app.js

const events = require('events');
events.EventEmitter.defaultMaxListeners = 30;

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


const express = require("express");
const app= express();
const mongoose = require("mongoose");
const path = require("path");
const methodOverride = require("method-override");
const ejsMate =require("ejs-mate");
const ExpressError = require("./utils/ExpressError.js");
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 listings = require("./routes/listing.js");
const reviews = require("./routes/review.js");
const users = require("./routes/user.js");


const dbUrl= process.env.ATLASDB_URL;

main()
    .then(()=>{
    console.log("connected to DB");
    })
    .catch((err)=>{
    console.log(err);
    });

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

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

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

store.on("error", ()=>{
    console.log("ERROR in MONGO SESSION STORE", err);
});

const sessionOptions = {
    store,
    secret:process.env.SECRET, 
    resave: false, 
    saveUninitialized: true,
    cookies:{
        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.error = req.flash("error");
    res.locals.currUser = req.user;
    next(); 
})

// app.get("/", (req,res) =>{
//     res.send("Hi, I am root");
// });


app.use("/listings",listings);
app.use("/listings/:id/reviews",reviews);
app.use("/",users);


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.status(statusCode).render("error.ejs",{message});
    //res.status(statusCode).send(message); 
})

app.listen(8050, () =>{
    console.log("server is listening to port 8050");
});
























    //app.get("/testListing", async(req,res) =>{

    // let sampleListing = new Listing({
    //     title:"My new Villa",
    //     description:"By the beach",
    //     price: 1200,
    //     location:"Calangute, Goa",
    //     country:"India",
    // });
    
    // await sampleListing.save();
    // console.log("sample was saved");
    // res.send("successful testing");
    
    // })

    /*app.get("/demouser",async(req,res)=>{
        let fakeUser = new User({
            email:"st@gmail.com",
            username:"dela-student"
        });
        const registeredUser = await User.register(fakeUser,"helloWorld");
        res.send(registeredUser);
    });*/