From c506bfdfc038d2c453e3bde01cb7caeeea378b9c Mon Sep 17 00:00:00 2001
From: HiDeoo <494699+HiDeoo@users.noreply.github.com>
Date: Sat, 11 May 2024 20:00:42 +0200
Subject: [PATCH] feat: adds a social link to Starlight for the blog RSS feed

---
 packages/starlight-blog/index.ts               | 18 +++++++++++++++---
 packages/starlight-blog/tests/e2e/blog.test.ts |  2 +-
 packages/starlight-blog/tests/e2e/rss.test.ts  |  7 +++++++
 3 files changed, 23 insertions(+), 4 deletions(-)
 create mode 100644 packages/starlight-blog/tests/e2e/rss.test.ts

diff --git a/packages/starlight-blog/index.ts b/packages/starlight-blog/index.ts
index 5537e3b..ceeaccd 100644
--- a/packages/starlight-blog/index.ts
+++ b/packages/starlight-blog/index.ts
@@ -15,6 +15,12 @@ export default function starlightBlogPlugin(userConfig?: StarlightBlogUserConfig
     name: 'starlight-blog-plugin',
     hooks: {
       setup({ addIntegration, astroConfig, config: starlightConfig, logger, updateConfig: updateStarlightConfig }) {
+        const rssLink = astroConfig.site
+          ? `${stripTrailingSlash(astroConfig.site)}${stripTrailingSlash(astroConfig.base)}/${stripLeadingSlash(
+              stripTrailingSlash(config.prefix),
+            )}/rss.xml`
+          : undefined
+
         updateStarlightConfig({
           components: {
             ...starlightConfig.components,
@@ -29,9 +35,7 @@ export default function starlightBlogPlugin(userConfig?: StarlightBlogUserConfig
                   {
                     tag: 'link' as const,
                     attrs: {
-                      href: `${stripTrailingSlash(astroConfig.site)}${stripTrailingSlash(
-                        astroConfig.base,
-                      )}/${stripLeadingSlash(stripTrailingSlash(config.prefix))}/rss.xml`,
+                      href: rssLink,
                       rel: 'alternate',
                       title: config.title,
                       type: 'application/rss+xml',
@@ -40,6 +44,14 @@ export default function starlightBlogPlugin(userConfig?: StarlightBlogUserConfig
                 ]
               : []),
           ],
+          social: {
+            ...starlightConfig.social,
+            ...(astroConfig.site && rssLink && !starlightConfig.social?.rss
+              ? {
+                  rss: rssLink,
+                }
+              : {}),
+          },
         })
 
         addIntegration({
diff --git a/packages/starlight-blog/tests/e2e/blog.test.ts b/packages/starlight-blog/tests/e2e/blog.test.ts
index 6ec3ba9..7ffc93d 100644
--- a/packages/starlight-blog/tests/e2e/blog.test.ts
+++ b/packages/starlight-blog/tests/e2e/blog.test.ts
@@ -195,7 +195,7 @@ test('should not list draft blog posts in production', async ({ blogPage }) => {
 test('should add a link to the RSS feed in the sidebar', async ({ blogPage }) => {
   await blogPage.goto()
 
-  const link = blogPage.page.getByRole('link', { name: 'RSS' })
+  const link = blogPage.page.getByLabel('Main').getByRole('link', { name: 'RSS' })
 
   await expect(link).toBeVisible()
   expect(await link.getAttribute('href')).toBe('/blog/rss.xml')
diff --git a/packages/starlight-blog/tests/e2e/rss.test.ts b/packages/starlight-blog/tests/e2e/rss.test.ts
new file mode 100644
index 0000000..febda0d
--- /dev/null
+++ b/packages/starlight-blog/tests/e2e/rss.test.ts
@@ -0,0 +1,7 @@
+import { expect, test } from './test'
+
+test('should add a Starlight social link to the RSS feed', async ({ blogPage }) => {
+  await blogPage.goto()
+
+  await expect(blogPage.page.getByRole('banner').getByRole('link', { name: 'RSS' })).toBeVisible()
+})