var version = '1.02';
var allowedFiletypes = ['png', 'gif', 'jpg'];
var separator = '/';
var defaultImageQuality = 90;


fl.outputPanel.clear();
fl.trace('Welcome to the wonderful convert images to swfs script (version ' + version + ')');

// create new project
fl.createDocument();

// shortcuts
var doc = fl.getDocumentDOM();
var library = doc.library;

// set to player 8
doc.setPlayerVersion(8);

// select images to import
var importFolder = fl.browseForFolderURL('Select the folder with images to convert');
var importFolderContents = FLfile.listFolder(importFolder);
var i;

// import files into library
for (i = 0; i < importFolderContents.length; i++)
{
	var file = importFolderContents[i];
	var fileURI = importFolder + separator + file;
	
	if (!isAllowedFiletype(file))
	{
		continue;
	}
	
	fl.trace('Importing ' + filenameFromURI(fileURI) + ' ...');
	doc.importFile(fileURI, true);
}

// choose export folder
var exportFolder = fl.browseForFolderURL('Select the folder to which you want to export the images to');

// choose image quality
var imageQuality = prompt('Please choose image quality', '90');
if (imageQuality == null)
{
	imageQuality = defaultImageQuality;
}
else
{
	imageQuality = parseInt(imageQuality);
	imageQuality = Math.max(0, imageQuality);
	imageQuality = Math.min(100, imageQuality);
}

var items = library.items.concat();
var mcsFolder = 'converted_movieclips';
i = items.length;

// convert all images to movieclips and export them
while (i--)
{
	var item = items[i];
	if (item.itemType == 'bitmap')
	{
		// set image quality
		item.quality = imageQuality;
		
		var imageName = item.name.split('.')[0];
		var mcName = mcsFolder + '/' + imageName + '_mc';
		
		// create movieclip in library
		library.addNewItem('movie clip', mcName);
		// edit movieclip
		library.editItem(mcName);
		// attach image
		doc.addItem({x:0.0, y:0.0}, item);
		
		// get reference on mc
		var mc = library.items[library.findItemIndex(mcName)];
		// get reference on attached image
		var image = doc.getTimeline().layers[0].frames[0].elements[0];
		// we need to reposition the image, otherwise it will be centered
		image.x = 0;
		image.y = 0;
				
		var exportPath = exportFolder + '/' + imageName + '.swf';
		fl.trace('Exporting ' + filenameFromURI(exportPath) + ' ...');
		mc.exportSWF(exportPath);
	}
}








/*
* Helper methods
*/

function isAllowedFiletype(file)
{
	var suffix = suffixForFile(file).toLowerCase();
	var i = allowedFiletypes.length;
	while (i--)
	{
		if (allowedFiletypes[i] == suffix)
		{
			return true;
		}
	}
	return false;
}

function filenameFromURI(uri)
{
	var parts = uri.split(separator);
	return parts.pop();
}

function suffixForFile(file)
{
	var parts = file.split('.');
	return parts[parts.length - 1];
}