/*
Universal Cookie Cutter
Version 2.1
Created to streamline cross-brand A/B testing
New version modularizes variables

instantiate new object:

MyCookieCutter = new universalCookieCutter([CookieVarName],      // name of your cookie variable
										   [CookieUsedName],     // name of cookie used (usually 'mktUniversalPersist')
										   [CookieValueBase],    // name of base cookie value so AB tests can be distinguished (ONOctFSEG)
										   [ForcedModeBaseName], // distinct base string for forced mode, (oldnavyabmode), etc
										   [SegmentBreakdown]    // segment breakdowns separated by "-" (80-10-10) highest to lowest values
										   [eVar you are using]  // OPTIONAL can be either ABTestVariables.eVar24 or ABTestVariables.eVar36 - enter either "24", "36" or "" (blank)
										   [Piperlime-only segment] // Piperlime often doesn't segment, scan for this variable and overwrite it. 
										   );
A sample instantiation:

ONBRABCookieCutter = new universalCookieCutter("ONBRAB","mktUniversalPersist","ONBRDecXSEG","onbrabmode","70-10-10-5-5","24","0625FSSegE");
										   
*/

var universalCookieCutter = Class.create();


universalCookieCutter.prototype = {

	initialize:function(CookieVarName,CookieUsedName,CookieValueBase,ForcedModeBaseName,SegmentBreakdown,theEvar,plExcept) {

		//Keeping it neat by having two discreet variables that check for and gather cookie information
        this.EvarToUse = theEvar != "" ? theEvar : false;
        this.CookieVariableName = CookieVarName;
        this.CookieUsed = CookieUsedName;
        this.CookieValueBase = CookieValueBase;
        this.SegBreakdown = SegmentBreakdown.split("-");
        this.DoesTheCookieExist = gidLib.getCookieVar(this.CookieUsed, this.CookieVariableName);
        this.RetrievedCookieValue = gidLib.getCookieVar(this.CookieUsed, this.CookieVariableName);
        this.QuickSegment = '';
        this.piperlimeException = plExcept;
        this.userNeedsSync = false;
        this.ForcedModeBase = ForcedModeBaseName;
        this.ModeArrayIndex = this.SegBreakdown.length; //segment breakdown determines how many segments too!
        this.modeArray = new Array();
        this.modeArray[0] = "a";
        this.modeArray[1] = "b";
        this.modeArray[2] = "c";
        this.modeArray[3] = "d";
        this.modeArray[4] = "e";
        this.modeArray[5] = "f";
        this.modeArray[6] = "g";
		//alert(this.piperlimeException);
		
		
		if (location.href.indexOf(this.ForcedModeBase) >= 1) {
			this.forcedMode();
		}else{
			this.cookieScanner();
		}
	},


	forcedMode:function() {
		
		for (i = 0; i < this.ModeArrayIndex; i++) {
		
			if (location.href.indexOf(this.ForcedModeBase + "=" + this.modeArray[i]) >= 1) {
				//alert('you are in segment ' + this.modeArray[i].toUpperCase() + ' / ' + this.SegBreakdown[i] + '% of the population');
				this.UserSegment = this.CookieValueBase + this.modeArray[i].toUpperCase();
				this.QuickSegment = this.modeArray[i].toUpperCase();
			}
			
		}
		
		
		gidLib.setCookieVar(this.CookieUsed,this.CookieVariableName,this.UserSegment);
        if (this.EvarToUse) {
            
            this.setABTestVariable(this.UserSegment);
        }

        userNeedsSync = true;
		//alert("Forced: Cookie set.");
		
	
	},

	cookieScanner:function() {
		
		//If the cookie isn't available, bake one!
        if (this.DoesTheCookieExist) {

            if (this.EvarToUse) {
                this.setABTestVariable(this.RetrievedCookieValue);
            }

            for (i = 0; i < this.ModeArrayIndex; i++) {
                if (this.RetrievedCookieValue == (this.CookieValueBase + this.modeArray[i].toUpperCase())) {
                    this.QuickSegment = this.modeArray[i].toUpperCase();
                    break;
                }
            }

        } else {
            this.tagManager();
        }

    },


	tagManager:function() {

	
		//Breaking out the segmentation into specified percentages
		
		this.Segmentation = Math.floor((Math.random()*100)+1); // chooses 1 to 100
		//alert("Seg: " + this.Segmentation);	
		this.FloorThreshold = 0;
		this.TopThreshold = 0;
		
		for (i = 0; i < this.ModeArrayIndex; i++){

			this.TopThreshold = this.FloorThreshold + parseInt(this.SegBreakdown[i]);

			if ((this.Segmentation > this.FloorThreshold) && (this.Segmentation <= this.TopThreshold)){
				// put me in this segment
				this.UserSegment = this.CookieValueBase + this.modeArray[i].toUpperCase();
				this.QuickSegment = this.modeArray[i].toUpperCase();
				break;
			} else {
				// add top to floor and try next segment
				this.FloorThreshold = this.TopThreshold;
			}
				
		}
		
		gidLib.setCookieVar(this.CookieUsed,this.CookieVariableName,this.UserSegment);

        if (this.EvarToUse) {
            this.setABTestVariable(this.UserSegment);
        }

		//userNeedsSync = true;
		//alert("Tag Manager: Cookie set.");
		
	},
	
	    setABTestVariable: function(setValue) {
        thisEvar = 'eVar' + this.EvarToUse;
        ABTestVariables[thisEvar] = setValue;
    }

	
};