Update

.github/workflows/push-to-external-repo.yml

@@ -36,13 +36,35 @@ jobs:
           publish_branch: ${{ steps.branch.outputs.branch }}
           allow_empty_commit: true
 
-      - name: Generate Preview URL
-        id: preview_url
+      - name: Generate pull request comment
+        id: pr_comment
         run: |
-          preview_url="https://headless-clone-git-${{ steps.branch.outputs.branch }}-thomaskn1.vercel.app"
-          echo "preview_url=${preview_url}" >> $GITHUB_OUTPUT
+          if [ "${{ github.event_name }}" == "pull_request" ]; then
+            preview_url="https://headless-clone-git-${{ steps.branch.outputs.branch }}-thomaskn1.vercel.app"
+            echo "body=A preview URL is being deployed to test this PR. It should be live in a short moment: ${preview_url}" >> $GITHUB_OUTPUT
+
+      - name: Check Existing Comments
+        id: check-comments
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const existingComments = await github.issues.listComments({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo
+            });
+
+            const marker = ${{ steps.pr_comment.outputs.body }}
+            const existingComment = existingComments.data.find(comment => comment.body.includes(marker));
+            console.log(existingComment ? 'Existing comment found' : 'No existing comment found');
+
+            // Set an output to pass information to subsequent steps
+            console.log(`echo "existingCommentFound=${existingComment ? 'true' : 'false'}" >> $GITHUB_OUTPUT`);
+            console.log(`echo "existingCommentId=${existingComment ? existingComment.id : ''}" >> $GITHUB_OUTPUT`);
 
       - name: Comment on Pull Request
+        if: steps.check-comments.outputs.existingCommentFound != 'true'
         uses: actions/github-script@v7
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -51,5 +73,5 @@ jobs:
               issue_number: context.issue.number,
               owner: context.repo.owner,
               repo: context.repo.repo,
-              body: `A preview URL is being deployed to test this PR. It should be live in a short moment: ${{ steps.preview_url.outputs.preview_url }}`
+              body: `${{ steps.pr_comment.outputs.body }}`
             });