server.js

import express from "express";
import dotenv from "dotenv";
import "express-async-errors";
import morgan from "morgan";

import { dirname } from "path";
import { fileURLToPath } from "url";
import path from "path";

import helmet from "helmet";
import xss from "xss-clean";
import mongoSanitize from "express-mongo-sanitize";
import cookieParser from "cookie-parser";

import connectDB from "./db/connect.js";

import notFoundMiddleware from "./middleware/not-found.js";
import errorHandlerMiddleware from "./middleware/error-handler.js";
import authenticateUser from "./middleware/auth.js";
import authRouter from "./routes/authRoutes.js";
import jobRouter from "./routes/jobsRoutes.js";
const app = express();
dotenv.config();

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

if (process.env.NODE_ENV !== "production") {
  app.use(morgan("dev"));
}

const __dirname = dirname(fileURLToPath(import.meta.url));

app.use(express.static(path.resolve(__dirname, "./client/build"))); // this is used to serve the static files

app.use(express.json());
app.use(cookieParser());

app.use(helmet()); // this is used to set security headers
app.use(xss()); // this is used to prevent xss attacks
app.use(mongoSanitize()); // this is used to prevent nosql query injection

app.get("/", (req, res) => {
  res.send("Hello World!");
});

app.get("/api/v1", (req, res) => {
  res.send("Hello World!");
});

app.use("/api/v1/auth", authRouter);
app.use("/api/v1/jobs", authenticateUser, jobRouter);

app.get("*", (req, res) => {
  res.sendFile(path.resolve(__dirname, "./client/build", "index.html")); //this is used to serve the react app
});

app.use(notFoundMiddleware);
app.use(errorHandlerMiddleware);

const start = async () => {
  try {
    await connectDB(process.env.MONGO_URL);
    app.listen(port, () => {
      console.log(`Server listening on port ${port}`);
    });
  } catch (error) {
    console.log(error);
  }
};

start();