app.js

const express = require("express");
const ejs = require("ejs");
const mongoose = require("mongoose");
const passport = require("passport");
const LocalStrategy = require("passport-local");
const passportLocalMongoose = require("passport-local-mongoose");
const bodyParser = require("body-parser");
const flash = require("req-flash");
const expressSession = require("express-session");
const authController = require("./controllers/auth.controller");
const middleWares = require("./middlewares/middlewares");
const cookieParser = require("cookie-parser");
const multer = require("multer");
const path = require("path");
const fs = require("fs");
const uuid = require("uuid/v4");
const compression = require("compression");
const helmet = require("helmet");

const User = require("./models/user.model");

//Creating server
const server = express();

//Setting view engine
server.set("view engine", "ejs");
server.use("/assets/css", express.static(__dirname + "/assets/css"));
server.use("/assets/img", express.static(__dirname + "/assets/img"));
server.use("/uploads", express.static(__dirname + "/uploads"));
server.use("/assets/js", express.static(__dirname + "/assets/js"));

//connect to mongo db
mongoose.connect(
  "mongodb+srv://ajal:ajal123@e-xhibyte-3krkl.mongodb.net/test?retryWrites=true&w=majority",
  {
    useNewUrlParser: true,
    useCreateIndex: true,
    useUnifiedTopology: true,
  }
);

//Using resources
server.use(
  expressSession({
    secret: "Polisaanam",
    resave: false,
    saveUninitialized: false,
  })
);

server.use(bodyParser.urlencoded({ extended: false }));
server.use(bodyParser.json());
server.use(passport.initialize());
server.use(passport.session());
server.use(cookieParser());
server.use(flash());
server.use(compression()); //Compress all routes
server.use(helmet()); //Use Helmet to protect against well known vulnerabilities

//Setting up Passport
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

//Route Path
const adminRoute = require("./routes/admin.route");
const userRoute = require("./routes/user.route");

const bookExbRoute = require("./routes/bookExb.route");
const artExbRoute = require("./routes/artExb.route");
const productExbRoute = require("./routes/productExb.route");

//Routing
server.use("/polisaanam", middleWares.hasAdminPrivs, adminRoute);
server.use("/profile", middleWares.isLoggedIn, userRoute);

server.use("/bookExb", middleWares.isLoggedIn, bookExbRoute);
server.use("/artExb", middleWares.isLoggedIn, artExbRoute);
server.use("/productExb", middleWares.isLoggedIn, productExbRoute);

authController(server);

//Static pages

server.get("/", (req, res) => {
  if (req.user) return res.render("home");

  return res.render("index");
});

server.get("/about", (req, res) => {
  res.render("about");
});

server.get("/home", middleWares.isLoggedIn, (req, res) => {
  res.render("home", { user: req.user });
});

// @Ajal333, add func to remove dp.
//Uploading profile Image
//Path to save files
const upload = multer({ dest: __dirname + "/uploads/" });

server.get("/upload", (req, res) => {
  res.render("profileImageUploader");
});

server.post(
  "/upload",
  middleWares.isLoggedIn,
  upload.single("file" /* name attribute of <file> element in your form */),
  (req, res) => {
    const tempPath = req.file.path;
    const imageName = uuid().toString() + ".png";
    const targetPath = path.join(__dirname, "./uploads/" + imageName);

    if (
      path.extname(req.file.originalname).toLowerCase() === ".png" ||
      path.extname(req.file.originalname).toLowerCase() === ".jpeg"
    ) {
      fs.rename(tempPath, targetPath, (err) => {
        if (err) return handleError(err, res);
        User.findByIdAndUpdate(
          { _id: req.user.id },
          { imgUrl: imageName },
          (err) => {
            if (err) {
              console.log(err);
              return res.redirect("/profile");
            }
            console.log("Image added.");
            return res.redirect("/profile");
          }
        );
      });
    } else {
      fs.unlink(tempPath, (err) => {
        if (err) return handleError(err, res);

        res
          .status(403)
          .contentType("text/plain")
          .end("Only .png and .jpeg files are allowed!");
      });
    }
  }
);
// Profile Image Uploading done

const PORT = process.env.PORT || 5000;

server.listen(PORT, () => console.log(`Working on: http://localhost:${PORT}`));