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("./utils/ExpressError.js")

// const MONGO_URL="mongodb://127.0.0.1:27017/wanderlust";
const dbUrl=process.env.ATLASDB_URL;


const {listingSchema,reviewSchema}=require("./schema.js")
const Review=require("./models/review.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");

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

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

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



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

//Initialize Passport
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,next)=>{
//     let fakeUser=new User({
//         email:"student@gmail.com",
//         username:"delta-student",
//     });

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

// });



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



// Function  of Joi

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});

});

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