From 3d2348cedf7cccb5449b56aa3bedcda916ec66bc Mon Sep 17 00:00:00 2001
From: Jake Cahill <45230295+JakeSCahill@users.noreply.github.com>
Date: Tue, 27 Aug 2024 17:42:12 +0100
Subject: [PATCH] Add null redirect edge functions (#73)

* Add null redirect edge functions

* Apply suggestions from code review

Co-authored-by: Paulo Borges <paulohtb@hotmail.com>

---------

Co-authored-by: Paulo Borges <paulohtb@hotmail.com>
---
 .gitignore                              |  4 +++-
 netlify.toml                            |  4 ++++
 netlify/edge-functions/redirect-null.js | 24 ++++++++++++++++++++++++
 3 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 netlify/edge-functions/redirect-null.js

diff --git a/.gitignore b/.gitignore
index d2a26af..db84c76 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,6 @@ node_modules
 .idea
 .vscode
 /docs/
-.bundle
\ No newline at end of file
+.bundle
+# Local Netlify folder
+.netlify
diff --git a/netlify.toml b/netlify.toml
index 0bd04f0..18fdce7 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -1,6 +1,10 @@
 [build.environment]
 NODE_VERSION = "18"
 
+[dev]
+  publish = "docs/"
+  framework = "#static"
+
 [[plugins]]
   package = "@netlify/plugin-lighthouse"
 
diff --git a/netlify/edge-functions/redirect-null.js b/netlify/edge-functions/redirect-null.js
new file mode 100644
index 0000000..12c49eb
--- /dev/null
+++ b/netlify/edge-functions/redirect-null.js
@@ -0,0 +1,24 @@
+export default async (request, context) => {
+  const url = new URL(request.url);
+  const pathname = url.pathname;
+
+  if (pathname.endsWith('/null') || pathname.endsWith('/null/')) {
+    // Remove the "/null" part from the URL
+    let newPathname = pathname.replace(/\/null\/?$/, '/');
+
+    // Ensure the URL ends with a "/" for local tests
+    if (!newPathname.endsWith('/')) {
+      newPathname += '/';
+    }
+
+    // Construct the new URL without "/null"
+    const newUrl = `${url.origin}${newPathname}${url.search}`;
+
+    return Response.redirect(newUrl, 301);
+  }
+
+  return context.next();
+};
+
+// This configures the Edge Function to trigger on paths ending with "/null"
+export const config = { path: "*/null" };