Express + mongoose app with simple query on get request with id parameter.

main.js

// load libraries
require('dotenv').config();
const express = require('express'); 
const mongoose = require('mongoose');

// start mongoose with the .env connection string
async function start() {
    try {
        await mongoose.connect(process.env.CONNECTION);
        console.log('Mongoose started');
    } catch (e) {
        console.log(`Error connecting mongoose ${e}`);
    }
}

// start express
async function listen() {
    // create app
    const express_application = express();
    
    // create film schema
    const film_schema = new mongoose.Schema({
        id: Number,
        name: String
    });

    // create film model from schema
    const film = mongoose.model('Film', film_schema);

    // get request with id parameter
    express_application.get('/api/v1/films/:id', async (request, response) => {
        // search for a film with id = param, if not set to object with status failed
        let query = await film.findOne({id : `${request.params.id}`}).exec() || {status: 'failed'};
        // send the response
        response.status(200).send(query);
    });
    try {
        // server listens to PORT
        express_application.listen(process.env.PORT, () => console.log('Express started'));
    } catch(e) {
        console.log('Error starting express');
    }
}

// main function
async function main() {
    await start();
    await listen();
}

// call main
main().catch( e => console.log(`Unhandled error ${e}`));