python-lint.yml

name: Python Lint

permissions:
  contents: read

on:
  pull_request:
    paths:
      - "**.py"
      - "requirements.txt"
      - ".github/workflows/python-lint.yml"
  push:
    branches:
      - main
      - master
    paths:
      - "**.py"
      - "requirements.txt"
      - ".github/workflows/python-lint.yml"

jobs:
  lint:
    name: Python Linting
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["3.9", "3.10", "3.11", "3.12"]
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}
          cache: 'pip'

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt
          pip install flake8 black isort mypy pylint

      - name: Run Black (format check)
        run: black --check --diff app.py
        continue-on-error: true

      - name: Run isort (import sorting)
        run: isort --check-only --diff app.py
        continue-on-error: true

      - name: Run Flake8 (style guide)
        run: |
          # Stop the build if there are Python syntax errors or undefined names
          flake8 app.py --count --select=E9,F63,F7,F82 --show-source --statistics
          # Exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
          flake8 app.py --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

      - name: Run Pylint
        run: pylint app.py --exit-zero --max-line-length=127
        continue-on-error: true

      - name: Run MyPy (type checking)
        run: mypy app.py --ignore-missing-imports
        continue-on-error: true