name: CI
on:
  pull_request:
    paths:
      - '**/*.swift'
      - .github/workflows/ci.yml
  schedule:
    - cron: '3 3 * * 5'  # 3:03 AM, every Friday
concurrency:
  group: ${{ github.head_ref || 'push' }}
  cancel-in-progress: true
jobs:
  smoke:
    runs-on: macos-latest
    steps:
    - uses: actions/checkout@v2
    - run: swift test --generate-linuxmain
    - run: git diff --exit-code

  apple:
    runs-on: macos-latest
    strategy:
      matrix:
        platform:
        - iOS
        - tvOS
        - macOS
        - watchOS
    steps:
    - uses: actions/checkout@v2
    - uses: mxcl/xcodebuild@v1
      with:
        platform: ${{ matrix.platform }}
        code-coverage: true
        warnings-as-errors: true
    - uses: codecov/codecov-action@v1

  linux-swift-4:
    name: linux (${{ matrix.swift }})
    runs-on: ubuntu-latest
    strategy:
      matrix:
        swift: ['4.2', '5.0']
    container:
      image: swift:${{ matrix.swift }}
    steps:
    - uses: actions/checkout@v2
    - run: useradd -ms /bin/bash mxcl
    - run: chown -R mxcl .
    - run: su mxcl -c 'swift test --parallel'

  linux:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        swift:
        - '5.1'
        - '5.2'
        - '5.3'
        - '5.4'
    container:
      image: swift:${{ matrix.swift }}
    steps:
    - uses: actions/checkout@v2
    - run: useradd -ms /bin/bash mxcl
           # ^^ we need to be a normal user and not root for the tests to be valid
    - run: chown -R mxcl .
    - run: su mxcl -c 'swift test --parallel --enable-code-coverage'
    - name: Generate `.lcov`
      run: |
        apt-get -qq update && apt-get -qq install curl
        b=$(swift build --show-bin-path)
        llvm-cov export \
          -format lcov \
          -instr-profile="$b"/codecov/default.profdata \
          --ignore-filename-regex='\.build|Tests' \
          "$b"/*.xctest \
          > info.lcov
    - uses: codecov/codecov-action@v1
      with:
        file: ./info.lcov