name: lint

on:
  workflow_dispatch:
  push:
    branches:
      - main
  pull_request:
    branches:
      - "**"
    paths-ignore:
      - "docs/**"

concurrency:
  group: build-lint-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

jobs:
  autopep8:
    name: "Formatting lints"
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repo
        uses: actions/checkout@v4
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.10'
      - name: Setup virtual environment
        run: |
          python -m venv .venv
      - name: Install development Python dependencies
        run: |
          source .venv/bin/activate
          python -m pip install --upgrade pip
          pip install -r dev-requirements.txt
      - name: autopep8
        id: autopep8
        run: |
          source .venv/bin/activate
          autopep8 --max-line-length 100 --exit-code -r -d --exclude "*_pb2.py" -a -a src/
      - name: Fail if autopep8 requires changes
        if: steps.autopep8.outputs.exit-code == 2
        run: exit 1