comment-on-pr.yaml

# This PR runs separately fron the workflow that generates PR info.
# In this way, we get info from PRs from forked repositories
# without granting them  extra permissions,
# but still allowing us to comment on the PRs.
name: Comment on PR
on:
  workflow_run:
    workflows: [Get PR URL, dependent jobs]
    types:
      - completed

jobs:
  comment:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Download info on PR
        uses: dawidd6/action-download-artifact@v2
        with:
          workflow: pr-url-and-dependent.yaml
          workflow_conclusion: completed
          name: pr-info

      - name: Get PR number
        id: pr_number
        run: |
          PR_NUMBER=$(cat pr_number.txt)
          echo "PR number is $PR_NUMBER"
          echo "pr_number=$PR_NUMBER" >> $GITHUB_OUTPUT

      - name: Post PR comment
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          number: ${{ steps.pr_number.outputs.pr_number }}
          path: pr_comment.txt