name: Tests

on:
  - push
  - pull_request

jobs:
  tests:
    name: ${{ matrix.session }} ${{ matrix.python }} / ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - { python: "3.10", os: "ubuntu-latest", session: "pre-commit" }
          - { python: "3.10", os: "ubuntu-latest", session: "safety" }
          - { python: "3.10", os: "ubuntu-latest", session: "mypy" }
          - { python: "3.9", os: "ubuntu-latest", session: "mypy" }
          - { python: "3.8", os: "ubuntu-latest", session: "mypy" }
          - { python: "3.7", os: "ubuntu-latest", session: "mypy" }
          - { python: "3.10", os: "ubuntu-latest", session: "tests" }
          - { python: "3.9", os: "ubuntu-latest", session: "tests" }
          - { python: "3.8", os: "ubuntu-latest", session: "tests" }
          - { python: "3.7", os: "ubuntu-latest", session: "tests" }
          - { python: "3.10", os: "windows-latest", session: "tests" }
          - { python: "3.10", os: "macos-latest", session: "tests" }
          - { python: "3.10", os: "ubuntu-latest", session: "typeguard" }
          - { python: "3.10", os: "ubuntu-latest", session: "xdoctest" }
          - { python: "3.10", os: "ubuntu-latest", session: "docs-build" }

    env:
      NOXSESSION: ${{ matrix.session }}
      FORCE_COLOR: "1"
      PRE_COMMIT_COLOR: "always"

    steps:
      - name: Check out the repository
        uses: actions/checkout@v3.0.2

      - name: Set up Python ${{ matrix.python }}
        uses: actions/setup-python@v4.2.0
        with:
          python-version: ${{ matrix.python }}

      - name: Upgrade pip
        run: |
          pip install --constraint=.github/workflows/constraints.txt pip
          pip --version

      - name: Upgrade pip in virtual environments
        shell: python
        run: |
          import os
          import pip

          with open(os.environ["GITHUB_ENV"], mode="a") as io:
              print(f"VIRTUALENV_PIP={pip.__version__}", file=io)

      - name: Install Poetry
        run: |
          pipx install --pip-args=--constraint=.github/workflows/constraints.txt poetry
          poetry --version

      - name: Install Nox
        run: |
          pipx install --pip-args=--constraint=.github/workflows/constraints.txt nox
          pipx inject --pip-args=--constraint=.github/workflows/constraints.txt nox nox-poetry
          nox --version

      - name: Compute pre-commit cache key
        if: matrix.session == 'pre-commit'
        id: pre-commit-cache
        shell: python
        run: |
          import hashlib
          import sys

          python = "py{}.{}".format(*sys.version_info[:2])
          payload = sys.version.encode() + sys.executable.encode()
          digest = hashlib.sha256(payload).hexdigest()
          result = "${{ runner.os }}-{}-{}-pre-commit".format(python, digest[:8])

          print("::set-output name=result::{}".format(result))

      - name: Restore pre-commit cache
        uses: actions/cache@v3.0.6
        if: matrix.session == 'pre-commit'
        with:
          path: ~/.cache/pre-commit
          key: ${{ steps.pre-commit-cache.outputs.result }}-${{ hashFiles('.pre-commit-config.yaml') }}
          restore-keys: |
            ${{ steps.pre-commit-cache.outputs.result }}-

      - name: Run Nox
        run: |
          nox --force-color --python=${{ matrix.python }}

      - name: Upload coverage data
        # pin to upload coverage from only one matrix entry, otherwise coverage gets confused later
        if: always() && matrix.session == 'tests' && matrix.python == '3.10' && matrix.os == 'ubuntu-latest'
        uses: "actions/upload-artifact@v3.0.0"
        with:
          name: coverage-data
          path: ".coverage.*"

      - name: Upload documentation
        if: matrix.session == 'docs-build'
        uses: actions/upload-artifact@v3.0.0
        with:
          name: docs
          path: docs/_build

  coverage:
    runs-on: ubuntu-latest
    needs: tests
    steps:
      - name: Check out the repository
        uses: actions/checkout@v3.0.2
        with:
          # Disabling shallow clone is recommended for improving relevancy of reporting in sonarcloud
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v4.2.0
        with:
          python-version: "3.10"

      - name: Upgrade pip
        run: |
          pip install --constraint=.github/workflows/constraints.txt pip
          pip --version

      - name: Install Poetry
        run: |
          pipx install --pip-args=--constraint=.github/workflows/constraints.txt poetry
          poetry --version

      - name: Install Nox
        run: |
          pipx install --pip-args=--constraint=.github/workflows/constraints.txt nox
          pipx inject --pip-args=--constraint=.github/workflows/constraints.txt nox nox-poetry
          nox --version

      - name: Download coverage data
        uses: actions/download-artifact@v3.0.0
        with:
          name: coverage-data

      - name: Combine coverage data and display human readable report
        run: |
          find . -name \*.pyc -delete
          nox --force-color --session=coverage

      - name: Create coverage report
        run: |
          nox --force-color --session=coverage -- xml

      - name: Upload coverage report
        uses: codecov/codecov-action@v3.1.0
        with:
          # server is flaky. see https://github.com/codecov/codecov-action/issues/598
          fail_ci_if_error: false

      - name: SonarCloud Scan
        # thought about just skipping dependabot
        # if: ${{ github.actor != 'dependabot[bot]' }}
        # but figured all pull requests seems better, since none of them will have access to sonarcloud.
        # however, with just skipping pull requests, the build associated with "Triggered via push" is also associated with the pull request and also fails hitting sonarcloud
        # if: ${{ github.event_name != 'pull_request' }}
        # so just skip everything but main
        if: github.ref_name == 'main'
        uses: sonarsource/sonarcloud-github-action@master
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}

      # part about saving PR number and then using it from auto-merge-dependabot-prs from:
      # https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#workflow_run
      - name: Save PR number
        if: ${{ github.event_name == 'pull_request' }}
        env:
          PR_NUMBER: ${{ github.event.number }}
        run: |
          mkdir -p ./pr
          echo "$PR_NUMBER" > ./pr/pr_number
      - uses: actions/upload-artifact@v3
        with:
          name: pr_number
          path: pr/