app.js

const express = require("express");
const expressLayouts = require("express-ejs-layouts");
const mongoose = require("mongoose");
const flash = require("connect-flash");
const session = require("express-session");
const passport = require("passport");
const app = express();

//Passport config
require("./config/passport")(passport);

//DB Config
const db = require("./config/keys").MongoURI;

//Connect to Mongo
mongoose.connect(db, {useNewUrlParser: true})
  .then(() => console.log("MongoDB Connected..."))
  .catch(err => console.log(err)); 

//EJS
app.use(expressLayouts);
app.set("view engine", "ejs");

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

//Express session
app.use(session({
    secret: 'secret',
    resave: true,
    saveUninitialized: true
}));

//Passport Middleware
app.use(passport.initialize());
app.use(passport.session());

//Connect Flash
app.use(flash());

//Global Vars
app.use((req, res, next) => {
    res.locals.success_msg = req.flash("success_msg");
    res.locals.error_msg = req.flash("error_msg");
    res.locals.error = req.flash("error");
    next();
});

//Routes
app.use("/", require("./routes/index"));
app.use("/users", require("./routes/users"));

const PORT = process.env.PORT || 5000;

app.listen(PORT, console.log(`Server started on post ${PORT}`));