ci.yml

name: CI

on:
  push:
    branches: ["main", "master"]
  pull_request:
    branches: ["main", "master"]

jobs:
  lint:
    name: Lint & Syntax Check
    runs-on: ubuntu-latest
    permissions:
      contents: read
    strategy:
      matrix:
        python-version: ["3.10", "3.11", "3.12"]

    steps:
      - name: Checkout repository
        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 flake8
          pip install -r requirements.txt

      - name: Lint with flake8
        run: |
          # Stop the build if there are Python syntax errors or undefined names
          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
          # Treat all other issues as warnings (exit-zero keeps the build green)
          flake8 . --count --exit-zero --max-line-length=120 --statistics

      - name: Verify import syntax
        run: python -c "import ast, sys; ast.parse(open('cyberchess.py').read()); print('Syntax OK')"