var express = require('express');
 var cookieParser = require('cookie-parser');
 var bodyParser = require('body-parser');
 var session = require('express-session');
 var swig = require('swig');
 var user = require('./modules/user');
 var app = express();
 
 
 
 //设置swig模板方法;
 app.engine('html', swig.renderFile);
 app.set('view engine', 'html');
 app.set('views', __dirname + '/views');
 
 //console.log(user)
 app.use(session({
   secret: 'hubwiz app', //secret的值建议使用随机字符串
   saveUninitialized: true,
   //此处的cookie设置需要注意;
   cookie: {
     secure: false
   } // 过期时间（毫秒）
 }));
 app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({ extended: true }));
 app.use(cookieParser());
 
 
 //引入插件并配置;
 
 var passport = require('passport')
   , LocalStrategy = require('passport-local').Strategy;
 
 
 app.use(passport.initialize());
 app.use(passport.session());
 passport.use('local', new LocalStrategy(
   function (username, password, done) {
     var user = {
       id: '1',
       username: '123',
       password: '123'
     };
 
     if (username !== user.username) {
       return done(null, false, { message: 'Incorrect username.' });
     }
     if (password !== user.password) {
       return done(null, false, { message: 'Incorrect password.' });
     }
     //验证成功后,传入后面的流程；
     return done(null, user);
   }
 ));
 
 passport.serializeUser(function (user, done) {
   //此处设置session中保存用户的信息,这里保存ID；
   done(null, user.id);
 });
 
 passport.deserializeUser(function (user, done) {
   done(null, user);
 });
 
 app.get('/users',function(req,res){
   res.send("ok");
 });
 
 app.get('/',function(req,res){
   res.send("fail");
 });
 
 
 app.get('/login', function (req, res) {
   res.render('index', {title: 'index'});
 });
 
 
 //登录入口验证;前面配置的数据处理流,在这里传入验证函数里面；用户信息会保存在session里，并标记登录状态;
 app.post('/login', passport.authenticate('local', {
     successRedirect: '/users',
     failureRedirect: '/'
   }),function(req,res){
   console.log(req.body);
 });
 
 
 app.get('/logout', function (req, res) {
   req.logout();
   res.redirect('/');
 });
 
 //登录验证函数;通过此函数验证用户是否登录;
 function isLoggedIn(req, res, next) {
   if (req.isAuthenticated())
     return next();
   console.log(req.session);
   res.send("未登录");
 }
 
 
 app.get("/app",isLoggedIn,function(req,res){
   console.log(req.session);
   res.send("登录app");
 });
 
 
 app.listen(8080);