name: CI

on:
  push:
  pull_request:
  workflow_dispatch:
  schedule:
    - cron: '0 2 * * *'

jobs:
  Build:
    runs-on: ubuntu-20.04

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        id: setup-python
        with:
          python-version: 3.10
          cache: pipenv

      - name: Install pipenv
        run: pip install pipenv

      - name: Install dependencies
        if: steps.setup-python.outputs.cache-hit != 'true'
        run: pipenv install --deploy --dev

      - name: Build gettext strings
        run: pipenv run sphinx-build -b gettext source build/locale

      - name: Push and Pull strings from the Crowdin
        uses: crowdin/github-action@v1
        if: github.ref == 'refs/heads/master'
        with:
          token: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}

          upload_sources: ${{ github.event_name == 'push' }}

          download_translations: true
          push_translations: false
          download_language: en # Temporary limit only to English

      - name: Fix permissions to the locale dir
        if: github.ref == 'refs/heads/master'
        run: sudo chown -R $USER:$USER locale

      - name: Build docs
        run: pipenv run python build-multilang.py

      - name: Upload build artifacts
        uses: actions/upload-artifact@v4
        with:
          name: build
          path: build
          retention-days: 7

      - id: detect-diffs
        name: Detect diffs
        if: github.event_name == 'schedule'
        run: |
          git fetch origin
          gh_pages_exists=$(git ls-remote --heads origin gh-pages)
          if [[ -z ${gh_pages_exists} ]]; then
            echo "::warning::gh_pages branch doesn't exists"
            echo "should-continue=false" >> $GITHUB_OUTPUT
            exit
          fi

          tmp_dir=$(mktemp -du)
          git worktree add "$tmp_dir" origin/gh-pages

          diff_detected=false
          for l in locale/*; do
            l=$(basename $l)
            if ! diff -qbB -- "build/$l" "$tmp_dir/$l" > /dev/null; then
              diff_detected=true
              break
            fi
          done

          echo "should-continue=$diff_detected" >> $GITHUB_OUTPUT

      - name: Deploy to the GitHub Pages
        uses: JamesIves/github-pages-deploy-action@v4
        if: |
          (github.event_name == 'push' && github.ref == 'refs/heads/master') ||
          (github.event_name == 'workflow_dispatch' && github.ref == 'refs/heads/master') ||
          (github.event_name == 'schedule' && steps.detect-diffs.outputs.should-continue == 'true')
        with:
          branch: gh-pages
          folder: build
          single-commit: true