'use strict';

var fs = require('fs'),
	path = require('path'),
	async = require('async'),
	im = require('gm').subClass({ imageMagick: true }),
	extensions = ['.jpg', '.jpeg', '.png', '.tif', '.tiff', '.gif'],
	counter = 0;

(function() {
	var originalFiles = path.join(__dirname, './original');
	var compressedFiles = path.join(__dirname, './compressed');
	var items = fs.readdirSync(originalFiles);
	var length = items.length;

	async.eachSeries(items, function(img, cb) {
		if(~extensions.indexOf(path.extname(img).toLowerCase())) {
			counter+=1;
			var id = path.basename(img, path.extname(img));
			var oldFilePath = path.join(originalFiles, img);
			var newFilePath = path.join(compressedFiles, id + '.jpg');

			console.log('Compressing', counter, 'of', length);

			im(oldFilePath)
				.compress('JPEG')
				.quality(90)
				.write(newFilePath, function(err, stdout, stderr, command) {
					cb();
				});
		} else {
			cb();
		}
	});
})();