lint-changed-files.yml

name: lint-changed-files
on:
  push:
    branches:
      - main
      - develop
  workflow_dispatch: {}
  pull_request:
    branches:
      - main
      - develop

jobs:
  lint:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v3
      
      - name: Set up Python 3.10
        uses: actions/setup-python@v3
        with:
          python-version: "3.10"
      
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install black

      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v23.1

      - name: List all changed files and lint them
        run: |
          for file in ${{ steps.changed-files.outputs.all_changed_files }} ; do
            # check if file is python file
            if [[ ${file} == *.py ]]; then
              black --check ${file}
            fi
          done