feat(www): locale specific urls (#12508)

packages/console/app/src/component/locale-links.tsx

@@ -0,0 +1,36 @@
+import { Link } from "@solidjs/meta"
+import { For } from "solid-js"
+import { getRequestEvent } from "solid-js/web"
+import { config } from "~/config"
+import { useLanguage } from "~/context/language"
+import { LOCALES, route, tag } from "~/lib/language"
+
+function skip(path: string) {
+  const evt = getRequestEvent()
+  if (!evt) return false
+
+  const key = "__locale_links_seen"
+  const locals = evt.locals as Record<string, unknown>
+  const seen = locals[key] instanceof Set ? (locals[key] as Set<string>) : new Set<string>()
+  locals[key] = seen
+  if (seen.has(path)) return true
+  seen.add(path)
+  return false
+}
+
+export function LocaleLinks(props: { path: string }) {
+  const language = useLanguage()
+  if (skip(props.path)) return null
+
+  return (
+    <>
+      <Link rel="canonical" href={`${config.baseUrl}${route(language.locale(), props.path)}`} />
+      <For each={LOCALES}>
+        {(locale) => (
+          <Link rel="alternate" hreflang={tag(locale)} href={`${config.baseUrl}${route(locale, props.path)}`} />
+        )}
+      </For>
+      <Link rel="alternate" hreflang="x-default" href={`${config.baseUrl}${props.path}`} />
+    </>
+  )
+}