app.js

const express = require("express");
const app = express();
const mongoose = require("mongoose");
const Listing = require("./models/listing.js"); // required it from models files
const path = require("path");
const ejsMate = require("ejs-mate"); // it is for making same page throughout the project
const wrapAsync = require("./utils/wrapAsync.js");
const ExpressError = require("./utils/ExpressError.js");
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");

require('dotenv').config(); // for the .env file

const dbUrl = process.env.ATLASDB_URL;

async function main() {
  await mongoose.connect(dbUrl);
}
main()
  .then(() => {
    console.log("db connected");
  })
  .catch((err) => {
    console.log(err);
  });

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

const methodOverride = require("method-override");
app.use(methodOverride("_method"));

const listingsRouter = require("./routes/listing.js"); // used with router object
const reviewsRouter = require("./routes/review.js");
const userRouter = require("./routes/user.js");
const { error } = require("console");
//-----------------------------------//


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: false,
  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.get("/", (req, res) => {
  res.redirect("/listings");
});


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

//--- PASSPORT----

app.use(passport.initialize());
app.use(passport.session());
passport.use(new LocalStrategy(User.authenticate())); // this line means that every req is authencticated by "LocalStrategy" and with method "User.authenticate" user are "authenticated"

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: "Shubham1234"
//     })
//     let registeredUser = await User.register(fakeUser,"helloworld");
//     res.send(registeredUser);
// })

app.use("/listings", listingsRouter); // ----- THIS LINE NOW CONTAINS tag related to /listings
app.use("/listings/:id/reviews", reviewsRouter);
app.use("/", userRouter);

app.use((err, req, res, next) => {
  let { statusCode = 500, message = "Something went wrong" } = err;
  res.status(statusCode).render("error.ejs", { err });
});
// so wehn ever some error will occur wwrapAsync will redirect it here

app.listen(8080, (req, res) => {
  console.log("listening to the project");
});