adding set cookie and set lang (#68)

simple set cookie (je deteste javascript) et un setlang pour le syntastic sugar

Reviewed-on: #68
Reviewed-by: Maxime <231026@umons.ac.be>
Reviewed-by: Wal <karpinskiwal@gmail.com>
Co-authored-by: Anthony Debucquoy <debucquoy.anthony@gmail.com>
Co-committed-by: Anthony Debucquoy <debucquoy.anthony@gmail.com>

frontend/src/i18n.js

@@ -9,7 +9,7 @@
  *
  */
 
-import { getCookie } from './utils.js';
+import { getCookie, setCookie } from './utils.js';
 
 const default_lang = "EN";
 let langs;
@@ -34,10 +34,6 @@ export default function i18n(key, options) {
 	return ret;
 }
 
-//
-// Those functions are utility functions use by previous exported functions.
-//
-
 /**
  * Function that load the file with translation from the specified lang and return a dictionnary
  * @param select the language to load. could be null to fetch the cookies for an answer
@@ -61,3 +57,8 @@ export async function loadLangs(lang){
 	langs = filteredLines;
 }
 await loadLangs();
+
+export async function setLang(lang){
+	setCookie("lang", lang);
+	await loadLangs();
+}

frontend/src/utils.js

@@ -2,7 +2,7 @@
  * Return the content of a cookie with specified key
  * @param key cookie name
  */
-function getCookie(key){
+export function getCookie(key){
 	key = key + "="
 	let cookies = decodeURIComponent(document.cookie).split(";");
 	for (let el of cookies) {
@@ -14,4 +14,12 @@ function getCookie(key){
 	return "";
 }
 
-export {getCookie};
+/**
+ * Return the content of a cookie with specified key
+ * @param key cookie name
+ */
+export function setCookie(key, value){
+	cookie = key + "=" + value + ";";
+	document.cookie = cookie;
+	// Here we can apreciate the stupidity of Javascript :/
+}