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app.js
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app.js
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var express = require('express');
var path = require('path');
var favicon = require('static-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var requireDir = require('require-dir');
var expressLayouts = require('express-ejs-layouts');
var session = require('express-session');
var _ = require('lodash-node');
var entidadesBig = require('./models');
var passport = require('passport');
var pwd = require('pwd');
var commonStrings = require('./commonStrings');
var luzAuth = require('./LuzAuth');
var userPermissions = require("./UserPermissions");
var ls = require('list-directory-contents');
var config = require("./config");
var multer = require('multer');
var os = require('os')
var luzUtil = require ('./LuzUtil');
GLOBAL.commonStrings = commonStrings;
GLOBAL.config = config;
GLOBAL._ = _;
GLOBAL.luzUtil = luzUtil;
var serverStartupDate = new Date();
var viewsPath = luzUtil.getAppPath('views/');
ls(viewsPath, function (err, tree) {
var views = {};
for (var i in tree)
{
if (!luzUtil.endsWith(tree[i], "/"))
{
if (os.platform() == 'win32')
{
luzUtil.setProperty(views, tree[i].replace(viewsPath, '').split('.')[0].replace(/\\/g,'.'), true);
}
else
{
luzUtil.setProperty(views, tree[i].replace(viewsPath, '').split('.')[0].replace(new RegExp("/","g"), '.'), true);
}
}
}
global.views = views;
});
/**
* Setup authentication using Passport.
*/
luzAuth(passport);
/**
* Express starting up.
*/
var app = express();
/**
* Internal Express middleware setup
*/
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(favicon("./public/brackets/images/favicon.png"));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
app.use(multer({ dest: './uploads/'}))
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(expressLayouts);
app.use(session({secret: 'logos no node!!'}));
app.use(passport.initialize());
app.use(passport.session());
/**
* Custom middleware setup
*/
/**
* Middleware to add parameters to view rendering.
*/
app.use(function (req, res, next) {
//Grab render function reference
var _render = res.render;
/**
* Gets current page object and continues the common view rendering behavior
*/
luzUtil.getCurrentPage(req, function (currentPage) {
// override view rendering logic
res.render = function (view, options, fn) {
/**
* Checks if:
* - There's a base layout defined for the active template
* - There's not a specific layout already defined
* If both apply, replace default layout with the one from the active template.
*/
var targetTemplate = config.adminTemplate;
if (!options)
{
options = {};
}
if (global.views.templates[targetTemplate].layout && !options.layout)
{
_.merge(options,
{
layout: "templates/" + targetTemplate + "/layout"
});
}
/**
* Checks if this view exists within the active template.
*/
if (luzUtil.getProperty(global.views.templates[targetTemplate], view.replace(/\\/g, '.')))
{
/**
* If it does, replaces the default view with the template one.
*/
view = "templates/" + targetTemplate + "/" + view;
}
_.merge(options,
{
currentPage: currentPage
});
_render.call(this, view, options, fn);
};
next();
});
});
/**
* Builds page objects from pages folder.
* @type {*|map|exports}
*/
var pages = requireDir('./routes', { recurse: true });
global.pages = pages;
var menuItems = [];
setupPages(pages, "/", function (router, extractedPermissions) {
app.use(router);
_.forEach(extractedPermissions, function(newPermission) {
/**
* Ignoring permissions with the same key.
*/
if (_.isUndefined(userPermissions[newPermission.key]))
{
userPermissions[newPermission.key] = newPermission;
}
});
});
buildMenuItems(menuItems, pages, "/");
/**
* Builds all the menu items based on the pages folder.
* @param items The parent menu item reference.
* @param pgs The pages to be processed into menu items.
*/
function buildMenuItems(items, pgs, parentUrl) {
var pages = pgs.admin;
for (var p in pages) {
/**
* Checks if page has a menu item definition.
*/
if (pages[p].hasOwnProperty('menuItem')) {
if (pages[p].menuItem.subItems === true) {
pages[p].menuItem.subItems = [];
}
var itemUrl = parentUrl + (p === 'index' ? '' : p);
pages[p].menuItem.url = itemUrl;
/**
* Recursiveness for menu sub-items.
*/
buildMenuItems(pages[p].menuItem.subItems, pages[p], itemUrl + "/");
items.push(pages[p].menuItem);
}
}
}
/**
* Setups all pages shaping up an Express Router object with its proper routes and controllers based on the pages folder.
* @param pages The pages to be processed.
* @param parentUrl The string reference for the parent route in URL format.
* @param cb The callback function when the setup is done passing out the built router
* @param cb The external router param for recursive calling.
*/
function setupPages(pages, parentUrl, cb, router) {
/**
* If router object is empty, create one.
*/
var userPermissions = [];
if (!router) {
router = express.Router();
}
for (var r in pages) {
/**
* Checks if page has a controller defined, if not, will be treated as a DIRECTORY.
*/
if (pages[r].hasOwnProperty('controller'))
{
var tUrl = parentUrl + (r === 'index' ? '' : r);
for (var m in pages[r].controller) {
//Checks if there's a specific authentication method, if not, use system's default
var userAuthenticationStrategy = pages[r].controller[m].auth ? pages[r].controller[m].auth : luzUtil.checkAuth;
//Checks if there any necessary permissions for accessing this action
if (pages[r].controller[m].necessaryPermissions)
{
//Append new user permissions
userPermissions = userPermissions.concat(pages[r].controller[m].necessaryPermissions);
}
router[m](tUrl, userAuthenticationStrategy, pages[r].controller[m].action)
if (tUrl.lastIndexOf('/') == (tUrl.length - 1) && pages[r].page)
{
router[m](tUrl + 'index', userAuthenticationStrategy, pages[r].controller[m].action)
}
}
}
else {
/**
* Implementing recursive directories and files, ignoring menu item definition files (menuItem.js).
*/
if (r != 'menuItem') {
setupPages(pages[r], parentUrl + r + '/', function (rr, permissions)
{
userPermissions = userPermissions.concat(permissions);
}, router);
}
}
}
/**
* All done, router is ready to roll.
*/
cb(router, userPermissions);
}
/**
* Returns all menu items to the client.
*/
app.use('/api/menuItems', function (req, res) {
//TODO: Filter menu items per user permissions and roles!!
res.send({lastUpdate: serverStartupDate, menuItems: menuItems});
});
/**
* Returns all menu items to the client.
*/
app.use('/api/commonStrings', function (req, res) {
res.send(commonStrings);
});
/**
* Returns all page objects to the client.
*/
app.use('/api/routes', function (req, res) {
//TODO: Filter menu items per user permissions and roles!!
res.send(pages);
});
/**
* catch 404 and forward to error handler
*/
app.use(function (req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
/// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function (err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;