pr-comment.yml

name: PR Check Comment

on:
  workflow_run:
    workflows: ["PR Check"]
    types: [completed]

jobs:
  comment:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - name: Download check results
        uses: actions/download-artifact@v4
        with:
          name: pr-check-output
          github-token: ${{ secrets.GITHUB_TOKEN }}
          run-id: ${{ github.event.workflow_run.id }}
        continue-on-error: true

      - name: Post or update PR comment
        if: hashFiles('pr_number.txt') != '' && hashFiles('comment.md') != ''
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: ${{ github.repository }}
        run: |
          PR_NUMBER=$(cat pr_number.txt)
          COMMENT_BODY=$(cat comment.md)

          EXISTING_ID=$(gh api "repos/$GH_REPO/issues/$PR_NUMBER/comments" \
            --jq '[.[] | select(.body | contains("<!-- pr-check-bot -->"))] | first | .id // empty')

          if [ -n "$EXISTING_ID" ]; then
            gh api --method PATCH "repos/$GH_REPO/issues/comments/$EXISTING_ID" \
              --field body="$COMMENT_BODY"
          else
            gh api --method POST "repos/$GH_REPO/issues/$PR_NUMBER/comments" \
              --field body="$COMMENT_BODY"
          fi