from .util import *
from .config import config
import os
import re
import json
import importlib
#import importlib.util
import traceback
from nonebot import logger

class MarshoContext:
    """
    Marsho 的上下文类
    """

    def __init__(self):
        self.contents = {
            "private": {},
            "non-private": {}
        }

    def _get_target_dict(self, is_private):
        return self.contents["private"] if is_private else self.contents["non-private"]

    def append(self, content, target_id: str, is_private: bool):
        """
        往上下文中添加消息
        """
        target_dict = self._get_target_dict(is_private)
        if target_id not in target_dict:
            target_dict[target_id] = []
        target_dict[target_id].append(content)

    def set_context(self, contexts, target_id: str, is_private: bool):
        """
        设置上下文
        """
        target_dict = self._get_target_dict(is_private)
        target_dict[target_id] = contexts

    def reset(self, target_id: str, is_private: bool):
        """
        重置上下文
        """
        target_dict = self._get_target_dict(is_private)
        if target_id in target_dict:
            target_dict[target_id].clear()

    def build(self, target_id: str, is_private: bool) -> list:
        """
        构建返回的上下文，不包括系统消息
        """
        target_dict = self._get_target_dict(is_private)
        if target_id not in target_dict:
            target_dict[target_id] = []
        return target_dict[target_id]


class MarshoTools:
    """
    Marsho 的工具类
    """
    def __init__(self):
        self.tools_list = []
        self.imported_packages = {}

    def load_tools(self, tools_dir):
        """
        从指定路径加载工具包
        """
        if not os.path.exists(tools_dir):
            logger.error(f"工具集目录 {tools_dir} 不存在。")
            return

        for package_name in os.listdir(tools_dir):
            package_path = os.path.join(tools_dir, package_name)
            if os.path.isdir(package_path) and os.path.exists(os.path.join(package_path, '__init__.py')):
                json_path = os.path.join(package_path, 'tools.json')
                if os.path.exists(json_path):
                    try:
                        with open(json_path, 'r', encoding="utf-8") as json_file:
                            data = json.load(json_file)
                            for i in data:
                                self.tools_list.append(i)
                            # 导入包
                            spec = importlib.util.spec_from_file_location(package_name, os.path.join(package_path, "__init__.py"))
                            package = importlib.util.module_from_spec(spec)
                            spec.loader.exec_module(package)
                            self.imported_packages[package_name] = package
                            logger.info(f"成功加载工具包 {package_name}")
                    except json.JSONDecodeError as e:
                        logger.error(f"解码 JSON {json_path} 时发生错误: {e}")
                    except Exception as e:
                        logger.error(f"加载工具包时发生错误: {e}")
                        traceback.print_exc()
                else:
                    logger.warning(f"在工具包 {package_path} 下找不到tools.json，跳过加载。")
            else:
                logger.warning(f"{package_path} 不是有效的工具包路径，跳过加载。")

    async def call(self, full_function_name: str, args: dict):
        """
        调用指定的函数
        """
        # 分割包名和函数名
        parts = full_function_name.split("__")
        if len(parts) == 2:
            package_name = parts[0]
            function_name = parts[1]
        else:
            logger.error("函数名无效")
        if package_name in self.imported_packages:
            package = self.imported_packages[package_name]
            try:
                function = getattr(package, function_name)
                return await function(**args)
            except AttributeError:
                logger.error(f"函数 '{function_name}' 在 '{package_name}' 中找不到。")
            except TypeError as e:
                logger.error(f"调用函数 '{function_name}' 时发生错误: {e}")
        else:
            logger.error(f"工具包 '{package_name}' 未导入")
    
    def get_tools_list(self):
        if not self.tools_list or not config.marshoai_enable_tools:
            return None
        return self.tools_list