feat(terra): use json lookup table for permanentRedirect()

Author: madonuko

app/terra/[...slug]/page.tsx

@@ -19,25 +19,19 @@ export async function generateStaticParams() {
 export default async function Page({ params }: { params: Promise<{ slug: string }> }) {
   const { slug } = await params;
 
-  let url = "";
-  if (
-    slug.toString() === "appstream" ||
-    slug.toString() === "autoupdate" ||
-    slug.toString() === "contributing" ||
-    slug.toString() === "guidelines" ||
-    slug.toString() === "policies" ||
-    slug.toString() === "srpm"
-  ) {
-    url = `https://docs.terrapkg.com/contributing/${slug}`;
-  } else if (slug.toString() === "installing" || slug.toString() === "lifecycle") {
-    url = `https://docs.terrapkg.com/usage/${slug}`;
-  } else if (slug.toString() === "infrastructure") {
-    url = `https://docs.terrapkg.com/general/${slug}`;
-  } else if (slug.toString() === "faq") {
-    url = `https://docs.terrapkg.com/reference/${slug}`;
-  } else {
-    url = "https://docs.terrapkg.com";
-  }
+  const slugKey = slug.toString();
+  const REDIRECT_MAP: Record<string, string> = {
+    appstream: `https://docs.terrapkg.com/contributing/${slug}`,
+    autoupdate: `https://docs.terrapkg.com/contributing/${slug}`,
+    contributing: `https://docs.terrapkg.com/contributing/${slug}`,
+    guidelines: `https://docs.terrapkg.com/contributing/${slug}`,
+    policies: `https://docs.terrapkg.com/contributing/${slug}`,
+    srpm: `https://docs.terrapkg.com/contributing/${slug}`,
+    installing: `https://docs.terrapkg.com/usage/${slug}`,
+    lifecycle: `https://docs.terrapkg.com/usage/${slug}`,
+    infrastructure: `https://docs.terrapkg.com/general/${slug}`,
+    faq: `https://docs.terrapkg.com/reference/${slug}`,
+  };
 
-  permanentRedirect(url);
+  permanentRedirect(REDIRECT_MAP[slugKey] ?? "https://docs.terrapkg.com");
 }