pypi.yml

name: Publish Python Package

on:
  push:
    branches:
      - main
    paths:
      - 'setup.py'

jobs:
  check-version-changed:
    runs-on: ubuntu-latest
    outputs:
      version_changed: ${{ steps.version-change.outputs.version_changed }}
    steps:
      - name: Check out code
        uses: actions/checkout@v4
      - name: Fetch all history for all tags and branches
        run: git fetch --unshallow
      - name: Check if version changed
        id: version-change
        run: |
          # Get the latest commit on main before the merge
          MAIN_COMMIT=$(git rev-parse origin/main^1)

          # Get the version from the main branch before the merge
          MAIN_VERSION=$(git show "$MAIN_COMMIT:setup.py" | grep -Po "version='\K.*?(?=')")

          # Get the version from the latest commit on the incoming branch
          HEAD_VERSION=$(grep -Po "version='\K.*?(?=')" setup.py)

          echo "Main version: $MAIN_VERSION"
          echo "Head version: $HEAD_VERSION"

          # Compare versions
          if [ "$MAIN_VERSION" != "$HEAD_VERSION" ]; then
            echo "Version changed"
            echo "version_changed=true" >> $GITHUB_OUTPUT
          else
            echo "Version not changed"
            echo "version_changed=false" >> $GITHUB_OUTPUT
          fi

  publish:
    needs: check-version-changed
    if: needs.check-version-changed.outputs.version_changed == 'true'
    runs-on: ubuntu-latest
    steps:
      - name: Check out code
        uses: actions/checkout@v4
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.10'
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install setuptools wheel twine
      - name: Build and publish
        env:
          TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
          TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
        run: |
          python setup.py sdist bdist_wheel
          twine upload dist/*