name: Pull Translations from Transifex

on:
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:
permissions:
  contents: write

jobs:
  update-translation:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        version: [ '3.15', '3.14', '3.13', '3.12', '3.11', '3.10' ]
    steps:
      - uses: styfle/cancel-workflow-action@main
        with:
          access_token: ${{ secrets.GITHUB_TOKEN }}
      - uses: actions/setup-python@master
        with:
          python-version: '3.12'
      - name: Install Dependencies
        run: |
          set -euxo pipefail
          sudo apt-get update
          sudo apt-get install -y gettext curl tar
          python -m pip install --upgrade pip
          pip install requests cogapp polib transifex-python sphinx-intl blurb six

          # Install tx deterministically with retries instead of piping installer script.
          TX_URL="https://github.com/transifex/cli/releases/latest/download/tx-linux-amd64.tar.gz"
          curl -fL --retry 5 --retry-delay 2 --retry-connrefused "$TX_URL" -o /tmp/tx.tar.gz
          tar -xzf /tmp/tx.tar.gz -C /tmp
          sudo install -m 0755 /tmp/tx /usr/local/bin/tx
          command -v tx
          tx --version
      - uses: actions/checkout@master
        with:
          ref: ${{ matrix.version }}
          fetch-depth: 0
      - run: curl -fL -o transifex-util.py https://raw.githubusercontent.com/python-docs-translations/transifex-automations/master/sample-workflows/transifex-util.py
      - run: chmod +x transifex-util.py
      - name: Patch helper for cross-version Doc Makefile compatibility
        run: |
          python - <<'PY'
          from pathlib import Path

          p = Path("transifex-util.py")
          old = '_call("make -C cpython/Doc/ gettext")'
          new = '_call("make -C cpython/Doc/ venv")\n    _call("make -C cpython/Doc/ JOBS=1 gettext || make -C cpython/Doc/ JOBS=1 build BUILDER=gettext")'
          s = p.read_text()
          if old not in s:
              raise SystemExit("Expected pattern was not found in transifex-util.py")
          p.write_text(s.replace(old, new))
          PY
      - run: ./transifex-util.py recreate_tx_config --language ru --project-slug python-newest --version ${{ matrix.version }}
        env:
          TX_TOKEN: ${{ secrets.TX_TOKEN }}
      - run: ./transifex-util.py fetch --language ru --pull-options="--mode reviewed" --project-slug python-newest --version ${{ matrix.version }}
        env:
          TX_TOKEN: ${{ secrets.TX_TOKEN }}
      - run: ./transifex-util.py delete_obsolete_files --language ru --project-slug python-newest --version ${{ matrix.version }}
      - name: Set up Git
        run: |
          git config --local user.email github-actions@github.com
          git config --local user.name "GitHub Action's update-translation job"
      - run: git add . ':!transifex-util.py'
      - name: Filter files
        run: |
          ! git diff --cached -I'^"POT-Creation-Date: ' \
                                -I'^"Language-Team: ' \
                                -I'^# ' -I'^"Last-Translator: ' \
                                --exit-code \
            && echo "SIGNIFICANT_CHANGES=1" >> $GITHUB_ENV || exit 0
      - run: git commit -m 'Update translation from Transifex'
        if: env.SIGNIFICANT_CHANGES == '1'
      - uses: ad-m/github-push-action@master
        if: env.SIGNIFICANT_CHANGES == '1'
        with:
          branch: ${{ matrix.version }}
          github_token: ${{ secrets.GITHUB_TOKEN }}