/handlers/analytics.js

analytics.js

var requiem  = require('bb-requiem')
  , _       = require('underscore')
  , cheerio = require('cheerio')

module.exports = function(app){
  return {index: getCore()}
}


function getCore() {

  return function(req, res, next) {
    var request = requiem(req,res)
      , uri

    if( req.query.bb) {
      uri = req.query.bb;
      
      request({
        uri: uri,
        proxy_cookies: true,
      }, function(err, response, body) {
        if(err){ return /* ignore */ }

          var $ = cheerio.load(body)
          , pageDotomiScript = $('script:contains(dotomi)').text().replace(/YUI.+/,"\n")
          , pageDotomi = "jQuery('body').append('<script>"+pageDotomiScript+"</script>');"
          , pageGoogleConv = $('script:contains(google_tag_params)').text()
          , pageGoogle = "jQuery('body').append('<script>"+pageGoogleConv+"</script>');"
          , yuiCstVar = $('script:contains(app.spvTracking)').text().match(/CustomVars: '.+/)
          , cnseSoid = $('script:contains(app.cnsesSoID)').text().match(/YUI_config.app.cnsesSoID.+/)
          , nanigans = $('img[src*="nanigans"]')
          , nanigansApp = "jQuery('body').append(" + nanigans + ");"
          , faceBk = $('img[src*="offsite_conversion"]')
          , faceBkApp = "jQuery('body').append(" + faceBkApp + ");"
          
          try {
            var yuiCust = yuiCstVar[0].replace(/CustomVars: /,"")
            yuiCust = yuiCust.replace(/,/,"")
            var temp = cnseSoid[0].replace(/[a-zA-Z]+.+ =/,"")
            cnSoID = temp.replace(/;/,"").trim()
    
            //wayfairs inhouse analytics 
                
    
            if(typeof req.cookies.CSN !== 'undefined'){
              var CSN = req.cookies.CSN;
              CSN = CSN.replace(/g_zip=\d+&/,"")
            } else {
              var CSN = 'CSNID=null'
            }
            var cstmVars = yuiCust
    
              if(typeof req.cookies.CSNUtId !== 'undefined'){
                var userID = req.cookies.CSNUtId;
              }
            // enforce that cstmVars and rfCstmVars end's with a semicolon
            if (cstmVars.charAt(cstmVars.length - 1) != ';') {
              cstmVars += ';';
            }

            if (/shipping/.test(uri)){
              cstmVars = cstmVars.replace(/PageType\=CheckoutLogin/,'PageType=CheckoutShippingLoggedIn');
            } else if (/billing/.test(uri)){
              cstmVars = cstmVars.replace(/PageType\=CheckoutLogin/,'PageType=CheckoutPayment');
            } else if (/revieworder/.test(uri)) {
              cstmVars = cstmVars.replace(/PageType\=CheckoutLogin/,'PageType=CheckoutReviewOrder');
            }
            
            var img = '//www.csnstores.com/asp/ajaxrequests/spv/spv2.php?rf' + CSN
            + '&rfHTTPReferer='+encodeURIComponent(req.headers.referer)
            + '&rfURL='+encodeURIComponent(req.query.bb)+'&rfGUID='+encodeURIComponent(userID)
            + '&rfSoID=' + cnSoID + '&rfCstmVars='+encodeURIComponent(cstmVars+'Mobile=1;')
            
            var imgSpl = img.split("'")
              , imgLen = imgSpl.length
    
            for(var i = 0; i < imgLen;i++){
              img = img.replace(/'/,'')
            }
    
            var spvImg = "jQuery('body').append('<img src=\""+img+"\">');"
            var analyticsScript = pageGoogle + spvImg + pageDotomi + nanigansApp + faceBkApp
    
            var anlSpl = analyticsScript.split("\n")
              , anlLen = anlSpl.length
    
            for(i = 0; i<anlLen;i++){
              analyticsScript = analyticsScript.replace(/\n/,'')
            }
    
            res.jsonp(analyticsScript)
          } catch (e) {
            console.warn('Analytics missing on this url: ' + uri);
          }
        })
    } else {
      res.jsonp('')
    }
  }
}