# Copyright 2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# A reusable workflow to build Packager docs.  Leaves docs output in the
# "gh-pages" folder.  Only runs in Linux due to the dependency on doxygen,
# which we install with apt.
name: Build Docs

# Runs when called from another workflow.
on:
  workflow_call:
    inputs:
      ref:
        required: true
        type: string

jobs:
  docs:
    name: Build docs
    runs-on: ubuntu-latest

    steps:
      - name: Install dependencies
        run: |
          sudo apt install -y doxygen
          python3 -m pip install \
              sphinxcontrib.plantuml \
              recommonmark \
              cloud_sptheme \
              breathe

      - name: Checkout code
        uses: actions/checkout@v2
        with:
          ref: ${{ inputs.ref }}

      - name: Generate docs
        run: |
          mkdir -p gh-pages
          mkdir -p build

          # Doxygen must run before Sphinx.  Sphinx will refer to
          # Doxygen-generated output when it builds its own docs.
          doxygen docs/Doxyfile

          # Now build the Sphinx-based docs.
          make -C docs/ html

          # Now move the generated outputs.
          cp -a build/sphinx/html gh-pages/html
          cp -a build/doxygen/html gh-pages/docs
          cp docs/index.html gh-pages/index.html