name: Build Crate

on:
  pull_request:
    paths:
      - 'index/**.toml'

jobs:

  build:
    name: ${{ matrix.os }}::${{ matrix.tag }}

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

    strategy:
      matrix:
        os:
          - macos-latest
          - ubuntu-latest
          - windows-latest
        tag:
          - arch-rolling
          - centos-latest-community-latest
          - community-latest
          - debian-stable
          - ubuntu-lts
          - ""
        exclude: # inclusions don't allow to add arrays of values to a scenario
          - os: ubuntu-latest
            tag: ""
          - os: macos-latest
            tag: arch-rolling
          - os: macos-latest
            tag: centos-latest-community-latest
          - os: macos-latest
            tag: community-latest
          - os: macos-latest
            tag: debian-stable
          - os: macos-latest
            tag: ubuntu-lts
          - os: windows-latest
            tag: arch-rolling
          - os: windows-latest
            tag: centos-latest-community-latest
          - os: windows-latest
            tag: community-latest
          - os: windows-latest
            tag: debian-stable
          - os: windows-latest
            tag: ubuntu-lts

    steps:
    - name: Check out alire-index
      uses: actions/checkout@v2
      with:
        fetch-depth: 0
        # Needed to be able to diff and obtain changed files. Furthermore, we
        # need the full history or else grafted partial branches confuse the
        # changed files detectors (in both scripts/gh-build-crate.sh and
        # check-author action).

    - name: Set up GNAT toolchain (FSF)
      if: matrix.os == 'ubuntu-latest'
      uses: ada-actions/toolchain@ce2020
      with:
        distrib: fsf # faster install?

    - name: Set up GNAT toolchain (Community)
      if: matrix.os != 'ubuntu-latest'
      uses: ada-actions/toolchain@ce2020
      with:
        distrib: community

    - name: Set up stable `alr`
      if: contains(github.base_ref, 'stable-')
      uses: alire-project/setup-alire@v1
      with:
        toolchain: --disable-assistant # We want to use the external ones in this workflow

    - name: Set up devel `alr`
      if: contains(github.base_ref, 'devel-')
      uses: alire-project/setup-alire@v1
      with:
        toolchain: --disable-assistant # We want to use the external ones in this workflow
        branch: master

    - name: Test crate (Linux)
      if: matrix.os == 'ubuntu-latest' # docker testing only for linuxes
      uses: mosteo/actions@docker-run/v1
      with:
        image: alire/gnat:${{matrix.tag}}
        command: scripts/gh-build-crate.sh
        params: -v ${{ github.workspace }}/alire_install/bin/alr:/usr/bin/alr

    - name: Install tar from msys2 (Windows) # Git tar in Actions VM does not seem to work)
      if: matrix.os == 'windows-latest'
      run: C:\Users\runneradmin\.cache\alire\msys64\usr\bin\pacman --noconfirm -S tar

    - name: Test crate (Windows/MacOS)
      if: matrix.os != 'ubuntu-latest' # native testing in Windows/MacOS
      run: scripts/gh-build-crate.sh
      shell: bash