name: Metrics Comment

on:
  workflow_run:
    workflows: ["Build"]
    types:
      - completed

jobs:
  post-comment:
    runs-on: ubuntu-latest
    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success'
    permissions:
      actions: read
      pull-requests: write
    steps:
      - name: Download Artifacts
        uses: actions/download-artifact@v4
        with:
          run-id: ${{ github.event.workflow_run.id }}
          github-token: ${{ secrets.GITHUB_TOKEN }}
          name: metrics-comment

      - name: Read PR Number
        id: pr_number
        run: |
          if [ -f pr_number.txt ]; then
            echo "number=$(cat pr_number.txt)" >> $GITHUB_OUTPUT
          fi

      - name: Post Code Metrics as PR Comment
        if: steps.pr_number.outputs.number != ''
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          header: code-metrics
          path: metrics_compare.md
          number: ${{ steps.pr_number.outputs.number }}