# Run tests

name: CI

on:
  # This will run when any branch or tag is pushed
  push:
    # standalone is an old branch containing a fully functional pypiserver
    # executable, from back in the day before docker & a better pip.
    branches-ignore:
      - standalone
    tags:
      - "v**"
  # Allowing to run on fork pull requests
  pull_request:

jobs:
  test-cpython:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        # Commented out as tests with tox on python3.9 fail with updated dependencies.
        # See https://github.com/pypiserver/pypiserver/issues/406.
        # uncomment when the issue #406 is resolved.
        # python-version: ["3.6", "3.7", "3.8", "3.9"]
        python-version: ["3.6", "3.7", "3.8"]

    steps:
      - uses: actions/checkout@v2
      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python-version }}
      - name: Install dependencies
        run: pip install tox
      - name: Run tests
        # Create a tox env specification by stripping the dot out of the version
        # specification and appending it to "py"
        run: |
          tox -e "py$(echo ${{ matrix.python-version }} | tr -d .)"

  test-pypy:
    # Run a a separate job so we don't need to mess with conditionally
    # splitting the python version from the build matrix. Also the pypy
    # tests take freaking forever.
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          python-version: pypy3
      - name: Install dependencies
        run: pip install tox
      - name: Run tests
        run: tox -e pypy3

  check:
    # These checks only need to be done once, not for every python version we s
    # upport
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          # Pretty much any python version will do
          python-version: "3.9"
      - name: Install dependencies
        run: |
          pip install -r "requirements/dev.pip"
          pip install types-pkg_resources # one of mypy required stubs
      - name: Check types
        # individual mypy files for now, until we get the rest
        # of the project typechecking
        run: >-
          mypy
          docker/test_docker.py
          pypiserver/config.py 
          tests/test_init.py
      - name: Check formatting
        run: black --diff --check .
      - name: Validate README
        run: ./bin/check_readme.sh

  # Full-flow docker tests, again not python version dependent
  # We _could_ test this on MacOS, but it takes forever to get docker
  # installed. I'm going to say for now probably 99% of people using
  # the docker image will be doing so from a linux system, e.g. for
  # a k8s deploy, and I've verified manually that things work on
  # MacOS, so /shrug.
  test-docker:
    runs-on: "ubuntu-latest"
    steps:
      - uses: actions/checkout@v2
      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          # Pretty much any python version will do
          python-version: "3.9"
      - name: Install test dependencies
        run: pip install -r "requirements/test.pip"
      - name: Install package
        run: pip install -r "requirements/exe.pip"
      - name: Run tests
        run: "pytest docker/test_docker.py"

  tests:
    runs-on: "ubuntu-latest"
    needs:
      - "check"
      - "test-docker"
      - "test-cpython"
      - "test-pypy"
    steps:
      - name: "Everything is good!"
        run: "echo true"

  # RELEASES

  ## PYPI

  build-wheel-and-push-to-pypi:
    runs-on: ubuntu-latest
    needs:
      - "tests"
    # only if a tag is pushed
    if: startsWith(github.event.ref, 'refs/tags/v')
    steps:
      - uses: actions/checkout@master
      - name: Set up Python 3.8
        uses: actions/setup-python@v1
        with:
          python-version: 3.8

      - name: Build distribution _wheel_.
        run: |
          ./bin/package.sh

      - name: Publish distribution 📦 to PyPI.
        uses: pypa/gh-action-pypi-publish@master
        with:
          password: ${{ secrets.PYPI_API_TOKEN }}
          print_hash: true

  ## DOCKER

  # figure out which docker tags we need to push
  docker-determine-tags:
    runs-on: "ubuntu-latest"
    needs:
      - "tests"
    steps:
      - uses: "actions/checkout@v2"

      - uses: "actions/setup-python@v2"
        with:
          python-version: "3.9"

        # This script prints a JSON array of needed docker tags, depending on the
        # ref. That array is then used to construct the matrix of the
        # deploy-docker job
      - name: "Get expected docker tags"
        id: "tags"
        run: >-
          echo "::set-output name=tags::$(bin/ci_helper.py ${{ github.ref }} docker_tags)"

        # This is needed because GH actions will fail on an empty matrix, so
        # we need to be sure the `if` condition is false on the next job if
        # the matrix will be empty. The script prints 'true' if the array is
        # not empty, or 'false' otherwise.
      - name: "Determine whether any tags are needed"
        id: "has_tags"
        run: >-
          echo "::set-output name=has_tags::$(bin/ci_helper.py ${{ github.ref }} has_tags)"

    outputs:
      tags: "${{ steps.tags.outputs.tags }}"
      has_tags: "${{ steps.has_tags.outputs.has_tags }}"

  # Deploy any needed docker tags
  deploy-docker:
    runs-on: "ubuntu-latest"
    needs:
      - "docker-determine-tags"
    if: "${{ fromJson(needs.docker-determine-tags.outputs.has_tags) }}"
    strategy:
      matrix:
        tag: "${{ fromJson(needs.docker-determine-tags.outputs.tags) }}"
    steps:
      - uses: "actions/checkout@v2"

      - name: "Cache Docker layers"
        uses: "actions/cache@v2"
        with:
          path: "/tmp/.buildx-cache"
          key: "${{ runner.os }}-buildx-${{ github.sha }}"
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: "Login to Docker Hub"
        uses: "docker/login-action@v1"
        with:
          username: "${{ secrets.DOCKER_HUB_USER }}"
          password: "${{ secrets.DOCKER_HUB_TOKEN }}"

      - name: "Set up Docker Buildx"
        id: "buildx"
        uses: "docker/setup-buildx-action@v1"

      - name: "Build and push"
        id: "docker_build"
        uses: "docker/build-push-action@v2"
        with:
          context: "./"
          file: "./Dockerfile"
          builder: "${{ steps.buildx.outputs.name }}"
          push: true
          tags: "pypiserver/pypiserver:${{ matrix.tag }}"
          cache-from: "type=local,src=/tmp/.buildx-cache"
          cache-to: "type=local,dest=/tmp/.buildx-cache"

      - name: "Image digest"
        run: "echo ${{ steps.docker_build.outputs.digest }}"