name: Deploy Sphinx Documentation

on:
  pull_request:
    types: [closed]
    branches: [master]

jobs:
  deploy:
    # 只在PR被成功merge到master时运行
    if: github.event.pull_request.merged == true && github.base_ref == 'master'
    runs-on: linux
    
    steps:
      # 第一步：获取master分支最新代码
      - name: Fetch latest master branch code
        run: |
          echo "=== Fetching latest master branch code ==="
          
          # 确保目录存在
          if [ ! -d "/home/ly0kos/work/test_env" ]; then
            echo "Cloning repository..."
            git clone http://localhost:3000/yuysh/Manlink_Doc.git /home/ly0kos/work/test_env
          fi
          
          cd /home/ly0kos/work/test_env
          
          # 清理任何未提交的更改
          git reset --hard
          git clean -fd
          
          # 获取所有远程更新
          git fetch --all --prune
          
          # 切换到master分支并获取最新代码
          git checkout master
          git pull origin master --force
          
          echo "✓ Latest master code fetched"
          echo "Current commit: $(git log --oneline -1)"

      # 第二步：复用生产虚拟环境
      - name: Reuse or update production Python environment
        run: |
          echo "Setting up production Python environment"
          cd /home/ly0kos/work/test_env
          
          # 检查虚拟环境是否存在
          if [ ! -d ".venv-prod" ]; then
            echo "Creating new production virtual environment..."
            python -m venv .venv-prod
            source .venv-prod/bin/activate
            pip install --upgrade pip
            # 安装基础依赖
            pip install sphinx sphinx-rtd-theme
          else
            echo "Reusing existing production virtual environment..."
            source .venv-prod/bin/activate
          fi
          
          # 检查并更新依赖
          if [ -f "requirements.txt" ]; then
            echo "Checking for dependency updates in production..."
            REQ_MOD_TIME=$(stat -c %Y requirements.txt 2>/dev/null || echo 0)
            VENV_MOD_TIME=$(cat .venv-prod/last_update.txt 2>/dev/null || echo 0)
            
            if [ $REQ_MOD_TIME -gt $VENV_MOD_TIME ]; then
              echo "Production requirements updated, installing new dependencies..."
              pip install -r requirements.txt
              echo $REQ_MOD_TIME > .venv-prod/last_update.txt
            else
              echo "No changes in production requirements, skipping installation"
            fi
          fi
          
          # 显示环境信息
          echo "Production environment ready:"
          pip list | grep sphinx

      # 第三步：从master分支构建文档
      - name: Build documentation from master
        run: |
          echo "=== Building production documentation from master ==="
          cd /home/ly0kos/work/test_env
          source .venv-prod/bin/activate
          
          # 清理旧构建
          rm -rf build/
          
          # 构建文档
          sphinx-build -b html source build -v -j 4
          echo "✓ Production build completed"

      # 第四步：部署到Web服务器
      - name: Deploy to web server
        run: |
          echo "=== Deploying to production web server ==="
          cd /home/ly0kos/work/test_env
          
          echo "[INFO] Removing old files..."
          sudo rm -rf /var/www/docs_dev/*
          echo "[INFO] Copying new files..."
          sudo cp -r build/* /var/www/docs_dev/
          
          # 设置正确的文件权限
          sudo chown -R www-data:www-data /var/www/docs_dev/
          sudo chmod -R 755 /var/www/docs_dev/
          
          echo "✓ Documentation deployed to /var/www/docs_dev/"

      # 第五步：清理PR预览文件
      - name: Cleanup PR previews
        run: |
          echo "Cleaning up PR preview files for branch: ${{ github.head_ref }}"
          
          # 清理预览文件（保留虚拟环境）
          preview_dir="/home/ly0kos/work/test_env/pr-builds/${{ github.head_ref }}"
          if [ -d "$preview_dir" ]; then
            rm -rf "$preview_dir"
            echo "Removed preview for PR branch: ${{ github.head_ref }}"
          fi

      # 第六步：验证部署
      - name: Verify deployment
        run: |
          echo "Production deployment completed successfully!"
          echo "Web server contents:"
          ls -la /var/www/docs_dev/ | head -10