name: Build

on: [push, pull_request]

jobs:
  build_wheels:
    name: Build wheels on ${{ matrix.os }} ${{ matrix.arch }}
    runs-on: ${{ matrix.os }}
    strategy:
      max-parallel: 99
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            arch: x86_64
          - os: ubuntu-latest
            arch: i686
          # Native ARM runner — no QEMU, drastically faster than emulated aarch64
          - os: ubuntu-24.04-arm
            arch: aarch64

          - os: macos-15
            arch: x86_64
          - os: macos-15
            arch: arm64
          # Disabled until someone figures out how to build capnproto for arm64 and x86_64 simultaneously
          # - os: macOS-latest
          #   arch: universal2

          - os: windows-2022
            arch: AMD64
          - os: windows-2022
            arch: x86
          # Does not build currently
          # - os: windows-2019
          #   arch: ARM64

    steps:
      - uses: actions/checkout@v5

      - name: Build wheels
        uses: pypa/cibuildwheel@v3.4.1
        with:
          output-dir: wheelhouse
        env:
          CIBW_ARCHS: ${{ matrix.arch }}
          # Drop EOL CPython 3.8 (also avoids the macOS x86_64-only-installer warning)
          CIBW_SKIP: "cp38-*"
          CIBW_TEST_REQUIRES: pytest pytest-asyncio
          CIBW_TEST_COMMAND: pytest {project}
          # Force libcapnp to build for the target arch on macOS (the runner
          # is arm64, so without this an x86_64 wheel ends up linking against
          # an arm64 libkj/libcapnp and failing to load at test time).
          CMAKE_OSX_ARCHITECTURES: "${{ runner.os == 'macOS' && matrix.arch || '' }}"

      - uses: actions/upload-artifact@v6
        with:
          name: cibw-wheels-${{ matrix.os }}-${{ matrix.arch }}-${{ strategy.job-index }}
          path: ./wheelhouse/*.whl

  # Exotic arches built via QEMU emulation — very slow (often >1h), so only run
  # on release tags rather than every push/PR.
  build_wheels_exotic:
    name: Build wheels (exotic) ${{ matrix.arch }}
    if: startsWith(github.ref, 'refs/tags/v')
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        arch: [ppc64le, s390x]
    steps:
      - uses: actions/checkout@v5

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v4

      - name: Build wheels
        uses: pypa/cibuildwheel@v3.4.1
        with:
          output-dir: wheelhouse
        env:
          CIBW_ARCHS: ${{ matrix.arch }}
          CIBW_SKIP: "cp38-*"
          # Tests under QEMU are extremely slow; skip them for these arches.
          CIBW_TEST_SKIP: "*"

      - uses: actions/upload-artifact@v6
        with:
          name: cibw-wheels-${{ matrix.arch }}
          path: ./wheelhouse/*.whl

  build_sdist:
    name: Build source distribution
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Build sdist
        run: pipx run build --sdist

      - uses: actions/upload-artifact@v6
        with:
          name: cibw-sdist
          path: dist/*.tar.gz

  lint:
    name: Lint and format with ruff
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Lint and format with ruff
        run: |
          pip install --upgrade pip
          pip install --group lint
          ruff check .
          ruff format --check .

  # upload_pypi:
  #   needs: [build_wheels, build_sdist]
  #   runs-on: ubuntu-latest
  #   if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
  #   steps:
  #     - uses: actions/download-artifact@v3
  #       with:
  #         # unpacks default artifact into dist/
  #         # if `name: artifact` is omitted, the action will create extra parent dir
  #         name: artifact
  #         path: dist

  #     - uses: pypa/gh-action-pypi-publish@v1.5.0
  #       with:
  #         user: __token__
  #         password: ${{ secrets.PYPI_PASSWORD_RELEASE }}

  #         # password: ${{ secrets.PYPI_PASSWORD }}
  #         # repository_url: https://test.pypi.org/legacy/