cicd.yml

# Docs: https://docs.github.com/en/actions


name: CI/CD

on:
  push:
    branches: ["master"]
  pull_request:
    branches: ["master"]
  merge_group:
    types: [checks_requested]


jobs:

  lint:

    name: Linters

    runs-on: ubuntu-latest
    timeout-minutes: 5

    steps:

      - name: Harden CI
        uses: step-security/harden-runner@v2.5.1
        with:
          disable-sudo: true
          disable-file-monitoring: true
          egress-policy: audit

      - name: Checkout source code
        uses: actions/checkout@v4

      - name: Install Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.11"

      - name: System Python Information
        uses: twisted/python-info-action@v1

      - name: Set up Tox environment
        run: |
          pip install tox
          tox run -e lint --notest

      - name: Tox Python Information
        uses: twisted/python-info-action@v1
        with:
          python-path: .tox/lint/*/python

      - name: Run Linters
        run: tox run -e lint


  mypy:

    name: Mypy (static type checker)

    runs-on: ubuntu-latest
    timeout-minutes: 5

    steps:

      - name: Harden CI
        uses: step-security/harden-runner@v2.5.1
        with:
          disable-sudo: true
          disable-file-monitoring: true
          egress-policy: audit

      - name: Checkout source code
        uses: actions/checkout@v4

      - name: Install Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.11"

      - name: System Python Information
        uses: twisted/python-info-action@v1

      - name: Set up Tox environment
        run: |
          pip install tox
          tox run -e mypy --notest

      - name: Tox Python Information
        uses: twisted/python-info-action@v1
        with:
          python-path: .tox/mypy/*/python

      - name: Run Mypy
        run: tox run -e mypy


  docs:

    name: Build documentation

    runs-on: ubuntu-latest
    timeout-minutes: 5

    steps:

      - name: Harden CI
        uses: step-security/harden-runner@v2.5.1
        with:
          disable-sudo: true
          disable-file-monitoring: true
          egress-policy: audit

      - name: Checkout source code
        uses: actions/checkout@v4

      - name: Install Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.11"

      - name: System Python Information
        uses: twisted/python-info-action@v1

      - name: Set up Tox environment
        run: |
          pip install tox
          tox run -e docs --notest

      - name: Tox Python Information
        uses: twisted/python-info-action@v1
        with:
          python-path: .tox/docs/*/python

      - name: Build documentation
        run: tox run -e docs


  packaging:
    name: Packaging

    runs-on: ubuntu-latest
    timeout-minutes: 5

    steps:

      - name: Harden CI
        uses: step-security/harden-runner@v2.5.1
        with:
          disable-sudo: true
          egress-policy: audit

      - name: Checkout source code
        uses: actions/checkout@v4

      - name: Install Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.11"

      - name: System Python Information
        uses: twisted/python-info-action@v1

      - name: Set up Tox environment
        run: |
          pip install tox
          tox run -e packaging --notest

      - name: Tox Python Information
        uses: twisted/python-info-action@v1
        with:
          python-path: .tox/packaging/*/python

      - name: Check packaging
        run: tox run -e packaging


  unit:

    name: "Py:${{ matrix.python-version }} - ${{ matrix.os }}"

    needs: [lint, mypy, docs, packaging]

    runs-on: ${{ matrix.os }}
    timeout-minutes: 30
    continue-on-error: ${{ matrix.optional }}
    strategy:
      matrix:
        os: ["ubuntu-latest"]
        python-version: ["3.7", "3.8", "3.9", "3.10", "pypy-3.7", "pypy-3.8", "pypy-3.9"]
        tox-prefix: ["test"]
        optional: [false]
        include:
          # Test Python 3.11 with coverage
          - os: "ubuntu-latest"
            python-version: "3.11"
            optional: false
            tox-prefix: "coverage"
          # # Test Python 3.12 but allow it to fail
          # - os: "ubuntu-latest"
          #   python-version: "3.12.0-rc.1"
          #   optional: true
          #   tox-prefix: "test"

    steps:

      - name: Harden CI
        uses: step-security/harden-runner@v2.5.1
        with:
          disable-sudo: true
          egress-policy: audit

      - name: Checkout source code
        uses: actions/checkout@v4
        with:
          fetch-depth: 2

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

      - name: System Python Information
        uses: twisted/python-info-action@v1

      - name: Translate Python version to Tox environment
        shell: python
        run: |
          from os import environ
          from pathlib import Path

          py = "${{ matrix.python-version }}"
          py = "".join(py.split(".")[:2])   # Combine major/minor, toss rest
          py = py.replace("pypy-", "py")     # For Pypy: have a litte less py
          env = f"${{ matrix.tox-prefix }}-py{py}"

          print(f"TOX_ENV={env}")

          p = Path(environ["GITHUB_ENV"])
          f = p.open(mode="a")
          f.write(f"TOX_ENV={env}\n")

      - name: Set up Tox environment
        run: |
          pip install tox
          tox run -e ${TOX_ENV} --notest

      - name: Tox Python Information
        uses: twisted/python-info-action@v1
        with:
          python-path: .tox/${TOX_ENV}/*/python

      - name: Run unit tests
        run: tox run -e ${TOX_ENV}

      - name: Upload Trial log artifact
        if: ${{ failure() }}
        uses: actions/upload-artifact@v3
        with:
          name: trial
          path: .tox/${TOX_ENV}/log/trial.log

      # Use the latest supported Python version for combining coverage to
      # prevent parsing errors in older versions when looking at modern code.
      - uses: "actions/setup-python@v4"
        if: ${{ matrix.tox-prefix == 'coverage' }}
        with:
          python-version: "3.11"

      - name: "Upload coverage to Codecov"
        uses: "codecov/codecov-action@v3.1.4"
        if: ${{ matrix.tox-prefix == 'coverage' }}
        with:
          files: .tox/coverage.xml
          env_vars: GITHUB_REF,GITHUB_COMMIT,GITHUB_USER,GITHUB_WORKFLOW
          fail_ci_if_error: true
        env:
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
          GITHUB_REF: ${{ github.ref }}
          GITHUB_COMMIT: ${{ github.sha }}
          GITHUB_USER: ${{ github.actor }}
          GITHUB_WORKFLOW: ${{ github.workflow }}