wheel.yml

name: Wheel
on:
  pull_request:
    types: [ opened, synchronize, reopened ]
  push:
    branches:
      - main
  workflow_dispatch:
  release:
    types:
      - published
jobs:
  generate-wheels-matrix:
    # https://iscinumpy.dev/post/cibuildwheel-2-10-0/
    name: Generate wheels matrix
    runs-on: ubuntu-latest
    outputs:
      include: ${{ steps.set-matrix.outputs.include }}
    steps:
      - uses: actions/checkout@v3
      - name: Install cibuildwheel
        run: pipx install cibuildwheel==2.16.2
      - id: set-matrix
        run: |
          MATRIX=$(
            {
              cibuildwheel --print-build-identifiers --platform linux \
              | jq -nRc '{"only": inputs, "os": "ubuntu-latest"}'
            } | jq -sc
          )
          echo "include=$MATRIX" >> $GITHUB_OUTPUT
    env:
      CIBW_ARCHS_LINUX: x86_64
      # Builds wheels for PyPy & CPython on manylinux
      CIBW_BUILD: "*manylinux*"
      # musllinux crashes during Boost 1.78.0 compilation
      # May be related to https://bugs.gentoo.org/829147
      # Perhaps that bumping Boost version in workflow can solve the issue
      CIBW_SKIP: "*musllinux*"
      CIBW_TEST_REQUIRES: pytest
      CIBW_BUILD_VERBOSITY: 1
      CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014

  build-wheels:
    name: Build ${{ matrix.only }}
    needs: generate-wheels-matrix
    strategy:
      fail-fast: false
      matrix:
        include: ${{ fromJson(needs.generate-wheels-matrix.outputs.include) }}
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v3

      - name: Download libraries
        uses: ./.github/composite-actions/download-libraries
        with:
          download-pybind: true
          download-googletest: false

      - name: Cache unpacked Boost
        uses: actions/cache@v3
        id: cache-unpacked-boost
        with:
          path: ${{github.workspace}}/lib/boost_1_78_0
          key: ${{ runner.os }}-boost-for-wheels-78

      - name: Download & unpack Boost
        run: |
          cd ${{github.workspace}}/lib
          wget -O boost_1_78_0.tar.gz https://sourceforge.net/projects/boost/files/boost/1.78.0/boost_1_78_0.tar.gz/download
          tar xzf boost_1_78_0.tar.gz
        shell: bash
        if: steps.cache-unpacked-boost.outputs.cache-hit != 'true'

      - name: Build wheels
        uses: pypa/cibuildwheel@v2.16.2
        with:
          only: ${{ matrix.only }}
        env:
          CIBW_BEFORE_ALL: >
            cd lib/boost_1_78_0 && 
            ./bootstrap.sh --prefix=/usr/local &&
            ./b2 install -j4 --prefix=/usr/local
          CIBW_TEST_COMMAND: >
            cp {project}/test_input_data/WDC_satellites.csv {project}/src/python_bindings &&
            cd {project}/src/python_bindings &&
            python3 {project}/src/python_bindings/test_bindings.py

      - name: Upload artifact
        uses: actions/upload-artifact@v3
        with:
          name: artifact-${{ matrix.only }}
          if-no-files-found: ignore
          path: ./wheelhouse/*.whl

  merge-artifacts:
    name: Merge artifacts
    runs-on: ubuntu-latest
    needs: build-wheels
    steps:
      - uses: actions/checkout@v3
      - name: Download all artifacts from previous step
        uses: actions/download-artifact@v3
        with:
          path: ${{github.workspace}}/wheel-artifacts

      - name: Delete old artifacts
        uses: geekyeggo/delete-artifact@v2
        with:
          name: artifact-*
          failOnError: false

      - name: Flattening a nested directories
        run: find ${{github.workspace}}/wheel-artifacts -mindepth 2 -type f -exec mv -i '{}' dist/ ';'

      - name: Upload single artifact
        uses: actions/upload-artifact@v3
        with:
          name: wheels
          path: ${{github.workspace}}/dist

  publish-wheels:
    needs: merge-artifacts
    name: Publish wheels
    runs-on: ubuntu-latest
    #if: github.event_name == 'release' && github.event.action == 'published'
    steps:
      - uses: actions/checkout@v3
      - name: Download wheels
        uses: actions/download-artifact@v3
        with:
          name: wheels
      - run: ls -R
        working-directory: dist