add logger and daily rotating log files

lib/middlewares.js

@@ -1,4 +1,7 @@
-const { checkValidURL } = require('./utils')
+const winston = require('winston')
+const expressWinston = require('express-winston')
+const path = require('path')
+const { checkValidURL, createTransports } = require('./utils')
 const MissingURLParameter = () => new Error('Please provide valid URL or event number.')
 
 const sendJSON = (req) => {
@@ -6,8 +9,6 @@ const sendJSON = (req) => {
 }
 
 const genericErrorHandler = (err, req, res, next) => {
-  console.error(err.stack)
-
   if (sendJSON(req)) {
     res
       .status(500)
@@ -37,8 +38,32 @@ const forceSecure = (req, res, next) => {
   return next()
 }
 
+const createRouteLogger = ({ dev }) => {
+  return expressWinston.logger({
+    transports: createTransports(),
+    format: winston.format.combine(
+      winston.format.colorize(),
+      winston.format.json()
+    ),
+    meta: true,
+    expressFormat: true,
+  })
+}
+
+const createErrorLogger = ({ dev }) => {
+  return expressWinston.errorLogger({
+    transports: createTransports(),
+    format: winston.format.combine(
+      winston.format.colorize(),
+      winston.format.json()
+    ),
+  })
+}
+
 module.exports = {
   genericErrorHandler,
   checkURLParameter,
   forceSecure,
+  createRouteLogger,
+  createErrorLogger,
 }