From 157c8a71c1e5e1e8345c8db612b146a9ec85cca3 Mon Sep 17 00:00:00 2001
From: Nils Schimmelmann <nschimme@gmail.com>
Date: Sat, 9 May 2026 21:50:47 -0500
Subject: [PATCH] fix: use github.io base path for PR preview deployment URLs

Replace CNAME-reading logic with configure-pages base_path so PR preview
"View Deployment" links correctly point to /pr-N/ for both the main org
(which GitHub auto-redirects to the custom domain) and forked repos.
---
 .github/workflows/deploy.yml     | 17 +++--------------
 .github/workflows/pr-preview.yml |  8 ++------
 2 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 4c25032..6744385 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -187,22 +187,11 @@ jobs:
 
                 const owner = context.repo.owner;
                 const repo = context.repo.repo;
-                let baseUrlPath = process.env.BASE_URL_PATH;
+                const baseUrlPath = process.env.BASE_URL_PATH;
 
                 let base = `https://${owner}.github.io`;
-
-                const cnamePath = 'CNAME';
-                if (fs.existsSync(cnamePath) && owner === 'mume') {
-                  const domain = fs.readFileSync(cnamePath, 'utf8').trim();
-                  if (domain) {
-                    base = `https://${domain}`;
-                  }
-                } else {
-                  const repo = context.repo.repo;
-                  if (repo !== `${owner}.github.io`) {
-                    base = `${base}/${repo}`;
-                  }
-                }
+                const normalizedPath = baseUrlPath.startsWith('/') ? baseUrlPath : `/${baseUrlPath}`;
+                base = `${base}${normalizedPath}`.replace(/\/$/, '');
 
                 const url = `${base}/pr-${pr.number}/`;
                 console.log(`Deployment URL for PR #${pr.number}: ${url}`);
diff --git a/.github/workflows/pr-preview.yml b/.github/workflows/pr-preview.yml
index c8527b2..ddc1fbb 100644
--- a/.github/workflows/pr-preview.yml
+++ b/.github/workflows/pr-preview.yml
@@ -29,16 +29,12 @@ jobs:
       - name: Determine Base URL Prefix
         id: base_url
         run: |
-          if [ -f CNAME ] && [ "${{ github.repository_owner }}" = "mume" ]; then
+          if [ "${{ github.event.repository.name }}" = "${{ github.repository_owner }}.github.io" ]; then
             echo "prefix=/" >> $GITHUB_OUTPUT
-            echo "host=$(cat CNAME)" >> $GITHUB_OUTPUT
-          elif [ "${{ github.event.repository.name }}" = "${{ github.repository_owner }}.github.io" ]; then
-            echo "prefix=/" >> $GITHUB_OUTPUT
-            echo "host=${{ github.repository_owner }}.github.io" >> $GITHUB_OUTPUT
           else
             echo "prefix=/${{ github.event.repository.name }}/" >> $GITHUB_OUTPUT
-            echo "host=${{ github.repository_owner }}.github.io" >> $GITHUB_OUTPUT
           fi
+          echo "host=${{ github.repository_owner }}.github.io" >> $GITHUB_OUTPUT
 
       - name: Setup environment
         run: ./scripts/ci-env.sh