added image grabber.

i also add dummy file within movie's image directory so that directory could be added into git

grab-image.js

@@ -0,0 +1,82 @@
+var fs = require('fs'),
+		path = require('path'),
+		request = require('request'),
+		qs = require('qs');
+
+
+/**
+ * example: http://m.21cineplex.com/image_preview.php?type=movie&images=12AVES.jpg&width=100&height=147
+ * extract width, height, and file extension
+ */
+function extractImageInformation(url) {
+	var image = {
+		width: 0, 
+		height: 0, 
+		ext: 'jpg'
+	};
+
+	var params = qs.parse(url);
+
+	try {
+		image.width = parseInt(params.width);
+		image.height = parseInt(params.height);
+		image.ext = params.images.toLowerCase().match(/\.(?:jpg|jpeg|png)/)[0];
+	} catch (e) {
+		console.log(e.stack);
+	}
+
+	return image;
+}
+
+/**
+ * @param object movie movie detail (movie id is mandatory)
+ * @param object image image detail (resolution, name, extension)
+ */
+function storeMovieImage(movie) {
+	var createFile = false;
+
+	// create path
+	var file_path = ['images', 'movie', movie.id].join('/');
+
+	fs.mkdir(file_path, 0755, function(err){
+		console.log('create direktori. path: ' + file_path);
+
+		if (err) {
+			console.log(err);
+
+			switch (err.code) {
+				case 'EEXIST':
+					console.log('direktori sudah ada');
+					createFile = true;
+					break;
+
+				default:
+					console.log(err.toString());
+					console.log('error on mkdir');
+					break;
+			}
+		} else {
+			createFile = true;
+		}
+
+		if (createFile) {
+			file_path += '/' + [movie.id, image.width, image.height].join('_') + '.' + image.ext;
+			console.log('create file. path: ', file_path);
+
+			path.exists(file_path, function(exists){
+				if (!exists) {
+					console.log('file created.');
+					request(movie.url).pipe(fs.createWriteStream(path, {mode: 0755}));
+				} else {
+					console.log('file already exist.');
+				}
+			});
+		}
+	});
+}
+module.exports = storeMovieImage;
+
+
+console.log(extractImageInformation(movie.url));
+
+storeMovieImage(movie);