ci-cd.yml

---
name: CI/CD

on:
  push:
    branches:
    - main
  pull_request:
    branches:
    - main
  workflow_dispatch:
    inputs:
      release-version:
        # github.event_name == 'workflow_dispatch'
        # && github.event.inputs.release-version
        description: >-
          Target PEP440-compliant version to release.
          Please, don't prepend `v`.
        required: true
      release-committish:
        # github.event_name == 'workflow_dispatch'
        # && github.event.inputs.release-committish
        default: ''
        description: >-
          The commit to be released to PyPI and tagged
          in Git as `release-version`. Normally, you
          should keep this empty.
      YOLO:
        default: false
        description: >-
          Flag whether test results should block the
          release (true/false). Only use this under
          extraordinary circumstances to ignore the
          test failures and cut the release regardless.
  # Run once per week (Monday at 06:00 UTC)
  schedule:
  - cron: 0 6 * * 1

concurrency:
  group: >-
    ${{
        github.workflow
    }}-${{
        github.ref_type
    }}-${{
        github.event.pull_request.number || github.sha
    }}
  cancel-in-progress: true

env:
  FORCE_COLOR: 1  # Request colored output from CLI tools supporting it
  MYPY_FORCE_COLOR: 1  # MyPy's color enforcement
  PIP_DISABLE_PIP_VERSION_CHECK: 1
  PIP_NO_PYTHON_VERSION_WARNING: 1
  PIP_NO_WARN_SCRIPT_LOCATION: 1
  PRE_COMMIT_COLOR: always
  PY_COLORS: 1  # Recognized by the `py` package, dependency of `pytest`
  PYTHONIOENCODING: utf-8
  PYTHONLEGACYWINDOWSSTDIO: 1  # Python 3.6 hack
  PYTHONUTF8: 1
  TOX_PARALLEL_NO_SPINNER: 1
  TOX_TESTENV_PASSENV: >-  # Make tox-wrapped tools see color requests
    FORCE_COLOR
    MYPY_FORCE_COLOR
    NO_COLOR
    PRE_COMMIT_COLOR
    PY_COLORS
    PYTEST_THEME
    PYTEST_THEME_MODE
    PYTHONIOENCODING
    PYTHONLEGACYWINDOWSSTDIO
    PYTHONUTF8

jobs:
  lint:
    name: >-
      Linters @ py${{ matrix.python-version }}
      @ ${{ matrix.os }}
    needs:
    - pre-setup
    runs-on: ${{ matrix.os }}-latest
    strategy:
      matrix:
        os:
        - Ubuntu
        python-version:
        - 3.11

    env:
      TOXENV: lint

    steps:
    - name: >-
        Switch to using Python v${{ matrix.python-version }}
        by default
      uses: actions/setup-python@v4
      with:
        python-version: ${{ matrix.python-version }}
    - name: >-
        Calculate Python interpreter version hash value
        for use in the cache key
      id: calc-cache-key-py
      run: |
        from hashlib import sha512
        from os import environ
        from pathlib import Path
        from sys import version

        FILE_APPEND_MODE = 'a'

        hash = sha512(version.encode()).hexdigest()

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(f'py-hash-key={hash}', file=outputs_file)
      shell: python
    - name: Get pip cache dir
      id: pip-cache
      run: >-
        echo "dir=$(python -m pip cache dir)" >> "${GITHUB_OUTPUT}"
    - name: Set up pip cache
      uses: actions/cache@v3
      with:
        path: ${{ steps.pip-cache.outputs.dir }}
        key: >-
          ${{ runner.os }}-pip-${{
          steps.calc-cache-key-py.outputs.py-hash-key }}-${{
          needs.pre-setup.outputs.cache-key-files }}
        restore-keys: |
          ${{ runner.os }}-pip-${{
              steps.calc-cache-key-py.outputs.py-hash-key
          }}-
          ${{ runner.os }}-pip-
    - name: Install tox
      run: >-
        python -m
        pip install
        --user
        tox

    - name: Grab the source from Git
      uses: actions/checkout@v3

    - name: Pre-populate tox env
      run: >-
        python -m
        tox
        -p auto
        --parallel-live -vvvv
        --skip-missing-interpreters false
        --notest
    - name: Run linters
      run: >-
        python -m
        tox
        -p auto
        --parallel-live -vvvv
        --skip-missing-interpreters false

  pre-setup:
    name: Pre-set global build settings
    runs-on: ubuntu-latest
    defaults:
      run:
        shell: python
    outputs:
      dist-version: >-
        ${{
            steps.request-check.outputs.release-requested == 'true'
            && github.event.inputs.release-version
            || steps.scm-version.outputs.dist-version
        }}
      is-untagged-devel: >-
        ${{ steps.unrequest-check.outputs.is-untagged-devel || false }}
      release-requested: >-
        ${{
            steps.request-check.outputs.release-requested || false
        }}
      is-yolo-mode: >-
        ${{
          (
            steps.request-check.outputs.release-requested == 'true'
            && github.event.inputs.YOLO
          )
          && true || false
        }}
      cache-key-files: >-
        ${{ steps.calc-cache-key-files.outputs.files-hash-key }}
      git-tag: ${{ steps.git-tag.outputs.tag }}
      sdist-artifact-name: ${{ steps.artifact-name.outputs.sdist }}
      wheel-artifact-name: ${{ steps.artifact-name.outputs.wheel }}
    steps:
    - name: Switch to using Python 3.11 by default
      uses: actions/setup-python@v4
      with:
        python-version: 3.11
    - name: >-
        Mark the build as non-tagged
        ${{ github.event.repository.default_branch }} build
      id: unrequest-check
      if: >-
        github.event_name == 'push' &&
        github.ref == format(
          'refs/heads/{0}', github.event.repository.default_branch
        )
      run: |
        from os import environ
        from pathlib import Path

        FILE_APPEND_MODE = 'a'

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print('is-untagged-devel=true', file=outputs_file)
    - name: Mark the build as tagged
      id: request-check
      if: github.event_name == 'workflow_dispatch'
      run: |
        from os import environ
        from pathlib import Path

        FILE_APPEND_MODE = 'a'

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print('release-requested=true', file=outputs_file)
    - name: Check out src from Git
      if: >-
        steps.request-check.outputs.release-requested != 'true'
      uses: actions/checkout@v3
      with:
        fetch-depth: 0
        ref: ${{ github.event.inputs.release-committish }}
    - name: >-
        Calculate Python interpreter version hash value
        for use in the cache key
      if: >-
        steps.request-check.outputs.release-requested != 'true'
      run: |
        from hashlib import sha512
        from os import environ
        from pathlib import Path
        from sys import version

        FILE_APPEND_MODE = 'a'

        hash = sha512(version.encode()).hexdigest()

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(f'py-hash-key={hash}', file=outputs_file)
    - name: >-
        Calculate dependency files' combined hash value
        for use in the cache key
      if: >-
        steps.request-check.outputs.release-requested != 'true'
      id: calc-cache-key-files
      run: |
        from hashlib import sha512
        from os import environ
        from pathlib import Path

        FILE_APPEND_MODE = 'a'

        hashes_combo = sha512('-'.join((
          "${{ hashFiles('tox.ini')}}",
          "${{ hashFiles('pyproject.toml') }}",
          "${{ hashFiles('.pre-commit-config.yaml') }}",
          "${{ hashFiles('pytest.ini') }}",
        )).encode()).hexdigest()

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(f'files-hash-key={hashes_combo}', file=outputs_file)
    - name: Set up pip cache
      if: >-
        steps.request-check.outputs.release-requested != 'true'
      uses: actions/cache@v3
      with:
        path: >-
          ${{
              runner.os == 'Linux'
              && '~/.cache/pip'
              || '~/Library/Caches/pip'
          }}
        key: >-
          ${{ runner.os }}-pip-${{
          steps.calc-cache-key-py.outputs.py-hash-key }}-${{
          steps.calc-cache-key-files.outputs.files-hash-key }}
        restore-keys: |
          ${{ runner.os }}-pip-${{
              steps.calc-cache-key-py.outputs.py-hash-key
          }}-
          ${{ runner.os }}-pip-
          ${{ runner.os }}-
    - name: Drop Git tags from HEAD for non-tag-create events
      if: >-
        steps.request-check.outputs.release-requested != 'true'
      run: >-
        git tag --points-at HEAD
        |
        xargs git tag --delete
      shell: bash
    - name: Set up versioning prerequisites
      if: >-
        steps.request-check.outputs.release-requested != 'true'
      run: >-
        python -m
        pip install
        --user
        setuptools-scm
      shell: bash
    - name: Set the current dist version from Git
      if: steps.request-check.outputs.release-requested != 'true'
      id: scm-version
      run: |
        from os import environ
        from pathlib import Path

        import setuptools_scm

        FILE_APPEND_MODE = 'a'

        ver = setuptools_scm.get_version(
          ${{
              steps.unrequest-check.outputs.is-untagged-devel == 'true'
              && 'local_scheme="no-local-version"' || ''
          }}
        )
        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(f'dist-version={ver}', file=outputs_file)
    - name: Set the target Git tag
      id: git-tag
      run: |
        from os import environ
        from pathlib import Path

        FILE_APPEND_MODE = 'a'

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(
                "tag=v${{
                    steps.request-check.outputs.release-requested == 'true'
                    && github.event.inputs.release-version
                    || steps.scm-version.outputs.dist-version
                }}",
                file=outputs_file,
            )
    - name: Set the expected dist artifact names
      id: artifact-name
      run: |
        from os import environ
        from pathlib import Path

        FILE_APPEND_MODE = 'a'

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(
                "sdist=ansible_pygments-${{
                    steps.request-check.outputs.release-requested == 'true'
                    && github.event.inputs.release-version
                    || steps.scm-version.outputs.dist-version
                }}.tar.gz",
                file=outputs_file,
            )
            print(
                "wheel=ansible_pygments-${{
                    steps.request-check.outputs.release-requested == 'true'
                    && github.event.inputs.release-version
                    || steps.scm-version.outputs.dist-version
                }}-py3-none-any.whl",
                file=outputs_file,
            )

  build:
    name: >-
      🏗 sdist & wheel 📦
      v${{ needs.pre-setup.outputs.dist-version }}
    needs:
    - pre-setup
    runs-on: ubuntu-latest

    env:
      PY_COLORS: 1
      TOXENV: cleanup-dists,build-dists,metadata-validation

    steps:
    - name: Switch to using Python 3.11 by default
      uses: actions/setup-python@v4
      with:
        python-version: 3.11
    - name: >-
        Calculate Python interpreter version hash value
        for use in the cache key
      id: calc-cache-key-py
      run: |
        from hashlib import sha512
        from os import environ
        from pathlib import Path
        from sys import version

        FILE_APPEND_MODE = 'a'

        hash = sha512(version.encode()).hexdigest()

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(f'py-hash-key={hash}', file=outputs_file)
      shell: python
    - name: Get pip cache dir
      id: pip-cache
      run: >-
        echo "dir=$(python -m pip cache dir)" >> "${GITHUB_OUTPUT}"
    - name: Set up pip cache
      uses: actions/cache@v3
      with:
        path: ${{ steps.pip-cache.outputs.dir }}
        key: >-
          ${{ runner.os }}-pip-${{
          steps.calc-cache-key-py.outputs.py-hash-key }}-${{
          needs.pre-setup.outputs.cache-key-files }}
        restore-keys: |
          ${{ runner.os }}-pip-${{
              steps.calc-cache-key-py.outputs.py-hash-key
          }}-
          ${{ runner.os }}-pip-
    - name: Install tox
      run: >-
        python -m
        pip install
        --user
        tox

    - name: Grab the source from Git
      uses: actions/checkout@v3
      with:
        ref: ${{ github.event.inputs.release-committish }}
    - name: >-
        Update the project version to ${{
            needs.pre-setup.outputs.dist-version
        }}, in-tree
      run: >-
        sed -i
        's#^\(version\s\+=\s\+\).*#\1"${{
            needs.pre-setup.outputs.dist-version
        }}"#'
        pyproject.toml
    - name: Pre-populate tox env
      run: >-
        python -m
        tox
        -p auto
        --parallel-live -vvvv
        --skip-missing-interpreters false
        --notest
    - name: Build dists and verify their metadata
      run: >-
        python -m
        tox
        -p auto
        --parallel-live -vvvv
        --skip-missing-interpreters false

    - name: Store the Python package distributions
      uses: actions/upload-artifact@v3
      with:
        name: python-package-distributions
        # NOTE: Exact expected file names are specified here
        # NOTE: as a safety measure — if anything weird ends
        # NOTE: up being in this dir or not all dists will be
        # NOTE: produced, this will fail the workflow.
        path: |
          dist/${{ needs.pre-setup.outputs.sdist-artifact-name }}
          dist/${{ needs.pre-setup.outputs.wheel-artifact-name }}
        retention-days: 4

  tests:
    name: >-
      🐍${{
          matrix.python-version
      }} / ${{
          matrix.tested-artifact
      }} @ ${{
          matrix.os
      }}
    needs:
    - build
    - pre-setup  # transitive, for accessing settings
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os:
        - ubuntu-22.04
        - macos-latest
        - windows-latest
        python-version:
        - 3.11
        - pypy-3.9
        - 3.6
        - 3.8
        - 3.7
        - 3.9
        - >-
          3.10
        - pypy-3.6
        - ~3.12.0-0
        tested-artifact:
        - wheel
        - sdist
        exclude:
        # NOTE: GNU/Linux CPython 3.6 is not built for Ubuntu 22
        - os: ubuntu-22.04
          python-version: 3.6
        - os: windows-latest
          python-version: pypy-3.6
        - os: macos-latest
          python-version: pypy-3.6
        include:
        # NOTE: The last GNU/Linux CPython 3.6 available is built for Ubuntu 20
        # https://github.com/actions/python-versions/blob/6dd0b75/versions-manifest.json#L3956-L3960
        - os: ubuntu-20.04
          python-version: 3.6
          tested-artifact: wheel

    continue-on-error: >-
      ${{
          (
            fromJSON(needs.pre-setup.outputs.is-yolo-mode) ||
            (
              startsWith(matrix.python-version, '~')
            ) ||
            contains(matrix.python-version, 'alpha')
          ) && true || false
      }}

    env:
      ARTIFACT_NAME: >-
        ${{
            matrix.tested-artifact == 'wheel'
            && needs.pre-setup.outputs.wheel-artifact-name
            || needs.pre-setup.outputs.sdist-artifact-name
        }}
      TOXENV: python

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

    - name: Grab the source from Git
      uses: actions/checkout@v3
      with:
        ref: ${{ github.event.inputs.release-committish }}

    - name: Figure out if the interpreter ABI is stable
      id: py-abi
      run: |
        from os import environ
        from sys import version_info

        FILE_APPEND_MODE = 'a'

        is_stable_abi = version_info.releaselevel == 'final'

        with open(
                environ['GITHUB_OUTPUT'],
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(
                'is-stable-abi={is_stable_abi}'.
                format(is_stable_abi=str(is_stable_abi).lower()),
                file=outputs_file,
            )
      shell: python
    - name: >-
        Calculate Python interpreter version hash value
        for use in the cache key
      if: fromJSON(steps.py-abi.outputs.is-stable-abi)
      id: calc-cache-key-py
      run: |
        from hashlib import sha512
        from os import environ
        from pathlib import Path
        from sys import version

        FILE_APPEND_MODE = 'a'

        hash = sha512(version.encode()).hexdigest()

        with Path(environ['GITHUB_OUTPUT']).open(
                mode=FILE_APPEND_MODE,
        ) as outputs_file:
            print(f'py-hash-key={hash}', file=outputs_file)
      shell: python
    - name: Get pip cache dir
      if: fromJSON(steps.py-abi.outputs.is-stable-abi)
      id: pip-cache
      run: >-
        echo "dir=$(python -m pip cache dir)" >> "${GITHUB_OUTPUT}"
      shell: bash
    - name: Set up pip cache
      if: fromJSON(steps.py-abi.outputs.is-stable-abi)
      uses: actions/cache@v3
      with:
        path: ${{ steps.pip-cache.outputs.dir }}
        key: >-
          ${{ runner.os }}-pip-${{
          steps.calc-cache-key-py.outputs.py-hash-key }}-${{
          needs.pre-setup.outputs.cache-key-files }}
        restore-keys: |
          ${{ runner.os }}-pip-${{
              steps.calc-cache-key-py.outputs.py-hash-key
          }}-
          ${{ runner.os }}-pip-
    - name: Install tox
      # NOTE: Tox4 does not work correctly in our CI under Windows. Limiting the
      # NOTE: version is a workaround to be used until it's fixed.
      # Ref: https://github.com/tox-dev/tox/issues/2692
      run: >-
        python -m
        pip install
        --user
        "tox${{ runner.os == 'Windows' && ' < 4' || '' }}"

    - name: Patch tox.ini for Python 3.6 under Windows
      if: >-
        runner.os == 'Windows'
        && matrix.python-version == '3.6'
      run: >-
        sed -i
        's/^package_env\(\s\)\?=.*/package_env = py36-win-dummy/g'
        tox.ini
      shell: bash

    - name: Download all the dists
      uses: actions/download-artifact@v3
      with:
        name: python-package-distributions
        path: dist/

    - name: Pre-populate tox env
      run: >-
        ${{ runner.os == 'Windows' && 'chcp.com 65001 &&' || '' }}
        python -m
        tox
        --parallel auto
        --parallel-live
        --skip-missing-interpreters false
        --notest
        --installpkg 'dist/${{ env.ARTIFACT_NAME }}'

    - name: Run tests
      run: >-
        ${{ runner.os == 'Windows' && 'chcp.com 65001 &&' || '' }}
        python -m
        tox
        --parallel auto
        --parallel-live
        --skip-missing-interpreters false
        --skip-pkg-install
    - name: Produce markdown test summary from JUnit
      if: >-
        !cancelled()
      uses: test-summary/action@v2.0
      with:
        paths: .test-results/pytest/results.xml
    - name: Check if Cobertura XML coverage files exist
      if: >-
        !cancelled()
        && runner.os == 'Linux'
      id: coverage-files
      run: >-
        compgen -G '.test-results/pytest/cov.xml'
        && ( echo 'present=true' >> ${GITHUB_OUTPUT} )
        ;
        exit 0
      shell: bash
    - name: Produce markdown test summary from Cobertura XML
      if: steps.coverage-files.outputs.present == 'true'
      uses: irongut/CodeCoverageSummary@v1.3.0
      with:
        badge: true
        filename: .test-results/pytest/cov.xml
        format: markdown
        output: both
    # Ref: https://github.com/irongut/CodeCoverageSummary/issues/66
    - name: Append coverage results to Job Summary
      if: steps.coverage-files.outputs.present == 'true'
      run: >-
        cat code-coverage-results.md >> "${GITHUB_STEP_SUMMARY}"
    - name: Re-run the failing tests with maximum verbosity
      if: >-
        !cancelled()
        && failure()
      run: >-  # `exit 1` makes sure that the job remains red with flaky runs
        ${{ runner.os == 'Windows' && 'chcp.com 65001 &&' || '' }}
        python -m
        tox
        --parallel auto
        --parallel-live
        --skip-missing-interpreters false
        -vvvvv
        --skip-pkg-install
        --
        --no-cov -vvvvv --lf
        && exit 1
      shell: bash
    - name: Send coverage data to Codecov
      if: >-
        !cancelled()
      uses: codecov/codecov-action@v3
      with:
        files: .test-results/pytest/cov.xml
        flags: >-
          CI-GHA,
          OS-${{
            runner.os
          }},
          VM-${{
            matrix.os
          }},
          Py-${{
            steps.python-install.outputs.python-version
          }}

  check:  # This job does nothing and is only used for the branch protection
    if: always()

    needs:
    - lint
    - pre-setup  # transitive, for accessing settings
    - tests

    runs-on: ubuntu-latest

    steps:
    - name: Decide whether the needed jobs succeeded or failed
      uses: re-actors/alls-green@release/v1
      with:
        allowed-failures: >-
          ${{
            fromJSON(needs.pre-setup.outputs.is-yolo-mode)
            && 'lint, tests' || ''
          }}
        jobs: ${{ toJSON(needs) }}

  publish-pypi:
    name: Publish 🐍📦 ${{ needs.pre-setup.outputs.git-tag }} to PyPI
    needs:
    - check
    - pre-setup  # transitive, for accessing settings
    if: >-
      fromJSON(needs.pre-setup.outputs.release-requested)
    runs-on: ubuntu-latest

    permissions:
      id-token: write  # PyPI Trusted Publishing (OIDC)

    environment:
      name: pypi
      url: >-
        https://pypi.org/project/ansible-pygments/${{
          needs.pre-setup.outputs.dist-version
        }}

    steps:
    - name: Download all the dists
      uses: actions/download-artifact@v3
      with:
        name: python-package-distributions
        path: dist/
    - name: >-
        Publish 🐍📦 ${{ needs.pre-setup.outputs.git-tag }} to PyPI
      uses: pypa/gh-action-pypi-publish@release/v1

  publish-testpypi:
    name: Publish 🐍📦 ${{ needs.pre-setup.outputs.git-tag }} to TestPyPI
    needs:
    - check
    - pre-setup  # transitive, for accessing settings
    if: >-
      fromJSON(needs.pre-setup.outputs.is-untagged-devel)
      || fromJSON(needs.pre-setup.outputs.release-requested)
    runs-on: ubuntu-latest

    permissions:
      id-token: write  # PyPI Trusted Publishing (OIDC)

    environment:
      name: testpypi
      url: >-
        https://test.pypi.org/project/ansible-pygments/${{
          needs.pre-setup.outputs.dist-version
        }}

    steps:
    - name: Download all the dists
      uses: actions/download-artifact@v3
      with:
        name: python-package-distributions
        path: dist/
    - name: >-
        Publish 🐍📦 ${{ needs.pre-setup.outputs.git-tag }} to TestPyPI
      uses: pypa/gh-action-pypi-publish@release/v1
      with:
        repository-url: https://test.pypi.org/legacy/

...