var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var articleRouter = require('./routes/article')
/* session */
var session = require('express-session')
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

/* 配置session */
app.use(session({
	secret: 'qf project',
	resave: false,
	saveUninitialized: true,
	cookie: { maxAge: 1000 * 60 * 10 }   // 指定登录会话的有效时长
}))
/* 拦截登陆状态 */
app.get('*', (req, res, next) => {
	let username = req.session.username;
	let path = req.path;
	console.log("session-" + username);
	if (path != '/login' && path != '/regist') {
		if (!username)
			res.redirect('/login');
	}
	next();
})

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/article', articleRouter);
// catch 404 and forward to error handler
app.use(function (req, res, next) {
	next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
	// set locals, only providing error in development
	res.locals.message = err.message;
	res.locals.error = req.app.get('env') === 'development' ? err : {};

	// render the error page
	res.status(err.status || 500);
	res.render('error');
});

module.exports = app;