// Copyright 2007
// Written by Jeffrey Tranberry
// Photoshop for Geeks Version 1.0

/* 
Description:
This script demonstates how to batch process
a folder of images using the crop and straighten command
*/

// enable double clicking from the 
// Macintosh Finder or the Windows Explorer
#target photoshop

// Make Photoshop the frontmost application
// in case we double clicked the file
app.bringToFront();

///////////////////////////
//       SET-UP          //
///////////////////////////


// A list of file extensions to skip, keep them lower case

	gFilesToSkip = Array( "db", "xmp", "thm", "txt", "doc", "md0", "tb0", "adobebridgedb", "adobebridgedbt", "bc", "bct" );


///////////////////////////
//         MAIN          //
///////////////////////////

	main();
	
///////////////////////////
//       FUNCTIONS       //
///////////////////////////

function main(){

	// Because we are doing a for loop later in the script that processes all open documents
	// We don't want to have any documents open that we don't want accidentally processed
	// Warn the user if they have an open document and exit the script with return
	if (documents.length > 0){
		alert ("This script requires that there are no open documents to run.");
	return;
	}
	
	// Pops open a dialog for the user to choose the folder of documents to process

	var inputFolder = Folder.selectDialog("Select a folder of documents to process");

	// Pops open a dialog for the user to set the output folder

	var outputFolder = Folder.selectDialog("Select a folder for the output files");
	
	// Open and process a folder of Images
	
	OpenFolder(outputFolder, inputFolder);
	
}

// Given the a Folder of files, open the files and process them

function OpenFolder(outputFolder, inputFolder) {
	
        var filesOpened = 0;
        var fileList = inputFolder.getFiles();
        for ( var i = 0; i < fileList.length; i++ ) {
				// Make sure all the files in the folder are compatible with PS
				if ( fileList[i] instanceof File && ! fileList[i].hidden && ! IsFileOneOfThese( fileList[i], gFilesToSkip )) {
					open( fileList[i] );
					filesOpened++;
				
				// Store the name of the parent document we're going to crop and straighten from
				var docRef = activeDocument;

				// Process the document, which will rusult in more than one open document
				cropAndStraighten();
				
				// Close the parent document without saving
				docRef.close(SaveOptions.DONOTSAVECHANGES);
				
				// Assume the rest of the open documents are the images extracted from the parent document
				// Process each one in turn until there are no more docmuents.			
				while (app.documents.length >=1){
				
				// Flatten the document in case the file type we want to save to requires a flat doc
				app.activeDocument.flatten();
				
				// Save the document as a JPEG to the folder the user specified
				saveJPG(outputFolder);
				
				// Close the document because it was saved in the step before
				fileClose(SaveOptions.DONOTSAVECHANGES);
				
				}

				

				}
        }
        // There are no more documents to open so exit the script
        return filesOpened;
}


// given a file name and a list of extensions
// determine if this file is in the list of extensions

function IsFileOneOfThese( inFileName, inArrayOfFileExtensions ) {
	var lastDot = inFileName.toString().lastIndexOf( "." );
	if ( lastDot == -1 ) {
		return false;
	}
	var strLength = inFileName.toString().length;
	var extension = inFileName.toString().substr( lastDot + 1, strLength - lastDot );
	extension = extension.toLowerCase();
	for (var i = 0; i < inArrayOfFileExtensions.length; i++ ) {
		if ( extension == inArrayOfFileExtensions[i] ) {
			return true;
		}
	}
	return false;
}


// fileClose function for closing current document

function fileClose(options) {
	
		app.activeDocument.close(options);
}

// Crop and Straighten

function cropAndStraighten(){
var id333 = stringIDToTypeID( "CropPhotosAuto0001" );
executeAction( id333, undefined, DialogModes.NO );
}

// Save JPG

function saveJPG(filePath){
var id43 = charIDToTypeID( "save" );
    var desc11 = new ActionDescriptor();
    var id44 = charIDToTypeID( "As  " );
        var desc12 = new ActionDescriptor();
        var id45 = charIDToTypeID( "EQlt" );
        desc12.putInteger( id45, 10 );
        var id46 = charIDToTypeID( "MttC" );
        var id47 = charIDToTypeID( "MttC" );
        var id48 = charIDToTypeID( "None" );
        desc12.putEnumerated( id46, id47, id48 );
    var id49 = charIDToTypeID( "JPEG" );
    desc11.putObject( id44, id49, desc12 );
    var id50 = charIDToTypeID( "In  " );
    desc11.putPath( id50, new File( filePath ) );
    var id51 = charIDToTypeID( "LwCs" );
    desc11.putBoolean( id51, true );
executeAction( id43, desc11, DialogModes.NO );
}