app.js

if (process.env.NODE_ENV !== 'production') {
  require('dotenv').config();
}

var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

const session = require("express-session");
const passport = require("passport");
const LocalStrategy = require("passport-local").Strategy;
const bcrypt = require("bcryptjs");

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

var indexRouter = require('./routes/index');
var userRouter = require('./routes/user');

var app = express();

// Flash for storing errors between requests
const flash = require('connect-flash');
app.use(flash());


// Import the mongoose module
const mongoose = require("mongoose");
mongoose.set("strictQuery", false);

// Define the database URL to connect to.
const mongoDB = process.env.MongoDB_URI;

// Wait for database to connect, logging an error if there is a problem
main().catch((err) => console.log(err));
async function main() {
  await mongoose.connect(mongoDB);
}

// Session middleware
app.use(session({ 
  secret: "shwordle", 
  resave: false, 
  saveUninitialized: false,
  cookie: {
    secure: false,
  },
}));

// Passport Local Strategy for auth
passport.use(
  new LocalStrategy(async (username, password, done) => {
    try {
      const user = await User.findOne({ username: username.toLowerCase() });
      if (!user) {
        return done(null, false, { message: "Incorrect username" });
      }

      const match = await bcrypt.compare(password, user.password);
      if (!match) {
        // passwords do not match!
        return done(null, false, { message: "Incorrect password" })
      }
      
      return done(null, user);
    } catch (err) {
      return done(err);
    }
  })
);

passport.serializeUser((user, done) => {
  done(null, user.id);
});

passport.deserializeUser(async (id, done) => {
  try {
    const user = await User.findById(id);
    done(null, user);
  } catch(err) {
    done(err);
  };
});

app.use(passport.initialize());
app.use(passport.session());

app.use(express.urlencoded({ extended: false }));

app.use((req, res, next) => {
  res.locals.currentUser = req.user;
  next();
});

// View engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

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('/', indexRouter);
app.use('/user', userRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// 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.render('error');
});

module.exports = app;