name: Documentation

on:
  push:
    branches: [ '*' ]
  pull_request:
    branches: [ master ]

jobs:
  documentation:
    runs-on: ubuntu-18.04
    steps:
      - uses: actions/checkout@v2
      - name: Use Node.js
        uses: actions/setup-node@v1
        with: { node-version: '10' }
      - name: Setup tools
        run: |
          sudo sh -c "echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | debconf-set-selections"
          sudo apt update && sudo apt install -y calibre msttcorefonts
          npm install gitbook-cli -g
          gitbook fetch 3.2.3 && npm i npm@3.10.10 --prefix=~/.gitbook/versions/3.2.3/ # fixing https://travis-ci.org/github/CopterExpress/clover/jobs/766541125#L932
          npm install markdownlint-cli -g
          npm install svgexport -g
          gitbook -V
          markdownlint -V
      - name: Run markdownlint
        run: markdownlint docs
      - name: Check Assets
        run: |
          ./check_assets_size.py
          ./check_unused_assets.py
      - name: Build GitBook
        run: |
         gitbook install
         gitbook build
      - name: Generate PDF
        if: ${{ github.repository == 'CopterExpress/clover' && github.event_name == 'push' && github.ref == 'refs/heads/master' }}
        run: |
          for i in 1 2 3 4; do gitbook pdf ./ _book/clover.pdf && break || sleep 1; done
          sudo apt-get -q install ghostscript
          gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/default -dNOPAUSE -dQUIET -dBATCH -dDetectDuplicateImages -dCompressFonts=true -r150 -sOutputFile=_book/clover_ru_compressed.pdf _book/clover_ru.pdf
          gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/default -dNOPAUSE -dQUIET -dBATCH -dDetectDuplicateImages -dCompressFonts=true -r150 -sOutputFile=_book/clover_en_compressed.pdf _book/clover_en.pdf
          rm _book/clover_ru.pdf && mv _book/clover_ru_compressed.pdf _book/clover_ru.pdf
          rm _book/clover_en.pdf && mv _book/clover_en_compressed.pdf _book/clover_en.pdf
          ls -lah _book/clover*.pdf
      - name: Deploy
        uses: JamesIves/github-pages-deploy-action@4.1.3
        if: ${{ github.repository == 'CopterExpress/clover' && github.event_name == 'push' && github.ref == 'refs/heads/master' }}
        with:
          branch: gh-pages
          folder: _book
          repository-name: CopterExpress/clover.coex.tech
          token: ${{ secrets.DOCS_DEPLOY_TOKEN }}
          clean: true
          single-commit: true # to avoid multiple copies of large pdf files