Script to Save images in alternate folder before running an action

Question

New to scripting here, and need some help....
I need to do the following:
1) copy original images from a specific folder (customerid\Raw_Images) and save them to an alternate folder (customerid\Raw_Images_Original)
2) Run a particular action in photoshop to enhance the images
3) Overwrite the image in Raw_Images with the newly enhanced one.
4) Save a thumbnail 400px wide in a folder (customerid\Thumbnails)
5) Prompt the user that the customer's images have been enhanced.
Any help would be appreciated.
I have done similar projects before but cannot seem to successfully combine all of my past experience to get this off the ground.
Thanks in advance!
I have this code already below, but how do I now set it up to prompt my user to select a customer folder to run it on?
// makes backup of image and applies enhancements to orig and thumbs
// be advised: this  overwrites existing jpgs of the same name without prompting.
#target photoshop;
if (app.documents.length > 0) {}
var thedoc = app.activeDocument;
// getting the name and location;
var docName = thedoc.name;
if (docName.indexOf(".") != -1) {var basename = docName.match(/(.*)\.[^\.]+$/)[1]}
else {var basename = docName};
// getting the location, if unsaved save to desktop;
try {var docPath = thedoc.path}
catch (e) {var docPath = "~/Desktop"};
// jpg options;
var jpegOptions = new JPEGSaveOptions();
jpegOptions.quality = 9;
jpegOptions.embedColorProfile = true;
jpegOptions.matte = MatteType.NONE;
//save jpg as a copy into Raw Images Orig Folder:
thedoc.saveAs((new File(docPath+'/../'+'/Raw_Images_Original/'+docName)),jpegOptions,true);
doAction("Sketch","Spring 2014");
thedoc.saveAs((new File(docPath+'/../'+'/Raw_Images/'+docName)),jpegOptions,true);
//save thumnail:
thedoc.resizeImage(UnitValue(400, "px"), undefined, 300, ResampleMethod.BICUBIC);
thedoc.saveAs((new File(docPath+'/../'+'/Thumbnails/'+docName)),jpegOptions,true);
//close the Document
app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);

Answer 1

You just add your code inside the loop, after the copy line.  You can use ScriptListener to record playing an action and then just put in new names of the actions if there are more than one, like:
for(var i=0;i<theFiles.length;i++){
theFiles[i].copy('~/desktop/' + docName); //or whatever path you want
playMyAction(actionName,actionSet)
function playMyAction(name,set){  //subsitute name & set for names of action and set used to record action
//ScriptListener code here to play action....