spaCy/.github/workflows/autoblack.yml

# GitHub Action that uses Black to reformat all Python code and submits a PR
# in regular intervals. Inspired by: https://github.com/cclauss/autoblack

name: autoblack
on:
  workflow_dispatch:  # allow manual trigger
  schedule:
    cron: '0 8 * * 5'  # every Friday at 8am UTC

jobs:
  autoblack:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
            ref: ${{ github.head_ref }}
      - uses: actions/setup-python@v2
      - run: pip install black
      - name: Auto-format code if needed
        run: black spacy
      # We can't run black --check here because that returns a non-zero excit
      # code and makes GitHub think the action failed
      - name: Check for modified files
        id: git-check
        run: echo ::set-output name=modified::$(if git diff-index --quiet HEAD --; then echo "false"; else echo "true"; fi)
      - name: Create Pull Request
        if: steps.git-check.outputs.modified == 'true'
        uses: peter-evans/create-pull-request@v3
        with:
            title: Auto-format code with black
            labels: meta
            commit-message: Auto-format code with black
            committer: GitHub <noreply@github.com>
            author: explosion-bot <explosion-bot@users.noreply.github.com>
            body: _This PR is auto-generated._
            branch: autoblack
            delete-branch: true
            draft: false
      - name: Check outputs
        if: steps.git-check.outputs.modified == 'true'
        run: |
          echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"
          echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"