"""使用 LibreOffice soffice 命令行解析 DOCX 文件"""

import subprocess
import tempfile
import shutil
from pathlib import Path
from typing import Optional, Tuple


def parse(file_path: str) -> Tuple[Optional[str], Optional[str]]:
    """使用 LibreOffice soffice 解析 DOCX 文件"""
    # 检测 soffice 是否在 PATH 中
    soffice_path = shutil.which("soffice")
    if not soffice_path:
        return None, "LibreOffice 未安装"

    # 创建临时输出目录
    with tempfile.TemporaryDirectory() as temp_dir:
        temp_path = Path(temp_dir)
        input_path = Path(file_path)
        expected_output = temp_path / (input_path.stem + ".md")

        # 构建命令
        cmd = [
            soffice_path,
            "--headless",
            "--convert-to", "md",
            "--outdir", str(temp_path),
            str(input_path)
        ]

        # 执行命令，超时 60 秒
        try:
            result = subprocess.run(
                cmd,
                capture_output=True,
                text=True,
                timeout=60
            )
        except subprocess.TimeoutExpired:
            return None, "LibreOffice 转换超时 (60秒)"

        # 检查返回码
        if result.returncode != 0:
            return None, f"LibreOffice 转换失败 (code: {result.returncode})"

        # 检查输出文件是否存在
        output_file = None
        if expected_output.exists():
            output_file = expected_output
        else:
            # Fallback: 遍历目录找任意 .md 文件
            md_files = list(temp_path.glob("*.md"))
            if md_files:
                output_file = md_files[0]

        if not output_file:
            return None, "LibreOffice 未生成输出文件"

        # 读取输出内容
        content = output_file.read_text(encoding="utf-8", errors="replace")
        content = content.strip()

        if not content:
            return None, "LibreOffice 输出为空"

        return content, None