name: Deploy mdBook sites to GH Pages

on:
  push:
    branches: ["main"]
  workflow_dispatch:

permissions:
  contents: read
  pages: write
  id-token: write

# Allow one concurrent deployment
concurrency:
  group: "pages"
  cancel-in-progress: true

env:
  CARGO_TERM_COLOR: always
  # TODO: Update the language picker in index.hbs to link new languages.
  # TODO: As long as https://github.com/google/mdbook-i18n-helpers/issues/12 is not implemented, yet.
  # TODO: Activate when first translation is available
  # These are the languages in addition to 'en', which is the main language
  # LANGUAGES: xx

jobs:
  publish:
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Rust cache
        uses: ./.github/workflows/setup-rust-cache

      - name: Install mdbook
        uses: ./.github/workflows/install-mdbook

      - name: Build course in English
        run: |
          mdbook build -d book
          mv book/html/* book/pandoc/pdf/rust-design-patterns.pdf book/
          rm -r book/html book/pandoc

      # TODO: Activate when first translation is available
      # - name: Build all translations
      #   run: |
      #     for po_lang in ${{ env.LANGUAGES }}; do
      #         echo "::group::Building $po_lang translation"
      #         MDBOOK_BOOK__LANGUAGE=$po_lang \
      #         MDBOOK_OUTPUT__HTML__SITE_URL=/patterns/$po_lang/ \
      #         mdbook build -d book/$po_lang
      #         echo "::endgroup::"
      #     done

      - name: Setup Pages
        id: pages
        uses: actions/configure-pages@v4

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: ./book

      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4