check-labels.yml

name: Check labels

on:
  workflow_call:
    secrets:
      github-token:
        required: true

jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - name: Check Labels
        shell: python
        run: |
          import json
          import os
          import subprocess

          required_labels = set(["breaking-change", "bug", "dependencies", "documentation", "enhancement", "new feature", "internal"])

          out = subprocess.check_output(["gh", "pr", "view", "${{ github.event.pull_request.number }}", "--json", "labels", "--repo", "${{ github.repository }}"])
          pr_labels = set([label["name"] for label in json.loads(out).get("labels")])

          if pr_labels.intersection(required_labels):
              exit(0)
          subprocess.run(["gh", "pr", "comment", "--repo", "${{ github.repository }}", "${{ github.event.pull_request.number }}", "-b", f"PR missing one of the required labels: **{required_labels}**"])
          exit(1)
        env:
          GH_TOKEN: ${{ secrets.github-token }}