name: Internationalization check

on:
  push:
    branches: [master, features]
  pull_request:
    branches: [master, features]

jobs:
  internationalization:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4
    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: '3.x'
    - name: Install dependencies
      run: |
        pip install --upgrade pip poetry
        poetry install
    - name: Check i18n
      run: |
        poetry run pybabel extract --output=/tmp/kosmorro-messages.pot kosmorro
        echo
        diff=$(diff kosmorro/locales/messages.pot /tmp/kosmorro-messages.pot | grep '^>')
        n=$(echo "$diff" | grep -Ev '> "(POT-Creation-Date)|(Generated-By): ' | wc -l)

        if [ "$n" -ne "0" ]; then
          echo "❌ The messages file is not up-to-date!"
          echo "   Please run the following command to fix this:"
          echo
          echo "     make messages"
          exit 1
        fi

        echo "✔ Messages file up-to-date."