Added hidden admin only page prop effect

routes/(apps)/_middleware.ts

@@ -0,0 +1,36 @@
+import { FreshContext, MiddlewareHandler } from "$fresh/server.ts";
+import {
+  AppProperties,
+  AuthenticatedState,
+} from "$root/defaults/interfaces.ts";
+
+export const handler: MiddlewareHandler<AuthenticatedState>[] = [
+  /**
+   * Check if user is authenticated and add session to context accordingly.
+   * @param request The HTTP incomming request.
+   * @param context The Fresh context object with custom `AuthenticatedState`.
+   * @returns The response from the next middleware.
+   */
+  async function checkAuthentication(
+    request: Request,
+    context: FreshContext<AuthenticatedState>,
+  ): Promise<Response> {
+    const pathname = new URL(request.url).pathname;
+    const currentApp = pathname.split("/")[1];
+    const properties: AppProperties = (await import(
+      `./${currentApp}/(_props)/props.ts`
+    )).default;
+
+    context.state.availablePages = properties.pages;
+    if (
+      context.state.session.eduPersonPrimaryAffiliation == "student" &&
+      Deno.env.get("LOCAL") != "true"
+    ) {
+      properties.adminOnly.forEach((page) =>
+        delete context.state.availablePages[page]
+      );
+    }
+
+    return await context.next();
+  },
+];