Update Site source

public/i18n.js

@@ -3,20 +3,51 @@
   const dictionaries = window.LifeOSLocales || {};
   const en = dictionaries.en || {};
   const zh = dictionaries['zh-CN'] || {};
+  const PREFERENCE_KEY = 'lifeos_language_preference_v1';
+  const validPreference = value => ['auto', 'en', 'zh'].includes(value);
   const lookup = (object, path) => path.split('.').reduce((value, part) => value?.[part], object);
-  const current = () => typeof window.lang === 'function' && window.lang() === 'zh' ? 'zh' : 'en';
+  const detectBrowserLanguage = () => {
+    const preferences = navigator.languages?.length ? navigator.languages : [navigator.language || navigator.userLanguage || 'en'];
+    return preferences.some(value => String(value).toLowerCase().startsWith('zh')) ? 'zh' : 'en';
+  };
+  const readPreference = () => {
+    try {
+      const saved = localStorage.getItem(PREFERENCE_KEY);
+      if (validPreference(saved)) return saved;
+      let oldSettings = {};
+      try { oldSettings = JSON.parse(localStorage.getItem('lifeos_settings') || '{}'); } catch {}
+      const legacyMode = oldSettings.languageMode ?? (['en', 'zh'].includes(oldSettings.language) ? 'manual' : 'auto');
+      const migrated = legacyMode === 'manual' && ['en', 'zh'].includes(oldSettings.language) ? oldSettings.language : 'auto';
+      localStorage.setItem(PREFERENCE_KEY, migrated);
+      return migrated;
+    } catch { return 'auto'; }
+  };
+  let preference = readPreference();
+  const language = () => preference === 'auto' ? detectBrowserLanguage() : preference;
 
   function t(key, values = {}) {
-    const selected = current() === 'zh' ? zh : en;
+    const selected = language() === 'zh' ? zh : en;
     const template = lookup(selected, key) ?? lookup(en, key) ?? key;
     return String(template).replace(/\{(\w+)\}/g, (_, name) => values[name] ?? `{${name}}`);
   }
 
-  function locale() { return current() === 'zh' ? 'zh-CN' : 'en-US'; }
+  function locale() { return language() === 'zh' ? 'zh-CN' : 'en-US'; }
   function date(value, options) {
     const parsed = value instanceof Date ? value : new Date(typeof value === 'string' && /^\d{4}-\d{2}-\d{2}$/.test(value) ? `${value}T12:00:00` : value);
     return new Intl.DateTimeFormat(locale(), options).format(parsed);
   }
   function number(value, options) { return new Intl.NumberFormat(locale(), options).format(value); }
-  window.LifeI18n = { t, date, number, locale, dictionaries: { en, zh } };
+  function setLanguage(value) {
+    if (!validPreference(value)) return;
+    preference = value;
+    try { localStorage.setItem(PREFERENCE_KEY, value); } catch {}
+    window.renderIcons?.();
+    window.renderAll?.();
+    window.applyLanguage?.();
+    window.toast?.(value === 'auto' ? (language() === 'zh' ? 'feedback.followingZh' : 'feedback.followingEn') : (value === 'zh' ? 'feedback.languageZh' : 'feedback.languageEn'));
+  }
+
+  window.lang = language;
+  window.setLanguage = setLanguage;
+  window.LifeI18n = { t, date, number, locale, language, preference: () => preference, dictionaries: { en, zh } };
 })();