app.js

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

console.log(process.env);

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 listingRouter=require("./routes/listing.js");
const reviewRouter=require("./routes/review.js");
const userRouter=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,
    cookie :{
        expires:Date.now() +7 * 24 * 60 * 60 * 1000,
        maxAge:7 * 24 * 60 * 60 * 1000,
        httpOnly:true,
    }
};
 
// app.get("/", (req,res) =>{
//     res.send("Hi, I am root");
// });

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("/demouser", async (req,res)=> {
//     let fakeUser= new User({
//         email:"student@gmail.com",
//         username:"ananyyaa"
//     });

//     let registeredUser=await User.register(fakeUser, "helloworld");
//     res.send(registeredUser);
    

// });


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

app.listen (8080, ()=> {
    console.log("server is listening to port 8080");
});