refactor: move welcome plugin into middleware

fresh.config.ts

@@ -4,15 +4,13 @@ import kvOAuthPlugin from "./plugins/kv_oauth.ts";
 import sessionPlugin from "./plugins/session.ts";
 import errorHandling from "./plugins/error_handling.ts";
 import securityHeaders from "./plugins/security_headers.ts";
-import welcomePlugin from "./plugins/welcome.ts";
 import type { FreshConfig } from "$fresh/server.ts";
 import { ga4Plugin } from "https://deno.land/x/fresh_ga4@0.0.4/mod.ts";
 import { blog } from "./plugins/blog/mod.ts";
 
 export default {
   plugins: [
     ga4Plugin(),
-    welcomePlugin,
     kvOAuthPlugin,
     sessionPlugin,
     tailwind(),

routes/index.tsx

@@ -3,8 +3,14 @@ import type { State } from "@/plugins/session.ts";
 import Head from "@/components/Head.tsx";
 import ItemsList from "@/islands/ItemsList.tsx";
 import { defineRoute } from "$fresh/server.ts";
+import { isGitHubSetup } from "@/utils/github.ts";
+import { redirect } from "@/utils/http.ts";
 
 export default defineRoute<State>((_req, ctx) => {
+  if (!isGitHubSetup() && ctx.url.pathname !== "/welcome") {
+    return redirect("/welcome");
+  }
+
   const isSignedIn = ctx.state.sessionUser !== undefined;
   const endpoint = "/api/items";