ci.yml

name: CI

on:
  pull_request:
    branches:
    - main
  push:
    branches:
    - main

jobs:
  get_os:
    name: Determine supported OS
    runs-on: ubuntu-latest
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
    - name: Check and output correct matrix
      id: output_data
      run: |
        macos='macOS-latest'
        if [ -e .github/macos_version.txt ]
        then
            macos=$(cat ./.github/macos_version.txt)
        fi
        if [ -e .github/macos_only ]
        then
            echo "os_matrix=['$macos']" >> $GITHUB_OUTPUT
            echo "coverage_os=$macos" >> $GITHUB_OUTPUT
        else
            echo "os_matrix=['$macos', 'ubuntu-latest']" >> $GITHUB_OUTPUT
            echo "coverage_os=ubuntu-latest" >> $GITHUB_OUTPUT
        fi
    outputs:
        os_matrix: ${{ steps.output_data.outputs.os_matrix }}
        coverage_os: ${{ steps.output_data.outputs.coverage_os }}

  test:
    name: Tests
    needs: get_os
    strategy:
      matrix:
        os:  ${{fromJson(needs.get_os.outputs.os_matrix)}}
    runs-on: ${{ matrix.os }}
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
    - name: Install Swift
      uses: swift-actions/setup-swift@v1.24.0
    - name: Run tests
      run: swift test --enable-code-coverage -Xswiftc -warnings-as-errors
    - name: Save PR number
      if: ${{ matrix.os == needs.get_os.outputs.coverage_os }}
      run: |
        mkdir -p ./pr
        echo ${{ github.event.number }} > ./pr/NR
    - name: Generate test coverage report
      if: ${{ matrix.os == needs.get_os.outputs.coverage_os }}
      uses: maxep/spm-lcov-action@0.3.1
      with:
        output-file: ./pr/lcov.info
    - name: Upload Coverage Information for Comment
      if: ${{ matrix.os == needs.get_os.outputs.coverage_os }}
      uses: actions/upload-artifact@v3
      with:
        name: pr
        path: pr/
    - name: 'Read minimum coverage'
      if: ${{ matrix.os == needs.get_os.outputs.coverage_os }}
      run: echo "minimum_coverage=$(cat ./.github/minimum_coverage.txt)" >> $GITHUB_ENV
    - name: Enforce test coverage threshhold
      if: ${{ matrix.os == needs.get_os.outputs.coverage_os }}
      uses: VeryGoodOpenSource/very_good_coverage@v2.1.0
      with:
        path: ./pr/lcov.info
        min_coverage: ${{ env.minimum_coverage }}

  swiftlint:
    name: SwiftLint
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Install Swift
        uses: swift-actions/setup-swift@v1.24.0
      - name: Install SwiftLint
        run: |
          curl -L https://github.com/realm/SwiftLint/releases/download/0.52.4/swiftlint_linux.zip -o swiftlint.zip
          unzip swiftlint.zip -d swiftlint
          ./swiftlint/swiftlint --version
      - name: Run SwiftLint
        run: ./swiftlint/swiftlint --strict --reporter github-actions-logging