Add github action to check for redirects on rename

.github/workflows/detect-renamed-posts.js

@@ -0,0 +1,32 @@
+const fs = require('fs');
+const path = require('path');
+
+const redirectsFilePath = path.join(__dirname, '_redirects');
+const postsDirectory = path.join(__dirname, '_posts');
+
+function updateRedirects(originalName, newName) {
+  const redirects = fs.readFileSync(redirectsFilePath, 'utf-8');
+  const lines = redirects.split('\n');
+
+  const newRedirect = `/blog/${originalName} /blog/${newName}`;
+  const updatedRedirects = lines.map(line => {
+    if (line.trim() === newRedirect.trim()) {
+      return newRedirect;
+    }
+    return line;
+  }).join('\n');
+
+  fs.writeFileSync(redirectsFilePath, updatedRedirects, 'utf-8');
+}
+
+const changedFiles = JSON.parse(process.env.GITHUB_EVENT_PATH).commits[0].added.concat(
+  JSON.parse(process.env.GITHUB_EVENT_PATH).commits[0].modified
+);
+
+changedFiles.forEach(file => {
+  if (file.startsWith('_posts/')) {
+    const originalName = path.basename(file, path.extname(file));
+    const newName = path.basename(file, path.extname(file)).replace(/^\d{4}-\d{2}-\d{2}-/, '');
+    updateRedirects(originalName, newName);
+  }
+});

.github/workflows/detect-renamed-posts.yml

@@ -0,0 +1,22 @@
+name: Detect Renamed Posts
+
+on:
+
+  pull_request:
+    branches: [master]
+    paths:
+      - '_posts/**'
+
+jobs:
+  detect_renamed_post:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+
+      - name: Set Up Node.js
+        uses: actions/setup-node@v2
+
+      - name: Run Renaming Script
+        run: node .github/workflows/detect-renamed-posts.js