Refactoring server application service to enable modularity and callbacks, as well as provide app, db, config variables outside of server.js

Author: lirantal

config/lib/app.js

@@ -0,0 +1,52 @@
+'use strict';
+
+/**
+ * Module dependencies.
+ */
+var config = require('../config'),
+	mongoose = require('./mongoose'),
+	express = require('./express'),
+	chalk = require('chalk');
+
+// Initialize Models
+mongoose.loadModels();
+
+module.exports.loadModels = function loadModels() {
+	mongoose.loadModels();
+};
+
+module.exports.init = function init(callback) {
+
+	mongoose.connect(function (db) {
+		// Initialize express
+		var app = express.init(db);
+		if (callback) callback(app, db, config);
+
+	});
+};
+
+module.exports.start = function start(callback) {
+	var _this = this;
+
+	_this.init(function(app, db, config) {
+
+		// Start the app by listening on <port>
+		app.listen(config.port, function() {
+
+			// Logging initialization
+			console.log('--');
+			console.log(chalk.green(config.app.title));
+			console.log(chalk.green('Environment:\t\t\t' + process.env.NODE_ENV));
+			console.log(chalk.green('Port:\t\t\t\t' + config.port));
+			console.log(chalk.green('Database:\t\t\t\t' + config.db.uri));
+			if (process.env.NODE_ENV === 'secure') {
+				console.log(chalk.green('HTTPs:\t\t\t\ton'));
+			}
+			console.log('--');
+
+			if (callback) callback(app, db, config);
+		});
+
+	});
+
+};

config/lib/mongoose.js

@@ -30,9 +30,6 @@ module.exports.connect = function(cb) {
 			// Enabling mongoose debug mode if required
 			mongoose.set('debug', config.db.debug);
 
-			// Load modules
-			_this.loadModels();
-
 			// Call callback FN
 			if (cb) cb(db);
 		}

gruntfile.js

@@ -234,17 +234,30 @@ module.exports = function (grunt) {
 		});
 	});
 
+	grunt.task.registerTask('server', 'Starting the server', function() {
+		// Get the callback
+		var done = this.async();
+
+		var path = require('path');
+		var app = require(path.resolve('./config/lib/app'));
+		var server = app.start(function() {
+			done();
+		});
+
+	});
+
+
+
 	// Lint CSS and JavaScript files.
 	grunt.registerTask('lint', ['sass', 'less', 'jshint', 'csslint']);
 
 	// Lint project files and minify them into two production files.
 	grunt.registerTask('build', ['env:dev', 'lint', 'ngAnnotate', 'uglify', 'cssmin']);
 
 	// Run the project tests
-	grunt.registerTask('test', ['env:test', 'lint', 'mkdir:upload', 'copy:localConfig', 'mongoose', 'mochaTest', 'karma:unit']);
-	grunt.registerTask('test:server', ['env:test', 'lint', 'mongoose', 'mochaTest']);
-	grunt.registerTask('test:client', ['env:test', 'lint', 'mongoose', 'karma:unit']);
-
+	grunt.registerTask('test', ['env:test', 'lint', 'mkdir:upload', 'copy:localConfig', 'server', 'mochaTest', 'karma:unit']);
+	grunt.registerTask('test:server', ['env:test', 'lint', 'server', 'mochaTest']);
+	grunt.registerTask('test:client', ['env:test', 'lint', 'server', 'karma:unit']);
 	// Run the project in development mode
 	grunt.registerTask('default', ['env:dev', 'lint', 'mkdir:upload', 'copy:localConfig', 'concurrent:default']);
 

server.js

@@ -3,32 +3,5 @@
 /**
  * Module dependencies.
  */
-var config = require('./config/config'),
-	mongoose = require('./config/lib/mongoose'),
-	express = require('./config/lib/express'),
-	chalk = require('chalk');
-
-/**
- * Main application entry file.
- * Please note that the order of loading is important.
- */
-
-// Initialize mongoose
-mongoose.connect(function (db) {
-	// Initialize express
-	var app = express.init(db);
-
-	// Start the app by listening on <port>
-	app.listen(config.port);
-
-	// Logging initialization
-	console.log('--');
-	console.log(chalk.green(config.app.title));
-	console.log(chalk.green('Environment:\t\t\t' + process.env.NODE_ENV));
-	console.log(chalk.green('Port:\t\t\t\t' + config.port));
-	console.log(chalk.green('Database:\t\t\t\t' + config.db.uri));
-	if (process.env.NODE_ENV === 'secure') {
-		console.log(chalk.green('HTTPs:\t\t\t\ton'));
-	}
-	console.log('--');
-});
+var app = require('./config/lib/app');
+var server = app.start();