#!/usr/bin/env python3
"""
基于 mcp_docx.py 封装的 MCP 服务器。

暴露主要 MCP 工具：
- list_docx_images：列出 DOCX 中的图片信息
- edit_docx：       进行文本替换 / 关键字上色（与 HTTP POST /edit_docx 能力一致）

额外提供 HTTP 文件接口（仅在 http 模式下可用）：
- POST /upload:    上传文件到服务器
- GET /files/{filename}: 下载服务器上的文件

当前推荐的传输方式：
- stdio（本地调试）
- streamable-http（远程 HTTP，路径固定为 /mcp，推荐）

用法：
  # 本地 stdio 模式（默认）
  python mcp_docx_server.py --transport stdio

  # HTTP 远程模式（推荐，默认 0.0.0.0:8080，对外暴露 /mcp）
  python mcp_docx_server.py --transport http
  python mcp_docx_server.py --transport http --host 0.0.0.0 --port 8080

  # 客户端连接地址（http 模式）：
  #   MCP 端点:    http://<host>:<port>/mcp

注意：底层仍然完全复用 mcp_docx.py 中的逻辑，只是通过 MCP SDK 对外提供。
"""

import argparse
import hashlib
import json
import os
import shutil
import tempfile
import time
import urllib.parse
import zipfile
from contextlib import contextmanager
from datetime import datetime, date, timedelta
from typing import Any, Dict, List, Optional

import requests
from lxml import etree
from mcp.server.fastmcp import FastMCP
from mcp.server.transport_security import TransportSecuritySettings

from mcp_docx import (
    W,
    _normalize_newlines,
    get_images_info,
    process,
    _parse_span_replacement,
    paragraph_replace,
    unpack,
    pack,
)
# HTTP 远程模式：添加文件上传下载路由
from starlette.responses import FileResponse, JSONResponse
from starlette.background import BackgroundTask
from starlette.requests import Request
from starlette.responses import FileResponse, JSONResponse

if os.name == "nt":
    import msvcrt
else:
    import fcntl

_disable_dns_rebinding = True

if _disable_dns_rebinding:
    # 参考 python-sdk 官方文档：关闭 DNS rebinding 防护（适合本地或已由外层网关做安全控制的环境）
    # https://github.com/modelcontextprotocol/python-sdk/issues/1798
    transport_security = TransportSecuritySettings(
        enable_dns_rebinding_protection=False,
    )
else:
    # 默认：开启 DNS rebinding 防护，但允许本机访问
    # 如需通过网关 / 域名访问，可在这里追加 allowed_hosts / allowed_origins
    transport_security = TransportSecuritySettings(
        enable_dns_rebinding_protection=True,
        allowed_hosts=["localhost:*", "127.0.0.1:*", "192.168.1.13:*","10.150.172.13:*"],
        allowed_origins=["http://localhost:*", "http://127.0.0.1:*","http://192.168.1.13:*","http://10.150.172.13:*"],
    )


mcp = FastMCP(
    "docx-editor",
    transport_security=transport_security,
)

# 全局变量：存储服务器配置
_server_config = {
    "host": None,
    "port": None,
    "transport": None,
}


def _normalize_report_type(report_type: Optional[str]) -> Optional[str]:
    if not report_type:
        return None
    t = str(report_type).strip().lower()
    mapping = {
        "日报": "daily",
        "日報": "daily",
        "daily": "daily",
        "d": "daily",
        "周报": "weekly",
        "週報": "weekly",
        "weekly": "weekly",
        "w": "weekly",
        "月报": "monthly",
        "月報": "monthly",
        "monthly": "monthly",
        "m": "monthly",
    }
    return mapping.get(report_type, mapping.get(t))


def _build_issue_text(norm_type: Optional[str], now: datetime) -> str:
    """根据报告类型和生成时间计算“期数 + 日期”字符串。"""
    d = now.date()
    date_str = f"{d.year}年{d.month}月{d.day}日"

    if norm_type == "daily":
        # 日报：只有日期，没有期数
        return date_str

    if norm_type == "weekly":
        # 周报：根据“当周周一所在月份”的周序号来计算期数
        monday = d - timedelta(days=d.weekday())
        year = monday.year
        month = monday.month

        first_day = date(year, month, 1)
        offset = (0 - first_day.weekday()) % 7  # 距离第一个周一的天数
        first_monday = first_day + timedelta(days=offset)
        issue_no = ((monday - first_monday).days // 7) + 1
        if issue_no < 1:
            issue_no = 1
        return f"{date_str}（第{issue_no}期）"

    # 默认：月报逻辑，期数固定为第一期
    return f"{date_str}（第1期）"


def _apply_report_date_logic_to_docx(
    docx_path: str,
    report_type: Optional[str],
    report_title_time: Optional[str],
) -> None:
    """
    只在“目录”之前的内容中，按照规则替换日期相关文本：
      - 匹配第一个形如 YYYY年M月 的片段 → 替换为 report_title_time
      - 匹配第一个形如 YYYY年M月D日（第X期） 的片段 →
        按报告类型 + 当前生成时间计算期数和日期，并进行替换。
    """
    norm_type = _normalize_report_type(report_type)
    if not norm_type and not report_title_time:
        return

    # 没有任何需要替换的目标，直接返回
    if not os.path.exists(docx_path):
        return

    with tempfile.TemporaryDirectory() as tmpdir:
        unpack(docx_path, tmpdir)
        doc_xml_path = os.path.join(tmpdir, "word", "document.xml")
        if not os.path.exists(doc_xml_path):
            return

        tree = etree.parse(doc_xml_path)
        root = tree.getroot()

        title_replaced = False
        issue_replaced = False
        now = datetime.now()

        # 正则模式
        import re

        pattern_title = re.compile(r"(\d{4})年(\d{1,2})月")
        pattern_issue = re.compile(r"(\d{4})年(\d{1,2})月(\d{1,2})日（第(\d+)期）")

        for p in root.iter(f"{{{W}}}p"):
            # 聚合段落文本
            t_nodes = list(p.iter(f"{{{W}}}t"))
            full = "".join(t.text or "" for t in t_nodes)

            # 遇到“目录”后就停止处理后面的内容
            if "目录" in full:
                break

            para_repls = []

            if report_title_time and not title_replaced:
                m = pattern_title.search(full)
                if m:
                    old = m.group(0)
                    new = report_title_time
                    para_repls.append((old, new))
                    title_replaced = True

            if norm_type and not issue_replaced:
                m2 = pattern_issue.search(full)
                if m2:
                    old2 = m2.group(0)
                    new2 = _build_issue_text(norm_type, now)
                    para_repls.append((old2, new2))
                    issue_replaced = True

            if para_repls:
                paragraph_replace(p, para_repls)

        tree.write(doc_xml_path, xml_declaration=True, encoding="UTF-8", standalone=True)
        # 重新打包覆盖原始 DOCX
        pack(tmpdir, docx_path, docx_path)


def _is_url(path: str) -> bool:
    """简单判断一个字符串是否为 HTTP/HTTPS URL。"""
    return path.startswith("http://") or path.startswith("https://")


def _download_to_temp(url: str, suffix: str = ".tmp") -> str:
    """
    将远程 URL 下载到临时文件，返回本地临时路径。

    调用方负责在使用完毕后删除该文件。
    """
    resp = requests.get(url, stream=True, timeout=30)
    resp.raise_for_status()

    fd, tmp_path = tempfile.mkstemp(suffix=suffix)
    try:
        with os.fdopen(fd, "wb") as f:
            for chunk in resp.iter_content(chunk_size=8192):
                if chunk:
                    f.write(chunk)
    except Exception:
        # 出错时清理临时文件
        try:
            os.remove(tmp_path)
        except OSError:
            pass
        raise

    return tmp_path


def _safe_filename(filename: Optional[str], default: str = "uploaded.docx") -> str:
    """提取安全文件名，避免路径穿越。"""
    if not filename:
        return default
    decoded = urllib.parse.unquote(str(filename))
    safe_name = os.path.basename(decoded).strip()
    return safe_name or default


def _filename_from_url(url: str, default: str = "uploaded.docx") -> str:
    """从 URL 中推断文件名，优先读取 query 参数中的 filename。"""
    parsed = urllib.parse.urlparse(url)
    query = urllib.parse.parse_qs(parsed.query)

    for key in ("filename", "fileName", "name"):
        values = query.get(key)
        if values:
            return _safe_filename(values[0], default=default)

    return _safe_filename(os.path.basename(parsed.path), default=default)


def _download_to_path(url: str, local_path: str) -> None:
    """将远程 URL 下载到指定路径，完成后原子覆盖目标文件。"""
    resp = requests.get(url, stream=True, timeout=30)
    resp.raise_for_status()

    parent_dir = os.path.dirname(local_path) or "."
    os.makedirs(parent_dir, exist_ok=True)
    fd, tmp_path = tempfile.mkstemp(
        suffix=os.path.splitext(local_path)[1] or ".tmp",
        dir=parent_dir,
    )
    try:
        with os.fdopen(fd, "wb") as f:
            for chunk in resp.iter_content(chunk_size=8192):
                if chunk:
                    f.write(chunk)
        os.replace(tmp_path, local_path)
    except Exception:
        try:
            os.remove(tmp_path)
        except OSError:
            pass
        raise


def _build_output_url(abs_output_path: str) -> Optional[str]:
    """
    构造输出文件的下载 URL。

    优先使用环境变量 MCP_OUTPUT_BASE_URL，否则根据服务器配置自动构建。

    约定：
      - 如果设置了 MCP_OUTPUT_BASE_URL: 使用该 URL 作为基础
      - 否则在 http 模式下: http://host:port/download/{filename}
      - stdio 模式下: 返回 None
    """
    filename = os.path.basename(abs_output_path)
    encoded_filename = urllib.parse.quote(filename)

    def _append_filename(base_url: str) -> str:
        parsed = urllib.parse.urlparse(base_url)
        query = urllib.parse.parse_qsl(parsed.query, keep_blank_values=True)

        for index, (key, _) in enumerate(query):
            if key in ("filename", "fileName", "name"):
                query[index] = (key, filename)
                return urllib.parse.urlunparse(
                    parsed._replace(query=urllib.parse.urlencode(query))
                )

        if parsed.path.rstrip("/").endswith("/download"):
            query.append(("filename", filename))
            return urllib.parse.urlunparse(
                parsed._replace(query=urllib.parse.urlencode(query))
            )

        return base_url.rstrip("/") + "/" + encoded_filename

    # 优先使用环境变量
    base = os.getenv("MCP_OUTPUT_BASE_URL")
    if base:
        return _append_filename(base)

    # 如果是 http 模式，自动构建下载 URL
    if _server_config["transport"] == "http":
        host = _server_config["host"]
        port = _server_config["port"]
        # 如果 host 是 0.0.0.0，尝试使用更具体的地址
        if host == "0.0.0.0":
            # 优先使用环境变量指定的公网地址
            public_host = os.getenv("MCP_PUBLIC_HOST")
            if public_host:
                host = public_host
            else:
                # 默认使用 localhost
                host = "localhost"

        return _append_filename(f"http://{host}:{port}/download")

    return None


def _get_upload_dir() -> str:
    """
    获取文件上传目录。

    优先使用环境变量 MCP_UPLOAD_DIR，否则使用当前目录下的 uploads 文件夹。
    """
    upload_dir = os.getenv("MCP_UPLOAD_DIR", "./uploads")
    os.makedirs(upload_dir, exist_ok=True)
    return os.path.abspath(upload_dir)


def _get_tmp_upload_dir() -> str:
    """
    获取临时上传目录。

    优先使用环境变量 MCP_TMP_UPLOAD_DIR，否则使用当前目录下的 tmp 文件夹。
    """
    tmp_dir = os.getenv("MCP_TMP_UPLOAD_DIR", "./tmp")
    os.makedirs(tmp_dir, exist_ok=True)
    return os.path.abspath(tmp_dir)


def _get_lock_dir() -> str:
    """获取文件锁目录。"""
    lock_dir = os.path.join(_get_upload_dir(), ".locks")
    os.makedirs(lock_dir, exist_ok=True)
    return lock_dir


def _get_lock_path(target_path: str) -> str:
    """根据目标文件路径生成稳定的锁文件路径。"""
    abs_target = os.path.abspath(target_path)
    base_name = _safe_filename(os.path.basename(abs_target), default="file")
    digest = hashlib.sha256(abs_target.encode("utf-8")).hexdigest()
    return os.path.join(_get_lock_dir(), f"{base_name}.{digest}.lock")


def _acquire_lock(handle) -> None:
    """跨进程独占锁。"""
    handle.seek(0, os.SEEK_END)
    if handle.tell() == 0:
        handle.write(b"0")
        handle.flush()
    handle.seek(0)

    if os.name == "nt":
        while True:
            try:
                msvcrt.locking(handle.fileno(), msvcrt.LK_LOCK, 1)
                break
            except OSError:
                time.sleep(0.05)
    else:
        fcntl.flock(handle.fileno(), fcntl.LOCK_EX)


def _release_lock(handle) -> None:
    """释放跨进程独占锁。"""
    handle.seek(0)
    if os.name == "nt":
        msvcrt.locking(handle.fileno(), msvcrt.LK_UNLCK, 1)
    else:
        fcntl.flock(handle.fileno(), fcntl.LOCK_UN)


@contextmanager
def _file_lock(target_path: str):
    """针对目标文件路径获取独占文件锁。"""
    lock_path = _get_lock_path(target_path)
    with open(lock_path, "a+b") as handle:
        _acquire_lock(handle)
        try:
            yield
        finally:
            _release_lock(handle)


def _write_bytes_atomic(file_path: str, content: bytes) -> None:
    """原子写入文件内容。"""
    parent_dir = os.path.dirname(file_path) or "."
    os.makedirs(parent_dir, exist_ok=True)

    fd, tmp_path = tempfile.mkstemp(
        suffix=os.path.splitext(file_path)[1] or ".tmp",
        dir=parent_dir,
    )
    try:
        with os.fdopen(fd, "wb") as f:
            f.write(content)
        os.replace(tmp_path, file_path)
    except Exception:
        try:
            os.remove(tmp_path)
        except OSError:
            pass
        raise


def _snapshot_file(file_path: str) -> str:
    """复制文件快照，供下载接口在释放锁后返回。"""
    suffix = os.path.splitext(file_path)[1] or ".tmp"
    fd, snapshot_path = tempfile.mkstemp(suffix=suffix)
    try:
        with os.fdopen(fd, "wb") as dst, open(file_path, "rb") as src:
            shutil.copyfileobj(src, dst)
    except Exception:
        try:
            os.remove(snapshot_path)
        except OSError:
            pass
        raise
    return snapshot_path


def _cleanup_temp_file(file_path: str) -> None:
    try:
        os.remove(file_path)
    except OSError:
        pass


def _validate_docx_file(file_path: str) -> None:
    if not os.path.exists(file_path):
        raise FileNotFoundError(f"输入 DOCX 文件不存在: {file_path}")
    if not os.path.isfile(file_path):
        raise FileNotFoundError(f"输入路径不是文件: {file_path}")

    size = os.path.getsize(file_path)
    if size <= 0:
        raise ValueError(f"输入 DOCX 文件为空: {os.path.basename(file_path)}")
    if not zipfile.is_zipfile(file_path):
        raise ValueError(f"输入文件不是合法的 DOCX/ZIP: {os.path.basename(file_path)}")


def _resolve_edit_target_path(input_docx_path: str, upload_dir: str) -> str:
    """
    将编辑输入统一解析为本地路径。

    - URL 输入会先下载到 uploads 目录
    - 相对路径按 uploads 下的文件名处理
    - 绝对路径直接使用
    """
    if _is_url(input_docx_path):
        filename = _filename_from_url(input_docx_path)
        return os.path.join(upload_dir, filename)

    if os.path.isabs(input_docx_path):
        return input_docx_path

    return os.path.join(upload_dir, _safe_filename(input_docx_path))


@mcp.tool()
async def list_docx_images(docx_url: str) -> List[Dict[str, Any]]:
    """
    列出指定 DOCX 文件中的所有图片信息。

    参数:
      - docx_url: 文件的HTTP/HTTPS URL。

    返回:
      - 图片信息列表，每一项包含:
        - index: 图片在文档中的顺序（从 1 开始）
        - media_file: DOCX 内部的资源路径
        - ext: 图片扩展名
        - docpr_name: Word 内部的图片名称
        - width_cm / height_cm: 近似尺寸（厘米），可能为 None
    """
    imgs = get_images_info(_download_to_temp(docx_url, suffix=".docx"))
    return imgs


def _edit_docx_core(
    input_docx_path: str,
    replacements: Optional[List[Dict[str, Any]]],
    report_type: Optional[str],
    report_title_time: Optional[str],
) -> Dict[str, Any]:
    """
    对 DOCX 文件进行编辑（与 HTTP /edit_docx 共用逻辑）。

    返回:
      - {"output_path": 绝对路径, "output_url": URL 或 None}
    """
    print(f"edit_docx: input_docx_path: {input_docx_path}, replacements: {replacements}")
    upload_dir = _get_upload_dir()
    local_input = _resolve_edit_target_path(input_docx_path, upload_dir)
    lock_cm = _file_lock(local_input)
    lock_cm.__enter__()
    try:

        if _is_url(input_docx_path):
            _download_to_path(input_docx_path, local_input)

        _validate_docx_file(local_input)

        if replacements is None:
            replacements = []

        rep_pairs = []
        color_keywords = []
        for item in replacements:
            old = item.get("old")
            new_raw = item.get("new")
            if not old:
                continue
            old = _normalize_newlines(old)
            if new_raw is None:
                new_raw = ""
            else:
                new_raw = _normalize_newlines(new_raw)
            new_plain, spans = _parse_span_replacement(new_raw)
            rep_pairs.append((old, new_plain))
            color_keywords.extend(spans)

        parent_dir = os.path.dirname(local_input) or "."
        fd, output_docx = tempfile.mkstemp(suffix=".docx", dir=parent_dir)
        os.close(fd)
        process(
            input_docx=local_input,
            output_docx=output_docx,
            replacements=rep_pairs,
            color_keywords=color_keywords,
        )

        if report_type or report_title_time:
            try:
                _apply_report_date_logic_to_docx(
                    output_docx,
                    report_type=report_type,
                    report_title_time=report_title_time,
                )
            except Exception as e:
                print(f"apply report date logic failed: {e}")

        os.replace(output_docx, local_input)
        abs_out = os.path.abspath(local_input)

        return {
            "output_path": abs_out,
            "output_url": _build_output_url(abs_out),
        }
    except Exception:
        if 'output_docx' in locals() and os.path.exists(output_docx):
            try:
                os.remove(output_docx)
            except OSError:
                pass
        raise
    finally:
        lock_cm.__exit__(None, None, None)


@mcp.tool()
def edit_docx(
    input_docx_path: str,
    replacements: List[Dict[str, Any]],
    report_type: str,
    report_title_time: str,
) -> Dict[str, Any]:
    """
    对 DOCX 进行文本替换 / 关键字上色。

    支持：
      - 纯文本替换
      - 通过 <span color="red">关键字</span> 语法设置关键字颜色
      - 报告日期与期数自动替换（仅在“目录”之前生效）

    参数:
      - input_docx_path: 输入文件名
      - replacements: 替换规则列表，例如
            [{"old": "原文", "new": "<span color='red'>新文</span>"}]
      - report_type: 日报/周报/月报 或 daily/weekly/monthly
      - report_title_time: 替换标题中「YYYY年M月」为指定字符串（首次匹配）

    返回:
      - 成功: {"success": true, "output_path": ..., "output_url": ...}
      - 失败: {"success": false, "message": "..."}
    """
    try:
        out = _edit_docx_core(
            input_docx_path,
            replacements,
            report_type,
            report_title_time,
        )
        return {"success": True, **out}
    except Exception as e:
        return {"success": False, "message": str(e)}


@mcp.custom_route("/edit_docx", methods=["POST"])
async def edit_docx_handler(request: Request):
    try:
        data = await request.json()
    except json.JSONDecodeError:
        return JSONResponse(
            {
                "success": False,
                "message": (
                    "请求体必须是合法的 JSON 对象。"
                    "请使用 Content-Type: application/json，并发送非空的 JSON body"
                    "（空 body、form-data 或 urlencoded 会导致此错误）。"
                ),
            },
            status_code=400,
        )
    input_docx_path = data.get("input_docx_path")
    replacements = data.get("replacements")
    report_type = data.get("report_type")
    report_title_time = data.get("report_title_time")
    try:
        result = _edit_docx_core(
            input_docx_path,
            replacements,
            report_type,
            report_title_time,
        )
        return JSONResponse(result)
    except Exception as e:
        return JSONResponse({"success": False, "message": str(e)}, status_code=500)

def _get_log_path() -> str:
    """
    获取日志文件路径。

    优先使用环境变量 MCP_LOG_FILE（完整路径），否则使用当前目录下的 logs/mcp.log。
    """
    log_file = os.getenv("MCP_LOG_FILE", "./logs/mcp.log")
    log_path = os.path.abspath(log_file)
    os.makedirs(os.path.dirname(log_path), exist_ok=True)
    return log_path

@mcp.custom_route("/log", methods=["POST"])
async def append_log(request: Request):
    """
    将一段字符串追加写入日志文件，每行带时间戳。

    参数:
      - message: 要写入的字符串内容。

    返回:
      - JSON 格式：
        {"success": True/False, "log_path": 日志文件路径, "message": 说明}
    """
    try:
        # data = await request.json()
        data = await request.body()
        if not data:
            return JSONResponse(
                {
                    "success": False,
                    "message": "未提供消息内容",
                },
                status_code=400,
            )
        log_path = _get_log_path()
        ts = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        line = f"[{ts}] {data.decode('utf-8')}\n"
        with open(log_path, "a", encoding="utf-8") as f:
            f.write(line)
        return JSONResponse(
            {
                "success": True,
                "log_path": log_path,
                "message": "已写入日志",
            }
        )
    except Exception as e:
        return JSONResponse(
            {
                "success": False,
                "log_path": _get_log_path(),
                "message": f"写入日志失败: {str(e)}",
            },
            status_code=500,
        )
@mcp.custom_route("/upload", methods=["POST"])
async def upload_handler(request: Request):
    """处理文件上传"""
    try:
        form = await request.form()
        file = form.get("file")

        if not file:
                return JSONResponse({
                "success": False,
                "message": "未提供文件"
            }, status_code=400)

        upload_dir = _get_upload_dir()
        orig_filename = file.filename or "uploaded.docx"

        # 安全检查：防止路径遍历攻击，保留原始文件名
        filename = _safe_filename(orig_filename)
        file_path = os.path.join(upload_dir, filename)

        # 保存文件到 uploads 目录（如已存在则覆盖）
        content = await file.read()
        if not content:
            return JSONResponse({
                "success": False,
                "message": f"上传文件为空: {filename}"
            }, status_code=400)
        with _file_lock(file_path):
            _write_bytes_atomic(file_path, content)

        return JSONResponse({
            "success": True,
            "filename": filename,        # 保留原始文件名，供 edit_docx 使用
            "file_path": file_path,      # 绝对路径（可选）
            "file_url": _build_output_url(file_path),
            "size": len(content),
            "message": f"文件上传成功: {filename}"
        })
    except Exception as e:
        return JSONResponse({
            "success": False,
            "message": f"文件上传失败: {str(e)}"
        }, status_code=500)
@mcp.custom_route("/download", methods=["GET"])
@mcp.custom_route("/download/{filename}", methods=["GET"])
async def download_handler(request: Request):
    """处理文件下载"""
    try:
        filename = (
            request.path_params.get("filename")
            or request.query_params.get("filename")
            or request.query_params.get("fileName")
            or request.query_params.get("name")
        )
        upload_dir = _get_upload_dir()
        download_filename = (
            request.query_params.get("download_filename")
            or request.query_params.get("new_filename")
            or request.query_params.get("rename_filename")
        )

        if not filename:
            return JSONResponse({
                "success": False,
                "message": "缺少 filename 参数"
            }, status_code=400)

        # 安全检查：防止路径遍历攻击
        filename = _safe_filename(filename)
        file_path = os.path.join(upload_dir, filename)
        lock_cm = _file_lock(file_path)
        lock_cm.__enter__()
        try:
            if not os.path.exists(file_path):
                return JSONResponse({
                "success": False,
                "message": f"文件不存在: {filename}"
            }, status_code=404)

            if not os.path.isfile(file_path):
                return JSONResponse({
                "success": False,
                "message": f"不是文件: {filename}"
            }, status_code=400)

            snapshot_path = _snapshot_file(file_path)
        finally:
            lock_cm.__exit__(None, None, None)

        return FileResponse(
            snapshot_path,
            filename=_safe_filename(download_filename, default=filename),
            media_type="application/octet-stream",
            background=BackgroundTask(_cleanup_temp_file, snapshot_path),
        )
    except Exception as e:
        return JSONResponse({
            "success": False,
            "message": f"文件下载失败: {str(e)}"
        }, status_code=500)

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="DOCX MCP 服务器")
    parser.add_argument(
        "--transport",
        choices=["stdio", "http"],
        default="stdio",
        help="传输方式：stdio（本地）或 http（远程 HTTP /streamable-http）",
    )
    parser.add_argument(
        "--host",
        default="0.0.0.0",
        help="HTTP 模式监听地址（默认 0.0.0.0）",
    )
    parser.add_argument(
        "--port",
        type=int,
        default=8080,
        help="HTTP 模式监听端口（默认 8080）",
    )
    args = parser.parse_args()

    if args.transport == "http":
        # 保存服务器配置到全局变量
        _server_config["host"] = args.host
        _server_config["port"] = args.port
        _server_config["transport"] = "http"

        # 启动 MCP 服务器（会自动集成到 uvicorn）
        mcp.settings.host = args.host
        mcp.settings.port = args.port

        # 将自定义路由注入到 MCP 服务器
        print(f"🚀 MCP HTTP 服务器启动中 → http://{args.host}:{args.port}/mcp")

        # 注意：FastMCP 使用 Starlette，我们需要扩展其路由
        mcp.run(transport="streamable-http")
    else:
        # 本地 stdio 模式
        _server_config["transport"] = "stdio"
        print("🚀 MCP stdio 模式启动中（本地使用）")
        mcp.run(transport="stdio")