// pdts with google autotagging as well as general tagging capabilities.  
// changed script to reflect new Google tracking codes
// installation of this script is a 3 step process:
// 1. 	Upload this script to the website and call it from EVERY page on the website.  
//		Sample installation code:  <script src="/scripts/PDTS.js"></script>
// 2.	In Salesforce, determine the form values mapping as assigned by the system.
//		Record those mappings in the variables below: 							
var sfRefUrl = "00N50000001dC3g"
var sfRefDomain = "00N50000001dC3l"
var sfSearchTerms = "00N50000001dC3q"
var sfLandingPage = "00N50000001dC3v"
var sfLinkType = "00N50000001dC40"
var sfMonthYear = "N/A"
var sfCampaign = "00N50000001fWLl"
var sfMedium = "00N50000001fWMs"

// 3.	Using the form values generated by Salesforce, add the appropriate hidden form fields to the website's form.  
//		Finally, call the function ParseSearchQuery as an onsubmit javascript action from your form(s).  This will properly
//		populate the hidden variables on your form as well as deleting the cookies. 

// 4.	If you want to track campaigns such as email campaigns, you can use the utm_medium and utm_source parameters
//		in the parameter. utm_medium will track the type of campaign (email, television, radio), and the 
//		utm_source will track the specific campaign (idaho email, for example). this will be put into the 
//		Campaign Channel and Web Campaign fields, respectively.

//5.	For Google, you're ready to go.  For any other paid search effort, a custom tag must be appended to the landing page URL
//		Currently, that tag is "paidSearch"  Both this tag and the native Google tag can be changed here:

var adwordsTag = "_kk";
var generalTag = "paidSearch";

rawDate = Date()
splitDate = rawDate.split(" ")
monthYear = splitDate[1] + " " + splitDate[3]

SetRef();


function Map()
{
	// members
	this.keyArray = new Array(); // Keys
	this.valArray = new Array(); // Values
		
	// methods
	this.put = put;
	this.get = get;
	this.size = size;  
	this.clear = clear;
	this.keySet = keySet;
	this.valSet = valSet;
	this.showMe = showMe;   // returns a string with all keys and values in map.
	this.findIt = findIt;
	this.remove = remove;
}

function put( key, val )
{
	var elementIndex = this.findIt( key );
	
	if( elementIndex == (-1) )
	{
		this.keyArray.push( key );
		this.valArray.push( val );
	}
	else
	{
		this.valArray[ elementIndex ] = val;
	}
}

function get( key )
{
	var result = null;
	var elementIndex = this.findIt( key );

	if( elementIndex != (-1) )
	{   
		result = this.valArray[ elementIndex ];
	}  
	return result;
}

function remove( key )
{
	var result = null;
	var elementIndex = this.findIt( key );

	if( elementIndex != (-1) )
	{
		this.keyArray = this.keyArray.removeAt(elementIndex);
		this.valArray = this.valArray.removeAt(elementIndex);
	}  
	return ;
}

function size()
{
	return (this.keyArray.length);  
}

function clear()
{
	for( var i = 0; i < this.keyArray.length; i++ )
	{
		this.keyArray.pop(); this.valArray.pop();   
	}
}

function keySet()
{
	return (this.keyArray);
}

function valSet()
{
	return (this.valArray);   
}

function showMe()
{
	var result = "";
	
	for( var i = 0; i < this.keyArray.length; i++ )
	{
		result += "Key: " + this.keyArray[ i ] + "\tValues: " + this.valArray[ i ] + "\n";
	}
	return result;
}

function findIt( key )
{
	var result = (-1);

	for( var i = 0; i < this.keyArray.length; i++ )
	{
		if( this.keyArray[ i ] == key )
		{
			result = i;
			break;
		}
	}
	return result;
}

function removeAt( index )
{
  var part1 = this.slice( 0, index);
  var part2 = this.slice( index+1 );

  return( part1.concat( part2 ) );
}
Array.prototype.removeAt = removeAt;


function GetCookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f
	
	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );
		
		
		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');
	
		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}

function DeleteCookie( name, path, domain ) {
// this deletes the cookie when called
	if ( GetCookie( name ) ) {		
		document.cookie = name + "=" +
		( ( path ) ? ";path=" + path : "") +
		( ( domain ) ? ";domain=" + domain : "" ) +
		";expires=Thu, 01-Jan-1970 00:00:01 GMT";
	}
}

function SetCookie( name, value, expires, path, domain, secure ) {
	// set time, it's in milliseconds
	var today = new Date();

	today.setTime( today.getTime() );
	/*
	if the expires variable is set, make the correct 
	expires time, the current script below will set 
	it for x number of days, to make it for hours, 
	delete * 24, for minutes, delete * 60 * 24
	*/

	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}

	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name + "=" +escape( value ) +
	( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
	( ( path ) ? ";path=" + path : "" ) + 
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
}

function GetDomain(url) { 
	if(url) { 
		var domain = url.match( /:\/\/(www\.)?([^\/:]+)/ );
        domain = domain[2]?domain[2]:'';
        return domain;
    }
}

function SetRef() {
	var ref = document.referrer;
	var doc = document.URL;
    if (GetDomain(ref) != GetDomain(doc)) {
		if (GetCookie('PDTSref') == null) {
			SetCookie('PDTSref',ref, 365, "/",GetDomain(doc));
		}
		if (GetCookie('PDTSlanding') == null) {
			SetCookie('PDTSlanding',doc, 365, "/",GetDomain(doc));
		}
    }

}       

function GetQueryParams(urlString,resultHash) {
  var queryString;
  var pairs;
  var stringPairs;
  var keyval;
  
  //alert("refUrl is: " + urlString);
	if(urlString.indexOf("?")>-1) {

  		//Get everything to the right of the "?"
  		queryString = urlString.split("?")[1];

  		// split the query string
  		pairs = queryString.split( "&" );
		//alert ("pairlength: "+pairs.length);
  		for ( var i=0;i<=(pairs.length-1);i++) {
			//alert("count="+i+" val:"+pairs[i]);
    		keyval = pairs[i].split("=");
    		resultHash.put(keyval[0], keyval[1]);
  		}
	//alert("pairsplit loop completed");
	}
  return resultHash;
}

function ParseSearchQuery() {

// 2-part activity
// Step 1: parse between direct and referrer
// Step 2: Get Seach terms if result is a search engine
// additional var/value combinations from the url script
// that don't require parsing are simply stored in the hashmap
	
	var refUrl
	var searchTerms
	var landingPage
	var linkType;
	var searchParam;
	var refDomain;
	var resultHash = new Map();
	
	landingPage = GetCookie('PDTSlanding');
	refUrl = GetCookie('PDTSref');

/*
	// test parameters
	landingPage = "www.purevisibility.com"; 
	refUrl = "http://www.google.com?utm_source=source&utm_medium=medium&q=findTHIS";
*/

	// Step 1. This check is for direct visits to the site
	// if it's a direct visit then load this list
  if (!(refUrl)) {  
    refUrl=null;
    refDomain="Direct";
    linkType="Direct";
    searchTerms=null;
    
	// otherwise it's a referrer, so we
	// 1) Need to parse the cookie data    
	// 2) need to get search engine data if need be
  } else {

		refDomain = GetDomain(refUrl);

		// This check parses referrals from search engines
		// and defines the search as a search engine or a referral
		if (refDomain.indexOf("yahoo") > -1) {
			searchParam = "p";
		}else if (refDomain.indexOf("aol") > -1) {
			searchParam = "query";
		}else if (refDomain.indexOf("netscape") > -1) {
			searchParam = "query";
		}else if (refDomain.indexOf("google") > -1) {
			searchParam = "q";
		}
	
		// grab parameters from the referrer page and set search terms
		resultHash = GetQueryParams(refUrl,resultHash); 
		searchTerms = resultHash.get(searchParam); 
	
		// grab parameters from the landing page
		resultHash = GetQueryParams(landingPage,resultHash);

		// This check identifies the referral linkType 
		if (searchParam){
			if (landingPage.indexOf(adwordsTag) > -1){
				linkType = "Paid Search";		
			}
			else if (landingPage.indexOf(generalTag) > -1) {
				linkType = "Paid Search";
			} else {
				linkType = "Natural Search";
			}						
		} else {
			linkType= "Referral";
		}
	}

	//alert("set hashmap results");
	// Set Result HashMap
  resultHash.put("refUrl", refUrl);
  resultHash.put("refDomain",refDomain);
  resultHash.put("searchTerms",searchTerms);
  resultHash.put("landingPage",landingPage);
  resultHash.put("linkType",linkType);

/*
	alert(resultHash.size());  
	alert(resultHash.showMe());
*/

	// Submit Data Results	
	SetSubmitValues(resultHash);
	
	//delete cookie so that we can do this fun again!	
	DeleteCookie('PDTSref', "/",GetDomain(landingPage));
	DeleteCookie('PDTSlanding', "/",GetDomain(landingPage));
}

function SetSubmitValues(resultHash) {
	
	if(resultHash.get("refUrl")){
		document.getElementById(sfRefUrl).value = resultHash.get("refUrl");
	}	
	
	if(resultHash.get("refDomain")){		
		document.getElementById(sfRefDomain).value = resultHash.get("refDomain"); 
	}
		
	if(resultHash.get("searchTerms")){				
		document.getElementById(sfSearchTerms).value = resultHash.get("searchTerms");
	}	
			
	if(resultHash.get("landingPage")){		
		document.getElementById(sfLandingPage).value = resultHash.get("landingPage");
	}	
		
	if(resultHash.get("linkType")){		
		document.getElementById(sfLinkType).value = resultHash.get("linkType");
	}			
		
	if(resultHash.get("monthYear")){		
		document.getElementById(sfMonthYear).value = resultHash.get("monthYear");
	}	
		
	if(resultHash.get("utm_source")){		
		document.getElementById(sfCampaign).value = resultHash.get("utm_source");
	}	
	
	if(resultHash.get("utm_medium")){		
		document.getElementById(sfMedium).value = resultHash.get("utm_medium");
	}
	
	//alert("results entered and submitted.");

}