smartfacecloud-emulator-dispatcher/src/file/FilePackager.js

Handles Emulator Dispatcher Part of SmartfaceCloud

const fs = require('fs');
const async = require('async');
const Zipper = require('./Zipper');
const DescriptorFile = require('./DescriptorFile');
const LogToConsole = require('../common/LogToConsole');

function FilePackager() {
	var zipper = new Zipper();
	var descriptor = new DescriptorFile();
	var log = new LogToConsole(true, '[FILE]').log;
	var fileMap = {};

	this.addFile = function(fullPath, fileName, fileNameWithType) {
		fileMap[fullPath] = {
			fileName: fileName,
			fileNameWithType: fileNameWithType
		};
	};

	this.finalize = function(callback) {
		var queue = async.queue(function(fullPath, cb) {
			var fileName = fileMap[fullPath].fileName;
			fs.readFile(fullPath, function(err, data) {
				if (err) {
					log("**ERROR** Couldn't add file", fullPath);
				}
				else {
					descriptor.add(fileName, fileMap[fullPath].fileNameWithType);
					zipper.add(fileName, data);
				}
				cb();
			});
		}, 20);

		queue.drain = function() {
			zipper.add(descriptor.FILE_NAME, descriptor.toString());
			zipper.createZip().then(callback.bind(null, null), callback);
		};

		queue.push(Object.keys(fileMap));
	};

	this.destroy = function() {
		zipper.zip = null;
		zipper = null;
		descriptor = null;
		log = null;
		fileMap = null;
	};
}

module.exports = FilePackager;