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//
var xmlpath = "costdata.xml";
var xmlDoc;
var weightDoc;
var debug = true;

/*
Find zone returns the zone name
*/
function findZone(postal)
{
	var found = false;
	var z1 = z1_start.length;
	var z2 = z2_start.length;
	var z3 = z3_start.length;
	var z4 = z4_start.length;
	var z5 = z5_start.length;
	var z6 = z6_start.length;
	var z7 = z7_start.length;
	var z8 = z8_start.length;
	var z9 = z9_start.length;
	var Zone = null;
	
	/*
	//check to see if postcode is in zone1
	*/
	for(var i=0; i <= z1; i++){
		if((postal >= z1_start[i]) && (postal <= z1_end[i])){
			Zone = "1";
			found = true;
		}
	}
	//zone 2
	if(found==false)
	{
		for(var j=0; j <= z2; j++){
			if((postal >= z2_start[j]) && (postal <= z2_end[j])){
				Zone = "2";
				found = true;	
			}
		}
	}
	//zone 3
	if(found==false)
	{
		for(var k=0; k <= z3; k++){
			if((postal >= z3_start[k]) && (postal <= z3_end[k])){
				Zone = "3";
				found = true;
			}
		}
	}
	//zone 4
	if(found==false)
	{
		for(var i1=0; i1 <= z4; i1++){
			if((postal >= z4_start[i1]) && (postal <= z4_end[i1])){
				Zone = "4";
				found = true;
			}
		}
	}
	
	//zone 5
	if(found==false)
	{
		for(var j1=0; j1 <= z5; j1++){
			if((postal >= z5_start[j1]) && (postal <= z5_end[j1])){
				Zone = "5";
				found = true;
			}
		}
	}
	//zone 6
	if(found==false)
	{
		for(var k1=0; k1 <= z6; k1++){
			if((postal >= z6_start[k1]) && (postal <= z6_end[k1])){
				Zone = "6";
				found = true;
			}
		}
	}
	//zone 7
	if(found==false)
	{
		for(var i2=0; i2 <= z7; i2++){
			if((postal >= z7_start[i2]) && (postal <= z7_end[i2])){
				Zone = "7";
				found = true;
			}
		}
	}
	//zone 8
	if(found==false)
	{
		for(var j2=0; j2 <= z8; j2++){
			if((postal >= z8_start[j2]) && (postal <= z8_end[j2])){
				Zone = "8";
				found = true;
			}
		}
	}
	//zone 9
	if(found==false)
	{
		for(var k2=0; k2 <= z9; k2++){
			if((postal >= z9_start[k2]) && (postal <= z9_end[k2])){
				Zone = "9";
				found = true;
			}
		}
	}
	if(found==true)
	{
		return Zone;
	}else{
		return false;
	}
}

function findDeadweight(scode)
{
	var productsitems = weightDoc.getElementsByTagName("product");

	for (var k=0; k<productsitems.length; k++)
	{
		if(productsitems[k].getAttribute("code")==scode)
		{
			if(debug==true)
			{
				//console.log("Found Product Code in XML");
			}
			var returnDw = productsitems[k].getAttribute("dw")
			return returnDw;
		}
	}
}


function getWeightZone(sweight,pcode)
{
	
	//weight is now the product code
	var weight = findDeadweight(sweight);
	
	if(debug==true)
	{
		alert("Received weight is :"+weight);
		alert("Received pcode is :"+pcode);
	}
	//If I have my Zone then I only need to check against some weight classes
	if (!xmlDoc) {
		// most current browsers support document.implementation
		//loadXML();
		alert("Page is still loading, Please try again");
	}
	//Test the postcode is valid
	if (pcode==null||pcode==""||pcode.length < 3||pcode.length >4) {
		alert("Please enter a valid Australian Postcode that contains 4 numbers, or 3 numbers if your postcode starts with a 0");
	}else{

		var Zone = findZone(pcode);
		
		if(debug==true)
		{
			//console.log("Found Zone :"+Zone);
		}
		
		if(Zone == false)
		{
			alert(pcode+" was not found in our delivery zone");	
		}else{
		
		var allitems = xmlDoc.getElementsByTagName("zone");
		
		if(debug==true)
		{
			//console.log("XML Packet :"+allitems);
		}
		
		for (var i=0; i<allitems.length; i++)
		  {
			if(allitems[i].getAttribute("id")==Zone)
			{
				if(debug==true)
				{
					//console.log("Found Zone in XML");
				}
				
				var classes = allitems[i].getElementsByTagName("class");
				for(var j=0; j<classes.length; j++)
				{
						
						if(debug==true)
						{
							//console.log("Inside Classes for each loop");
						}
					if(isNaN(weight)){
						//console.log("Weight is not a number");
					}
					
					if(isNaN(classes[j].getAttribute("to"))){
						//console.log("TO is not a number");
					}
					var to = roundNumber(classes[j].getAttribute("to"),2);
					
					if(isNaN(classes[j].getAttribute("from"))){
						//console.log("FROM is not a number");
					}
					var from = roundNumber(classes[j].getAttribute("from"),2);
					
					weight = roundNumber(weight,2);
					
					if(weight<=to)
					{
						if(weight>=from)
						{
							
							//console.log("The attr for TO weight is:"+to);
							//console.log("The attr for FROM weight is:"+from);
							//console.log("The weight is: "+weight);
							
							var dollarvalue = (classes[j].getAttribute("cost")*1.1);
							dollarvalue = roundNumber(dollarvalue, 2);
							var completeResponse = ("Shipping fee to <b>"+pcode+"</b> is <b>$"+dollarvalue);
							return(completeResponse);
						}
					}
				}
			}
		  }
		}
	}
}

function roundNumber(num, dec)
{
	var result = Math.round(num*Math.pow(10,dec))/Math.pow(10,dec);
	return result;
}

function loadXML() { // load indexfile
// most current browsers support document.implementation
	if (document.implementation.createDocument) {
        var parser = new DOMParser()
        xmlDoc = parser.parseFromString(xmlString, "text/xml")
    // MSIE
    } else if (window.ActiveXObject) {
        xmlDoc = new ActiveXObject("Microsoft.XMLDOM")
        xmlDoc.async="false"
        xmlDoc.loadXML(xmlString)
    }
	
	if (document.implementation.createDocument) {
        var parser = new DOMParser()
        weightDoc = parser.parseFromString(productString, "text/xml")
    // MSIE
    } else if (window.ActiveXObject) {
        weightDoc = new ActiveXObject("Microsoft.XMLDOM")
        weightDoc.async="false"
        weightDoc.loadXML(productString)
    }
}