Add finding existing comments to preview deployment workflow

.github/workflows/preview-site.yml

@@ -34,16 +34,51 @@ jobs:
           projectName: ${{ vars.CLOUDFLARE_PROJECT_NAME }}
           directory: 'public/'
           branch: ${{ github.event.pull_request.head.ref }}
-      - name: Comment on PR
+      - name: Echo all outputs of cloudflare/pages-action
+        run: echo "${{ toJson(steps.deploy.outputs) }}"
+
+      - name: Find Comment
+        uses: peter-evans/find-comment@v3
+        id: fc
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: preview environment
+
+      - name: Create comment
+        if: steps.fc.outputs.comment-id == ''
         uses: peter-evans/create-or-update-comment@v4
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           issue-number: ${{ github.event.pull_request.number }}
           body: |
-            :sparkles: Your changes have been deployed to a preview environment! :sparkles:
-            Please visit ${{ steps.deploy.outputs.alias }}) to see how your changes are reflected on the site.
-            Please verify everything looks as expected. Thank you for your contribution :rocket:!
+            ###  :eyes:  Preview Environment :eyes: 
+            
+            Your changes have been successfully deployed to a preview environment! :tada:
+            
+            :heavy_check_mark:   We kindly ask you to visit this **[LINK](${{ steps.deploy.outputs.alias }})** to verify that everything looks as expected.  :heavy_check_mark:
+            
+            _Your contribution is greatly appreciated! :rocket:_
+          reactions: rocket
+
+      - name: Update comment
+        if: steps.fc.outputs.comment-id != ''
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-id: ${{ steps.fc.outputs.comment-id }}
+          body: |
+            ###  :eyes:  Preview Environment :eyes: 
+
+            Your changes have been successfully deployed to a preview environment! :tada:
+            
+            :heavy_check_mark:   We kindly ask you to visit this **[LINK](${{ steps.deploy.outputs.alias }})** to verify that everything looks as expected.  :heavy_check_mark:
+
+            _Your contribution is greatly appreciated! :rocket:_
+          reactions: hooray
           edit-mode: 'replace'
+
       - name: Remove Label
         uses: actions/github-script@v5
         with: