router.js

const BooksController = require('./controllers/bookController')

class BooksRouter {
	handleRequest(request, response) {
		if(request.url === "/books") {
			if (request.method === "GET") {
      			BooksController.getAll(response);
	    	} else if (request.method === "POST") {
	    		BooksController.post(request, response);
	   		} else {
					BooksController.sendError(response)
    		} 
		}	else {
			let bookId = parseInt(request.url.slice(7))
			if(bookId !== NaN) {
				if (request.method === "PUT" || request.headers['access-control-request-method'] === 'PUT') {
					BooksController.editOne(request, response, bookId)
				} else if (request.method === "DELETE" || request.headers['access-control-request-method'] === 'DELETE'){
					BooksController.delete(response, bookId)
				} else if (request.method === "GET") {
					BooksController.getOne(response, bookId)
				}
			} else {
				BooksController.sendError(response)
			}
		}
	}
}

module.exports = new BooksRouter()