name: CI

on:
  - push
  - pull_request

jobs:
  build:
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest]

    steps:
    - uses: actions/checkout@v2

    # https://github.com/actions/cache/issues/133
    - name: Fixup owner of ~/.cargo/
      # Don't remove the trailing /. It is necessary to follow the symlink.
      run: sudo chown -R $(whoami):$(id -ng) ~/.cargo/

    - name: Cache cargo installed crates
      uses: actions/cache@v1.1.2
      with:
        path: ~/.cargo/bin
        key: cargo-installed-crates2-${{ matrix.os }}

    - name: Cache cargo registry
      uses: actions/cache@v1
      with:
        path: ~/.cargo/registry
        key: ${{ runner.os }}-cargo-registry2-${{ hashFiles('**/Cargo.lock') }}

    - name: Cache cargo index
      uses: actions/cache@v1
      with:
        path: ~/.cargo/git
        key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}

    - name: Cache cargo target dir
      uses: actions/cache@v1.1.2
      with:
        path: target
        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain') }}

    - name: Prepare dependencies
      run: |
        git config --global user.email "user@example.com"
        git config --global user.name "User"
        ./prepare.sh

    # Compile is a separate step, as the actions-rs/cargo action supports error annotations
    - name: Compile
      uses: actions-rs/cargo@v1.0.1
      with:
        command: rustc
        args: --release -- -Zrun_dsymutil=no

    - name: Test
      run: |
        # Enable backtraces for easier debugging
        export RUST_BACKTRACE=1

        # Reduce amount of benchmark runs as they are slow
        export COMPILE_RUNS=2
        export RUN_RUNS=2

        ./test.sh --release