probe-comment.yml

name: Post Probe Comment

on:
  workflow_run:
    workflows: ["Probe"]
    types: [completed]

jobs:
  comment:
    name: Post PR Comment
    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion != 'cancelled'
    runs-on: ubuntu-latest

    permissions:
      pull-requests: write

    steps:
    - name: Check artifact exists
      id: check
      run: |
        ARTIFACTS=$(gh api repos/${{ github.repository }}/actions/runs/${{ github.event.workflow_run.id }}/artifacts --jq '.artifacts[] | select(.name == "probe-pr-comment") | .id')
        if [ -z "$ARTIFACTS" ]; then
          echo "skip=true" >> "$GITHUB_OUTPUT"
          echo "No probe-pr-comment artifact found — skipping comment."
        else
          echo "skip=false" >> "$GITHUB_OUTPUT"
        fi
      env:
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    - name: Download artifact
      if: steps.check.outputs.skip == 'false'
      uses: actions/download-artifact@v4
      with:
        name: probe-pr-comment
        run-id: ${{ github.event.workflow_run.id }}
        github-token: ${{ secrets.GITHUB_TOKEN }}

    - name: Post or update comment
      if: steps.check.outputs.skip == 'false'
      run: |
        PR_NUMBER=$(cat pr-number.txt)
        COMMENT_ID=$(gh api repos/${{ github.repository }}/issues/${PR_NUMBER}/comments \
          --jq '.[] | select(.body | contains("<!-- http11probe-results -->")) | .id' | head -1)
        if [ -n "$COMMENT_ID" ]; then
          gh api repos/${{ github.repository }}/issues/comments/$COMMENT_ID \
            -X PATCH -f body="$(cat probe-comment.md)"
        else
          gh pr comment "$PR_NUMBER" --body-file probe-comment.md --repo "${{ github.repository }}"
        fi
      env:
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}