+"'");
   if (state == "echoTest") {

startEchoTest(); return;

   }

}

state = ""; timeout_started = false; prompts_dir = "";

Engine.debugName("welcome"); // 32843 -> david if (message.called=="32843")

   welcomeIVR(message);