feat: notes fallback languages and 404

src/routes/[lang=lang]/notes/[slug]/+page.ts

@@ -1,4 +1,28 @@
+import { error, redirect } from '@sveltejs/kit';
+
+// Based on visitors
+const LANGUAGES = ['en', 'es', 'hu'];
+
+async function findAvailableLang(
+  slug: string,
+  lang: string,
+): Promise<string | null> {
+  const fallbackLanguages = LANGUAGES.filter((l) => l !== lang);
+
+  for (const lang of fallbackLanguages) {
+    try {
+      await import(`../../../../mdsvex/${slug}/${lang}.svx`);
+      return lang;
+    } catch (_) {
+      continue;
+    }
+  }
+
+  return null;
+}
+
 export async function load({ params }) {
+  // FIXME: I dont like this at all, needs refactor but its 1:37 AM
   try {
     const post = await import(
       `../../../../mdsvex/${params.slug}/${params.lang}.svx`
@@ -9,11 +33,21 @@ export async function load({ params }) {
       content,
     };
   } catch (error) {
-    const post = await import(`../../../../mdsvex/${params.slug}/en.svx`);
+    // Failed to find the requested language, try to find a fallback language
+  }
+
+  const fallbackLang = await findAvailableLang(params.slug, params.lang);
+
+  if (fallbackLang) {
+    const post = await import(
+      `../../../../mdsvex/${params.slug}/${fallbackLang}.svx`
+    );
     const content = post.default;
 
     return {
       content,
     };
   }
+
+  throw error(404, 'Not found');
 }