feat(server/middlewares): add i18n stuff to auth middleware

feat(server/middlewares): add i18n stuff to auth middleware

src/server/middlewares/auth.js

@@ -3,6 +3,7 @@
  */
 import chalk from 'chalk'
 import jwt from 'jsonwebtoken'
+import {supportedLanguages, defaultLanguage} from '../i18n'
 import {JWT_TOKEN} from 'common/api/LocalStorageCookiesSvc'
 /**
  * Auth-related middleware.
@@ -11,10 +12,15 @@ import {JWT_TOKEN} from 'common/api/LocalStorageCookiesSvc'
  * @param  {Response} res
  * @param  {Function} next
  */
-export default (req: express$Request, res: express$Response, next: () => void) => {
+export default (
+	req: express$Request,
+	res: express$Response,
+	next: () => void
+) => {
+	const language: string = req.acceptsLanguages(supportedLanguages) || defaultLanguage
 	req.user = {
 		token: null,
-		lang: 'en',
+		language,
 		isLoggedIn: false
 	}
 
@@ -23,15 +29,17 @@ export default (req: express$Request, res: express$Response, next: () => void) =
 		return next()
 	}
 
-	console.log(chalk.blue('USER HAS TOKEN'))
+	console.log(chalk.blue('USER HAS JWT TOKEN'))
 	jwt.verify(token, process.env.JWT_SECRET, (err, decoded) => {
 		if (err) {
 			console.log(chalk.red('CANT DECODE JWT TOKEN!', err))
 		} else {
 			console.log(chalk.magenta('TOKEN SUCCESSFULLY DECODED'))
+			// NOTE: set user language in jwt token that may helps handling i18n efficiently
+			const {username} = decoded
 			req.user = {
-				...decoded,
 				token,
+				username,
 				isLoggedIn: true
 			}
 		}