python-build-test.yaml

name: 'Python: Build and Test'

on:
  push:
    branches:
      - main
      - master
  workflow_dispatch:
  pull_request:
    paths:
      - 'changepoint/**'
      - 'pychangepoint/**'
      - '.github/workflows/python-build-test.yaml'

jobs:
  lint-python:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: pychangepoint
    
    steps:
      - uses: actions/checkout@v3

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.11'
          cache: 'pip'
          cache-dependency-path: "pychangepoint/requirements-lint.txt"
      
      - name: Install Python dependencies
        run: |
          pip install --upgrade pip
          pip install -r requirements-lint.txt
          pip install black[jupyter]

      - name: Lint Python
        run: |
          black --check .
          blackdoc --check .
          ruff . --exit-non-zero-on-fix

  lint-rust:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: pychangepoint

    steps:
      - uses: actions/checkout@v3

      - name: Set up Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: stable
          components: rustfmt, clippy

      - name: Cache Rust
        uses: Swatinem/rust-cache@v2

      - name: Run rustfmt
        run: cargo fmt --all -- --check

      - name: Run clippy
        env:
          RUSTFLAGS: -C debuginfo=0  # Do not produce debug symbols to keep memory usage down
        run : |
          cargo clippy

  linux:
    runs-on: ubuntu-latest
    needs: ["lint-python", "lint-rust"]
    strategy:
      matrix:
        target: [x86_64, x86, aarch64, armv7, s390x, ppc64le]
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@stable
      - uses: actions/setup-python@v4
        with:
          python-version: '3.10'
      - name: Build wheels
        uses: PyO3/maturin-action@v1
        with:
          target: ${{ matrix.target }}
          args: --release --out dist --find-interpreter --manifest-path pychangepoint/Cargo.toml
          manylinux: auto
      - name: Upload wheels
        uses: actions/upload-artifact@v3
        with:
          name: wheels
          path: dist

  windows:
    runs-on: windows-latest
    needs: ["lint-python", "lint-rust"]
    strategy:
      matrix:
        target: [x64, x86]
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@stable
      - uses: actions/setup-python@v4
        with:
          python-version: '3.10'
          architecture: ${{ matrix.target }}
      - name: Build wheels
        uses: PyO3/maturin-action@v1
        with:
          target: ${{ matrix.target }}
          args: --release --out dist --find-interpreter --manifest-path pychangepoint/Cargo.toml
      - name: Upload wheels
        uses: actions/upload-artifact@v3
        with:
          name: wheels
          path: dist

  macos:
    runs-on: macos-latest
    needs: ["lint-python", "lint-rust"]
    strategy:
      matrix:
        target: [x86_64, aarch64]
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@stable
      - uses: actions/setup-python@v4
        with:
          python-version: '3.10'
      - name: Build wheels
        uses: PyO3/maturin-action@v1
        with:
          target: ${{ matrix.target }}
          args: --release --out dist --find-interpreter --manifest-path pychangepoint/Cargo.toml
      - name: Upload wheels
        uses: actions/upload-artifact@v3
        with:
          name: wheels
          path: dist

  release:
    name: Release
    runs-on: ubuntu-latest
    if: startsWith(github.ref, 'refs/tags/py')
    needs: [linux, windows, macos]
    steps:
      - uses: actions/download-artifact@v3
        with:
          name: wheels
      - name: Publish to PyPI
        uses: PyO3/maturin-action@v1
        env:
          MATURIN_PYPI_TOKEN: ${{ secrets.PYPI_API_TOKEN }}
        with:
          command: upload
          args: --skip-existing *