KoalaSync/website/www/lang-init.min.js

(function() {
var html = document.documentElement;
var path = window.location.pathname;

var langMap = {
'de': 'de',
'fr': 'fr',
'es': 'es',
'pt': 'pt-BR',
'ru': 'ru'
};

var isRootIndex = path === '/' || path === '/index.html' || path === '';

if (isRootIndex) {
var savedLang = localStorage.getItem('koala_lang');
var browserLang = navigator.language.split('-')[0];
var preferredLang = savedLang || langMap[browserLang] || 'en';

if (preferredLang !== 'en') {
window.location.replace(preferredLang + '/');
return;
}
}

var htmlClasses = html.className.split(' ');
var activeLang = null;
var hasStaticLang = false;
for (var i = 0; i < htmlClasses.length; i++) {
if (htmlClasses[i].indexOf('lang-') === 0) {
hasStaticLang = true;
var langPart = htmlClasses[i].substring(5);
activeLang = langPart === 'pt-br' ? 'pt-BR' : langPart;
break;
}
}

if (hasStaticLang) {
localStorage.setItem('koala_lang', activeLang);
} else {
var savedLang = localStorage.getItem('koala_lang');
var browserLang = navigator.language.split('-')[0];
activeLang = savedLang || langMap[browserLang] || 'en';

if (activeLang !== 'de') {
activeLang = 'en';
}

html.classList.add('lang-' + activeLang);
html.lang = activeLang;
}

var isIndex = path === '/' || path.endsWith('index.html') || path.split('/').pop() === '';
var isJoin = path.includes('join');

if (isIndex) {
var titles = {
en: 'KoalaSync | Real-time Video Synchronization for Friends',
de: 'KoalaSync | Echtzeit-Video-Synchronisation für Freunde'
};
document.title = titles[activeLang] || titles.en;
} else if (isJoin) {
var titles = {
en: 'Join Room | KoalaSync',
de: 'Raum beitreten | KoalaSync'
};
document.title = titles[activeLang] || titles.en;
}
})();