"""
日志工具模块 - 记录多智能体对话历史和系统事件
"""
import os
import json
import logging
from datetime import datetime
from typing import Dict, List, Any, Optional
from pathlib import Path


class ConversationLogger:
    """对话历史日志记录器"""
    
    def __init__(self, log_dir: str = "logs"):
        """
        初始化日志记录器
        
        Args:
            log_dir: 日志目录
        """
        self.log_dir = Path(log_dir)
        self.log_dir.mkdir(parents=True, exist_ok=True)
        
        # 创建会话 ID
        self.session_id = datetime.now().strftime("%Y%m%d_%H%M%S")
        self.log_file = self.log_dir / f"session_{self.session_id}.jsonl"
        
        # 配置日志
        self.logger = logging.getLogger(f"autogen_sdls_{self.session_id}")
        self.logger.setLevel(logging.INFO)
        
        # 文件处理器
        file_handler = logging.FileHandler(self.log_file, encoding='utf-8')
        file_handler.setLevel(logging.INFO)
        
        # 控制台处理器
        console_handler = logging.StreamHandler()
        console_handler.setLevel(logging.INFO)
        
        # 格式化器
        formatter = logging.Formatter(
            '%(asctime)s - %(name)s - %(levelname)s - %(message)s',
            datefmt='%Y-%m-%d %H:%M:%S'
        )
        file_handler.setFormatter(formatter)
        console_handler.setFormatter(formatter)
        
        self.logger.addHandler(file_handler)
        self.logger.addHandler(console_handler)
        
        # 对话历史
        self.conversation_history: List[Dict[str, Any]] = []
    
    def log_message(
        self,
        agent_name: str,
        message: str,
        role: str = "assistant",
        metadata: Optional[Dict] = None
    ):
        """
        记录单条消息
        
        Args:
            agent_name: Agent 名称
            message: 消息内容
            role: 角色（user/assistant/system）
            metadata: 额外元数据
        """
        entry = {
            "timestamp": datetime.now().isoformat(),
            "session_id": self.session_id,
            "agent_name": agent_name,
            "role": role,
            "message": message,
            "metadata": metadata or {}
        }
        
        self.conversation_history.append(entry)
        
        # 写入 JSONL 文件
        with open(self.log_file, 'a', encoding='utf-8') as f:
            f.write(json.dumps(entry, ensure_ascii=False) + '\n')
        
        self.logger.info(f"[{agent_name}] {message[:100]}...")
    
    def log_event(self, event_type: str, description: str, data: Optional[Dict] = None):
        """
        记录系统事件
        
        Args:
            event_type: 事件类型
            description: 事件描述
            data: 相关数据
        """
        entry = {
            "timestamp": datetime.now().isoformat(),
            "session_id": self.session_id,
            "event_type": event_type,
            "description": description,
            "data": data or {}
        }
        
        with open(self.log_file, 'a', encoding='utf-8') as f:
            f.write(json.dumps(entry, ensure_ascii=False) + '\n')
        
        self.logger.info(f"[EVENT] {event_type}: {description}")
    
    def get_conversation_history(self) -> List[Dict[str, Any]]:
        """获取完整的对话历史"""
        return self.conversation_history
    
    def export_to_json(self, output_path: Optional[str] = None) -> str:
        """
        导出对话历史为 JSON 格式
        
        Args:
            output_path: 输出路径，默认在 logs 目录下
        
        Returns:
            导出文件的路径
        """
        if output_path is None:
            output_path = self.log_dir / f"conversation_{self.session_id}.json"
        else:
            output_path = Path(output_path)
        
        export_data = {
            "session_id": self.session_id,
            "created_at": datetime.now().isoformat(),
            "total_messages": len(self.conversation_history),
            "conversation": self.conversation_history
        }
        
        with open(output_path, 'w', encoding='utf-8') as f:
            json.dump(export_data, f, ensure_ascii=False, indent=2)
        
        self.logger.info(f"对话历史已导出到：{output_path}")
        return str(output_path)
    
    def export_to_markdown(self, output_path: Optional[str] = None) -> str:
        """
        导出对话历史为 Markdown 格式
        
        Args:
            output_path: 输出路径
        
        Returns:
            导出文件的路径
        """
        if output_path is None:
            output_path = self.log_dir / f"conversation_{self.session_id}.md"
        else:
            output_path = Path(output_path)
        
        with open(output_path, 'w', encoding='utf-8') as f:
            f.write(f"# AutoGen SDLC 对话历史\n\n")
            f.write(f"**会话 ID**: {self.session_id}\n")
            f.write(f"**创建时间**: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n")
            f.write(f"**总消息数**: {len(self.conversation_history)}\n\n")
            f.write("---\n\n")
            
            for entry in self.conversation_history:
                timestamp = entry["timestamp"][:19].replace('T', ' ')
                agent = entry["agent_name"]
                message = entry["message"]
                
                f.write(f"### [{timestamp}] {agent}\n\n")
                f.write(f"{message}\n\n")
                f.write("---\n\n")
        
        self.logger.info(f"对话历史已导出为 Markdown: {output_path}")
        return str(output_path)


# 全局日志实例
_global_logger: Optional[ConversationLogger] = None


def get_logger(log_dir: str = "logs") -> ConversationLogger:
    """获取或创建全局日志记录器"""
    global _global_logger
    if _global_logger is None:
        _global_logger = ConversationLogger(log_dir)
    return _global_logger


def reset_logger():
    """重置全局日志记录器"""
    global _global_logger
    _global_logger = None