<?php
	
	require "Services/Twilio.php";
    include "extensions_map.php";

    $receptionist_phone_number = getPhoneNumberByExtension("0");

    $first = true;
 
    //check if we've received an extension to try
	if (isset($_REQUEST['Digits'])) {
    	$digits = $_REQUEST['Digits'];
    	if($digits == '*'){
    		header("Location: lookup.php");
    		exit();
    	}
	} else {
		$digits='';
	}
    if(strlen($digits)){
            $first = false; 
            //look up the phone number for the extension they entered
            $phone_number = getPhoneNumberByExtension($digits);

            //if we found a phone number for the extension they entered
			if($phone_number!=null){

				//output TwiML to dial the extension and bridge the call
				$r = new Services_Twilio_Twiml();
				$r->say("Thank you, dialing now");
				$r->dial($phone_number);
				header ("Content-Type:text/xml");
				print $r;
				exit();
			}

        }

    //If this is the first time we visit this page,
    //or the extension lookup failed, play the intro message

	$r = new Services_Twilio_Twiml();
	$g = $r->gather();

	//if this is the first time this menu was hit, play a greeting
	//otherwise explain that the extension was not found

	if($first)
		$g->say("Thank you for calling Example Incorporated.");
	else
		$g->say('I\'m sorry, we could not find the extension ' . $_REQUEST['Digits']);
	$g->say(" If you know your party's extension, please enter the extension now, followed by the pound sign. To search the directory, press star. Otherwise, stay on the line for the receptionist.");
	$r->say("Connecting you to the operator, please stay on the line.");
	$r->dial($receptionist_phone_number);
	
	header ("Content-Type:text/xml");
	print $r;
	
?>