logger.js

// https://youtube.com/watch?v=lWmbK6iZML4
// Pino vs Winston
//   - https://betterstack.com/community/comparisons/pino-vs-winston
//   - https://dev.to/wallacefreitas/pino-vs-winston-choosing-the-right-logger-for-your-nodejs-application-369n
// Choosing a logging framework - https://betterstack.com/community/guides/logging/logging-framework/
// Logging libraries - https://betterstack.com/community/guides/logging/best-nodejs-logging-libraries
// Structured logging in Node.js with Winston - https://thedreaming.org/2020/06/24/structured-logging-nodejs
console.log ('LOGGERRRRRRRRRRRRRRRR')

const LEVELS = {
  error: 0 // highest
, warning: 1
, info: 2
, http: 3
, debug: 4
} // LEVELS

import url from 'url'
function log ( request ) {
  let agent = request.get ( 'User-Agent' )
  , { method, protocol, hostname, path, query, url } = request
  , url_parts = new URL ( url, `${ protocol }://${ hostname }` )
  , ip = request.get ( 'x-forwarded-for' ) || request.socket.remoteAddress

  console.log ( 'Query: ', query )

  return `[${ ip }] `
    + method + ' '
    + `${ protocol }://${ hostname }:${ process.env.PORT }${ url }  `
    + 'Path: ' + path + ' | '
    + 'Query Search: ' + url_parts.search.replace ( /\?/, '' )  + ' | '
    + agent
} // log

export default ( location = './index.log' ) =>
  ( req, res, next ) => {
    console.log ( new Date, location, log ( req ) )

    res.setHeader ( 'X-Powered-By', 'devPunks' )
    res.setHeader ( 'X-Timestamp', `${ Date.now () } (${ new Date })` )

    next ( req, res )
  } // =>