Merge pull request #7116 from mermaid-js/sidv/lockfileValidation

fix: Lockfile validation

Author: sidharthv96

.github/workflows/validate-lockfile.yml

@@ -1,7 +1,7 @@
 name: Validate pnpm-lock.yaml
 
 on:
-  pull_request:
+  pull_request_target:
     paths:
       - 'pnpm-lock.yaml'
       - '**/package.json'
@@ -15,6 +15,8 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
+          ref: ${{ github.event.pull_request.head.sha }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
 
       - name: Set up Node.js
         uses: actions/setup-node@v4
@@ -55,16 +57,41 @@ jobs:
             exit 1
           fi
 
+      - name: Find existing lockfile validation comment
+        if: always()
+        uses: peter-evans/find-comment@v3
+        id: find-comment
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: 'Lockfile Validation Failed'
+
       - name: Comment on PR if validation failed
         if: failure()
-        uses: peter-evans/create-or-update-comment@v4
+        uses: peter-evans/create-or-update-comment@v5
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           issue-number: ${{ github.event.pull_request.number }}
+          comment-id: ${{ steps.find-comment.outputs.comment-id }}
+          edit-mode: replace
           body: |
+            ❌ **Lockfile Validation Failed**
+
             The following issue(s) were detected:
             ${{ steps.validate.outputs.errors }}
 
             Please address these and push an update.
 
             _Posted automatically by GitHub Actions_
+
+      - name: Delete comment if validation passed
+        if: success() && steps.find-comment.outputs.comment-id != ''
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            await github.rest.issues.deleteComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              comment_id: ${{ steps.find-comment.outputs.comment-id }},
+            });