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app.js
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app.js
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// Libraries
const path = require('path');
const express = require('express');
const bodyParser = require('body-parser');
const dotenv = require('dotenv');
const mongoose = require('mongoose');
const session = require('express-session');
const MongoDBStore = require('connect-mongodb-session')(session);
const csrf = require('csurf');
const flash = require('connect-flash');
const multer = require('multer');
// Routes
const adminRoutes = require('./routes/admin');
const shopRoutes = require('./routes/shop');
const authRoutes = require('./routes/auth');
// Controllers
const errorController = require('./controllers/error');
// Models
const User = require('./models/user');
dotenv.config();
const app = express();
const store = new MongoDBStore({
uri: process.env.MONGODB_CONNECTION_STRING,
collection: 'sessions',
});
const csrfProtection = csrf();
app.set('view engine', 'ejs');
app.set('views', 'views');
app.use(bodyParser.urlencoded({ extended: false }));
const fileStorage = multer.diskStorage({
destination: (req, file, cb) => {
const error = null;
cb(error, 'images');
},
filename: (req, { originalname }, cb) => {
const error = null;
cb(error, `${new Date().toISOString()}-${originalname}`);
},
});
const fileFilter = (req, { mimetype }, cb) => {
// only accept png & jpg image files
if (['image/png', 'image/jpg', 'image/jpeg'].includes(mimetype)) {
cb(null, true);
} else {
cb(null, false);
}
};
// handle file data from request
// save file to images directory
app.use(
multer({ dest: 'images', storage: fileStorage, fileFilter }).single('image')
);
// handle static routes
app.use(express.static(path.join(__dirname, 'public')));
app.use('/images', express.static(path.join(__dirname, 'images')));
// initialize session
app.use(
session({
secret: 'my secret',
resave: false,
saveUninitialized: false,
store: store,
})
);
app.use(csrfProtection);
app.use(flash());
app.use((req, res, next) => {
res.locals.isAuthenticated = req.session.isLoggedIn;
res.locals.csrfToken = req.csrfToken();
next();
});
app.use((req, res, next) => {
// Throwing new error on sync task
// will be handled on our error handling middleware
// throw new Error('Sync Error');
if (!req.session.user) {
return next();
}
User.findById(req.session.user._id)
.then((user) => {
if (!user) {
return next();
}
req.user = user;
next();
})
.catch((err) => {
console.log(err);
// throw new Error will not work for async task
// throw new Error(err);
// the Error should be passed inside next()
// for our error handling middleware to handle it
next(new Error(err));
});
});
app.use('/admin', adminRoutes);
app.use(shopRoutes);
app.use(authRoutes);
app.use('/500', errorController.get500);
app.use(errorController.get404);
// express error handling middleware
app.use((error, req, res, next) => {
// res.redirect('/500');
if (error) {
console.error('error::', error);
res.status(500).render('500', {
pageTitle: 'Error!',
path: '/500',
isAuthenticated: req.session.isLoggedIn,
});
}
});
mongoose
.connect(process.env.MONGODB_CONNECTION_STRING)
.then((result) => {
app.listen(3000);
})
.catch((err) => {
console.log(err);
});