Redirect version root to quickstart, latest to latest (#41)

Author: robertbastian

astro.config.mjs

@@ -5,9 +5,9 @@ import starlightLinksValidator from 'starlight-links-validator'
 
 
 // !! UPDATE LATEST VERSION HERE !!
-let latest_version = '2.0';
+const latest_version = '2.0';
 
-let latest_dir_name = latest_version.replace('.', '_');
+export const latest_dir_name = latest_version.replace('.', '_');
 
 // https://astro.build/config
 export default defineConfig({

src/middleware.ts

@@ -1,12 +1,46 @@
-import { defineMiddleware } from "astro/middleware";
+import { sequence } from "astro/middleware";
+import { latest_dir_name } from "../astro.config.mjs";
 
-export const onRequest = defineMiddleware((context, next) => {
+export const onRequest = sequence(redirectLatest, redirectSemver, redirectVersionRoot, redirectTutorialsRoot);
 
-  // path uses a semver (2.0.1) instead of a directory name (2_0)
-  let parts = context.url.pathname.match(/\/(?<major>[0-9]+)\.(?<minor>[0-9])+\.[0-9]+\/(?<rest>.*)$/);
+// redirect /latest to the latest version
+function redirectLatest(context, next) {
+  if (context.url.pathname.slice(0, 7) == '/latest') {
+    let rest = context.url.pathname.slice(context.url.pathname.length == 7 ? 7 : 8);
+    return Response.redirect(new URL(`/${latest_dir_name}/${rest}`, context.url), 302);
+
+  }
+
+  return next();
+}
+
+// redirect a semver (/2.0.1) to a directory name (/2_0)
+function redirectSemver(context, next) {
+  let parts = context.url.pathname.match(/^\/(?<major>[0-9]+)\.(?<minor>[0-9])+\.[0-9]+(?<rest>\/.*)?$/);
+  if (parts?.groups) {
+    return Response.redirect(new URL(`/${parts.groups['major']}_${parts.groups['minor']}${parts.groups['rest'] || ''}`, context.url), 302);
+  }
+
+  return next();
+}
+
+// redirect the version root (/2_0) to quickstart (/2_0/tutorials/quickstart)
+function redirectVersionRoot(context, next) {
+  let parts = context.url.pathname.match(/^\/(?<major>[0-9]+)_(?<minor>[0-9])+\/?$/);
+  if (parts?.groups) {
+    return Response.redirect(new URL(`/${parts.groups['major']}_${parts.groups['minor']}/tutorials/quickstart`, context.url), 302);
+  }
+
+  return next();
+};
+
+
+// redirect the tutorials root (/2_0/tutorials) to quickstart (/2_0/tutorials/quickstart)
+function redirectTutorialsRoot(context, next) {
+  let parts = context.url.pathname.match(/^\/(?<major>[0-9]+)_(?<minor>[0-9])+\/tutorials\/?$/);
   if (parts?.groups) {
-    return Response.redirect(new URL(`/${parts.groups['major']}_${parts.groups['minor']}/${parts.groups['rest']}`, context.url), 301);
+    return Response.redirect(new URL(`/${parts.groups['major']}_${parts.groups['minor']}/tutorials/quickstart`, context.url), 302);
   }
 
   return next();
-});
+};