app.js

const express = require('express');
const path = require('path');
const cors = require('cors')
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const passport = require("passport")
const LocalStrategy = require("passport-local")
const passportJWT = require("passport-jwt")

const PORT = process.env.PORT || 4000;

const JWTStrategy = passportJWT.Strategy

const apiRouter = require('./routes/api');

const app = express();
app.use(passport.initialize())
app.use(cors())

const user = {
  id: "1",
  email: "example@email.com",
  password: "password"
}

passport.use(new LocalStrategy({
  usernameField: "email"
}, (email, password, done) => {
  if(email === user.email && password === user.password) {
    return done(null, user)
  }else {
    return done(null, false)
  }
}))

passport.use(new JWTStrategy({
  jwtFromRequest: passportJWT.ExtractJwt.fromAuthHeaderAsBearerToken(),
  secretOrKey: "jwt_secret"
}, (jwt_payload, done) => {
  if(user.id === jwt_payload.user._id){
    return done(null, user)
  } else {
    return done(null, false, {
      message: "Token not matched"
    })
  }
}))

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use(express.static(path.join(__dirname, "client/build")))

app.use('/api', apiRouter);

app.get("*", (req, res) => {
  return res.sendFile(path.join(__dirname, "/client/build/index.html"))
})

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.send(err.message);
});

app.listen(PORT, () => console.log(`The server is running on port ${PORT}`))