exotel-client/index.js

Exotel SDK for Calls & SMS

var http = require('https');
var querystring =require("querystring");
var sid;
var token;

var basePath = "/v1/Accounts/~exotel_sid~/";

module.exports = {
  init: function(exotel_sid, exotel_token) {
    sid = exotel_sid;
    token = exotel_token;
  },

  call_number: function(from, exophone, to, callback) {
  	var path = "Calls/connect";
  	var params = {
  		'From' : from,
  		'To' : to,
  		'CallerId' : exophone,
  		'CallType' : 'trans'
  	}
  	makeRequest('POST', path, params, callback);
  },

  call_flow: function(from, exophone, flowId, callback) {
  	var path = "Calls/connect";
  	var url = "http://my.exotel.in/exoml/start/~appid~";
  	url = url.replace('~appid~', flowId);
  	var params = {
  		'From' : from,
  		'Url' : url,
  		'CallerId' : exophone,
  		'CallType' : 'trans'
  	}
  	makeRequest('POST', path, params, callback);
  },

  send_sms: function(from, to, body, callback) {
  	var path = "Sms/send";
  	var params = {
  		'From' : from,
  		'To' : to,
  		'Body' : body
  	}
  	makeRequest('POST', path, params, callback);
  },

  call_status: function(callSid, callback) {
  	var path = "Calls/"+callSid;
  	var params = {};
  	makeRequest('GET', path, params, callback);
  },

  sms_status: function(SmsId, callback) {
  	var path = "SMS/Messages/"+SmsId;
  	var params = {};
  	makeRequest('GET', path, params, callback);
  }
};

function makeRequest(type, path, params, callback) {
	
	auth = "Basic " + new Buffer(sid + ":" + token).toString("base64");
	fullPath = basePath+path+'.json';
	fullPath = fullPath.replace('~exotel_sid~', sid);

	var postData = querystring.stringify(params);

	var options = {
	  hostname: 'twilix.exotel.in',
	  path: fullPath,
	  method: type,
	  headers: {
	    'Authorization':auth,
	    'Content-Type': 'application/x-www-form-urlencoded',
	    'Content-Length': postData.length
	  }
	};

	var req = http.request(options, function(res) {
	  res.setEncoding('utf8');
	  res.on('data', function (chunk) {
	    if(typeof callback === 'function') {
	    	callback(null, chunk);
	    }
	  });
	});

	req.on('error', function(e) {
	  callback(e.message, null);
	});

	req.write(postData);
	req.end();
}