qwebs/lib/loaders/bundle.js

Back-end web server

/*!
 * qwebs
 * Copyright(c) 2015 Benoît Claveau
 * MIT Licensed
 */

 
"use strict";

var fs = require("fs"),
    path = require("path"),
    Asset = require("./../routes/asset"),
    DataError = require("./../dataerror"),
    fs = require("fs"),
    Q = require('q');

function BundleLoader (){
};

BundleLoader.prototype.constructor = BundleLoader;

BundleLoader.prototype.load = function($qwebs) {
    
    if (!$qwebs) throw new DataError({ message: "Qwebs instance is not defined." });
    
    var $config = $qwebs.resolve("$config");
    var $router = $qwebs.resolve("$router");
        
    return Q.try(function() {

        var filepath = $config.bundle;
        if (!filepath) return []

        if (typeof filepath == "string") 
        {
            try {
                filepath = path.resolve($qwebs.root, filepath);
                return Q.ninvoke(fs, "readFile", filepath).then(function(str) {
                    return JSON.parse(str);  
                });
            }
            catch(error) {
                throw new DataError({ message: "Failed to read the bundle file: " + filepath + ". " +  error.message });
            }
        }
        else if (filepath instanceof Object) return filepath;
        else throw new DataError({ message: "Bundle type is not managed." });
        
    }).then(function(bundles) {
        
        var promises = [];
        for (var property in bundles) {
            var files = bundles[property];
            var asset = new Asset($qwebs, $config, property);
            promises.push(asset.initFromFiles(files));
        };
        
        return Q.all(promises);
        
    }).then(function(assets) {
         
        return $router.assets(assets);
        
    });
     
};

exports = module.exports = new BundleLoader();