python.yml

name: Python CI/CD

on:
  push:
    branches: ['**']
    tags-ignore: ['**']
  pull_request:
  release:
    types:
      - published

jobs:

  build_sdist:
    name: Build source distribution
    runs-on: ubuntu-20.04

    steps:

      - uses: actions/checkout@master
      - run: git fetch --prune --unshallow

      - name: Install Python
        uses: actions/setup-python@v2
        with:
          python-version: 3.8
          
      - name: Make sure to use an updated pip
        run: python -m pip install --upgrade pip

      - name: Install pypa/build
        run: pip install build

      - name: Build sdist
        run: python -m build --sdist --outdir dist/ tools/pip

      - name: Install sdist
        run: pip -v install dist/ycm_cmake_modules-*.tar.gz

      - name: Test import
        run: python -c 'import ycm_cmake_modules'

      - name: Remove external wheels
        run: find dist/ -type f -not -name 'ycm_cmake_modules-*' -delete -print

      - name: Inspect dist folder
        run: ls -lah dist/

      - uses: actions/upload-artifact@v2
        with:
          name: dist
          path: dist/*.tar.gz

  build_wheel:
    name: Build wheel
    runs-on: ubuntu-20.04

    steps:

      - uses: actions/checkout@master
      - run: git fetch --prune --unshallow

      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          python-version: 3.8

      - name: Install pypa/build
        run: pip install build

      - name: Build wheel
        run: python -m build --wheel --outdir dist/ tools/pip

      - name: Remove external wheels
        run: find dist/ -type f -not -name 'ycm_cmake_modules-*' -delete -print

      # setuptools thinks that the package is OS-dependent because it uses a
      # build extension, but instead it does not contain any compiled code.
      - name: Rename wheel
        run: |
          sudo apt update
          sudo apt install -y rename
          find . -type f -name "*.whl" -exec rename -v "s/cp(\d)(\d)-cp(\d)(\d)-linux_x86_64/py3-none-any/g" {} +

      - name: Install wheel
        run: pip install dist/ycm_cmake_modules-*.whl

      - name: Test import
        run: python -c 'import ycm_cmake_modules'

      - name: Inspect dist folder
        run: ls -lah dist/

      - uses: actions/upload-artifact@v2
        with:
          name: dist
          path: ./dist/*.whl

  upload_pypi:
    needs:
      - build_sdist
      - build_wheel
    runs-on: ubuntu-latest
    # Branch master produces pre-releases.
    # GitHub Releases 'vX.Y.Z' produce stable releases.

    steps:

      - uses: actions/checkout@master
      - run: git fetch --prune --unshallow    

      - uses: actions/download-artifact@v2
        with:
          name: dist
          path: dist

      - name: Inspect dist folder
        run: ls -lah dist/

      # Validate the tag accordingly to PEP440
      # From https://stackoverflow.com/a/37972030/12150968
      - name: Check PEP440 compliance
        if: github.event_name == 'release'
        run: |
          sudo apt-get update
          sudo apt-get install -y source-highlight
          last_tag_with_v="$(git describe --abbrev=0 --tags)"
          last_tag=${last_tag_with_v#v}
          rel_regexp='^(\d+!)?(\d+)(\.\d+)+([\.\-\_])?((a(lpha)?|b(eta)?|c|r(c|ev)?|pre(view)?)\d*)?(\.?(post|dev)\d*)?$'
          echo ""
          echo $last_tag
          echo ""
          check-regexp ${rel_regexp} ${last_tag}
          match=$(check-regexp ${rel_regexp} ${last_tag} | grep matches | cut -d ' ' -f 5)
          test $match -eq 1 && true

      - uses: pypa/gh-action-pypi-publish@master
        if: |
          github.repository == 'robotology/ycm' &&
          ((github.event_name == 'release' && github.event.action == 'published') ||
           (github.event_name == 'push' && github.ref == 'refs/heads/master'))
        with:
          user: __token__
          password: ${{ secrets.PYPI_TOKEN }}
          skip_existing: true