name: "Documentation"

on:
    pull_request:
    push:
        branches:
            - '3.x'

jobs:
    build:
        name: "Build"

        runs-on: ubuntu-latest

        steps:
            -   name: "Checkout code"
                uses: actions/checkout@v2

            -   name: "Set up Python 3.7"
                uses: actions/setup-python@v1
                with:
                    python-version: '3.7' # Semantic version range syntax or exact version of a Python version

            -   name: "Display Python version"
                run: python -c "import sys; print(sys.version)"

            -   name: "Install Sphinx dependencies"
                run: sudo apt-get install python-dev build-essential

            -   name: "Cache pip"
                uses: actions/cache@v2
                with:
                    path: ~/.cache/pip
                    key: ${{ runner.os }}-pip-${{ hashFiles('_build/.requirements.txt') }}
                    restore-keys: |
                        ${{ runner.os }}-pip-

            -   name: "Install Sphinx + requirements via pip"
                working-directory: "doc"
                run: pip install -r _build/.requirements.txt

            -   name: "Build documentation"
                working-directory: "doc"
                run: make -C _build SPHINXOPTS="-nqW -j auto" html

    doctor-rst:
        name: "DOCtor-RST"

        runs-on: ubuntu-latest

        steps:
            - name: "Checkout code"
              uses: actions/checkout@v2

            - name: "Run DOCtor-RST"
              uses: docker://oskarstark/doctor-rst
              with:
                  args: --short
              env:
                  DOCS_DIR: 'doc/'