name: Test mdbook chapters

on:
  pull_request:
  push:
    branches:
      - main

env:
  CARGO_TERM_COLOR: always

jobs:
  mdbook-test:
    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: Test code snippets
        run: mdbook test

  # TODO: Activate when first translation is available
  # i18n-helpers:
  #   runs-on: ubuntu-latest
  #   steps:
  #     - name: Checkout
  #       uses: actions/checkout@v4

  #     - name: Install Gettext
  #       run: sudo apt install gettext

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

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

  #     - name: Generate po/messages.pot
  #       run: mdbook build -d po
  #       env:
  #         MDBOOK_OUTPUT: '{"xgettext": {"pot-file": "messages.pot"}}'

  #     - name: Test messages.pot
  #       run: msgfmt --statistics -o /dev/null po/messages.pot

  #     - name: Expand includes without translation
  #       run: mdbook build -d expanded
  #       env:
  #         MDBOOK_OUTPUT: '{"markdown": {}}'

  #     - name: Expand includes with no-op translation
  #       run: mdbook build -d no-op
  #       env:
  #         MDBOOK_OUTPUT: '{"markdown": {}}'
  #         MDBOOK_PREPROCESSOR__GETTEXT__PO_FILE: po/messages.pot

  #     - name: Compare no translation to no-op translation
  #       run: diff --color=always --unified --recursive expanded no-op

  # find-translations:
  #   runs-on: ubuntu-latest
  #   outputs:
  #     languages: ${{ steps.find-translations.outputs.languages }}
  #   steps:
  #     - name: Checkout
  #       uses: actions/checkout@v4

  #     - name: Find translations
  #       id: find-translations
  #       shell: python
  #       run: |
  #         import os, json, pathlib
  #         languages = [p.stem for p in pathlib.Path("po").iterdir() if p.suffix == ".po"]
  #         github_output = open(os.environ["GITHUB_OUTPUT"], "a")
  #         github_output.write("languages=")
  #         json.dump(sorted(languages), github_output)

  # translations:
  #   runs-on: ubuntu-latest
  #   needs:
  #     - find-translations
  #   strategy:
  #     matrix:
  #       language: ${{ fromJSON(needs.find-translations.outputs.languages) }}
  #   env:
  #     MDBOOK_BOOK__LANGUAGE: ${{ matrix.language }}
  #   steps:
  #     - name: Checkout
  #       uses: actions/checkout@v4

  #     - name: Install Gettext
  #       run: sudo apt install gettext

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

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

  #     - name: Test ${{ matrix.language }} translation
  #       run: msgfmt --statistics -o /dev/null po/${{ matrix.language }}.po

  #     - name: Build book with ${{ matrix.language }} translation
  #       run: mdbook build

  #     - name: Upload ${{ matrix.language }} translation
  #       uses: actions/upload-artifact@v3
  #       with:
  #         name: rust-design-patterns-${{ matrix.language }}
  #         path: book/

  #     - name: Test code snippets with ${{ matrix.language }} translation
  #       run: mdbook test