spas/lib/config.js

spas is a pragmatic tool for bundling multiple API requests into a single request/response for the end user. spas throttles, caches, parses, filters, concatenates and minifies API responses. It serves them all up in one tidy little package resulting in fe

// ## Dependencies.
var 
   nconf = require('nconf')
   , fs = require('fs')
;

var config
	, configFile = process.cwd() + '/config.json'
	, packageFile = process.cwd() + '/package.json';
	
// Tell nconf to process command line arguments
nconf.argv();

var addDefaultConfig = function() {
	
	var defaultConfig = {
		"development": { 
			"url": "http://localhost:3000", 
			"port": 3000, 
			"redis": { 
				"port": 6379, 
				"address": "localhost" 
			} 
		},
		"live": { 
			"url": "http://localhost", 
			"port": 80, 
			"redis": { 
				"port": 6379, 
				"address": "localhost" 
			} 
		}
	}
	defaultConfig = JSON.stringify(defaultConfig, null, '\t');
	fs.writeFileSync(configFile, defaultConfig);
}

var addPackageJson = function() {
	var myPackage = {
		"description": "spas instance",
		"version": "0.0.0",
		"private": true,
		"dependencies": {
			"spas-http": "0.1.x",
			"spas-youtube": "0.1.x",
			"spas-flickr": "0.1.x",
			"spas-smugmug": "0.1.x",
			"underscore": "1.x.x"
		}
	}
	myPackage = JSON.stringify(myPackage, null, '\t');
	fs.writeFileSync(packageFile, myPackage);
}

// If --create was passed in the commandline, create config.json and package.json
if ( nconf.get ('create')) {
	// Find our config and package files and make sure they exist
	if ( fs.existsSync(packageFile) === false ) addPackageJson();
	if ( fs.existsSync(configFile) === false ) addDefaultConfig();
}

// Use nconf to grab commandline params and read config.json
nconf.file({ file: configFile });

// If --dev is passed use the development config section
config = (nconf.get('dev') ? nconf.get('development') : nconf.get('live'));

// Grab the commandline arguments and put them into config.args
config.args = {
	'dev': nconf.get('dev') ? true : null,
	'create': nconf.get('create') ? true : null,
	'log': typeof nconf.get('log') === 'undefined' ? 'event' : nconf.get('log'),
	'service': nconf.get('service') ? true : false,
	'spawned': nconf.get('spawned') ? true : false
};

// We use this object to store various unique objects. For example, we store
// the value inserted into the users cookie when authenticating against an 
// oauth provider, so we know what bundle part they are authenticating
config.guids = {};

// If spas.js exists in the CWD, then this is probably a local install
config.isLocal = fs.existsSync(process.cwd() + '/spas.js');

GLOBAL.config = config;

exports.nconf = nconf;