name: build

on:
  push:
  pull_request:
    types: [opened, reopened, labeled, unlabeled, synchronize]
  workflow_dispatch:

jobs:
  build:
    runs-on: ${{ matrix.os }}
    name: ${{ matrix.name }}
    timeout-minutes: 30

    strategy:
      fail-fast: false
      matrix:
        include:
          - name: ubuntu-latest (make) Release
            os: ubuntu-latest
            preset: make
            build_type: Release
            cc: gcc-13
            cxx: g++-13

          - name: ubuntu-latest (gcc-15) Release
            os: ubuntu-latest
            preset: make
            build_type: Release
            cc: gcc-15
            cxx: g++-15

          - name: macos-latest (make) Release
            os: macos-latest
            preset: make
            build_type: Release
            cc: clang
            cxx: clang++

          - name: windows-latest (windows) Release
            os: windows-latest
            preset: windows
            build_type: Release

    concurrency:
      group: ${{ github.workflow }}-${{ github.ref }}-${{ matrix.name }}
      cancel-in-progress: true

    steps:
      - uses: actions/checkout@v6

      - name: Install Linux toolchain
        if: runner.os == 'Linux'
        run: |
          if [[ "${{ matrix.cc }}" == "gcc-15" ]]; then
            sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
          fi
          sudo apt-get update
          sudo apt-get install -y ${{ matrix.cc }} ${{ matrix.cxx }}

      - name: ccache
        uses: hendrikmuhs/ccache-action@v1.2

      - name: Configure CMake
        run: >
          cmake --preset ${{ matrix.preset }}
          -S ${{ github.workspace }} -B ${{ github.workspace }}/build
          -D CMAKE_BUILD_TYPE=${{ matrix.build_type }}
          -D CMAKE_C_COMPILER=${{ matrix.cc || '' }}
          -D CMAKE_CXX_COMPILER=${{ matrix.cxx || '' }}
          -D CMAKE_C_COMPILER_LAUNCHER=ccache
          -D CMAKE_CXX_COMPILER_LAUNCHER=ccache
          -DCMAKE_POLICY_VERSION_MINIMUM=3.5
          ${{ matrix.cc == 'gcc-15' && '-DCMAKE_CXX_FLAGS=-Wno-error=missing-declarations -Wno-error=missing-field-initializers' || '' }}

      - name: Build
        run: cmake --build ${{ github.workspace }}/build --preset ${{ matrix.preset }} --config ${{ matrix.build_type }} -j 4

      - name: Archive production artifacts
        uses: actions/upload-artifact@v6
        with:
          name: gemma-${{ matrix.os }}-${{ matrix.preset }}-${{ matrix.build_type }}-${{ matrix.cc || 'default' }}
          path: |
            ${{ github.workspace }}/build/${{ matrix.build_type }}/gemma.exe
            ${{ github.workspace }}/build/${{ matrix.build_type }}/libgemma.lib
            ${{ github.workspace }}/build/gemma
            ${{ github.workspace }}/build/libgemma.a

  bazel:
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@58077d3c7e43986b6b15fba718e8ea69e387dfcc  # v2.15.1
        with:
          egress-policy: audit  # cannot be block - runner does git checkout

      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.0.0

      - uses: bazelbuild/setup-bazelisk@b39c379c82683a5f25d34f0d062761f62693e0b2 # v3.0.0

      - uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4.2.2
        with:
          path: ~/.cache/bazel
          key: bazel-${{ runner.os }}
      - run: bazel build --cxxopt=-std=c++20 //:gemma --jobs=10 --show_progress_rate_limit=1