name: Deploy Docs

on:
  push:
    branches:
      - docs/format_optimization
      - Document
      - main
  workflow_dispatch:

permissions:
  contents: write

concurrency:
  group: gh-pages
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest

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

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r docs/en/requirements.txt -r docs/zh/requirements.txt jieba

      - name: Build multilingual HTML
        run: |
          # Build English
          sphinx-build -b html docs/en docs/en/_build/html
          # Build Chinese
          sphinx-build -b html docs/zh docs/zh/_build/html
          # Merge outputs to unified publish directory
          mkdir -p site/en site/zh
          cp -r docs/en/_build/html/. site/en/
          cp -r docs/zh/_build/html/. site/zh/
          # Root redirect to English (可根据需要改成 zh)
          echo '<!DOCTYPE html><html><head><meta http-equiv="refresh" content="0; url=en/index.html"></head><body>Redirecting...</body></html>' > site/index.html
          touch site/.nojekyll

      - name: Deploy to gh-pages branch
        uses: peaceiris/actions-gh-pages@v4
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_branch: gh-pages
          publish_dir: site