app.js

'use strict';

let koa = require('koa'),
	path = require('path'),
	send = require('koa-send'),
	less = require('koa-less'),
	mount = require('koa-mount'),
	koabody = require('koa-body'),
	session = require('koa-session'),
	router = require('koa-router')(),
	log = require('koa-request-log'),
	render = require('koa-ejs'),
	compress = require('koa-compress'),
	conditional = require('koa-conditional-get'),
	etag = require('koa-etag'),
	errors = require('./middleware/error'),
	userSess = require('./middleware/user_sess'),
	app = koa();
	
let publicPath = path.join(__dirname, 'public');
let routes = require('./routers');

// add view render
render(app, {
  root: path.join(__dirname, 'views'),
  cache: false,
  debug: true
});

// for cookie
app.keys = ['keys'];

// 绑定路由地址
app
.use(log())
.use(less('public', {
	dest: publicPath
}))
.use(errors)
.use(session(app))
.use(userSess)
.use(koabody())
.use(conditional())
.use(etag())
.use(compress({threshold: 2048}))
.use(mount(routes))
.use(mount(router.allowedMethods()))
.use(function* (){
	yield send(this, this.path, {
		root: publicPath
	});
});

// listen on port 3000
app.listen(3000);

require('colors');
console.log('nc-example running at http://localhost:3000'.green);
console.log('Node Version: v4.3.0, MongoDB: v3.0.7'.green);
console.log('God bless you ~'.green);