binary-size-comment.yml

name: Binary Size Check - Comment

on:
  workflow_run:
    workflows: ["Binary Size Check - Build"]
    types:
      - completed

env:
  CI: 1

jobs:
  comment-on-pr:
    name: Comment on PR
    runs-on: ubuntu-latest
    # This workflow needs write permissions to comment on PRs
    # It's safe because it doesn't execute any code from the PR
    permissions:
      pull-requests: write
      contents: read
    # Only run on successful builds
    if: github.event.workflow_run.conclusion == 'success'
    steps:
      - name: Download artifact
        uses: actions/download-artifact@v4
        with:
          name: size-report
          github-token: ${{ secrets.GITHUB_TOKEN }}
          run-id: ${{ github.event.workflow_run.id }}

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

      - name: Find existing comment
        uses: peter-evans/find-comment@v3
        id: find-comment
        with:
          issue-number: ${{ steps.pr.outputs.number }}
          comment-author: "github-actions[bot]"
          body-includes: "## Binary Sizes"

      - name: Create or update PR comment
        uses: peter-evans/create-or-update-comment@v4
        with:
          comment-id: ${{ steps.find-comment.outputs.comment-id }}
          issue-number: ${{ steps.pr.outputs.number }}
          body-path: size_report.md
          edit-mode: replace