how to get a specific function to repeat through all artboards in a document?

[spaciousmind]

Greetings,

with my limited knowledge I've made (or rather clumsily hacked together) a script that I use for exporting proof pdf's from illustrator that will simply draw a rectangle with a thin stroke around my document and save a pdf, then delete the rectangle and resave the .AI file (this last part is just to speed things up, so I can keep working on my ai file afterwards).

This all works perfectly fine on a document with only one artboard, however the whole thing falls apart if I want to make a multipage pdf with more than one artboards.
I need it to do the same actions but instead of just drawing the rectangle once I want it to draw it around every artboard in my document.
I realise this is probably easily achieved by looping through my artboards I just don't know how to go about it.

I've included the script I'm using in full below, it probably has quite a few redundant bits here or there, but hopefully you can make sense of it 

var idoc = app.activeDocument;  
var width = idoc.width;
var height = idoc.height;
newCMYKColor = new CMYKColor;
newCMYKColor.black = 100;
newCMYKColor.cyan = 0;
newCMYKColor.magenta = 0;
newCMYKColor.yellow = 0;    
var CurrentPath = activeDocument.path;
var folderPDF = Folder(CurrentPath);
if(!folderPDF.exists) folderPDF.create();
var docName = app.activeDocument.name.match(/^.*[^.ai]/i); 
var myDoc = app.activeDocument.name.match();
        if (folderPDF) {
            if ( app.documents.length > 0 ) {
                var destFile = new File(folderPDF + '/' + docName + "_HR");
                var sourceDoc = app.activeDocument; 
                targetFile = getNewName();
                targetFileAI = getNewNameAI();
                pdfSaveOpts = getPDFOptions( );
                illustratorSaveOpts = getAIOptions();
                var rectangle = idoc.pathItems.rectangle(0, 0, width, height);
                rectangle.filled = false;
                rectangle.strokeColor = newCMYKColor;
                rectangle.strokeWidth = 1;
                sourceDoc.saveAs( targetFile, pdfSaveOpts );
                rectangle.remove()     
                sourceDoc.saveAs( targetFileAI, illustratorSaveOpts );
                }
            }
function getNewName()
{
    var ext, docName, newName, saveInFile, docName;
    docName = sourceDoc.name;
    ext = '_HR_CMYK_PROOF_nobleed.pdf'; 
    newName = "";        
    for ( var i = 0 ; docName != "." ; i++ )
    {
        newName += docName;
    }
    newName += ext; 
    saveInFile = new File( folderPDF + '/' + newName );    
    return saveInFile;
}
function getNewNameAI()
{
    saveInFileAI = new File( folderPDF + '/' + sourceDoc.name );
    return saveInFileAI;
}
function getPDFOptions()
{
    var pdfSaveOpts = new PDFSaveOptions();
    pdfSaveOpts.pDFPreset = "Inferno Print File (no bleed)";
    return pdfSaveOpts;
}
function getAIOptions()
{
    var illustratorSaveOpts = new IllustratorSaveOptions();
    illustratorSaveOpts.pdfCompatible = false;
    return illustratorSaveOpts;
}

[moluapple · Accepted solution]

Not tested yet, but it should work

var idoc = app.activeDocument;
newCMYKColor = new CMYKColor;
newCMYKColor.black = 100;
newCMYKColor.cyan = 0;
newCMYKColor.magenta = 0;
newCMYKColor.yellow = 0;
var CurrentPath = activeDocument.path;
var folderPDF = Folder(CurrentPath);
if (!folderPDF.exists) folderPDF.create();
var docName = app.activeDocument.name.match(/^.*[^.ai]/i); 
// "/^.*[^.ai]/" is strange, it will match all of the name. 
// so above code = 
// var docName = app.activeDocument.name;
// maybe you should use /^.*(?=\.ai$)/
if (folderPDF) {
    if (app.documents.length > 0) {
        var destFile = new File(folderPDF + '/' + docName + "_HR");
        var sourceDoc = app.activeDocument;
        targetFile = getNewName();
        targetFileAI = getNewNameAI();
        pdfSaveOpts = getPDFOptions();
        illustratorSaveOpts = getAIOptions();
        var artboardRef = sourceDoc.artboards;
        var rectLayer = sourceDoc.layers.add(); // so all rectangles will add to this layers
        // add rect for all artboards
        for (i = 0; i < artboardRef.length; i++) {
            var top = artboardRef.artboardRect[1];
            var left = artboardRef.artboardRect[0];
            var width = artboardRef.artboardRect[2] - artboardRef.artboardRect[0];
            var height = artboardRef.artboardRect[1] - artboardRef.artboardRect[3];
            var rect = docRef.pathItems.rectangle(top, left, width, height);
            rect.filled = false;
            rect.strokeColor = newCMYKColor;
            rect.strokeWidth = 1;
        }
        sourceDoc.saveAs(targetFile, pdfSaveOpts);
        rectLayer.remove(); // remove layer to remove all rectangles
        sourceDoc.saveAs(targetFileAI, illustratorSaveOpts);
    }
}
function getNewName() {
    var ext, docName, newName, saveInFile, docName;
    docName = sourceDoc.name;
    ext = '_HR_CMYK_PROOF_nobleed.pdf';
    newName = "";
    for (var i = 0; docName != "."; i++) {
        newName += docName;
    }
    newName += ext;
    saveInFile = new File(folderPDF + '/' + newName);
    return saveInFile;
}
function getNewNameAI() {
    saveInFileAI = new File(folderPDF + '/' + sourceDoc.name);
    return saveInFileAI;
}
function getPDFOptions() {
    var pdfSaveOpts = new PDFSaveOptions();
    pdfSaveOpts.pDFPreset = "Inferno Print File (no bleed)";
    return pdfSaveOpts;
}
function getAIOptions() {
    var illustratorSaveOpts = new IllustratorSaveOptions();
    illustratorSaveOpts.pdfCompatible = false;
    return illustratorSaveOpts;
}

[spaciousmind]

Thanks heaps Moluapple. This works perfectly