Script to Save images in alternate folder before running an action

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,tru e);

 

 

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);