增加友情链接页面

public/init-locale.js

@@ -0,0 +1,32 @@
+(() => {
+  const canonicalLocale = (value) => {
+    const language = value?.toLowerCase().replaceAll("_", "-");
+    if (!language) return null;
+    if (/^zh(?:-|$)/.test(language)) return /^zh-(tw|hk|mo)(-|$)|-hant(?:-|$)/.test(language) ? "zh-Hant" : "zh-Hans";
+    if (/^en(?:-|$)/.test(language)) return "en";
+    if (/^(ja|jp)(?:-|$)/.test(language)) return "jp";
+    return null;
+  };
+  const parts = location.pathname.split("/");
+  const firstSegment = parts[1];
+  const pathLocale = canonicalLocale(firstSegment);
+  const isUnknownLanguagePath = !pathLocale && /^[a-z]{2,3}(?:-[a-z0-9]+)*$/i.test(firstSegment ?? "");
+  let locale = pathLocale;
+  if (!locale) {
+    try { locale = canonicalLocale(localStorage.getItem("kr-locale")); } catch {}
+  }
+  if (!locale) {
+    for (const language of navigator.languages?.length ? navigator.languages : [navigator.language]) {
+      locale = canonicalLocale(language);
+      if (locale) break;
+    }
+  }
+  locale ??= "en";
+  const path = pathLocale || isUnknownLanguagePath ? `/${parts.slice(2).join("/")}` : location.pathname;
+  const normalizedPath = path.replace(/\/$/, "");
+  const destination = `/${locale}${normalizedPath}/`;
+  const search = new URLSearchParams(location.search);
+  search.delete("lang");
+  const canonicalUrl = destination + (search.size ? `?${search}` : "") + location.hash;
+  if (location.pathname + location.search + location.hash !== canonicalUrl) location.replace(canonicalUrl);
+})();