name: CI

on:
  push:
  pull_request:
  workflow_dispatch:

jobs:
  test:
    strategy:
      matrix:
        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
    # Unpin when this is fixed:
    # https://github.com/actions/setup-python/issues/544
    runs-on: ubuntu-20.04
    name: 'Python ${{ matrix.python-version }}'
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '${{ matrix.python-version }}'
      - name: Run tests
        run: make test

  publish_docker:
    needs: [test]
    runs-on: ubuntu-latest
    name: 'Publish: Docker Hub'
    if: github.event_name == 'push' && (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/'))
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - id: meta
        name: Docker Hub metadata
        uses: docker/metadata-action@v4
        with:
          images: '${{ secrets.DOCKERHUB_USERNAME }}/void'
          flavor: |
            latest=auto
          tags: |
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: '${{ secrets.DOCKERHUB_USERNAME }}'
          password: '${{ secrets.DOCKERHUB_TOKEN }}'
      - name: Build and publish
        uses: docker/build-push-action@v3
        with:
          # Without context, .dockerignore is not respected?
          # https://stackoverflow.com/a/74552407/514684
          context: .
          labels: '${{ steps.meta.outputs.labels }}'
          platforms: amd64,armhf,arm64
          push: true
          tags: '${{ steps.meta.outputs.tags }}'