is this a good start file
i want this to be generic and use it across all my projects
as bioler plate code

please review 

require("dotenv").config(); const config = require("./config.json"); const express = require("express"); const http = require("http"); const cors = require("cors"); const helmet = require("helmet"); const rateLimit = require("express-rate-limit"); const methodOverride = require("method-override"); const createLogger = require("./src/core/Logger"); const logger = createLogger("medics-communication-server"); const LockManager = require("node-locksmith"); const MongoDBConnectionManager = require("./src/core/MongodbService"); const app = express(); app.logger = logger; const PromiseRouter = require("express-promise-router"); module.exports = app; /** * Initialize termination event handlers for graceful application shutdown. */ const lockManager = new LockManager({ lockFileName: "medics-communication-server.lock", }); lockManager.initializeTerminationHandlers(); // 1. Use express-async-errors for cleaner async error handling require("express-async-errors"); // 2. Enable CORS (Cross-Origin Resource Sharing) app.use(cors()); // 3. Use Helmet middleware for securing your app by setting various HTTP headers app.use(helmet()); // 4. Use express-rate-limit middleware to limit repeated requests to your API endpoints const limiter = rateLimit({ windowMs: 15 * 60 * 1000, // 15 minutes max: 100, // limit each IP to 100 requests per windowMs }); app.use(limiter); // 5. Use methodOverride middleware for HTTP method support app.use(methodOverride("X-HTTP-Method-Override")); app.use(express.json()); app.use(express.urlencoded({ extended: true })); app.get(["/hc", "/healthcheck"], (req, res) => { res.status(200).send("OK"); }); // 6. Logging middleware app.use((req, res, next) => { // Extracting client IP address from the request headers const clientIp = req.headers["x-forwarded-for"] || req.connection.remoteAddress; // Log request method, URL, and client IP address logger.info(`Processing ${req.method} ${req.url} from ${clientIp}`); // Log request headers logger.info("Request Headers:", req.headers); // Log query parameters logger.info("Query Parameters:", req.query); // Log request body if it exists if (req.body && Object.keys(req.body).length > 0) { logger.info("Request Body:", req.body); } else { logger.info("Request Body: N/A"); } next(); }); /** * Initialize the application. * Handles setup, including database connection, middleware, error handling, and HTTP server creation. * * @throws {Error} If there are errors during initialization, the process exits with an error code. */ async function initializeApp() { try { // Initialize the lock manager to prevent multiple instances of the application await lockManager.checkLock(); await lockManager.createLock(Infinity, 3); // Create an instance of MongoDBConnectionManager with custom URI and logger const dbManager = new MongoDBConnectionManager( process.env.COMMUNICATION_SERVER_MONGODB_URL || config.mongodbURL, logger ); // Connect to MongoDB using the provided URI await dbManager.connectToDatabase(); // Load models from the models directory app.models = require("./src/models/index"); // Dynamically load routes using a PromiseRouter loadRoutes(); // Handle unhandled promise rejections and log them process.on("unhandledRejection", (error, promise) => { logger.error("Unhandled Promise Rejection:", error); }); // Graceful shutdown on SIGTERM process.on("SIGTERM", () => { // Perform cleanup actions before exiting logger.info("Received SIGTERM. Shutting down gracefully."); process.exit(0); }); const httpPort = process.env.COMMUNICATION_SERVER_SERVER_PORT || config.serverPort; logger.info(`HTTP server is listening on port: ${httpPort}`); http.createServer(app).listen(httpPort); } catch (error) { // Log initialization errors and exit the process with an error code logger.error("Initialization error:", error); process.exit(1); } } /** * Dynamically loads routes from the routes directory using a PromiseRouter. */ const loadRoutes = () => { const routes = require("./routes"); const router = PromiseRouter(); // Iterate through routes and attach controllers to the router for (const [route, controller] of Object.entries(routes)) { router.use(route, controller(app, route)); } // Use the router for handling routes in the application app.use(router); }; // Initialize the application initializeApp();