app.js

var request = require('request');
var restify = require('restify');
var chalk = require('chalk');
var _ = require('lodash');

var server = restify.createServer({
  name: 'adoptDenver',
  version: '0.0.1'
});

var regex = {
  'one': new RegExp(/ID=([^&]+)/gi), // id
  'two': new RegExp(/<font\ class="Title">*([^&]+)/gi), // name 
};

var name, desc, _id;

var _id = undefined;
var idParams = [];

var endpoint = 'http://www.petharbor.com/petoftheday.asp?shelterlist=%27DNVR%27&imgwid=160&imght=120&imgname=POD&bgcolor=FFFFFF&fgcolor=000000&type=dog&border=0&availableonly=1&SEQ=0&SHOWSTAT=1&fontface=arial&fontsize=2&noclientinfo=0&bigtitle=1&source=results';

server.use(restify.acceptParser(server.acceptable));
server.use(restify.queryParser());
server.use(restify.bodyParser());
server.use(restify.fullResponse());

//  CORS
restify.CORS.ALLOW_HEADERS.push('accept');
restify.CORS.ALLOW_HEADERS.push('sid');
restify.CORS.ALLOW_HEADERS.push('lang');
restify.CORS.ALLOW_HEADERS.push('origin');
restify.CORS.ALLOW_HEADERS.push('withcredentials');
restify.CORS.ALLOW_HEADERS.push('x-requested-with');
server.use(restify.CORS());

server.get('/', function (req, res, next) {

  request(endpoint, function (err, req, body) {
    errorHandler(err);
    var _body = body;
    idParams = regex.one.exec(_body);
    _id = idParams[1];
    var stringRegExp = "[^" + _id + "<BR><BR><\/font>][^<BR><br>]"
    var regexpSix = new RegExp(stringRegExp, "g");

    var endpointTwo = 'http://www.petharbor.com/detail.asp?ID=' + _id + '&LOCATION=DNVR&searchtype=rnd&shelterlist=%27DNVR%27&where=dummy&kiosk=1';

    request(endpointTwo, function (err, req, body) {
      errorHandler(err);
      var _body = body;
      var nameParams = regex.two.exec(_body);

      try {
        if (_.isNull(nameParams)) {
          // return next();
          res.send(500, "error in parsing first response");
        } else {
          var name = nameParams[1];
        }

      } catch (e) {
        console.log(e);
        throw e;
      }

      var stringRegExp = _id + "<BR><BR><\/font>(.*?)<BR><br>";
      var regexpSeven = new RegExp(stringRegExp, "g");
      var responseBody = regexpSeven.exec(_body);

      try {
        if (_.isNull(responseBody)) {
          console.log(responseBody)
          res.end("error in parsing second response");
        } else {
          var desc = responseBody[1];
        }
      } catch (e) {
        console.log(e);
        throw e;
      }

      desc = desc.replace(/<BR><BR>/, " ").replace(/<BR><BR>/, " ");
      // payload for request
      var animaldata = {
        name: name,
        pic: "http://www.petharbor.com/get_image.asp?RES=detail&ID=" + _id + "&LOCATION=DNVR",
        id: _id,
        desc: desc
      };

      res.send(animaldata);
      // res.end();
    });
  });
});

var errorHandler = function (e) {
  if (e) {
    console.error(e);
    next(e);
  }
  // if (e) return next(new restify.InvalidArgumentError(JSON.stringify(e.errors)));
}

var port = process.env.PORT || 8080;
server.listen(port, function () {
  console.log('%s listening at %s', server.name, server.url);
})