python-package.yml

name: Python package

on:
  push:
    branches: ["release"]
    tags: ["v*"]
  pull_request:
    branches: ["release"]
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python 3.12
        uses: actions/setup-python@v3
        with:
          python-version: "3.12"

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          python -m pip install flake8 pytest
          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi

      - name: Lint with flake8
        run: |
          # Stop the build on syntax errors or undefined names
          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
          # Treat all other errors as warnings
          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

  publish:
    if: startsWith(github.ref, 'refs/tags/v')
    needs: build
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python 3.12
        uses: actions/setup-python@v3
        with:
          python-version: "3.12"

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi

      - name: Install wheel & twine
        run: |
          python -m pip install wheel twine

      - name: Extract and validate version from tag
        id: get_version
        run: |
          # Extract version from tag (remove 'v' prefix)
          VERSION=${GITHUB_REF#refs/tags/v}
          
          # Validate version format (allows for alpha/beta versions)
          if ! [[ $VERSION =~ ^[0-9]+\.[0-9]+\.[0-9]+(a|b|rc)?[0-9]*$ ]]; then
            echo "Error: Invalid version format. Expected format: X.Y.Z[a|b|rc]N (e.g., 0.1.0a1)"
            exit 1
          fi
          
          echo "VERSION=$VERSION" >> $GITHUB_ENV
          echo "Using version: $VERSION"

      - name: Update version in setup.py
        run: |
          # Update the version in setup.py dynamically
          sed -i "s/version='[^']*'/version='$VERSION'/" setup.py
          echo "Updated setup.py with version: $VERSION"
          grep "version=" setup.py

      - name: Build package
        run: |
          python setup.py sdist bdist_wheel

      - name: Publish to PyPI
        run: |
          twine upload --skip-existing dist/*
        env:
          TWINE_USERNAME: ${{ secrets.TWINE_USERNAME }}
          TWINE_PASSWORD: ${{ secrets.TWINE_PASSWORD }}