app.js

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("./utilis/expresserror.js");
const Listings = require("./routes/listing.js");
const review = require("./routes/review.js");
const session = require("express-session");
const MongoStore = require('connect-mongo');
const cookie = require("express-session/session/cookie.js");
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 reviewsRouter = require("./routes/review.js");
const userRouter = require("./routes/user.js");




const dburl = process.env.ATLASDBURL

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

async function main(params) {
    await mongoose.connect(dburl);
}
app.engine('ejs', ejsmate);
app.set("view engine","ejs");
app.set("views",path.join(__dirname,"views"));
app.use(express.urlencoded({extended:true}));
app.use(methodoverride("_method"))
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 sessionOption = {
    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 iam root")
// }) 


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

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

// use static serialize and deserialize of model for passport session support
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.use("/listings",listingRouter);
app.use("/listings/:id/reviews",reviewsRouter);
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});
})

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