# Note: Indentation here is of 2 spaces.

name: Generate release with ebooks


on:
  push:
    branches:
      - master

  workflow_dispatch: {}  # For manual switch.
# End of on.


jobs:
  release_ebooks:
    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout repo
        uses: actions/checkout@v3
        with:
          ref: master
      
      - name: Setup node
        uses: actions/setup-node@v3
        with:
          node-version: "latest"

      # HonKit is a maintained fork of GitBook.
      - name: Install honkit
        run: npm install honkit -g

      # APT install can take a long time due to installing dependencies,
      # so we will use caching.
      - name: Install calibre for ebook-convert
        uses: awalsh128/cache-apt-pkgs-action@latest
        with:
          packages: calibre

      # HonKit uses highlight.js for syntax highlighting, which doesn't have
      # "assembly" option, but has "x86asm". Currently, there is a better
      # "x86asmatt" option in main branch but it is unreleased.
      - name: Change highlighting code for honkit
        run: find . -type f -name "*.md" -exec sed -i 's/```assembly/```x86asm/g' {} \;

      # Create environment variables for convenience.
      # GITHUB_ENV stores the env variables between steps.
      - name: Get commit hash and create filename prefix
        run: |
          commit="$(git rev-parse --short HEAD)"
          echo "commit=$commit" >> $GITHUB_ENV
          echo "filename_prefix='linux-insides_$commit'" >> $GITHUB_ENV

      - name: Generate PDF
        run: honkit pdf ./ "./$filename_prefix.pdf"

      - name: Generate EPUB
        run: honkit epub ./ "./$filename_prefix.epub"

      - name: Generate MOBI
        run: honkit mobi ./ "./$filename_prefix.mobi"

      # Create a release on GitHub.
      - name: Create release
        uses: ncipollo/release-action@v1
        with:
          artifacts: "${{ env.filename_prefix }}.*"
          generateReleaseNotes: true
          allowUpdates: true
          artifactErrorsFailBuild: true
          tag: "${{ env.commit }}"
          commit: "master"
    # End of steps.
  # End of release_ebooks.
# End of jobs.


# End of file.