app.js

const path = require('path');
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 flash = require('connect-flash');
const csrf = require('csurf');
const csvtojson = require('csvtojson');
const User = require('./models/user');
const Book = require('./models/book');
const bookGenre = require('./models/book_genre');
const Author = require('./models/author');
const Genre = require('./models/genre');

const MONGODB_URI = process.env.MONGODB_URI;
const connectionOptions = {
  dbName: 'book_store',
};

const app = express();
console.log(Date.now().toString());

const store = new MongoDBStore({
  uri: MONGODB_URI,
  collection: 'sessions',
});

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

app.use(bodyParser.urlencoded({ extended: false }));
app.use(express.static(path.join(__dirname, 'public')));
app.use(
  session({
    secret: 'somesupersecret',
    resave: false,
    saveUninitialized: false,
    store: store,
  })
);
app.use(csrf());
app.use(flash());

app.use((req, res, next) => {
  if (req.session.user) {
    User.findById(req.session.user._id)
      .then((user) => {
        req.user = user;
        next();
      })
      .catch((err) => {
        console.log(err);
      });
  } else {
    next();
  }
});

app.use((req, res, next) => {
  res.locals.isAdmin = req.session.isAdmin;
  res.locals.isLoggedIn = req.session.isLoggedIn;
  res.locals.csrfToken = req.csrfToken();
  next();
});

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

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

app.use(shopRoutes);
app.use('/admin', adminRoutes);
app.use(authRoutes);

mongoose
  .connect(MONGODB_URI, connectionOptions)
  .then((result) => {
    app.listen(process.env.PORT || 3000);
    if (MONGODB_URI.slice(0, 9) === 'mongodb:/') {
      Book.find()
        .countDocuments()
        .then((count) => {
          if (count > 0) {
            return;
          }
          csvtojson()
            .fromFile('./dbData/Books.csv')
            .then((csvData) => {
              Book.insertMany(csvData);
            })
            .then(
              csvtojson()
                .fromFile('./dbData/Authors.csv')
                .then((csvData) => {
                  Author.insertMany(csvData);
                })
            )
            .then(
              csvtojson()
                .fromFile('./dbData/BookGenres.csv')
                .then((csvData) => {
                  bookGenre.insertMany(csvData);
                })
            )
            .then(
              csvtojson()
                .fromFile('./dbData/Genres.csv')
                .then((csvData) => {
                  Genre.insertMany(csvData);
                })
            )
            .catch((err) => {
              console.log(err);
            });
        });
    }
    console.log('Started Server #');
  })
  .catch((err) => {
    console.log(err);
  });