comment-bundle-size.yaml

name: Comment Bundle Size

# Runs when Measure Bundle Size workflow completes.
# This will run with full privileges.
on:
  workflow_run:
    workflows: [Measure Bundle Size]
    types: [completed]

jobs:
  comment:
    runs-on: ubuntu-latest
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    steps:
      - name: Download report artifact
        uses: actions/download-artifact@v7
        with:
          name: bundle-report
          path: artifact
          run-id: ${{ github.event.workflow_run.id }}
          github-token: ${{ secrets.SHAKA_BOT_TOKEN }}

      - name: Add or Update PR Comment
        shell: bash
        env:
          GITHUB_TOKEN: ${{ secrets.SHAKA_BOT_TOKEN }}
          COMMENT_INCLUDES: "Bundle Size Report"
          COMMENT_USER: "shaka-bot"
        run: |
          MESSAGE=$(cat artifact/report.md)
          echo "$MESSAGE"
          PR_NUMBER=$(echo "$MESSAGE" | head -1 | grep -oE "[0-9]+")
          echo "PR_NUMBER: $PR_NUMBER"

          # Find existing bot comment
          jq_filter=".[] | select((.user.login == \"$COMMENT_USER\") and (.body | startswith(\"$COMMENT_INCLUDES\"))) | .id"

          gh api \
            /repos/${{ github.repository }}/issues/$PR_NUMBER/comments \
            | jq "$jq_filter" > old-comment-id

          if [[ -z "$(cat old-comment-id)" ]]; then
            echo "Creating new bundle size comment"
            gh api \
              --method POST \
              /repos/${{ github.repository }}/issues/$PR_NUMBER/comments \
              -f "body=$MESSAGE"
          else
            echo "Updating existing bundle size comment"
            gh api \
              --method PATCH \
              /repos/${{ github.repository }}/issues/comments/$(cat old-comment-id) \
              -f "body=$MESSAGE"
          fi