ci.yml

---
name: CI

on:
  push:
    branches: [main]
    tags: ["*"]
  pull_request:
  workflow_dispatch:

env:
  FORCE_COLOR: "1"
  PIP_DISABLE_PIP_VERSION_CHECK: "1"
  PIP_NO_PYTHON_VERSION_WARNING: "1"

permissions: {}

jobs:
  build-package:
    name: Build & verify package
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          persist-credentials: false
      - uses: hynek/build-and-inspect-python-package@v2
        id: baipp

    outputs:
      # Used to define the matrix for tests below. The value is based on
      # packaging metadata (trove classifiers).
      supported-python-versions: ${{ steps.baipp.outputs.supported_python_classifiers_json_array }}

  tests:
    name: Tests & Mypy API on ${{ matrix.python-version }}
    runs-on: ubuntu-latest
    needs: build-package

    strategy:
      fail-fast: false
      matrix:
        # Created by the build-and-inspect-python-package action above.
        python-version: ${{ fromJson(needs.build-package.outputs.supported-python-versions) }}
    env:
      PYTHON: ${{ matrix.python-version }}

    steps:
      - name: Download pre-built packages
        uses: actions/download-artifact@v4
        with:
          name: Packages
          path: dist
      - run: |
          tar xf dist/*.tar.gz --strip-components=1
          rm -rf src
      - uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}
          allow-prereleases: true
      - uses: hynek/setup-cached-uv@v2

      - run: >
          uvx --with=tox-uv
          tox run
          --installpkg dist/*.whl
          -e mypy-api

      - run: >
          uvx --with=tox-uv
          tox run
          --installpkg dist/*.whl
          -f py$(echo $PYTHON | tr -d .)

      - name: Upload coverage data
        uses: actions/upload-artifact@v4
        with:
          name: coverage-data-${{ matrix.python-version }}
          path: .coverage.*
          include-hidden-files: true
          if-no-files-found: ignore

  coverage:
    runs-on: ubuntu-latest
    needs: tests

    steps:
      - name: Download pre-built packages
        uses: actions/download-artifact@v4
        with:
          name: Packages
          path: dist
      - run: tar xf dist/*.tar.gz --strip-components=1
      - uses: actions/setup-python@v5
        with:
          python-version-file: .python-version-default
      - uses: hynek/setup-cached-uv@v2

      - name: Download coverage data
        uses: actions/download-artifact@v4
        with:
          pattern: coverage-data-*
          merge-multiple: true

      - name: Combine coverage and fail if it's <100%.
        run: |
          uv tool install coverage

          coverage combine
          coverage html --skip-covered --skip-empty

          # Report and write to summary.
          coverage report --format=markdown >> $GITHUB_STEP_SUMMARY

          # Report again and fail if under 100%.
          coverage report --fail-under=100

      - name: Upload HTML report if check failed.
        uses: actions/upload-artifact@v4
        with:
          name: html-report
          path: htmlcov
        if: ${{ failure() }}

  mypy:
    name: Mypy Codebase
    runs-on: ubuntu-latest
    needs: build-package

    steps:
      - name: Download pre-built packages
        uses: actions/download-artifact@v4
        with:
          name: Packages
          path: dist
      - run: tar xf dist/*.tar.gz --strip-components=1
      - uses: actions/setup-python@v5
        with:
          python-version-file: .python-version-default
          allow-prereleases: true
      - uses: hynek/setup-cached-uv@v2

      - run: >
          uvx --with=tox-uv
          tox run
          -e mypy-pkg

  docs:
    name: Build docs & run doctests
    runs-on: ubuntu-latest
    needs: build-package

    steps:
      - name: Download pre-built packages
        uses: actions/download-artifact@v4
        with:
          name: Packages
          path: dist
      - run: tar xf dist/*.tar.gz --strip-components=1
      - uses: actions/setup-python@v5
        with:
          # Keep in sync with tox.ini/docs & .readthedocs.yaml
          python-version: "3.12"
      - uses: hynek/setup-cached-uv@v2

      - run: >
          uvx --with=tox-uv
          tox run
          -e docs

  install-dev:
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]

    name: Verify dev env
    runs-on: ${{ matrix.os }}

    steps:
      - uses: actions/checkout@v4
        with:
          persist-credentials: false
      - uses: actions/setup-python@v5
        with:
          cache: pip
          python-version-file: .python-version-default

      - run: python -Im pip install -e .[dev]
      - run: python -Ic 'import pem; print(pem.__version__)'

  required-checks-pass:
    name: Ensure everything required is passing for branch protection.
    if: always()
    runs-on: ubuntu-latest
    needs:
      - coverage
      - docs
      - install-dev

    steps:
      - name: Decide whether the needed jobs succeeded or failed
        uses: re-actors/alls-green@release/v1
        with:
          jobs: ${{ toJSON(needs) }}