app.js

const dotenv = require("dotenv").config();
const express = require("express");
const app = express();
const path = require("path")
const mongoose = require("mongoose");
const ejsMate = require('ejs-mate');
const methodOverride = require("method-override")
const session = require("express-session")
const flash = require("connect-flash")
const MongoStore = require("connect-mongo")
const dbUrl = process.env.MONGODB_ATLAS_URI;
const ExpressError = require("./utility/ExpressError");
const { Buyer } = require("./models/User");

let sessionOptions = {
    store: MongoStore.create({
        mongoUrl: dbUrl,
    }),
    secret: "dafsdfasdfasd",
    resave: false,
    saveUninitialized: true,
    cookie: {
        httpOnly: true, secure: false, maxAge: 7 * 24 * 60 * 60 * 1000,
    }
}

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

// Routes
const userAuthRoutes = require("./routes/userAuth")
const userAccountRoutes = require("./routes/userAccount")
const productRoutes = require("./routes/product");
const sellerRoutes = require("./routes/seller");
const cartRoutes = require("./routes/cart");
const wishlistRoutes = require("./routes/wishlist");
const reviewRoutes = require("./routes/review");
const addressRoutes = require("./routes/address");
const adminRoutes = require("./routes/admin");
const paymentRoutes = require("./routes/payment");

// use ejs-locals for all ejs templates:
app.engine('ejs', ejsMate);

// Set EJS as the view engine
app.set('view engine', 'ejs');

// Set the views directory
app.set('views', path.join(__dirname, 'views'));

// Connect to db
main().then(() => {
    console.log(`Connected To DB`)
}).catch(err => console.log(err));

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


app.use(methodOverride("_method"))
app.use(async (req, res, next) => {
    res.locals.currUser = req.session.user;
    res.locals.error = req.flash("error");
    res.locals.success = req.flash("success");

    if(process.env.RAZORPAY_KEY_ID){
        res.locals.keyId = process.env.RAZORPAY_KEY_ID;
    }

    if (res.locals.currUser) {
        if (req.session.user.role === "buyer") {
            let buyer = await Buyer.findById(req.session.user._id).populate("cart").populate("wishlist");
            if (buyer.cart) {
                res.locals.cartItems = buyer.cart.items.length;
            }else{
                res.locals.cartItems = 0;
            }
            if (buyer.wishlist) {
                res.locals.wishlistItems = buyer.wishlist.items.length;
            } else {
                res.locals.wishlistItems = 0;
            }
        }
    }

    next();
})
// Server static files
app.use(express.static(path.join(__dirname, "/public")))

// Parse URLencoded data
app.use(express.urlencoded({ extended: true }));
app.use(express.json())

app.get("/", (req, res) => {
    res.redirect("/api/products")
})

// app.use("/api/admin" , async (req, res, next) => {
//     let {apiKey} = req.query;
//     if(apiKey==="asdfasdfsdsdfsdf"){
//        return next();
//     }
//     return next(new ExpressError("Wrong API Key" , 401))
// })

// User Payment
app.use("/api/payment/" , paymentRoutes)

// Admin Routes
app.use("/api/admin/", adminRoutes);

// Product Routes
app.use("/api/products/", productRoutes);
app.use("/api/products/:id/review/", reviewRoutes)

// Seller Routes
app.use("/api/seller/", sellerRoutes)

// User auth
app.use("/api/auth/", userAuthRoutes);

// User Account
app.use("/api/user/", userAccountRoutes);
app.use("/api/addresses/", addressRoutes);
app.use("/api/wishlist/", wishlistRoutes);
app.use("/api/cart/", cartRoutes);



app.use((req, res, next) => {
    next(new ExpressError("Page Not Found", 404))
})

app.use((err, req, res, next) => {
    let { message = "Error Ocurred", statusCode = 500 } = err;
    console.log(err)
    res.status(statusCode).render("error.ejs", { message })
})

app.listen(8080, () => {
    console.log(`Server is listing on PORT ${8080}`)
})