name: CI

on:
  - push
  - pull_request

jobs:
  rustfmt:
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
    - uses: actions/checkout@v3

    - name: Install rustfmt
      run: |
        rustup component add rustfmt

    - name: Rustfmt
      run: |
        cargo fmt --check
        rustfmt --check build_system/main.rs
        rustfmt --check example/*


  test:
    runs-on: ${{ matrix.os }}
    timeout-minutes: 60

    defaults:
      run:
        shell: bash

    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            env:
              TARGET_TRIPLE: x86_64-unknown-linux-gnu
          - os: macos-latest
            env:
              TARGET_TRIPLE: x86_64-apple-darwin
          # cross-compile from Linux to Windows using mingw
          - os: ubuntu-latest
            env:
              TARGET_TRIPLE: x86_64-pc-windows-gnu
          - os: ubuntu-latest
            env:
              TARGET_TRIPLE: aarch64-unknown-linux-gnu
          # s390x requires QEMU 6.1 or greater, we could build it from source, but ubuntu 22.04 comes with 6.2 by default
          - os: ubuntu-latest
            env:
              TARGET_TRIPLE: s390x-unknown-linux-gnu
          - os: windows-latest
            env:
              TARGET_TRIPLE: x86_64-pc-windows-msvc
          - os: windows-latest
            env:
              TARGET_TRIPLE: x86_64-pc-windows-gnu

    steps:
    - uses: actions/checkout@v3

    - name: Cache cargo target dir
      uses: actions/cache@v3
      with:
        path: build/cg_clif
        key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}

    - name: Set MinGW as the default toolchain
      if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
      run: rustup set default-host x86_64-pc-windows-gnu

    - name: Install MinGW toolchain and wine
      if: matrix.os == 'ubuntu-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
      run: |
        sudo apt-get update
        sudo apt-get install -y gcc-mingw-w64-x86-64 wine-stable

    - name: Install AArch64 toolchain and qemu
      if: matrix.os == 'ubuntu-latest' && matrix.env.TARGET_TRIPLE == 'aarch64-unknown-linux-gnu'
      run: |
        sudo apt-get update
        sudo apt-get install -y gcc-aarch64-linux-gnu qemu-user

    - name: Install s390x toolchain and qemu
      if: matrix.env.TARGET_TRIPLE == 's390x-unknown-linux-gnu'
      run: |
        sudo apt-get update
        sudo apt-get install -y gcc-s390x-linux-gnu qemu-user

    - name: Prepare dependencies
      run: ./y.sh prepare

    - name: Build
      run: ./y.sh build --sysroot none

    - name: Test
      env:
        TARGET_TRIPLE: ${{ matrix.env.TARGET_TRIPLE }}
      run: ./y.sh test

    - name: Install LLVM standard library
      run: rustup target add ${{ matrix.env.TARGET_TRIPLE }}

    # This is roughly config rust-lang/rust uses for testing
    - name: Test with LLVM sysroot
      # Skip native x86_64-pc-windows-gnu. It is way too slow and cross-compiled
      # x86_64-pc-windows-gnu covers at least part of the tests.
      if: matrix.os != 'windows-latest' || matrix.env.TARGET_TRIPLE != 'x86_64-pc-windows-gnu'
      env:
        TARGET_TRIPLE: ${{ matrix.env.TARGET_TRIPLE }}
      run: ./y.sh test --sysroot llvm --no-unstable-features


  # This job doesn't use cg_clif in any way. It checks that all cg_clif tests work with cg_llvm too.
  test_llvm:
    runs-on: ubuntu-latest
    timeout-minutes: 60

    defaults:
      run:
        shell: bash

    steps:
    - uses: actions/checkout@v3

    - name: Prepare dependencies
      run: ./y.rs prepare

    - name: Disable JIT tests
      run: |
        sed -i 's/jit./#jit./' config.txt

    - name: Test
      env:
        TARGET_TRIPLE: x86_64-unknown-linux-gnu
      run: ./y.rs test --use-backend llvm

  bench:
    runs-on: ubuntu-latest
    timeout-minutes: 60

    defaults:
      run:
        shell: bash

    steps:
    - uses: actions/checkout@v3

    - name: Cache cargo target dir
      uses: actions/cache@v3
      with:
        path: build/cg_clif
        key: ${{ runner.os }}-x86_64-unknown-linux-gnu-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}

    - name: Cache cargo bin dir
      uses: actions/cache@v3
      with:
        path: ~/.cargo/bin
        key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-cargo-bin-dir-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}

    - name: Install hyperfine
      run: cargo install hyperfine || true

    - name: Prepare dependencies
      run: ./y.sh prepare

    - name: Build
      run: CI_OPT=1 ./y.sh build --sysroot none

    - name: Benchmark
      run: CI_OPT=1 ./y.sh bench


  dist:
    runs-on: ${{ matrix.os }}
    timeout-minutes: 60

    defaults:
      run:
        shell: bash

    strategy:
      fail-fast: false
      matrix:
        include:
          # FIXME update at some point in the future once most distros use a newer glibc
          - os: ubuntu-20.04
            env:
              TARGET_TRIPLE: x86_64-unknown-linux-gnu
          - os: macos-latest
            env:
              TARGET_TRIPLE: x86_64-apple-darwin
          # cross-compile from Linux to Windows using mingw
          - os: ubuntu-latest
            env:
              TARGET_TRIPLE: x86_64-pc-windows-gnu
          - os: windows-latest
            env:
              TARGET_TRIPLE: x86_64-pc-windows-msvc
          - os: windows-latest
            env:
              TARGET_TRIPLE: x86_64-pc-windows-gnu

    steps:
    - uses: actions/checkout@v3

    - name: Cache cargo target dir
      uses: actions/cache@v3
      with:
        path: build/cg_clif
        key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-dist-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}

    - name: Set MinGW as the default toolchain
      if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
      run: rustup set default-host x86_64-pc-windows-gnu

    - name: Install MinGW toolchain and wine
      if: matrix.os == 'ubuntu-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
      run: |
        sudo apt-get update
        sudo apt-get install -y gcc-mingw-w64-x86-64 wine-stable

    - name: Prepare dependencies
      run: ./y.sh prepare

    - name: Build backend
      run: CI_OPT=1 ./y.sh build --sysroot none

    - name: Build sysroot
      run: CI_OPT=1 ./y.sh build

    - name: Package prebuilt cg_clif
      run: tar cvfJ cg_clif.tar.xz dist

    - name: Upload prebuilt cg_clif
      if: matrix.os == 'windows-latest' || matrix.env.TARGET_TRIPLE != 'x86_64-pc-windows-gnu'
      uses: actions/upload-artifact@v3
      with:
        name: cg_clif-${{ matrix.env.TARGET_TRIPLE }}
        path: cg_clif.tar.xz

    - name: Upload prebuilt cg_clif (cross compile)
      if: matrix.os != 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
      uses: actions/upload-artifact@v3
      with:
        name: cg_clif-${{ runner.os }}-cross-x86_64-mingw
        path: cg_clif.tar.xz

  release:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    if: ${{ github.ref == 'refs/heads/master' }}
    needs: [rustfmt, test, bench, dist]

    concurrency:
      group: release-dev
      cancel-in-progress: true

    steps:
      - uses: actions/checkout@v3

      - name: Download all built artifacts
        uses: actions/download-artifact@v3
        with:
          path: artifacts/

      - run: |
          ls -R artifacts/
          mkdir release/
          pushd artifacts/
          for dir in *; do
            mv $dir/cg_clif.tar.xz ../release/$dir.tar.xz
            rmdir $dir/ # verify $dir is empty
          done
          popd
          rmdir artifacts/ # verify all artifacts are represented in release/
          ls -R release/

      - run: npm install --production
        working-directory: .github/actions/github-release

      - name: Publish Release
        uses: ./.github/actions/github-release
        with:
          files: "release/*"
          token: ${{ github.token }}
        continue-on-error: true