update_locales.yml

name: update_locales

on: pull_request

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  update_locales:
    # Skip for forks which have no access to secrets (PAT)
    if: github.event.pull_request.head.repo.fork == false
    runs-on: ubuntu-22.04
    defaults:
      run:
        shell: sh
    steps:

    - uses: actions/setup-python@v4
      with:
        python-version: '3.x'
        check-latest: true

    - name: Install dependencies
      run: |
        python3 -m pip install -U babel jinja2 &
        sudo apt-get -q update
        sudo DEBIAN_FRONTEND='noninteractive' apt-get -qq --no-install-recommends install gettext

    - uses: actions/checkout@v3
      with:
        ref: ${{ github.head_ref }}
        # https://github.com/peter-evans/create-pull-request/issues/48
        token: ${{ secrets.GH_PAT }}

    - name: Generate backend template
      run: |
        pybabel extract -F l10n/babel.cfg -o motioneye/locale/motioneye.pot motioneye/
        # Remove trailing empty line to satisfy pre-commit
        sed -i '${/^$/d}' motioneye/locale/motioneye.pot

    - name: Generate frontend template
      run: xgettext --no-wrap --from-code=UTF-8 -o motioneye/locale/motioneye.js.pot motioneye/static/js/*.js l10n/*.js

    - name: Generate frontend locales
      run: |
        for i in motioneye/locale/*/LC_MESSAGES/motioneye.js.po
        do
            lang=${i#motioneye/locale/}
            lang=${lang%/LC_MESSAGES/motioneye.js.po}
            echo "Generating motioneye.$lang.json"
            l10n/po2json "$i" "motioneye/static/js/motioneye.$lang.json"
        done

    - name: Commit changes
      run: |
        git diff -I '^"POT-Creation-Date: ' --exit-code && exit 0
        git config user.name 'github-actions[bot]'
        git config user.email 'github-actions[bot]@users.noreply.github.com'
        git add -A
        git commit -m 'Update translation files'
        git push