name: build-test
on:
  push:
    branches:
      - main
    paths-ignore:
      - '**.md'
  pull_request:
    paths-ignore:
      - '**.md'
jobs:
  test:
    name: Unit Tests - ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Set Node.js 12
        uses: actions/setup-node@v1
        with:
          node-version: 12
      # http://www.tiernok.com/posts/2019/faster-npm-installs-during-ci/
      - run: npm ci --prefer-offline --no-audit --progress=false
      - run: npm test

  install-haskell:
    name: GHC ${{ matrix.ghc }}, Cabal ${{ matrix.cabal }} - ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
        ghc: ['latest', '8.4.4']
        cabal: ['latest']
        include:
          - os: ubuntu-latest
            ghc: '7.10.3'
            cabal: '3.0.0.0'
          - os: ubuntu-latest
            ghc: '8.2.2'
            cabal: '2.0'

    steps:
      - uses: actions/checkout@v2
      - uses: ./
        with:
          ghc-version: ${{ matrix.ghc }}
          cabal-version: ${{ matrix.cabal }}
      - run: |
          runhaskell --version
          runhaskell __tests__/hello.hs
      - shell: bash
        run: cd __tests__/project && cabal build && cabal run
      - run: |
          cabal --version
          ghc --version
      - shell: bash
        if: matrix.ghc != 'latest'
        # this check depends on the ghc versions being "exact" in the matrix
        run: |
          [[ $(ghc --numeric-version) == ${{ matrix.ghc }} ]]

  install-stack:
    name: Stack ${{ matrix.stack }} ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
        stack: ['latest', '1.9.1']

    steps:
      - uses: actions/checkout@v2

      - uses: ./
        with:
          enable-stack: true
          stack-no-global: true
          stack-version: ${{ matrix.stack }}
      - run: |
          stack --version
          stack