.github/workflows/pr_build.yml

name: PR build for ver 3.8

on:
  pull_request:
    branches: [ "3.9" ]
    types:
      - opened      # open PR
      - synchronize # update the branch which pulled from
      - reopened    # re-open PR

jobs:
  pr_build:
    runs-on: ubuntu-latest

    steps:
    - name: Prepare environment variables
      run: |
        ref=${GITHUB_REF#refs/pull/}
        pr_num=${ref%/merge}
        
        echo "::set-env name=PR_BUILD_ID::${GITHUB_BASE_REF}/${pr_num}"
        echo "::set-env name=DOCS_BASE_DIR::build/html"
        echo "::set-env name=DOCS_OUTPUT_DIR::build/html/${GITHUB_BASE_REF}/${pr_num}"
          
    - name: Checkout cpython repository
      uses: actions/checkout@v2
      with:
        repository: python-doc-ja/cpython-doc-catalog
        ref: catalog-3.8
        path: cpython


    - name: Checkout PR branch
      uses: actions/checkout@v2
      with: 
        ref: ${{ github.ref }}
        path: cpython/Doc/locales/ja/LC_MESSAGES

    - name: Checkout GitHub Pages
      uses: actions/checkout@v2
      with:
        ref: gh-pages
        path: build/html

    - name: Install dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y --no-install-recommends python3-venv

    - name: Build docs
      run: |
        cd cpython/Doc
        make venv
        rm -rf ${DOCS_OUTPUT_DIR}
        make build ALLSPHINXOPTS="-b html -D language=ja -D gettext_compact=0 -E -d build/doctrees . ${GITHUB_WORKSPACE}/${DOCS_OUTPUT_DIR}"
        ls -l ${GITHUB_WORKSPACE}/${DOCS_OUTPUT_DIR}

    - name: Publish docs
      run: |
        cd ${GITHUB_WORKSPACE}/${DOCS_BASE_DIR}
        git config --local user.name "Autobuild bot on GitHub Actions"
        git config --local user.email "githubaction-build-bot@example.com"
        git add .
        if [ $(git status -s | wc -l) -eq 0 ]; then echo "nothing to commit"; exit 0; fi
        git commit -m 'update html'
        git push --quiet "https://${{ secrets.GITHUB_TOKEN }}@github.com/${GITHUB_REPOSITORY}.git" gh-pages:gh-pages

    - name: Notify the URL of the built docs
      uses: thollander/actions-comment-pull-request@master
      with:
        message: 'Please check the built documentation!!! https://python.github.io/python-docs-ja/${{ env.PR_BUILD_ID }}'
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}