Subfolders - Test

// Main Code [Execution of script begins here]

// uncomment to suppress Illustrator warning dialogs
// app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;

var destFolder, sourceFolder, files, fileType, sourceDoc, targetFile, pdfSaveOpts;

// Select the source folder.
sourceFolder = Folder.selectDialog( 'Select the folder with Illustrator .ai files you want to convert to PDF');
f = find_files(sourceFolder);

function find_files (dir)
    {
    return find_files_sub (dir, []);
    }

function find_files_sub (dir, array)
    {
    var f = Folder (dir).getFiles ("*.*");
    for (var i = 0; i < f.length; i++)
        {
        if (f[i] instanceof Folder)
            find_files_sub (f[i], array);
        else
            if (f[i].name.slice (-3).toLowerCase() == ".ai")
                array.push (f[i]);
        }

            // If a valid folder is selected
        if ( sourceFolder != null )
        {
            f = new Array();
            fileType = "*.ai"; //prompt( 'Select type of Illustrator files to you want to process. Eg: *.ai', ' ' );

            // Get all files matching the pattern
            f = sourceFolder.getFiles( fileType );

            if ( f.length > 0 )
            {
                // Get the destination to save the files
                //destFolder = Folder.selectDialog( 'Select the folder where you want to save the converted PDF files.', '~' );
                destFolder = sourceFolder;
                for ( i = 0; i < f.length; i++ )
                {
                    sourceDoc = app.open(f[i]); // returns the document object

                    // Call function getNewName to get the name and file to save the pdf
                    targetFile = getNewName();

                    // Call function getPDFOptions get the PDFSaveOptions for the files
                    pdfSaveOpts = getPDFOptions( );

                    // Save as pdf
                    sourceDoc.saveAs( targetFile, pdfSaveOpts );

                    sourceDoc.close();
                }
                alert( 'Files are saved as PDF in ' + destFolder );
            }
            else
            {
                alert( 'No matching files found' );
            }
        }

    return array;
    }



/*********************************************************

getNewName: Function to get the new file name. The primary
name is the same as the source file.

**********************************************************/

function getNewName()
{
    var ext, docName, newName, saveInFile, docName;
    docName = sourceDoc.name;
    ext = '.pdf'; // new extension for pdf file
    newName = "";

    for ( var i = 0 ; docName[i] != "." ; i++ )
    {
        newName += docName[i];
    }
    newName += ext; // full pdf name of the file

    // Create a file object to save the pdf
    saveInFile = new File( destFolder + '/' + newName );

    return saveInFile;
}

/*********************************************************

getPDFOptions: Function to set the PDF saving options of the
files using the PDFSaveOptions object.

**********************************************************/

function getPDFOptions()
{
    // Create the PDFSaveOptions object to set the PDF options
    var pdfSaveOpts = new PDFSaveOptions();

    // Setting PDFSaveOptions properties. Please see the JavaScript Reference
    // for a description of these properties.
    // Add more properties here if you like
    pdfSaveOpts.acrobatLayers = true;
    pdfSaveOpts.colorBars = false;
    pdfSaveOpts.colorCompression = CompressionQuality.AUTOMATICJPEGHIGH;
    pdfSaveOpts.compressArt = true; //default
    pdfSaveOpts.embedICCProfile = true;
    pdfSaveOpts.enablePlainText = true;
    pdfSaveOpts.generateThumbnails = true; // default
    pdfSaveOpts.optimization = true;
    pdfSaveOpts.pageInformation = false;
    pdfSaveOpts.preserveEditability = true;

    return pdfSaveOpts;
}