add actual label-pr code

.github/workflows/label-prs.yml

@@ -1,28 +1,38 @@
-name: Auto Label PRs
+name: Label PRs "waiting for review/update"
 
 permissions:
   contents: read
   pull-requests: write
 
-
 on:
   pull_request:
-    types: [review_requested, synchronize, reopened]
+    types: [review_requested, review_requested]
+  pull_request_review:
+    types: [submitted]
   issue_comment:
     types: [created]
 
 jobs:
-  update-labels:
+  manage-labels:
     runs-on: ubuntu-latest
     steps:
-      - name: Remove 'waiting for changes' and Add 'waiting for review' label
-        uses: actions-ecosystem/action-add-labels@v1
+      - name: Set up GitHub CLI
+        uses: cli/cli@v2
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          labels: waiting for review
-
-      - name: Remove 'waiting for changes' label if exists
+
+      - name: Add 'waiting for review' label if review is requested
+        if: github.event_name == 'pull_request' && github.event.action == 'review_requested'
+        run: |
+          gh pr edit ${{ github.event.pull_request.number }} --add-label "waiting for review"
+      - name: Add 'waiting for update' label if changes are requested
+        if: github.event_name == 'pull_request_review' && github.event.review.state == 'changes_requested'
+        run: |
+          gh pr edit ${{ github.event.pull_request.number }} --add-label "waiting for update"
+      - name: Remove 'waiting for update' label if a comment is made by the author
+        if: github.event_name == 'issue_comment'
         run: |
-          if gh pr view ${{ github.event.pull_request.number }} --json labels --jq '.labels[].name' | grep -q 'waiting for changes'; then
-            gh pr edit ${{ github.event.pull_request.number }} --remove-label "waiting for changes"
-          fi
+          comment_author=$(gh pr view ${{ github.event.issue.number }} --json author --jq '.author.login')
+          if [ "$comment_author" == "${{ github.actor }}" ]; then
+            gh pr edit ${{ github.event.issue.number }} --remove-label "waiting for update"
+          fi