ferrompi 0.4.0

name: Publish to crates.io

on:
  push:
    tags:
      - "v[0-9]+.[0-9]+.[0-9]+*"

env:
  CARGO_TERM_COLOR: always

jobs:
  verify-and-test:
    name: Verify and Test
    runs-on: ubuntu-latest
    timeout-minutes: 30
    permissions:
      contents: read
    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Install MPI
        run: |
          sudo apt-get update
          sudo apt-get install -y mpich libmpich-dev pkg-config

      - name: Hotfix MPICH on Ubuntu Noble
        run: |
          # Workaround for broken MPICH 4.2.0 package in Ubuntu 24.04 LTS (Noble)
          # See: https://bugs.launchpad.net/ubuntu/+source/mpich/+bug/2072338
          ARCH=$(dpkg --print-architecture)
          REPO=https://archive.ubuntu.com/ubuntu
          LIBUCX=libucx0_1.18.1+ds-2_${ARCH}.deb
          LIBMPICH=libmpich12_4.2.1-5_${ARCH}.deb
          curl -sSOf ${REPO}/pool/universe/u/ucx/${LIBUCX}
          curl -sSOf ${REPO}/pool/universe/m/mpich/${LIBMPICH}
          TMPDIR=$(mktemp -d)
          dpkg-deb -x ${LIBUCX} ${TMPDIR}
          dpkg-deb -x ${LIBMPICH} ${TMPDIR}
          LIBDIR=/usr/lib/$(arch)-linux-gnu
          sudo cp -a ${TMPDIR}${LIBDIR}/ucx ${LIBDIR}
          sudo cp -a ${TMPDIR}${LIBDIR}/libuc[mpst]*.so.0.*.* ${LIBDIR}
          sudo cp -a ${TMPDIR}${LIBDIR}/libuc[mpst]*.so.0 ${LIBDIR}
          sudo cp -a ${TMPDIR}${LIBDIR}/libmpi*.so.12.*.* ${LIBDIR}
          sudo cp -a ${TMPDIR}${LIBDIR}/libmpi*.so.12 ${LIBDIR}
          sudo ldconfig
          rm -rf ${TMPDIR} ${LIBUCX} ${LIBMPICH}
          echo "MPICH hotfix applied successfully"

      - name: Extract version from tag
        id: tag_version
        run: |
          TAG="${GITHUB_REF#refs/tags/v}"
          echo "version=$TAG" >> $GITHUB_OUTPUT

      - name: Extract version from Cargo.toml
        id: cargo_version
        run: |
          VERSION=$(grep -m1 '^version' Cargo.toml | cut -d'"' -f2)
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Verify versions match
        run: |
          if [ "${{ steps.tag_version.outputs.version }}" != "${{ steps.cargo_version.outputs.version }}" ]; then
            echo "❌ Version mismatch!"
            echo "Tag version: ${{ steps.tag_version.outputs.version }}"
            echo "Cargo.toml version: ${{ steps.cargo_version.outputs.version }}"
            exit 1
          fi
          echo "✅ Versions match: ${{ steps.cargo_version.outputs.version }}"

      - name: Run cargo-audit
        uses: actions-rust-lang/audit@v1
        with:
          denyWarnings: false

      - name: Run tests
        run: cargo test --all-features --verbose

      - name: Build examples
        run: cargo build --examples --release

      - name: Run examples
        run: |
          for example in hello_world ring allreduce nonblocking persistent_bcast; do
            echo "Testing example: $example"
            mpiexec -n 4 ./target/release/examples/$example || exit 1
          done

      - name: Verify package
        run: cargo package --allow-dirty

      - name: Dry-run publish
        run: cargo publish --dry-run --allow-dirty

  publish:
    name: Publish to crates.io
    needs: [verify-and-test]
    runs-on: ubuntu-latest
    timeout-minutes: 20
    environment:
      name: crates-io
      url: https://crates.io/crates/ferrompi
    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Install MPI
        run: |
          sudo apt-get update
          sudo apt-get install -y mpich libmpich-dev pkg-config

      - name: Hotfix MPICH on Ubuntu Noble
        run: |
          ARCH=$(dpkg --print-architecture)
          REPO=https://archive.ubuntu.com/ubuntu
          LIBUCX=libucx0_1.18.1+ds-2_${ARCH}.deb
          LIBMPICH=libmpich12_4.2.1-5_${ARCH}.deb
          curl -sSOf ${REPO}/pool/universe/u/ucx/${LIBUCX}
          curl -sSOf ${REPO}/pool/universe/m/mpich/${LIBMPICH}
          TMPDIR=$(mktemp -d)
          dpkg-deb -x ${LIBUCX} ${TMPDIR}
          dpkg-deb -x ${LIBMPICH} ${TMPDIR}
          LIBDIR=/usr/lib/$(arch)-linux-gnu
          sudo cp -a ${TMPDIR}${LIBDIR}/ucx ${LIBDIR}
          sudo cp -a ${TMPDIR}${LIBDIR}/libuc[mpst]*.so.0.*.* ${LIBDIR}
          sudo cp -a ${TMPDIR}${LIBDIR}/libuc[mpst]*.so.0 ${LIBDIR}
          sudo cp -a ${TMPDIR}${LIBDIR}/libmpi*.so.12.*.* ${LIBDIR}
          sudo cp -a ${TMPDIR}${LIBDIR}/libmpi*.so.12 ${LIBDIR}
          sudo ldconfig
          rm -rf ${TMPDIR} ${LIBUCX} ${LIBMPICH}

      - name: Publish to crates.io
        run: cargo publish
        env:
          CARGO_REGISTRY_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}

  create-release:
    name: Create GitHub Release
    needs: [publish]
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      contents: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Generate release notes
        id: release_notes
        run: |
          VERSION="${GITHUB_REF#refs/tags/v}"
          echo "version=$VERSION" >> $GITHUB_OUTPUT

          # Try to extract changelog section
          if [ -f "CHANGELOG.md" ]; then
            awk "/^## \[$VERSION\]/,/^## \[/" CHANGELOG.md | sed '$d' > release_notes.txt
          else
            echo "Release $VERSION" > release_notes.txt
            echo "" >> release_notes.txt
            echo "See [CHANGELOG.md](CHANGELOG.md) for details." >> release_notes.txt
          fi

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          body_path: release_notes.txt
          draft: false
          prerelease: ${{ contains(github.ref, 'alpha') || contains(github.ref, 'beta') || contains(github.ref, 'rc') }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}