lint_pr.yml

name: lint_python
on: [pull_request, push]
jobs:
  lint_python:
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0  # To get all history for git diff commands
          
      - uses: actions/setup-python@v4
        with:
          python-version: 3.12
          
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements-dev.txt
          
      - name: Get changed Python files
        id: changed-files
        run: |
          if [ "${{ github.event_name }}" == "pull_request" ]; then
            # For PRs, compare against base branch
            CHANGED_FILES=$(git diff --name-only --diff-filter=ACMRT origin/${{ github.base_ref }} HEAD | grep '\.py$' || echo "")
          else
            # For pushes, use the before/after SHAs
            CHANGED_FILES=$(git diff --name-only --diff-filter=ACMRT ${{ github.event.before }} ${{ github.event.after }} | grep '\.py$' || echo "")
          fi
          echo "files=$CHANGED_FILES" >> $GITHUB_OUTPUT
          echo "Changed Python files: $CHANGED_FILES"
          
      - name: Lint with flake8
        if: ${{ steps.changed-files.outputs.files != '' }}
        run: |
          echo "Linting files: ${{ steps.changed-files.outputs.files }}"
          flake8 ${{ steps.changed-files.outputs.files }} --count --show-source --statistics
        continue-on-error: true
        
      - name: Format check with isort and black
        if: ${{ steps.changed-files.outputs.files != '' }}
        run: |
          echo "Checking format with isort for: ${{ steps.changed-files.outputs.files }}"
          isort --profile black --check ${{ steps.changed-files.outputs.files }}
          echo "Checking format with black for: ${{ steps.changed-files.outputs.files }}"
          black --check ${{ steps.changed-files.outputs.files }}
        continue-on-error: true
        
      - name: Type check with mypy
        if: ${{ steps.changed-files.outputs.files != '' }}
        run: |
          echo "Type checking: ${{ steps.changed-files.outputs.files }}"
          mypy --ignore-missing-imports ${{ steps.changed-files.outputs.files }}
        continue-on-error: true
        
      - name: Run tests with pytest
        run: |
          pytest ./patterns
          pytest --doctest-modules ./patterns || true
        continue-on-error: true
        
      - name: Check Python version compatibility
        if: ${{ steps.changed-files.outputs.files != '' }}
        run: pyupgrade --py312-plus ${{ steps.changed-files.outputs.files }}
        continue-on-error: true
        
      - name: Run tox
        run: tox
        continue-on-error: true