extend script convert to apple script

Hello,  could help me to convert below extend script to apple script, thanks.

Convert path of PDF to artboard.

#target illustrator

app.preferences.setBooleanPreference("ShowExternalJSXWarning", false);
var lines = {"x", "y", "g"}; 
var oldPdfName = lines [0];
var newPdfName = lines [1];
var folderPath = lines [2];
app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS; 
var pdfOptions = app.preferences.PDFFileOptions;
pdfOptions.pageRangeToOpen = "all"; 
pdfOptions.placeAsLinks = false;
var idoc = app.open(File(folderPath + "/" + oldPdfName), DocumentColorSpace.CMYK); 
app.userInteractionLevel = UserInteractionLevel.DISPLAYALERTS;

function getColor(pathItem) {
var isRightColor;
if (pathItem.strokeColor instanceof SpotColor) { 
var strokeColorName = pathItem.strokeColor.spot.name;
if (strokeColorName === "Diecut") {
isRightColor = "macColor"; 
}
else if(strokeColorName === "PFLW"){
isRightColor = "newPcColor"; 
}
}
return isRightColor;
}

var doc = app.activeDocument;
var artb = doc.artboards;
var artLayer = doc.layers[0];
var boardCount = artb.length; 
var glen = artLayer.groupItems; 

var pathColor;
var firstTopGroup = artLayer.groupItems[glen.length-1]; 
var firstGroupPaths;
if(boardCount === 1){ 
firstGroupPaths = artLayer.pathItems;
}else{
var firstClipGroup = firstTopGroup.groupItems[0]; 
firstGroupPaths = firstClipGroup.pathItems; 
}

for (var i = firstGroupPaths.length-1; i >=0; i--) {
var firstGroupPathItem = firstGroupPaths[i];
if (getColor(firstGroupPathItem ) === "macColor"){
pathColor = "macColor";
break;
} else if (getColor(firstGroupPathItem ) === "newPcColor"){
pathColor = "newPcColor";
break;
}
}
for(var u = glen.length-1; u>=0; u--){
var topGroup = artLayer.groupItems[u]; 
var paths;
if(boardCount === 1){ 
paths = artLayer.pathItems;
}else{
var clipGroup = topGroup.groupItems[0]; 
paths = clipGroup.pathItems; 
}

var whiteRectangles = [];
for (var i = paths.length-1; i >=0; i--) {
var pathItem = paths[i];
if (pathColor === "macColor"){
if(getColor(pathItem) === "macColor"){
if(pathItem.pathPoints.length === 4){
whiteRectangles.push(pathItem);
}else{
pathItem.remove();
}
}
}
else if(pathColor === "newPcColor"){
if(getColor(pathItem) === "newPcColor"){whiteRectangles.push(pathItem);}
}
else if(typeof pathColor === 'undefined'){
if(pathItem.pathPoints.length === 4){
if(pathItem.strokeColor.cyan == 0 && pathItem.strokeColor.magenta == 0 && pathItem.strokeColor.yellow == 0 && pathItem.strokeColor.black == 0){
whiteRectangles.push(pathItem);
}
}
}
}

if(whiteRectangles.length > 0){
for (var a=0; a<whiteRectangles.length; a++) {
whiteRectangles[a].selected = true;
var pathBds = whiteRectangles[a].geometricBounds;
whiteRectangles[a].remove();
artb.add(pathBds);
}}

}

for(var j=0; j<boardCount; j++){
artb[0].remove ();
}

function saveAsPDF() {
var pdfFile = new File(folderPath + "/" + newPdfName + ".pdf");
var pdfOptions = new PDFSaveOptions();
pdfOptions.compatibility = PDFCompatibility.ACROBAT5;
pdfOptions.generateThumbnails = true; 
pdfOptions.preserveEditability = true;
pdfOptions.preset = "[High Quality Print]"; //High Quality Print, Smallest File Size
app.activeDocument.saveAs(pdfFile, pdfOptions);
}
saveAsPDF();
doc.close();