name: Test

on:
  pull_request:
  push:
    branches:
      - main

env:
  CARGO_TERM_COLOR: always

jobs:
  mdbook:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup Rust cache
        uses: Swatinem/rust-cache@v2

      - name: Install mdbook
        run: cargo install mdbook --version 0.4.25

      - name: Install mdbook-svgbob
        run: cargo install mdbook-svgbob --version 0.2.1

      - name: Test code snippets
        run: mdbook test

  cargo:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup Rust cache
        uses: Swatinem/rust-cache@v2

      - name: Test Rust code
        run: cargo test

      - name: Test i18n-helpers
        run: cargo test
        working-directory: i18n-helpers

  i18n-helpers:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup Rust cache
        uses: Swatinem/rust-cache@v2

      - name: Install Gettext
        run: sudo apt install gettext

      - name: Install mdbook
        run: cargo install mdbook --version 0.4.25

      - name: Install mdbook-svgbob
        run: cargo install mdbook-svgbob --version 0.2.1

      - name: Install i18n-helpers
        run: cargo install --path i18n-helpers --locked

      - 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 -r expanded no-op

  translations:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        language:
          - da
    env:
      MDBOOK_BOOK__LANGUAGE: ${{ matrix.language }}
      MDBOOK_PREPROCESSOR__GETTEXT__PO_FILE: po/${{ matrix.language }}.po
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup Rust cache
        uses: Swatinem/rust-cache@v2

      - name: Install Gettext
        run: sudo apt install gettext

      - name: Install mdbook
        run: cargo install mdbook --version 0.4.25

      - name: Install mdbook-svgbob
        run: cargo install mdbook-svgbob --version 0.2.1

      - name: Install i18n-helpers
        run: cargo install --path i18n-helpers --locked

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

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

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