pr-auto-label.yml

name: "Automatically mark PRs to sync"

on:
  pull_request:
    types:
      - opened

jobs:
  labeler:
    if: github.event.pull_request.user.type != 'Bot'
    permissions:
      pull-requests: write

    runs-on: ubuntu-latest
    steps:
      - name: Add "sync" label to PR
        run: gh pr edit "$PR_URL" --add-label sync --repo "$PR_REPO"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_URL: ${{ github.event.pull_request.html_url }}
          PR_REPO: ${{ github.repository }}

      - name: Comment on PR to explain sync label
        run: gh pr comment "$PR_URL" --body "This pull request has been marked to **automatically sync** to its base branch. You can **disable** this behavior by removing the `sync` label." --repo "$PR_REPO"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_URL: ${{ github.event.pull_request.html_url }}
          PR_REPO: ${{ github.repository }}