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app.js
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app.js
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'use strict';
var express = require('express');
var timeout = require('connect-timeout');
var path = require('path');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var AV = require('leanengine');
// 加载云函数定义,你可以将云函数拆分到多个文件方便管理,但需要在主文件中加载它们
require('./cloud');
var app = express();
// 设置模板引擎
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(express.static('public'));
// 设置默认超时时间
app.use(timeout('15s'));
// 加载云引擎中间件
app.use(AV.express());
app.enable('trust proxy');
// 需要重定向到 HTTPS 可去除下一行的注释。
app.use(AV.Cloud.HttpsRedirect());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(AV.Cloud.CookieSession({ secret: 'my secret', maxAge: 3600000, fetchUser: true }));
app.get('/', function(req, res) {
if (req.currentUser) {
res.redirect('/comments');
} else {
res.render('index');
}
});
// 可以将一类的路由单独保存在一个文件中
app.use('/comments', require('./routes/comments'));
app.use('/sign-up', require('./routes/sign-up'));
// 处理登录请求(可能来自登录界面中的表单)
app.post('/login', function (req, res) {
AV.User.logIn(req.body.username, req.body.password).then(function (user) {
let adminMail = process.env.BLOGGER_EMAIL || process.env.SMTP_USER;
if (user.get('email') === adminMail) {
res.saveCurrentUser(user); // 保存当前用户到 Cookie
res.redirect('/comments');
}
else {
res.redirect('/');
}
}, function (error) {
//登录失败,跳转到登录页面
res.redirect('/');
});
});
// 登出账号
app.get('/logout', function(req, res) {
req.currentUser.logOut();
res.clearCurrentUser(); // 从 Cookie 中删除用户
res.redirect('/');
});
app.use(function(req, res, next) {
// 如果任何一个路由都没有返回响应,则抛出一个 404 异常给后续的异常处理器
if (!res.headersSent) {
var err = new Error('Not Found');
err.status = 404;
next(err);
}
});
// error handlers
app.use(function(err, req, res, next) {
if (req.timedout && req.headers.upgrade === 'websocket') {
// 忽略 websocket 的超时
return;
}
var statusCode = err.status || 500;
if (statusCode === 500) {
console.error(err.stack || err);
}
if (req.timedout) {
console.error('请求超时: url=%s, timeout=%d, 请确认方法执行耗时很长,或没有正确的 response 回调。', req.originalUrl, err.timeout);
}
res.status(statusCode);
// 默认不输出异常详情
var error = {};
if (app.get('env') === 'development') {
// 如果是开发环境,则将异常堆栈输出到页面,方便开发调试
error = err;
}
res.render('error', {
message: err.message,
error: error
});
});
app.locals.dateFormat = function (date) {
var vDay = padWithZeros(date.getDate(), 2);
var vMonth = padWithZeros(date.getMonth() + 1, 2);
var vYear = padWithZeros(date.getFullYear(), 2);
var vHour = padWithZeros(date.getHours(), 2);
var vMinute = padWithZeros(date.getMinutes(), 2);
var vSecond = padWithZeros(date.getSeconds(), 2);
// return `${vYear}-${vMonth}-${vDay}`;
return `${vYear}-${vMonth}-${vDay} ${vHour}:${vMinute}:${vSecond}`;
};
const padWithZeros = (vNumber, width) => {
var numAsString = vNumber.toString();
while (numAsString.length < width) {
numAsString = '0' + numAsString;
}
return numAsString;
};
module.exports = app;