/*********************************************************/
/* FlowCheck.js -- An impression and click tracking bug. */
/* Designed to track coupons from DealRiver.             */
/* Dependencies: jQuery 1.3                              */
/*********************************************************/

function FlowCheck(configObj) {
  var thisObj = this;
  // define tracked site
  this.dataImg = null;
  var site = configObj.site;
  this.init = function(){
    // create comunication object
    // using image tag GET hack
    this.dataImg = $("#river_img").get(0);
    this.countImpressions();
  };
  this.countImpressions = function(){
    var referrerUrl = document.referrer;
    var pageUrl = location.href;
    var impressions = [];
    var dataObj = null;
    
    // Get coupon nodes
    $("."+configObj.className).each(function(i){
      var couponid = this.id;
      var couponTemp = couponid;
      if(configObj.couponIdPrefix) couponTemp = couponid.replace(configObj.couponIdPrefix,"");
      var couponParts = couponTemp.split("_");
      impressions[i] = {
        rmid : couponParts[0],
        pcid : couponParts[1] || ""
      };
      dataObj = {
        refer : referrerUrl,
        page : pageUrl,
        imp : impressions
      };
      // run local prewire code if existing
      if(thisObj.localCouponWire) thisObj.localCouponWire(this);
      // attach onclick events
      $("a",this).each(function(i){
        var suffix =  (thisObj.localLinkIdSuffix) ? thisObj.localLinkIdSuffix(this,couponid) || i.toString() : i.toString();
        this.id =  couponid + "_" + suffix;
        $(this).bind("click",function(e){ thisObj.handleClick(e); });
      });
    });
    if(impressions.length > 0) thisObj.sendMessage('impressions',dataObj);
  };
  this.handleClick = function(e) {
    e.stopPropagation();
    var node = e.target;
    if(node.tagName.toLowerCase() == "img") node = findParentAnchor(node);
    if(this.localClickHandler) localClickHandler(node);
    var clickData = (this.localClickDataObject) ? this.localClickDataObject(node) : {
      site: site,
      page: location.pathname,
      couponid: couponid,
      url: url
    };
    if(clickData == null) return true;
    thisObj.sendMessage('click',clickData);
  };
  // send message
  this.sendMessage = function(messageType, params) {
    //serialize params
    var myJSONText = JSON.stringify(params);
    // build query string
    var queryString = configObj.serverHost+configObj.serverFilePath+"?params="+escape(myJSONText);
    $(thisObj.dataImg).attr("src",queryString); 
  };
  this.init();
}

/****************************************************/
// JSON2 minified... by Douglas Crockford
if(!this.JSON){JSON={};}
(function(){function f(n){return n<10?'0'+n:n;}
if(typeof Date.prototype.toJSON!=='function'){Date.prototype.toJSON=function(key){return this.getUTCFullYear()+'-'+
f(this.getUTCMonth()+1)+'-'+
f(this.getUTCDate())+'T'+
f(this.getUTCHours())+':'+
f(this.getUTCMinutes())+':'+
f(this.getUTCSeconds())+'Z';};String.prototype.toJSON=Number.prototype.toJSON=Boolean.prototype.toJSON=function(key){return this.valueOf();};}
var cx=/[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,escapable=/[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,gap,indent,meta={'\b':'\\b','\t':'\\t','\n':'\\n','\f':'\\f','\r':'\\r','"':'\\"','\\':'\\\\'},rep;function quote(string){escapable.lastIndex=0;return escapable.test(string)?'"'+string.replace(escapable,function(a){var c=meta[a];return typeof c==='string'?c:'\\u'+('0000'+a.charCodeAt(0).toString(16)).slice(-4);})+'"':'"'+string+'"';}
function str(key,holder){var i,k,v,length,mind=gap,partial,value=holder[key];if(value&&typeof value==='object'&&typeof value.toJSON==='function'){value=value.toJSON(key);}
if(typeof rep==='function'){value=rep.call(holder,key,value);}
switch(typeof value){case'string':return quote(value);case'number':return isFinite(value)?String(value):'null';case'boolean':case'null':return String(value);case'object':if(!value){return'null';}
gap+=indent;partial=[];if(Object.prototype.toString.apply(value)==='[object Array]'){length=value.length;for(i=0;i<length;i+=1){partial[i]=str(i,value)||'null';}
v=partial.length===0?'[]':gap?'[\n'+gap+
partial.join(',\n'+gap)+'\n'+
mind+']':'['+partial.join(',')+']';gap=mind;return v;}
if(rep&&typeof rep==='object'){length=rep.length;for(i=0;i<length;i+=1){k=rep[i];if(typeof k==='string'){v=str(k,value);if(v){partial.push(quote(k)+(gap?': ':':')+v);}}}}else{for(k in value){if(Object.hasOwnProperty.call(value,k)){v=str(k,value);if(v){partial.push(quote(k)+(gap?': ':':')+v);}}}}
v=partial.length===0?'{}':gap?'{\n'+gap+partial.join(',\n'+gap)+'\n'+
mind+'}':'{'+partial.join(',')+'}';gap=mind;return v;}}
if(typeof JSON.stringify!=='function'){JSON.stringify=function(value,replacer,space){var i;gap='';indent='';if(typeof space==='number'){for(i=0;i<space;i+=1){indent+=' ';}}else if(typeof space==='string'){indent=space;}
rep=replacer;if(replacer&&typeof replacer!=='function'&&(typeof replacer!=='object'||typeof replacer.length!=='number')){throw new Error('JSON.stringify');}
return str('',{'':value});};}
if(typeof JSON.parse!=='function'){JSON.parse=function(text,reviver){var j;function walk(holder,key){var k,v,value=holder[key];if(value&&typeof value==='object'){for(k in value){if(Object.hasOwnProperty.call(value,k)){v=walk(value,k);if(v!==undefined){value[k]=v;}else{delete value[k];}}}}
return reviver.call(holder,key,value);}
cx.lastIndex=0;if(cx.test(text)){text=text.replace(cx,function(a){return'\\u'+
('0000'+a.charCodeAt(0).toString(16)).slice(-4);});}
if(/^[\],:{}\s]*$/.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,'@').replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,']').replace(/(?:^|:|,)(?:\s*\[)+/g,''))){j=eval('('+text+')');return typeof reviver==='function'?walk({'':j},''):j;}
throw new SyntaxError('JSON.parse');};}})();

/**********END LIBRARY*******************/

// initialization
$(document).ready(function(){
  // load local configuration data and initialize tracker
  $.getScript("http://"+location.host+"/js/trackingConfig.js", function(){ var flowCheckObj = new FlowCheck(configObj) });
});