AUTOMATE, BATCH, ACTION, mask import !!!

I found another old Script you might be able change to meet your needs. 

// combine images from  two folders;
// 2016, use it at your own risk;
#target photoshop
// select folders;
var theFolder1 = Folder.selectDialog ("select folder");
if (theFolder1) {
var theFolder2 = Folder.selectDialog ("select other folder");
if (theFolder2 && String(theFolder1) != String(theFolder2)) {
// get files;
var theFiles1 = theFolder1.getFiles(/\.(jpg|tif|eps|psd)$/i);
var theFiles2 = theFolder2.getFiles(/\.(jpg|tif|eps|psd)$/i);
// if more than one image is in the folder and equal number in both;
if (theFiles1.length > 0 && theFiles2.length == theFiles1.length) {
// tif options;
tifOpts = new TiffSaveOptions();
tifOpts.embedColorProfile = true;
tifOpts.imageCompression = TIFFEncoding.TIFFLZW;
tifOpts.alphaChannels = false;
tifOpts.byteOrder = ByteOrder.MACOS;
tifOpts.layers = true;
// do the operation;
for (var m = 0; m < theFiles1.length; m++) {
var theFile = theFiles1[m];
var theOtherFile = theFiles2[m];
// create file;
var myDocument = app.open(File(theFile));
var docName = myDocument.name;
var basename = docName.match(/(.*)\.[^\.]+$/)[1];
var docPath = myDocument.path;
// place the corresponding file;
placeScaleFile (theOtherFile, 0, 0, 100);
//save tif as a copy:
myDocument.saveAs((new File(Folder(theFolder1).parent+"/"+basename+"_combined"+".tif")),tifOpts,true);
myDocument.close(SaveOptions.DONOTSAVECHANGES)
}
};
alert ("done")
}
};
////// get from subfolders //////
function retrieveJPGs (theFolder, theFiles) {
	if (!theFiles) {var theFiles = []};
	var theContent = theFolder.getFiles();
	for (var n = 0; n < theContent.length; n++) {
		var theObject = theContent[n];
		if (theObject.constructor.name == "Folder") {
			theFiles = retrieveJPGs(theObject, theFiles)
			};
		if (theObject.name.slice(-4) == ".jpg" || theObject.name.slice(-4) == ".JPG") {
			theFiles = theFiles.concat(theObject)
			}
		};
	return theFiles
	};
////// place //////
function placeScaleFile (file, xOffset, yOffset, theScale) {
// =======================================================
var idPlc = charIDToTypeID( "Plc " );
    var desc5 = new ActionDescriptor();
    var idnull = charIDToTypeID( "null" );
    desc5.putPath( idnull, new File( file ) );
    var idFTcs = charIDToTypeID( "FTcs" );
    var idQCSt = charIDToTypeID( "QCSt" );
    var idQcsa = charIDToTypeID( "Qcsa" );
    desc5.putEnumerated( idFTcs, idQCSt, idQcsa );
    var idOfst = charIDToTypeID( "Ofst" );
        var desc6 = new ActionDescriptor();
        var idHrzn = charIDToTypeID( "Hrzn" );
        var idPxl = charIDToTypeID( "#Pxl" );
        desc6.putUnitDouble( idHrzn, idPxl, xOffset );
        var idVrtc = charIDToTypeID( "Vrtc" );
        var idPxl = charIDToTypeID( "#Pxl" );
        desc6.putUnitDouble( idVrtc, idPxl, yOffset );
    var idOfst = charIDToTypeID( "Ofst" );
    desc5.putObject( idOfst, idOfst, desc6 );
    var idWdth = charIDToTypeID( "Wdth" );
    var idPrc = charIDToTypeID( "#Prc" );
    desc5.putUnitDouble( idWdth, idPrc, theScale );
    var idHght = charIDToTypeID( "Hght" );
    var idPrc = charIDToTypeID( "#Prc" );
    desc5.putUnitDouble( idHght, idPrc, theScale );
    var idLnkd = charIDToTypeID( "Lnkd" );
    desc5.putBoolean( idLnkd, false );
executeAction( idPlc, desc5, DialogModes.NO );
return app.activeDocument.activeLayer;
};

Hello,

thank you for your respond!

I already know that I need a script.

I need to process sequence of images in such way:

Folder 1 contains

sequence:

image1

image2

…

image100

Folder 2 contains

sequence:

mask1

mask2

…

mask100

masks are PNG+alpha

For every subsequent image, Batch must run Action, and import PNG mask with next subsequent index.

Then complete Action, save processed image in folder 3, and close document.

Then open next image, and repeat the process.