OPEN-ISP v0.5 (pickle-lime) — rilis open-source perdana

Aplikasi billing & manajemen ISP (fiber optic) — PWA pelanggan, portal teknisi & kolektor,
admin panel lengkap, multi-vendor OLT, RADIUS, WhatsApp/Telegram, pembayaran QRIS.

Kredit & lisensi (ISC):
- Base kode & repo: alijayanet/billing-rtrw oleh Alijaya Net — terima kasih banyak
  atas base kode dan repo yang bermanfaat.
- Add-on: GoWA, LibreSpeed/OpenSpeedTest, Uptime Kuma, notification-forwarder.
- Dikembangkan menjadi OPEN-ISP oleh oxpoe — https://github.com/oxpoe/open-isp

config/i18n.js

@@ -0,0 +1,50 @@
+const fs = require('fs');
+const path = require('path');
+
+const SUPPORTED_LANGS = new Set(['id', 'en']);
+const FALLBACK_LANG = 'id';
+
+function loadLocale(lang) {
+  try {
+    const filePath = path.join(__dirname, `../locales/${lang}.json`);
+    return JSON.parse(fs.readFileSync(filePath, 'utf-8'));
+  } catch {
+    return {};
+  }
+}
+
+const dictionaries = {
+  id: loadLocale('id'),
+  en: loadLocale('en')
+};
+
+function normalizeLang(input) {
+  const lang = String(input || '').trim().toLowerCase();
+  return SUPPORTED_LANGS.has(lang) ? lang : FALLBACK_LANG;
+}
+
+function getNestedValue(obj, keyPath) {
+  const keys = String(keyPath || '').split('.');
+  let cur = obj;
+  for (const k of keys) {
+    if (!cur || typeof cur !== 'object' || !(k in cur)) return undefined;
+    cur = cur[k];
+  }
+  return cur;
+}
+
+function t(lang, key, fallback = '') {
+  const useLang = normalizeLang(lang);
+  const fromLang = getNestedValue(dictionaries[useLang], key);
+  if (fromLang !== undefined) return fromLang;
+  const fromFallback = getNestedValue(dictionaries[FALLBACK_LANG], key);
+  if (fromFallback !== undefined) return fromFallback;
+  return fallback || key;
+}
+
+module.exports = {
+  SUPPORTED_LANGS,
+  FALLBACK_LANG,
+  normalizeLang,
+  t
+};