server.js

require('dotenv').config();
const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');
const session = require('express-session');
const passport = require('passport');
const cors = require('cors');
const flash = require('connect-flash');
const path = require('path');
const MemoryStore = require('memorystore')(session);

const productRoutes = require('./routes/productRoutes');
const authRoutes = require('./routes/authRoutes');
const adminStatsRoutes = require('./routes/adminStatsRoutes');
require('./config/passportSetup');

const app = express();

const isProduction = process.env.NODE_ENV === 'production';

// Set up middleware
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.use(
  cors({
    credentials: true,
    origin: isProduction ? 'https://darkdrip.herokuapp.com/' : 'http://localhost:3000',
  })
);
app.use(
  session({
    secret: process.env.SESSION_SECRET,
    resave: false,
    saveUninitialized: false,
    proxy: isProduction,
    store: new MemoryStore({
      checkPeriod: 10 * 60 * 1000,
    }),
    cookie: {
      maxAge: 30 * 24 * 60 * 60 * 1000,
      httpOnly: false,
      secure: isProduction,
    },
  })
);
app.use(passport.initialize());
app.use(passport.session());
app.use(flash());

// Connect to MongoDB Atlas
mongoose.connect(process.env.MONGO_URI, {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  useCreateIndex: true,
  autoIndex: true,
  useFindAndModify: false,
});
mongoose.connection.once('open', () => console.log('Connected to MongoDB'));

// Connect to API endpoints
app.use('/products', productRoutes);
app.use('/auth', authRoutes);
app.use('/admin', adminStatsRoutes);

// Serve static files when in production
if (isProduction) {
  app.use(express.static('frontend/build'));

  app.get('*', (req, res) => {
    res.sendFile(path.resolve(__dirname, 'frontend', 'build', 'index.html'));
  });
}

const PORT = process.env.PORT || 5000;
app.listen(PORT, () => {
  console.log('Server running on port ' + PORT);
});