"""使用 trafilatura 解析 HTML"""

from typing import Optional, Tuple


def parse(file_path: str) -> Tuple[Optional[str], Optional[str]]:
    """使用 trafilatura 解析 HTML 文件"""
    try:
        import trafilatura
    except ImportError:
        return None, "trafilatura 库未安装"

    try:
        with open(file_path, 'r', encoding='utf-8') as f:
            html_content = f.read()
    except FileNotFoundError:
        return None, f"文件不存在: {file_path}"
    except Exception as e:
        return None, f"读取文件失败: {str(e)}"

    try:
        markdown_content = trafilatura.extract(
            html_content,
            output_format="markdown",
            include_formatting=True,
            include_links=True,
            include_images=False,
            include_tables=True,
            favor_recall=True,
            include_comments=True,
        )
        if markdown_content is None:
            return None, "trafilatura 返回 None"
        if not markdown_content.strip():
            return None, "解析内容为空"
        return markdown_content, None
    except Exception as e:
        return None, f"trafilatura 解析失败: {str(e)}"