From 8e8f03532f470269e8cdda3f3bcfbbae15fbe235 Mon Sep 17 00:00:00 2001
From: Chris Swithinbank <swithinbank@gmail.com>
Date: Fri, 10 Nov 2023 23:07:14 +0100
Subject: [PATCH] Migrate docs site to Vercel (#795)

Co-authored-by: Tony Sullivan <tony.f.sullivan@outlook.com>
---
 .gitignore             |  3 +++
 docs/astro.config.mjs  |  9 +++++++--
 docs/public/_headers   |  4 ----
 docs/public/_redirects |  3 ---
 docs/vercel.json       | 22 ++++++++++++++++++++++
 5 files changed, 32 insertions(+), 9 deletions(-)
 delete mode 100644 docs/public/_headers
 delete mode 100644 docs/public/_redirects
 create mode 100644 docs/vercel.json

diff --git a/.gitignore b/.gitignore
index 9f880cb7098..e790eb4de4e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,6 @@ pnpm-debug.log*
 
 # Vitest
 __coverage__/
+
+# Vercel output
+.vercel
\ No newline at end of file
diff --git a/docs/astro.config.mjs b/docs/astro.config.mjs
index 37ecec8bd16..2405fd09de4 100644
--- a/docs/astro.config.mjs
+++ b/docs/astro.config.mjs
@@ -16,7 +16,13 @@ export const locales = {
 	ru: { label: 'Русский', lang: 'ru' },
 };
 
-const site = 'https://starlight.astro.build/';
+/* https://vercel.com/docs/projects/environment-variables/system-environment-variables#system-environment-variables */
+const VERCEL_PREVIEW_SITE =
+	process.env.VERCEL_ENV !== 'production' &&
+	process.env.VERCEL_URL &&
+	`https://${process.env.VERCEL_URL}`;
+
+const site = VERCEL_PREVIEW_SITE || 'https://starlight.astro.build/';
 
 export default defineConfig({
 	site,
@@ -175,7 +181,6 @@ export default defineConfig({
 					autogenerate: { directory: 'reference' },
 				},
 			],
-			lastUpdated: true,
 		}),
 	],
 });
diff --git a/docs/public/_headers b/docs/public/_headers
deleted file mode 100644
index aaa51ef2a6e..00000000000
--- a/docs/public/_headers
+++ /dev/null
@@ -1,4 +0,0 @@
-/_astro/*
-  Cache-Control: public
-  Cache-Control: max-age=604800
-  Cache-Control: immutable
diff --git a/docs/public/_redirects b/docs/public/_redirects
deleted file mode 100644
index a7aa40820f3..00000000000
--- a/docs/public/_redirects
+++ /dev/null
@@ -1,3 +0,0 @@
-/ph/*        https://astro-houston-ph.pages.dev/ph/:splat  200
-/zh/*       /zh-cn/:splat
-/:lang/*    /:lang/404/   404
diff --git a/docs/vercel.json b/docs/vercel.json
new file mode 100644
index 00000000000..e5259e57302
--- /dev/null
+++ b/docs/vercel.json
@@ -0,0 +1,22 @@
+{
+  "$schema": "https://openapi.vercel.sh/vercel.json",
+
+  "routes": [
+    {
+      "src": "^/_astro/(.*)$",
+      "headers": { "cache-control": "public, max-age=31536000, immutable" },
+      "continue": true
+    },
+
+    { "src": "/(ph$|ph/)(.*)", "dest": "https://astro-houston-ph.pages.dev/ph/$2" },
+
+    { "src": "(.*)/([^./]+)$", "dest": "$1/$2/", "status": 301 },
+    { "src": "(.*)/index.html$", "dest": "$1/", "status": 301 },
+
+    { "handle": "filesystem" },
+
+    { "src": "/zh/(.*)", "dest": "/zh-cn/$1", "status": 301 },
+
+    { "src": "/(?<lang>[^/]*)/(.*)", "dest": "/$lang/404/", "status": 404 }
+  ]
+}