release_package.yml

name: Publish to PyPI

on:
  push:
    branches:
      - main 

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          python-version: 3.x 

      - name: Check if Python package already exists
        run: |
          pip install PolyPhyPy==$(cat pyproject.toml | head -3 | tail -1 | cut -d '"' -f 2) && echo "true" > ./flag || echo "false" > ./flag

      - name: Build and publish package
        env:
          TWINE_USERNAME: ${{ secrets.TWINE_USERNAME }}
          TWINE_PASSWORD: ${{ secrets.TWINE_PASSWORD }}
        run: |
          if grep -qF false ./flag; then
            python3 -m pip install --upgrade build
            python3 -m build
            python3 -m pip install --upgrade twine
            python3 -m twine upload dist/*
            echo "New version is live!!!"
          else
            echo "Not publishing as the above version already exists!"
          fi