app.js

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

const express = require('express');
const app = express();
const path = require('path');
const methodOverride = require('method-override');
const mongoose = require('mongoose');
const ejsMate = require('ejs-mate');
const session=require("express-session");
const MongoStore=require("connect-mongo");
const flash= require("connect-flash");
const passport=require("passport");
const LocalStrategy=require("passport-local");
const User=require("./models/user.js");



const listingsRouter=require("./routes/listing.js");
const reviewRouter=require("./routes/review.js");
const userRouter=require("./routes/user.js");
const { error } = require("console");
const dbURL=(process.env.ATLASDB_URL);

app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, '/views'));
app.use(express.static(path.join(__dirname, 'public')));
app.use(express.urlencoded({extended: true}));
app.use(methodOverride('_method'));
app.engine('ejs', ejsMate);

main()
.then(()=>{console.log('connection successful');})
.catch((err)=>{console.log(err);})

async function main(){
    await mongoose.connect(dbURL);}

const store= MongoStore.create({
    mongoUrl: dbURL,
    crypto:{
        secret:process.env.SECRET,
    },
    touchAfter:24*3600,
});

store.on("error",()=>{
    console.log("Error in Mongo Atlas session",err);
});

const sessionOptions={
    store,
    secret:process.env.SECRET,
    resave:false,
    saveUninitialized:true,
    cookie :{
        expires: Date.now() + 7*24*60*60*1000,
        maxAge:7*24*60*60*1000,
        httpOnly:true,
    }
};

app.use(session(sessionOptions));
app.use(flash());

app.use(passport.initialize());
app.use(passport.session());
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());


app.use((req,res,next)=>{
    res.locals.success=req.flash("success");
    res.locals.errormsg=req.flash("error");
    res.locals.currUser=req.user;
    next();
});

app.get("/",(req,res)=>{
  res.redirect("/signup")});

app.use("/listings",listingsRouter);
app.use("/listings/:id/reviews",reviewRouter);
app.use("/",userRouter);
// app.all("*", (req, res, next) => {
//   next(new ExpressError(404, "Page not found!"));
// });
app.use((err, req, res, next)=>{
    let{statusCode = 500, message = 'Something went wrong!'} = err;
    res.render('error.ejs', {err});
});

app.listen(8080, ()=>{
    console.log('app is listening');
});