Script to stroke, change canvas size and place file name

Hello to you all.

I am at least new to scripting and even more to Photoshop.

The case:

I am trying to use JavaScript to create a way to make a repeatable process in Photoshop.

What I want to do is the following:

1. In a file, select all and create a stroke, CMYK 100%Y, 2px, inside. Works
2. Increase canvas size by 30px (1cm in 72dpi) on the top side.
3. Place the file name in the top-left corner of the canvas. Works

In case we can do it, it would be the best to use this in a a bunch of files.

Following what I have already done. Be gentle, it is a puzzle of internet, actions and me.

// this script is a variation of the script addTimeStamp.js that is installed with PH7

//

//==================== stroke 2px and canvas size 1cm top ==============

//

#target photoshop

cTID = function(s) { return app.charIDToTypeID(s); };

sTID = function(s) { return app.stringIDToTypeID(s); };

function stroke2pxandcanvassize1cmtop() {

  // Set

  function step1(enabled, withDialog) {

    if (enabled != undefined && !enabled)

      return;

    var dialogMode = (withDialog ? DialogModes.ALL : DialogModes.NO);

    var desc1 = new ActionDescriptor();

    var ref1 = new ActionReference();

    ref1.putProperty(cTID('Chnl'), sTID("selection"));

    desc1.putReference(cTID('null'), ref1);

    desc1.putEnumerated(cTID('T   '), cTID('Ordn'), cTID('Al  '));

    executeAction(cTID('setd'), desc1, dialogMode);

  };

  // Stroke

  function step2(enabled, withDialog) {

    if (enabled != undefined && !enabled)

      return;

    var dialogMode = (withDialog ? DialogModes.ALL : DialogModes.NO);

    var desc1 = new ActionDescriptor();

    desc1.putInteger(cTID('Wdth'), 2);

    desc1.putEnumerated(cTID('Lctn'), cTID('StrL'), cTID('Cntr'));

    desc1.putUnitDouble(cTID('Opct'), cTID('#Prc'), 100);

    desc1.putEnumerated(cTID('Md  '), cTID('BlnM'), cTID('Nrml'));

    var desc2 = new ActionDescriptor();

    desc2.putDouble(cTID('Cyn '), 0);

    desc2.putDouble(cTID('Mgnt'), 0);

    desc2.putDouble(cTID('Ylw '), 100);

    desc2.putDouble(cTID('Blck'), 0);

    desc1.putObject(cTID('Clr '), cTID('CMYC'), desc2);

    executeAction(cTID('Strk'), desc1, dialogMode);

  };

  step1();      // Set

  step2();      // Stroke

  };

//=========================================

//                    stroke2pxandcanvassize1cmtop.main

//=========================================

//

stroke2pxandcanvassize1cmtop.main = function () {

  stroke2pxandcanvassize1cmtop();

};

stroke2pxandcanvassize1cmtop.main();

// EOF

"stroke2pxandcanvassize1cmtop.jsx"

// EOF

  // Canvas Size

    var w = app.activeDocument.width;// the width of the document 

    var h = app.activeDocument.height; 

    app.activeDocument.resizeCanvas (w, h+40);   

//

//==================== Add File Name 20 pt Top-Left side ==============

//

if ( documents.length > 0 )

{

    var originalDialogMode = app.displayDialogs;

    app.displayDialogs = DialogModes.ERROR;

    var originalRulerUnits = preferences.rulerUnits;

    preferences.rulerUnits = Units.PIXELS;

    try

    {

        var docRef = activeDocument;

        // Now create a text layer at the front

        var myLayerRef = docRef.artLayers.add();

        myLayerRef.kind = LayerKind.TEXT;

        myLayerRef.name = "Filename";

        var myTextRef = myLayerRef.textItem;

        // strip the extension off

        var fileNameNoExtension = docRef.name;

        fileNameNoExtension = fileNameNoExtension.split( "." );

        if ( fileNameNoExtension.length > 1 ) {

            fileNameNoExtension.length--;

        }

        fileNameNoExtension = fileNameNoExtension.join(".");

        myTextRef.contents = fileNameNoExtension;

        // Size and position of text

        myTextRef.size = 45;

        myTextRef.position = new Array( 0, 35 );

    }

    catch( e )

    {

        // An error occurred. Restore ruler units, then propagate the error back

        // to the user

        preferences.rulerUnits = originalRulerUnits;

        app.displayDialogs = originalDialogMode;

        throw e;

    }

    // Everything went Ok. Restore ruler units

    preferences.rulerUnits = originalRulerUnits;

    app.displayDialogs = originalDialogMode;

}

else

{

    alert( "You must have a document open to add the filename!" );

}