Enhance PR preview workflow with cleanup on close

Added cleanup step for PR preview on close and updated event types.

Signed-off-by: Rajesh Nagarajan <139469505+Rajesh-Nagarajan-11@users.noreply.github.com>

Author: Rajesh-Nagarajan-11

.github/workflows/deploy-preview.yml

@@ -4,7 +4,7 @@ name: preview-deploy
 on:
   pull_request_target:
     branches: [ "master" ]
-    types: [opened, synchronize, reopened]
+    types: [opened, synchronize, reopened, closed]
 
   workflow_dispatch:
 
@@ -24,53 +24,56 @@ defaults:
     shell: bash
 
 jobs:
-  # Build and Deploy job
   build-and-deploy:
     runs-on: ubuntu-latest
     env:
       HUGO_VERSION: 0.147.9
+
     steps:
       - name: Install Hugo CLI
+        if: github.event.action != 'closed'
         run: |
           wget -O ${{ runner.temp }}/hugo.deb https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_linux-amd64.deb \
-          && sudo dpkg -i ${{ runner.temp }}/hugo.deb          
+          && sudo dpkg -i ${{ runner.temp }}/hugo.deb
+
       - name: Install Dart Sass
+        if: github.event.action != 'closed'
         run: sudo snap install dart-sass
 
       - name: Checkout
+        if: github.event.action != 'closed'
         uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           submodules: recursive
           fetch-depth: 0
 
       - name: Install Node.js dependencies
+        if: github.event.action != 'closed'
         run: "[[ -f package-lock.json || -f npm-shrinkwrap.json ]] && npm ci || true"
 
       - name: Build with Hugo
+        if: github.event.action != 'closed'
         env:
-          # For maximum backward compatibility with Hugo modules
           HUGO_ENVIRONMENT: production
           HUGO_ENV: production
         run: |
-          # Dynamically set BaseURL for PR preview
-          # Format: https://<ORG>.github.io/<REPO>/pr-preview/pr-<NUMBER>/
-          # We use github context to make it generic
           REPO_NAME=$(echo "${{ github.repository }}" | cut -d'/' -f2)
           ORG_NAME=$(echo "${{ github.repository }}" | cut -d'/' -f1)
-          
+
           PR_BASE_URL="https://${ORG_NAME}.github.io/${REPO_NAME}/pr-preview/pr-${{ github.event.pull_request.number }}/"
-          
+
           echo "Building for BaseURL: ${PR_BASE_URL}"
-          
+
           hugo \
             --gc \
             --minify \
             --buildDrafts \
             --buildFuture \
-            --baseURL "${PR_BASE_URL}"          
-          
+            --baseURL "${PR_BASE_URL}"
+
       - name: Deploy PR Preview
+        if: github.event.action != 'closed'
         id: deploy-preview
         uses: rossjrw/pr-preview-action@v1.6.3
         with:
@@ -81,8 +84,8 @@ jobs:
           comment: false
 
       - name: Comment PR with Preview URL
+        if: github.event.action != 'closed'
         uses: marocchino/sticky-pull-request-comment@v2
-        if: github.event_name == 'pull_request_target'
         with:
           header: pr-preview
           message: |
@@ -91,3 +94,11 @@ jobs:
             🌐 **Preview URL**: ${{ steps.deploy-preview.outputs.preview-url }}
             
             _This preview will be updated automatically when you push new commits to this PR._
+
+      - name: Cleanup PR Preview on Close
+        if: github.event.action == 'closed'
+        uses: rossjrw/pr-preview-action@v1.6.3
+        with:
+          preview-branch: gh-pages
+          umbrella-dir: pr-preview
+          action: remove