app.js

const path = require('path');
const fs = require('fs');
const https  = require('https');
const express = require('express');
const bodyParser = require('body-parser');
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');
const helmet = require('helmet');
const compression = require('compression');
const morgan = require('morgan');

require('dotenv').config();

const errorController = require('./controllers/error');
const User = require('./models/user');

const MONGODB_URI = `mongodb+srv://${process.env.MONGO_USER}:${process.env.MONGO_PASSWORD}@cluster0.mnxfnkh.mongodb.net/?retryWrites=true&w=majority&appName=Cluster0`;
const app = express();
const store = new MongoDBStore({
  uri: MONGODB_URI,
  collection: 'sessions'
});
const csrfProtection = csrf();

// const privateKey = fs.readFileSync('server.Key');
// const certificate = fs.readFileSync('server.cert');

const fileStorage = multer.diskStorage({
  destination: (req,file,cb)=>{
    cb(null,'images');
  },
  fileName: (req,file,cb)=>{
    cb(null, new Date().toISOString() + "-" + file.originalname);
  }
})

const fileFilter = (req,file,cb)=>{
  if(file.mimetype === 'image/png' || 
    file.mimetype ==='image/jpg' || file.mimetype ==='image/jpeg'){
    cb(null,true);
  }else{
    cb(null,false);
  }
  
  

}

app.set('view engine', 'ejs');
app.set('views', 'views');

const adminRoutes = require('./routes/admin');
const shopRoutes = require('./routes/shop');
const authRoutes = require('./routes/auth');


const accessLogStream = fs.createWriteStream(
  path.join(__dirname,'access.log'),
  {flags:'a'}
);
app.use(helmet());
app.use(compression());
app.use(morgan('combined',{stream:accessLogStream}));

app.use(bodyParser.urlencoded({ extended: false }));
app.use(multer({storage:fileStorage,fileFilter: fileFilter}).single('image'));
app.use(express.static(path.join(__dirname, 'public')));
app.use('/images',express.static(path.join(__dirname, 'images')));
app.use(
  session({
     secret:'my secret',
     resave: false,
     saveUninitialized:false,
     store: store})
);
app.use(csrfProtection);
app.use(flash());

app.use((req,res,next)=>{
  if(!req.session.user){
    next();
  }else{
    User.findById(req.session.user._id)
      .then(user => {
        if(!user){
          return next();
        }
        req.user = user;
        next();
      }).catch(err=>{throw new Error(err)});

  }
})
app.use((req,res,next)=>{
  res.locals.isAuthenticated= req.session.isLoggedIn
  res.locals.csrfToken= req.csrfToken();
  next();
})
//
app.use('/admin', adminRoutes);
app.use(shopRoutes);
app.use(authRoutes);
app.get('/500',errorController.get500);
app.use(errorController.get404);

mongoose
  .connect(
    MONGODB_URI,
    { useNewUrlParser: true, useUnifiedTopology: true, ssl: true }
  )

  .then(result => { 
    // https.createServer({key:privateKey,cert:certificate},app)
    // .listen(process.env.PORT||3000);
    app.listen(process.env.PORT||3000);
    console.log("connected");
  })
  .catch(err => {
    console.log(err);
  });