backend/app/services/simulation_runner.py

"""
OASIS模拟运行器
在后台运行模拟并记录每个Agent的动作，支持实时状态监控
"""

import os
import sys
import json
import time
import asyncio
import threading
import subprocess
import signal
import atexit
from typing import Dict, Any, List, Optional, Union
from dataclasses import dataclass, field
from datetime import datetime
from enum import Enum
from queue import Queue

from ..config import Config
from ..utils.logger import get_logger
from .zep_graph_memory_updater import ZepGraphMemoryManager
from .simulation_ipc import SimulationIPCClient, CommandType, IPCResponse

logger = get_logger('mirofish.simulation_runner')

# 标记是否已注册清理函数
_cleanup_registered = False

# 平台检测
IS_WINDOWS = sys.platform == 'win32'


class RunnerStatus(str, Enum):
    """运行器状态"""
    IDLE = "idle"
    STARTING = "starting"
    RUNNING = "running"
    PAUSED = "paused"
    STOPPING = "stopping"
    STOPPED = "stopped"
    COMPLETED = "completed"
    FAILED = "failed"


@dataclass
class AgentAction:
    """Agent动作记录"""
    round_num: int
    timestamp: str
    platform: str  # twitter / reddit
    agent_id: int
    agent_name: str
    action_type: str  # CREATE_POST, LIKE_POST, etc.
    action_args: Dict[str, Any] = field(default_factory=dict)
    result: Optional[str] = None
    success: bool = True
    
    def to_dict(self) -> Dict[str, Any]:
        return {
            "round_num": self.round_num,
            "timestamp": self.timestamp,
            "platform": self.platform,
            "agent_id": self.agent_id,
            "agent_name": self.agent_name,
            "action_type": self.action_type,
            "action_args": self.action_args,
            "result": self.result,
            "success": self.success,
        }


@dataclass
class RoundSummary:
    """每轮摘要"""
    round_num: int
    start_time: str
    end_time: Optional[str] = None
    simulated_hour: int = 0
    twitter_actions: int = 0
    reddit_actions: int = 0
    active_agents: List[int] = field(default_factory=list)
    actions: List[AgentAction] = field(default_factory=list)
    
    def to_dict(self) -> Dict[str, Any]:
        return {
            "round_num": self.round_num,
            "start_time": self.start_time,
            "end_time": self.end_time,
            "simulated_hour": self.simulated_hour,
            "twitter_actions": self.twitter_actions,
            "reddit_actions": self.reddit_actions,
            "active_agents": self.active_agents,
            "actions_count": len(self.actions),
            "actions": [a.to_dict() for a in self.actions],
        }


@dataclass
class SimulationRunState:
    """模拟运行状态（实时）"""
    simulation_id: str
    runner_status: RunnerStatus = RunnerStatus.IDLE
    
    # 进度信息
    current_round: int = 0
    total_rounds: int = 0
    simulated_hours: int = 0
    total_simulation_hours: int = 0
    
    # 各平台独立轮次和模拟时间（用于双平台并行显示）
    twitter_current_round: int = 0
    reddit_current_round: int = 0
    twitter_simulated_hours: int = 0
    reddit_simulated_hours: int = 0
    
    # 平台状态
    twitter_running: bool = False
    reddit_running: bool = False
    twitter_actions_count: int = 0
    reddit_actions_count: int = 0
    
    # 平台完成状态（通过检测 actions.jsonl 中的 simulation_end 事件）
    twitter_completed: bool = False
    reddit_completed: bool = False
    
    # 每轮摘要
    rounds: List[RoundSummary] = field(default_factory=list)
    
    # 最近动作（用于前端实时展示）
    recent_actions: List[AgentAction] = field(default_factory=list)
    max_recent_actions: int = 50
    
    # 时间戳
    started_at: Optional[str] = None
    updated_at: str = field(default_factory=lambda: datetime.now().isoformat())
    completed_at: Optional[str] = None
    
    # 错误信息
    error: Optional[str] = None
    
    # 进程ID（用于停止）
    process_pid: Optional[int] = None
    
    def add_action(self, action: AgentAction):
        """添加动作到最近动作列表"""
        self.recent_actions.insert(0, action)
        if len(self.recent_actions) > self.max_recent_actions:
            self.recent_actions = self.recent_actions[:self.max_recent_actions]
        
        if action.platform == "twitter":
            self.twitter_actions_count += 1
        else:
            self.reddit_actions_count += 1
        
        self.updated_at = datetime.now().isoformat()
    
    def to_dict(self) -> Dict[str, Any]:
        return {
            "simulation_id": self.simulation_id,
            "runner_status": self.runner_status.value,
            "current_round": self.current_round,
            "total_rounds": self.total_rounds,
            "simulated_hours": self.simulated_hours,
            "total_simulation_hours": self.total_simulation_hours,
            "progress_percent": round(self.current_round / max(self.total_rounds, 1) * 100, 1),
            # 各平台独立轮次和时间
            "twitter_current_round": self.twitter_current_round,
            "reddit_current_round": self.reddit_current_round,
            "twitter_simulated_hours": self.twitter_simulated_hours,
            "reddit_simulated_hours": self.reddit_simulated_hours,
            "twitter_running": self.twitter_running,
            "reddit_running": self.reddit_running,
            "twitter_completed": self.twitter_completed,
            "reddit_completed": self.reddit_completed,
            "twitter_actions_count": self.twitter_actions_count,
            "reddit_actions_count": self.reddit_actions_count,
            "total_actions_count": self.twitter_actions_count + self.reddit_actions_count,
            "started_at": self.started_at,
            "updated_at": self.updated_at,
            "completed_at": self.completed_at,
            "error": self.error,
            "process_pid": self.process_pid,
        }
    
    def to_detail_dict(self) -> Dict[str, Any]:
        """包含最近动作的详细信息"""
        result = self.to_dict()
        result["recent_actions"] = [a.to_dict() for a in self.recent_actions]
        result["rounds_count"] = len(self.rounds)
        return result


class SimulationRunner:
    """
    模拟运行器
    
    负责：
    1. 在后台进程中运行OASIS模拟
    2. 解析运行日志，记录每个Agent的动作
    3. 提供实时状态查询接口
    4. 支持暂停/停止/恢复操作
    """
    
    # 运行状态存储目录
    RUN_STATE_DIR = os.path.join(
        os.path.dirname(__file__),
        '../../uploads/simulations'
    )
    
    # 脚本目录
    SCRIPTS_DIR = os.path.join(
        os.path.dirname(__file__),
        '../../scripts'
    )
    
    # 内存中的运行状态
    _run_states: Dict[str, SimulationRunState] = {}
    _processes: Dict[str, subprocess.Popen] = {}
    _action_queues: Dict[str, Queue] = {}
    _monitor_threads: Dict[str, threading.Thread] = {}
    _stdout_files: Dict[str, Any] = {}  # 存储 stdout 文件句柄
    _stderr_files: Dict[str, Any] = {}  # 存储 stderr 文件句柄
    
    # 图谱记忆更新配置
    _graph_memory_enabled: Dict[str, bool] = {}  # simulation_id -> enabled
    
    @classmethod
    def get_run_state(cls, simulation_id: str) -> Optional[SimulationRunState]:
        """获取运行状态"""
        if simulation_id in cls._run_states:
            return cls._run_states[simulation_id]
        
        # 尝试从文件加载
        state = cls._load_run_state(simulation_id)
        if state:
            cls._run_states[simulation_id] = state
        return state
    
    @classmethod
    def _load_run_state(cls, simulation_id: str) -> Optional[SimulationRunState]:
        """从文件加载运行状态"""
        state_file = os.path.join(cls.RUN_STATE_DIR, simulation_id, "run_state.json")
        if not os.path.exists(state_file):
            return None
        
        try:
            with open(state_file, 'r', encoding='utf-8') as f:
                data = json.load(f)
            
            state = SimulationRunState(
                simulation_id=simulation_id,
                runner_status=RunnerStatus(data.get("runner_status", "idle")),
                current_round=data.get("current_round", 0),
                total_rounds=data.get("total_rounds", 0),
                simulated_hours=data.get("simulated_hours", 0),
                total_simulation_hours=data.get("total_simulation_hours", 0),
                # 各平台独立轮次和时间
                twitter_current_round=data.get("twitter_current_round", 0),
                reddit_current_round=data.get("reddit_current_round", 0),
                twitter_simulated_hours=data.get("twitter_simulated_hours", 0),
                reddit_simulated_hours=data.get("reddit_simulated_hours", 0),
                twitter_running=data.get("twitter_running", False),
                reddit_running=data.get("reddit_running", False),
                twitter_completed=data.get("twitter_completed", False),
                reddit_completed=data.get("reddit_completed", False),
                twitter_actions_count=data.get("twitter_actions_count", 0),
                reddit_actions_count=data.get("reddit_actions_count", 0),
                started_at=data.get("started_at"),
                updated_at=data.get("updated_at", datetime.now().isoformat()),
                completed_at=data.get("completed_at"),
                error=data.get("error"),
                process_pid=data.get("process_pid"),
            )
            
            # 加载最近动作
            actions_data = data.get("recent_actions", [])
            for a in actions_data:
                state.recent_actions.append(AgentAction(
                    round_num=a.get("round_num", 0),
                    timestamp=a.get("timestamp", ""),
                    platform=a.get("platform", ""),
                    agent_id=a.get("agent_id", 0),
                    agent_name=a.get("agent_name", ""),
                    action_type=a.get("action_type", ""),
                    action_args=a.get("action_args", {}),
                    result=a.get("result"),
                    success=a.get("success", True),
                ))
            
            return state
        except Exception as e:
            logger.error(f"加载运行状态失败: {str(e)}")
            return None
    
    @classmethod
    def _save_run_state(cls, state: SimulationRunState):
        """保存运行状态到文件"""
        sim_dir = os.path.join(cls.RUN_STATE_DIR, state.simulation_id)
        os.makedirs(sim_dir, exist_ok=True)
        state_file = os.path.join(sim_dir, "run_state.json")
        
        data = state.to_detail_dict()
        
        with open(state_file, 'w', encoding='utf-8') as f:
            json.dump(data, f, ensure_ascii=False, indent=2)
        
        cls._run_states[state.simulation_id] = state
    
    @classmethod
    def start_simulation(
        cls,
        simulation_id: str,
        platform: str = "parallel",  # twitter / reddit / parallel
        max_rounds: int = None,  # 最大模拟轮数（可选，用于截断过长的模拟）
        enable_graph_memory_update: bool = False,  # 是否将活动更新到Zep图谱
        graph_id: str = None  # Zep图谱ID（启用图谱更新时必需）
    ) -> SimulationRunState:
        """
        启动模拟
        
        Args:
            simulation_id: 模拟ID
            platform: 运行平台 (twitter/reddit/parallel)
            max_rounds: 最大模拟轮数（可选，用于截断过长的模拟）
            enable_graph_memory_update: 是否将Agent活动动态更新到Zep图谱
            graph_id: Zep图谱ID（启用图谱更新时必需）
            
        Returns:
            SimulationRunState
        """
        # 检查是否已在运行
        existing = cls.get_run_state(simulation_id)
        if existing and existing.runner_status in [RunnerStatus.RUNNING, RunnerStatus.STARTING]:
            raise ValueError(f"模拟已在运行中: {simulation_id}")
        
        # 加载模拟配置
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        config_path = os.path.join(sim_dir, "simulation_config.json")
        
        if not os.path.exists(config_path):
            raise ValueError(f"模拟配置不存在，请先调用 /prepare 接口")
        
        with open(config_path, 'r', encoding='utf-8') as f:
            config = json.load(f)
        
        # 初始化运行状态
        time_config = config.get("time_config", {})
        total_hours = time_config.get("total_simulation_hours", 72)
        minutes_per_round = time_config.get("minutes_per_round", 30)
        total_rounds = int(total_hours * 60 / minutes_per_round)
        
        # 如果指定了最大轮数，则截断
        if max_rounds is not None and max_rounds > 0:
            original_rounds = total_rounds
            total_rounds = min(total_rounds, max_rounds)
            if total_rounds < original_rounds:
                logger.info(f"轮数已截断: {original_rounds} -> {total_rounds} (max_rounds={max_rounds})")
        
        state = SimulationRunState(
            simulation_id=simulation_id,
            runner_status=RunnerStatus.STARTING,
            total_rounds=total_rounds,
            total_simulation_hours=total_hours,
            started_at=datetime.now().isoformat(),
        )
        
        cls._save_run_state(state)
        
        # 如果启用图谱记忆更新，创建更新器
        if enable_graph_memory_update:
            if not graph_id:
                raise ValueError("启用图谱记忆更新时必须提供 graph_id")
            
            try:
                ZepGraphMemoryManager.create_updater(simulation_id, graph_id)
                cls._graph_memory_enabled[simulation_id] = True
                logger.info(f"已启用图谱记忆更新: simulation_id={simulation_id}, graph_id={graph_id}")
            except Exception as e:
                logger.error(f"创建图谱记忆更新器失败: {e}")
                cls._graph_memory_enabled[simulation_id] = False
        else:
            cls._graph_memory_enabled[simulation_id] = False
        
        # 确定运行哪个脚本（脚本位于 backend/scripts/ 目录）
        if platform == "twitter":
            script_name = "run_twitter_simulation.py"
            state.twitter_running = True
        elif platform == "reddit":
            script_name = "run_reddit_simulation.py"
            state.reddit_running = True
        else:
            script_name = "run_parallel_simulation.py"
            state.twitter_running = True
            state.reddit_running = True
        
        script_path = os.path.join(cls.SCRIPTS_DIR, script_name)
        
        if not os.path.exists(script_path):
            raise ValueError(f"脚本不存在: {script_path}")
        
        # 创建动作队列
        action_queue = Queue()
        cls._action_queues[simulation_id] = action_queue
        
        # 启动模拟进程
        try:
            # 构建运行命令，使用完整路径
            # 新的日志结构：
            #   twitter/actions.jsonl - Twitter 动作日志
            #   reddit/actions.jsonl  - Reddit 动作日志
            #   simulation.log        - 主进程日志
            
            cmd = [
                sys.executable,  # Python解释器
                script_path,
                "--config", config_path,  # 使用完整配置文件路径
            ]
            
            # 如果指定了最大轮数，添加到命令行参数
            if max_rounds is not None and max_rounds > 0:
                cmd.extend(["--max-rounds", str(max_rounds)])
            
            # 创建主日志文件，避免 stdout/stderr 管道缓冲区满导致进程阻塞
            main_log_path = os.path.join(sim_dir, "simulation.log")
            main_log_file = open(main_log_path, 'w', encoding='utf-8')
            
            # 设置子进程环境变量，确保 Windows 上使用 UTF-8 编码
            # 这可以修复第三方库（如 OASIS）读取文件时未指定编码的问题
            env = os.environ.copy()
            env['PYTHONUTF8'] = '1'  # Python 3.7+ 支持，让所有 open() 默认使用 UTF-8
            env['PYTHONIOENCODING'] = 'utf-8'  # 确保 stdout/stderr 使用 UTF-8
            
            # 设置工作目录为模拟目录（数据库等文件会生成在此）
            # 使用 start_new_session=True 创建新的进程组，确保可以通过 os.killpg 终止所有子进程
            process = subprocess.Popen(
                cmd,
                cwd=sim_dir,
                stdout=main_log_file,
                stderr=subprocess.STDOUT,  # stderr 也写入同一个文件
                text=True,
                encoding='utf-8',  # 显式指定编码
                bufsize=1,
                env=env,  # 传递带有 UTF-8 设置的环境变量
                start_new_session=True,  # 创建新进程组，确保服务器关闭时能终止所有相关进程
            )
            
            # 保存文件句柄以便后续关闭
            cls._stdout_files[simulation_id] = main_log_file
            cls._stderr_files[simulation_id] = None  # 不再需要单独的 stderr
            
            state.process_pid = process.pid
            state.runner_status = RunnerStatus.RUNNING
            cls._processes[simulation_id] = process
            cls._save_run_state(state)
            
            # 启动监控线程
            monitor_thread = threading.Thread(
                target=cls._monitor_simulation,
                args=(simulation_id,),
                daemon=True
            )
            monitor_thread.start()
            cls._monitor_threads[simulation_id] = monitor_thread
            
            logger.info(f"模拟启动成功: {simulation_id}, pid={process.pid}, platform={platform}")
            
        except Exception as e:
            state.runner_status = RunnerStatus.FAILED
            state.error = str(e)
            cls._save_run_state(state)
            raise
        
        return state
    
    @classmethod
    def _monitor_simulation(cls, simulation_id: str):
        """监控模拟进程，解析动作日志"""
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        
        # 新的日志结构：分平台的动作日志
        twitter_actions_log = os.path.join(sim_dir, "twitter", "actions.jsonl")
        reddit_actions_log = os.path.join(sim_dir, "reddit", "actions.jsonl")
        
        process = cls._processes.get(simulation_id)
        state = cls.get_run_state(simulation_id)
        
        if not process or not state:
            return
        
        twitter_position = 0
        reddit_position = 0
        
        try:
            while process.poll() is None:  # 进程仍在运行
                # 读取 Twitter 动作日志
                if os.path.exists(twitter_actions_log):
                    twitter_position = cls._read_action_log(
                        twitter_actions_log, twitter_position, state, "twitter"
                    )
                
                # 读取 Reddit 动作日志
                if os.path.exists(reddit_actions_log):
                    reddit_position = cls._read_action_log(
                        reddit_actions_log, reddit_position, state, "reddit"
                    )
                
                # 更新状态
                cls._save_run_state(state)
                time.sleep(2)
            
            # 进程结束后，最后读取一次日志
            if os.path.exists(twitter_actions_log):
                cls._read_action_log(twitter_actions_log, twitter_position, state, "twitter")
            if os.path.exists(reddit_actions_log):
                cls._read_action_log(reddit_actions_log, reddit_position, state, "reddit")
            
            # 进程结束
            exit_code = process.returncode
            
            if exit_code == 0:
                state.runner_status = RunnerStatus.COMPLETED
                state.completed_at = datetime.now().isoformat()
                logger.info(f"模拟完成: {simulation_id}")
            else:
                state.runner_status = RunnerStatus.FAILED
                # 从主日志文件读取错误信息
                main_log_path = os.path.join(sim_dir, "simulation.log")
                error_info = ""
                try:
                    if os.path.exists(main_log_path):
                        with open(main_log_path, 'r', encoding='utf-8') as f:
                            error_info = f.read()[-2000:]  # 取最后2000字符
                except Exception:
                    pass
                state.error = f"进程退出码: {exit_code}, 错误: {error_info}"
                logger.error(f"模拟失败: {simulation_id}, error={state.error}")
            
            state.twitter_running = False
            state.reddit_running = False
            cls._save_run_state(state)
            
        except Exception as e:
            logger.error(f"监控线程异常: {simulation_id}, error={str(e)}")
            state.runner_status = RunnerStatus.FAILED
            state.error = str(e)
            cls._save_run_state(state)
        
        finally:
            # 停止图谱记忆更新器
            if cls._graph_memory_enabled.get(simulation_id, False):
                try:
                    ZepGraphMemoryManager.stop_updater(simulation_id)
                    logger.info(f"已停止图谱记忆更新: simulation_id={simulation_id}")
                except Exception as e:
                    logger.error(f"停止图谱记忆更新器失败: {e}")
                cls._graph_memory_enabled.pop(simulation_id, None)
            
            # 清理进程资源
            cls._processes.pop(simulation_id, None)
            cls._action_queues.pop(simulation_id, None)
            
            # 关闭日志文件句柄
            if simulation_id in cls._stdout_files:
                try:
                    cls._stdout_files[simulation_id].close()
                except Exception:
                    pass
                cls._stdout_files.pop(simulation_id, None)
            if simulation_id in cls._stderr_files and cls._stderr_files[simulation_id]:
                try:
                    cls._stderr_files[simulation_id].close()
                except Exception:
                    pass
                cls._stderr_files.pop(simulation_id, None)
    
    @classmethod
    def _read_action_log(
        cls, 
        log_path: str, 
        position: int, 
        state: SimulationRunState,
        platform: str
    ) -> int:
        """
        读取动作日志文件
        
        Args:
            log_path: 日志文件路径
            position: 上次读取位置
            state: 运行状态对象
            platform: 平台名称 (twitter/reddit)
            
        Returns:
            新的读取位置
        """
        # 检查是否启用了图谱记忆更新
        graph_memory_enabled = cls._graph_memory_enabled.get(state.simulation_id, False)
        graph_updater = None
        if graph_memory_enabled:
            graph_updater = ZepGraphMemoryManager.get_updater(state.simulation_id)
        
        try:
            with open(log_path, 'r', encoding='utf-8') as f:
                f.seek(position)
                for line in f:
                    line = line.strip()
                    if line:
                        try:
                            action_data = json.loads(line)
                            
                            # 处理事件类型的条目
                            if "event_type" in action_data:
                                event_type = action_data.get("event_type")
                                
                                # 检测 simulation_end 事件，标记平台已完成
                                if event_type == "simulation_end":
                                    if platform == "twitter":
                                        state.twitter_completed = True
                                        state.twitter_running = False
                                        logger.info(f"Twitter 模拟已完成: {state.simulation_id}, total_rounds={action_data.get('total_rounds')}, total_actions={action_data.get('total_actions')}")
                                    elif platform == "reddit":
                                        state.reddit_completed = True
                                        state.reddit_running = False
                                        logger.info(f"Reddit 模拟已完成: {state.simulation_id}, total_rounds={action_data.get('total_rounds')}, total_actions={action_data.get('total_actions')}")
                                    
                                    # 检查是否所有启用的平台都已完成
                                    # 如果只运行了一个平台，只检查那个平台
                                    # 如果运行了两个平台，需要两个都完成
                                    all_completed = cls._check_all_platforms_completed(state)
                                    if all_completed:
                                        state.runner_status = RunnerStatus.COMPLETED
                                        state.completed_at = datetime.now().isoformat()
                                        logger.info(f"所有平台模拟已完成: {state.simulation_id}")
                                
                                # 更新轮次信息（从 round_end 事件）
                                elif event_type == "round_end":
                                    round_num = action_data.get("round", 0)
                                    simulated_hours = action_data.get("simulated_hours", 0)
                                    
                                    # 更新各平台独立的轮次和时间
                                    if platform == "twitter":
                                        if round_num > state.twitter_current_round:
                                            state.twitter_current_round = round_num
                                        state.twitter_simulated_hours = simulated_hours
                                    elif platform == "reddit":
                                        if round_num > state.reddit_current_round:
                                            state.reddit_current_round = round_num
                                        state.reddit_simulated_hours = simulated_hours
                                    
                                    # 总体轮次取两个平台的最大值
                                    if round_num > state.current_round:
                                        state.current_round = round_num
                                    # 总体时间取两个平台的最大值
                                    state.simulated_hours = max(state.twitter_simulated_hours, state.reddit_simulated_hours)
                                
                                continue
                            
                            action = AgentAction(
                                round_num=action_data.get("round", 0),
                                timestamp=action_data.get("timestamp", datetime.now().isoformat()),
                                platform=platform,
                                agent_id=action_data.get("agent_id", 0),
                                agent_name=action_data.get("agent_name", ""),
                                action_type=action_data.get("action_type", ""),
                                action_args=action_data.get("action_args", {}),
                                result=action_data.get("result"),
                                success=action_data.get("success", True),
                            )
                            state.add_action(action)
                            
                            # 更新轮次
                            if action.round_num and action.round_num > state.current_round:
                                state.current_round = action.round_num
                            
                            # 如果启用了图谱记忆更新，将活动发送到Zep
                            if graph_updater:
                                graph_updater.add_activity_from_dict(action_data, platform)
                            
                        except json.JSONDecodeError:
                            pass
                return f.tell()
        except Exception as e:
            logger.warning(f"读取动作日志失败: {log_path}, error={e}")
            return position
    
    @classmethod
    def _check_all_platforms_completed(cls, state: SimulationRunState) -> bool:
        """
        检查所有启用的平台是否都已完成模拟
        
        通过检查对应的 actions.jsonl 文件是否存在来判断平台是否被启用
        
        Returns:
            True 如果所有启用的平台都已完成
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, state.simulation_id)
        twitter_log = os.path.join(sim_dir, "twitter", "actions.jsonl")
        reddit_log = os.path.join(sim_dir, "reddit", "actions.jsonl")
        
        # 检查哪些平台被启用（通过文件是否存在判断）
        twitter_enabled = os.path.exists(twitter_log)
        reddit_enabled = os.path.exists(reddit_log)
        
        # 如果平台被启用但未完成，则返回 False
        if twitter_enabled and not state.twitter_completed:
            return False
        if reddit_enabled and not state.reddit_completed:
            return False
        
        # 至少有一个平台被启用且已完成
        return twitter_enabled or reddit_enabled
    
    @classmethod
    def _terminate_process(cls, process: subprocess.Popen, simulation_id: str, timeout: int = 10):
        """
        跨平台终止进程及其子进程
        
        Args:
            process: 要终止的进程
            simulation_id: 模拟ID（用于日志）
            timeout: 等待进程退出的超时时间（秒）
        """
        if IS_WINDOWS:
            # Windows: 使用 taskkill 命令终止进程树
            # /F = 强制终止, /T = 终止进程树（包括子进程）
            logger.info(f"终止进程树 (Windows): simulation={simulation_id}, pid={process.pid}")
            try:
                # 先尝试优雅终止
                subprocess.run(
                    ['taskkill', '/PID', str(process.pid), '/T'],
                    capture_output=True,
                    timeout=5
                )
                try:
                    process.wait(timeout=timeout)
                except subprocess.TimeoutExpired:
                    # 强制终止
                    logger.warning(f"进程未响应，强制终止: {simulation_id}")
                    subprocess.run(
                        ['taskkill', '/F', '/PID', str(process.pid), '/T'],
                        capture_output=True,
                        timeout=5
                    )
                    process.wait(timeout=5)
            except Exception as e:
                logger.warning(f"taskkill 失败，尝试 terminate: {e}")
                process.terminate()
                try:
                    process.wait(timeout=5)
                except subprocess.TimeoutExpired:
                    process.kill()
        else:
            # Unix: 使用进程组终止
            # 由于使用了 start_new_session=True，进程组 ID 等于主进程 PID
            pgid = os.getpgid(process.pid)
            logger.info(f"终止进程组 (Unix): simulation={simulation_id}, pgid={pgid}")
            
            # 先发送 SIGTERM 给整个进程组
            os.killpg(pgid, signal.SIGTERM)
            
            try:
                process.wait(timeout=timeout)
            except subprocess.TimeoutExpired:
                # 如果超时后还没结束，强制发送 SIGKILL
                logger.warning(f"进程组未响应 SIGTERM，强制终止: {simulation_id}")
                os.killpg(pgid, signal.SIGKILL)
                process.wait(timeout=5)
    
    @classmethod
    def stop_simulation(cls, simulation_id: str) -> SimulationRunState:
        """停止模拟"""
        state = cls.get_run_state(simulation_id)
        if not state:
            raise ValueError(f"模拟不存在: {simulation_id}")
        
        if state.runner_status not in [RunnerStatus.RUNNING, RunnerStatus.PAUSED]:
            raise ValueError(f"模拟未在运行: {simulation_id}, status={state.runner_status}")
        
        state.runner_status = RunnerStatus.STOPPING
        cls._save_run_state(state)
        
        # 终止进程
        process = cls._processes.get(simulation_id)
        if process and process.poll() is None:
            try:
                cls._terminate_process(process, simulation_id)
            except ProcessLookupError:
                # 进程已经不存在
                pass
            except Exception as e:
                logger.error(f"终止进程组失败: {simulation_id}, error={e}")
                # 回退到直接终止进程
                try:
                    process.terminate()
                    process.wait(timeout=5)
                except Exception:
                    process.kill()
        
        state.runner_status = RunnerStatus.STOPPED
        state.twitter_running = False
        state.reddit_running = False
        state.completed_at = datetime.now().isoformat()
        cls._save_run_state(state)
        
        # 停止图谱记忆更新器
        if cls._graph_memory_enabled.get(simulation_id, False):
            try:
                ZepGraphMemoryManager.stop_updater(simulation_id)
                logger.info(f"已停止图谱记忆更新: simulation_id={simulation_id}")
            except Exception as e:
                logger.error(f"停止图谱记忆更新器失败: {e}")
            cls._graph_memory_enabled.pop(simulation_id, None)
        
        logger.info(f"模拟已停止: {simulation_id}")
        return state
    
    @classmethod
    def _read_actions_from_file(
        cls,
        file_path: str,
        default_platform: Optional[str] = None,
        platform_filter: Optional[str] = None,
        agent_id: Optional[int] = None,
        round_num: Optional[int] = None
    ) -> List[AgentAction]:
        """
        从单个动作文件中读取动作
        
        Args:
            file_path: 动作日志文件路径
            default_platform: 默认平台（当动作记录中没有 platform 字段时使用）
            platform_filter: 过滤平台
            agent_id: 过滤 Agent ID
            round_num: 过滤轮次
        """
        if not os.path.exists(file_path):
            return []
        
        actions = []
        
        with open(file_path, 'r', encoding='utf-8') as f:
            for line in f:
                line = line.strip()
                if not line:
                    continue
                
                try:
                    data = json.loads(line)
                    
                    # 跳过非动作记录（如 simulation_start, round_start, round_end 等事件）
                    if "event_type" in data:
                        continue
                    
                    # 跳过没有 agent_id 的记录（非 Agent 动作）
                    if "agent_id" not in data:
                        continue
                    
                    # 获取平台：优先使用记录中的 platform，否则使用默认平台
                    record_platform = data.get("platform") or default_platform or ""
                    
                    # 过滤
                    if platform_filter and record_platform != platform_filter:
                        continue
                    if agent_id is not None and data.get("agent_id") != agent_id:
                        continue
                    if round_num is not None and data.get("round") != round_num:
                        continue
                    
                    actions.append(AgentAction(
                        round_num=data.get("round", 0),
                        timestamp=data.get("timestamp", ""),
                        platform=record_platform,
                        agent_id=data.get("agent_id", 0),
                        agent_name=data.get("agent_name", ""),
                        action_type=data.get("action_type", ""),
                        action_args=data.get("action_args", {}),
                        result=data.get("result"),
                        success=data.get("success", True),
                    ))
                    
                except json.JSONDecodeError:
                    continue
        
        return actions
    
    @classmethod
    def get_all_actions(
        cls,
        simulation_id: str,
        platform: Optional[str] = None,
        agent_id: Optional[int] = None,
        round_num: Optional[int] = None
    ) -> List[AgentAction]:
        """
        获取所有平台的完整动作历史（无分页限制）
        
        Args:
            simulation_id: 模拟ID
            platform: 过滤平台（twitter/reddit）
            agent_id: 过滤Agent
            round_num: 过滤轮次
            
        Returns:
            完整的动作列表（按时间戳排序，新的在前）
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        actions = []
        
        # 读取 Twitter 动作文件（根据文件路径自动设置 platform 为 twitter）
        twitter_actions_log = os.path.join(sim_dir, "twitter", "actions.jsonl")
        if not platform or platform == "twitter":
            actions.extend(cls._read_actions_from_file(
                twitter_actions_log,
                default_platform="twitter",  # 自动填充 platform 字段
                platform_filter=platform,
                agent_id=agent_id, 
                round_num=round_num
            ))
        
        # 读取 Reddit 动作文件（根据文件路径自动设置 platform 为 reddit）
        reddit_actions_log = os.path.join(sim_dir, "reddit", "actions.jsonl")
        if not platform or platform == "reddit":
            actions.extend(cls._read_actions_from_file(
                reddit_actions_log,
                default_platform="reddit",  # 自动填充 platform 字段
                platform_filter=platform,
                agent_id=agent_id,
                round_num=round_num
            ))
        
        # 如果分平台文件不存在，尝试读取旧的单一文件格式
        if not actions:
            actions_log = os.path.join(sim_dir, "actions.jsonl")
            actions = cls._read_actions_from_file(
                actions_log,
                default_platform=None,  # 旧格式文件中应该有 platform 字段
                platform_filter=platform,
                agent_id=agent_id,
                round_num=round_num
            )
        
        # 按时间戳排序（新的在前）
        actions.sort(key=lambda x: x.timestamp, reverse=True)
        
        return actions
    
    @classmethod
    def get_actions(
        cls,
        simulation_id: str,
        limit: int = 100,
        offset: int = 0,
        platform: Optional[str] = None,
        agent_id: Optional[int] = None,
        round_num: Optional[int] = None
    ) -> List[AgentAction]:
        """
        获取动作历史（带分页）
        
        Args:
            simulation_id: 模拟ID
            limit: 返回数量限制
            offset: 偏移量
            platform: 过滤平台
            agent_id: 过滤Agent
            round_num: 过滤轮次
            
        Returns:
            动作列表
        """
        actions = cls.get_all_actions(
            simulation_id=simulation_id,
            platform=platform,
            agent_id=agent_id,
            round_num=round_num
        )
        
        # 分页
        return actions[offset:offset + limit]
    
    @classmethod
    def get_timeline(
        cls,
        simulation_id: str,
        start_round: int = 0,
        end_round: Optional[int] = None
    ) -> List[Dict[str, Any]]:
        """
        获取模拟时间线（按轮次汇总）
        
        Args:
            simulation_id: 模拟ID
            start_round: 起始轮次
            end_round: 结束轮次
            
        Returns:
            每轮的汇总信息
        """
        actions = cls.get_actions(simulation_id, limit=10000)
        
        # 按轮次分组
        rounds: Dict[int, Dict[str, Any]] = {}
        
        for action in actions:
            round_num = action.round_num
            
            if round_num < start_round:
                continue
            if end_round is not None and round_num > end_round:
                continue
            
            if round_num not in rounds:
                rounds[round_num] = {
                    "round_num": round_num,
                    "twitter_actions": 0,
                    "reddit_actions": 0,
                    "active_agents": set(),
                    "action_types": {},
                    "first_action_time": action.timestamp,
                    "last_action_time": action.timestamp,
                }
            
            r = rounds[round_num]
            
            if action.platform == "twitter":
                r["twitter_actions"] += 1
            else:
                r["reddit_actions"] += 1
            
            r["active_agents"].add(action.agent_id)
            r["action_types"][action.action_type] = r["action_types"].get(action.action_type, 0) + 1
            r["last_action_time"] = action.timestamp
        
        # 转换为列表
        result = []
        for round_num in sorted(rounds.keys()):
            r = rounds[round_num]
            result.append({
                "round_num": round_num,
                "twitter_actions": r["twitter_actions"],
                "reddit_actions": r["reddit_actions"],
                "total_actions": r["twitter_actions"] + r["reddit_actions"],
                "active_agents_count": len(r["active_agents"]),
                "active_agents": list(r["active_agents"]),
                "action_types": r["action_types"],
                "first_action_time": r["first_action_time"],
                "last_action_time": r["last_action_time"],
            })
        
        return result
    
    @classmethod
    def get_agent_stats(cls, simulation_id: str) -> List[Dict[str, Any]]:
        """
        获取每个Agent的统计信息
        
        Returns:
            Agent统计列表
        """
        actions = cls.get_actions(simulation_id, limit=10000)
        
        agent_stats: Dict[int, Dict[str, Any]] = {}
        
        for action in actions:
            agent_id = action.agent_id
            
            if agent_id not in agent_stats:
                agent_stats[agent_id] = {
                    "agent_id": agent_id,
                    "agent_name": action.agent_name,
                    "total_actions": 0,
                    "twitter_actions": 0,
                    "reddit_actions": 0,
                    "action_types": {},
                    "first_action_time": action.timestamp,
                    "last_action_time": action.timestamp,
                }
            
            stats = agent_stats[agent_id]
            stats["total_actions"] += 1
            
            if action.platform == "twitter":
                stats["twitter_actions"] += 1
            else:
                stats["reddit_actions"] += 1
            
            stats["action_types"][action.action_type] = stats["action_types"].get(action.action_type, 0) + 1
            stats["last_action_time"] = action.timestamp
        
        # 按总动作数排序
        result = sorted(agent_stats.values(), key=lambda x: x["total_actions"], reverse=True)
        
        return result
    
    @classmethod
    def cleanup_simulation_logs(cls, simulation_id: str) -> Dict[str, Any]:
        """
        清理模拟的运行日志（用于强制重新开始模拟）
        
        会删除以下文件：
        - run_state.json
        - twitter/actions.jsonl
        - reddit/actions.jsonl
        - simulation.log
        - stdout.log / stderr.log
        - twitter_simulation.db（模拟数据库）
        - reddit_simulation.db（模拟数据库）
        - env_status.json（环境状态）
        
        注意：不会删除配置文件（simulation_config.json）和 profile 文件
        
        Args:
            simulation_id: 模拟ID
            
        Returns:
            清理结果信息
        """
        import shutil
        
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        
        if not os.path.exists(sim_dir):
            return {"success": True, "message": "模拟目录不存在，无需清理"}
        
        cleaned_files = []
        errors = []
        
        # 要删除的文件列表（包括数据库文件）
        files_to_delete = [
            "run_state.json",
            "simulation.log",
            "stdout.log",
            "stderr.log",
            "twitter_simulation.db",  # Twitter 平台数据库
            "reddit_simulation.db",   # Reddit 平台数据库
            "env_status.json",        # 环境状态文件
        ]
        
        # 要删除的目录列表（包含动作日志）
        dirs_to_clean = ["twitter", "reddit"]
        
        # 删除文件
        for filename in files_to_delete:
            file_path = os.path.join(sim_dir, filename)
            if os.path.exists(file_path):
                try:
                    os.remove(file_path)
                    cleaned_files.append(filename)
                except Exception as e:
                    errors.append(f"删除 {filename} 失败: {str(e)}")
        
        # 清理平台目录中的动作日志
        for dir_name in dirs_to_clean:
            dir_path = os.path.join(sim_dir, dir_name)
            if os.path.exists(dir_path):
                actions_file = os.path.join(dir_path, "actions.jsonl")
                if os.path.exists(actions_file):
                    try:
                        os.remove(actions_file)
                        cleaned_files.append(f"{dir_name}/actions.jsonl")
                    except Exception as e:
                        errors.append(f"删除 {dir_name}/actions.jsonl 失败: {str(e)}")
        
        # 清理内存中的运行状态
        if simulation_id in cls._run_states:
            del cls._run_states[simulation_id]
        
        logger.info(f"清理模拟日志完成: {simulation_id}, 删除文件: {cleaned_files}")
        
        return {
            "success": len(errors) == 0,
            "cleaned_files": cleaned_files,
            "errors": errors if errors else None
        }
    
    # 防止重复清理的标志
    _cleanup_done = False
    
    @classmethod
    def cleanup_all_simulations(cls):
        """
        清理所有运行中的模拟进程
        
        在服务器关闭时调用，确保所有子进程被终止
        """
        # 防止重复清理
        if cls._cleanup_done:
            return
        cls._cleanup_done = True
        
        # 检查是否有内容需要清理（避免空进程的进程打印无用日志）
        has_processes = bool(cls._processes)
        has_updaters = bool(cls._graph_memory_enabled)
        
        if not has_processes and not has_updaters:
            return  # 没有需要清理的内容，静默返回
        
        logger.info("正在清理所有模拟进程...")
        
        # 首先停止所有图谱记忆更新器（stop_all 内部会打印日志）
        try:
            ZepGraphMemoryManager.stop_all()
        except Exception as e:
            logger.error(f"停止图谱记忆更新器失败: {e}")
        cls._graph_memory_enabled.clear()
        
        # 复制字典以避免在迭代时修改
        processes = list(cls._processes.items())
        
        for simulation_id, process in processes:
            try:
                if process.poll() is None:  # 进程仍在运行
                    logger.info(f"终止模拟进程: {simulation_id}, pid={process.pid}")
                    
                    try:
                        # 使用跨平台的进程终止方法
                        cls._terminate_process(process, simulation_id, timeout=5)
                    except (ProcessLookupError, OSError):
                        # 进程可能已经不存在，尝试直接终止
                        try:
                            process.terminate()
                            process.wait(timeout=3)
                        except Exception:
                            process.kill()
                    
                    # 更新 run_state.json
                    state = cls.get_run_state(simulation_id)
                    if state:
                        state.runner_status = RunnerStatus.STOPPED
                        state.twitter_running = False
                        state.reddit_running = False
                        state.completed_at = datetime.now().isoformat()
                        state.error = "服务器关闭，模拟被终止"
                        cls._save_run_state(state)
                    
                    # 同时更新 state.json，将状态设为 stopped
                    try:
                        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
                        state_file = os.path.join(sim_dir, "state.json")
                        logger.info(f"尝试更新 state.json: {state_file}")
                        if os.path.exists(state_file):
                            with open(state_file, 'r', encoding='utf-8') as f:
                                state_data = json.load(f)
                            state_data['status'] = 'stopped'
                            state_data['updated_at'] = datetime.now().isoformat()
                            with open(state_file, 'w', encoding='utf-8') as f:
                                json.dump(state_data, f, indent=2, ensure_ascii=False)
                            logger.info(f"已更新 state.json 状态为 stopped: {simulation_id}")
                        else:
                            logger.warning(f"state.json 不存在: {state_file}")
                    except Exception as state_err:
                        logger.warning(f"更新 state.json 失败: {simulation_id}, error={state_err}")
                        
            except Exception as e:
                logger.error(f"清理进程失败: {simulation_id}, error={e}")
        
        # 清理文件句柄
        for simulation_id, file_handle in list(cls._stdout_files.items()):
            try:
                if file_handle:
                    file_handle.close()
            except Exception:
                pass
        cls._stdout_files.clear()
        
        for simulation_id, file_handle in list(cls._stderr_files.items()):
            try:
                if file_handle:
                    file_handle.close()
            except Exception:
                pass
        cls._stderr_files.clear()
        
        # 清理内存中的状态
        cls._processes.clear()
        cls._action_queues.clear()
        
        logger.info("模拟进程清理完成")
    
    @classmethod
    def register_cleanup(cls):
        """
        注册清理函数
        
        在 Flask 应用启动时调用，确保服务器关闭时清理所有模拟进程
        """
        global _cleanup_registered
        
        if _cleanup_registered:
            return
        
        # Flask debug 模式下，只在 reloader 子进程中注册清理（实际运行应用的进程）
        # WERKZEUG_RUN_MAIN=true 表示是 reloader 子进程
        # 如果不是 debug 模式，则没有这个环境变量，也需要注册
        is_reloader_process = os.environ.get('WERKZEUG_RUN_MAIN') == 'true'
        is_debug_mode = os.environ.get('FLASK_DEBUG') == '1' or os.environ.get('WERKZEUG_RUN_MAIN') is not None
        
        # 在 debug 模式下，只在 reloader 子进程中注册；非 debug 模式下始终注册
        if is_debug_mode and not is_reloader_process:
            _cleanup_registered = True  # 标记已注册，防止子进程再次尝试
            return
        
        # 保存原有的信号处理器
        original_sigint = signal.getsignal(signal.SIGINT)
        original_sigterm = signal.getsignal(signal.SIGTERM)
        # SIGHUP 只在 Unix 系统存在（macOS/Linux），Windows 没有
        original_sighup = None
        has_sighup = hasattr(signal, 'SIGHUP')
        if has_sighup:
            original_sighup = signal.getsignal(signal.SIGHUP)
        
        def cleanup_handler(signum=None, frame=None):
            """信号处理器：先清理模拟进程，再调用原处理器"""
            # 只有在有进程需要清理时才打印日志
            if cls._processes or cls._graph_memory_enabled:
                logger.info(f"收到信号 {signum}，开始清理...")
            cls.cleanup_all_simulations()
            
            # 调用原有的信号处理器，让 Flask 正常退出
            if signum == signal.SIGINT and callable(original_sigint):
                original_sigint(signum, frame)
            elif signum == signal.SIGTERM and callable(original_sigterm):
                original_sigterm(signum, frame)
            elif has_sighup and signum == signal.SIGHUP:
                # SIGHUP: 终端关闭时发送
                if callable(original_sighup):
                    original_sighup(signum, frame)
                else:
                    # 默认行为：正常退出
                    sys.exit(0)
            else:
                # 如果原处理器不可调用（如 SIG_DFL），则使用默认行为
                raise KeyboardInterrupt
        
        # 注册 atexit 处理器（作为备用）
        atexit.register(cls.cleanup_all_simulations)
        
        # 注册信号处理器（仅在主线程中）
        try:
            # SIGTERM: kill 命令默认信号
            signal.signal(signal.SIGTERM, cleanup_handler)
            # SIGINT: Ctrl+C
            signal.signal(signal.SIGINT, cleanup_handler)
            # SIGHUP: 终端关闭（仅 Unix 系统）
            if has_sighup:
                signal.signal(signal.SIGHUP, cleanup_handler)
        except ValueError:
            # 不在主线程中，只能使用 atexit
            logger.warning("无法注册信号处理器（不在主线程），仅使用 atexit")
        
        _cleanup_registered = True
    
    @classmethod
    def get_running_simulations(cls) -> List[str]:
        """
        获取所有正在运行的模拟ID列表
        """
        running = []
        for sim_id, process in cls._processes.items():
            if process.poll() is None:
                running.append(sim_id)
        return running
    
    # ============== Interview 功能 ==============
    
    @classmethod
    def check_env_alive(cls, simulation_id: str) -> bool:
        """
        检查模拟环境是否存活（可以接收Interview命令）

        Args:
            simulation_id: 模拟ID

        Returns:
            True 表示环境存活，False 表示环境已关闭
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        if not os.path.exists(sim_dir):
            return False

        ipc_client = SimulationIPCClient(sim_dir)
        return ipc_client.check_env_alive()

    @classmethod
    def get_env_status_detail(cls, simulation_id: str) -> Dict[str, Any]:
        """
        获取模拟环境的详细状态信息

        Args:
            simulation_id: 模拟ID

        Returns:
            状态详情字典，包含 status, twitter_available, reddit_available, timestamp
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        status_file = os.path.join(sim_dir, "env_status.json")
        
        default_status = {
            "status": "stopped",
            "twitter_available": False,
            "reddit_available": False,
            "timestamp": None
        }
        
        if not os.path.exists(status_file):
            return default_status
        
        try:
            with open(status_file, 'r', encoding='utf-8') as f:
                status = json.load(f)
            return {
                "status": status.get("status", "stopped"),
                "twitter_available": status.get("twitter_available", False),
                "reddit_available": status.get("reddit_available", False),
                "timestamp": status.get("timestamp")
            }
        except (json.JSONDecodeError, OSError):
            return default_status

    @classmethod
    def interview_agent(
        cls,
        simulation_id: str,
        agent_id: int,
        prompt: str,
        platform: str = None,
        timeout: float = 60.0
    ) -> Dict[str, Any]:
        """
        采访单个Agent

        Args:
            simulation_id: 模拟ID
            agent_id: Agent ID
            prompt: 采访问题
            platform: 指定平台（可选）
                - "twitter": 只采访Twitter平台
                - "reddit": 只采访Reddit平台
                - None: 双平台模拟时同时采访两个平台，返回整合结果
            timeout: 超时时间（秒）

        Returns:
            采访结果字典

        Raises:
            ValueError: 模拟不存在或环境未运行
            TimeoutError: 等待响应超时
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        if not os.path.exists(sim_dir):
            raise ValueError(f"模拟不存在: {simulation_id}")

        ipc_client = SimulationIPCClient(sim_dir)

        if not ipc_client.check_env_alive():
            raise ValueError(f"模拟环境未运行或已关闭，无法执行Interview: {simulation_id}")

        logger.info(f"发送Interview命令: simulation_id={simulation_id}, agent_id={agent_id}, platform={platform}")

        response = ipc_client.send_interview(
            agent_id=agent_id,
            prompt=prompt,
            platform=platform,
            timeout=timeout
        )

        if response.status.value == "completed":
            return {
                "success": True,
                "agent_id": agent_id,
                "prompt": prompt,
                "result": response.result,
                "timestamp": response.timestamp
            }
        else:
            return {
                "success": False,
                "agent_id": agent_id,
                "prompt": prompt,
                "error": response.error,
                "timestamp": response.timestamp
            }
    
    @classmethod
    def interview_agents_batch(
        cls,
        simulation_id: str,
        interviews: List[Dict[str, Any]],
        platform: str = None,
        timeout: float = 120.0
    ) -> Dict[str, Any]:
        """
        批量采访多个Agent

        Args:
            simulation_id: 模拟ID
            interviews: 采访列表，每个元素包含 {"agent_id": int, "prompt": str, "platform": str(可选)}
            platform: 默认平台（可选，会被每个采访项的platform覆盖）
                - "twitter": 默认只采访Twitter平台
                - "reddit": 默认只采访Reddit平台
                - None: 双平台模拟时每个Agent同时采访两个平台
            timeout: 超时时间（秒）

        Returns:
            批量采访结果字典

        Raises:
            ValueError: 模拟不存在或环境未运行
            TimeoutError: 等待响应超时
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        if not os.path.exists(sim_dir):
            raise ValueError(f"模拟不存在: {simulation_id}")

        ipc_client = SimulationIPCClient(sim_dir)

        if not ipc_client.check_env_alive():
            raise ValueError(f"模拟环境未运行或已关闭，无法执行Interview: {simulation_id}")

        logger.info(f"发送批量Interview命令: simulation_id={simulation_id}, count={len(interviews)}, platform={platform}")

        response = ipc_client.send_batch_interview(
            interviews=interviews,
            platform=platform,
            timeout=timeout
        )

        if response.status.value == "completed":
            return {
                "success": True,
                "interviews_count": len(interviews),
                "result": response.result,
                "timestamp": response.timestamp
            }
        else:
            return {
                "success": False,
                "interviews_count": len(interviews),
                "error": response.error,
                "timestamp": response.timestamp
            }
    
    @classmethod
    def interview_all_agents(
        cls,
        simulation_id: str,
        prompt: str,
        platform: str = None,
        timeout: float = 180.0
    ) -> Dict[str, Any]:
        """
        采访所有Agent（全局采访）

        使用相同的问题采访模拟中的所有Agent

        Args:
            simulation_id: 模拟ID
            prompt: 采访问题（所有Agent使用相同问题）
            platform: 指定平台（可选）
                - "twitter": 只采访Twitter平台
                - "reddit": 只采访Reddit平台
                - None: 双平台模拟时每个Agent同时采访两个平台
            timeout: 超时时间（秒）

        Returns:
            全局采访结果字典
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        if not os.path.exists(sim_dir):
            raise ValueError(f"模拟不存在: {simulation_id}")

        # 从配置文件获取所有Agent信息
        config_path = os.path.join(sim_dir, "simulation_config.json")
        if not os.path.exists(config_path):
            raise ValueError(f"模拟配置不存在: {simulation_id}")

        with open(config_path, 'r', encoding='utf-8') as f:
            config = json.load(f)

        agent_configs = config.get("agent_configs", [])
        if not agent_configs:
            raise ValueError(f"模拟配置中没有Agent: {simulation_id}")

        # 构建批量采访列表
        interviews = []
        for agent_config in agent_configs:
            agent_id = agent_config.get("agent_id")
            if agent_id is not None:
                interviews.append({
                    "agent_id": agent_id,
                    "prompt": prompt
                })

        logger.info(f"发送全局Interview命令: simulation_id={simulation_id}, agent_count={len(interviews)}, platform={platform}")

        return cls.interview_agents_batch(
            simulation_id=simulation_id,
            interviews=interviews,
            platform=platform,
            timeout=timeout
        )
    
    @classmethod
    def close_simulation_env(
        cls,
        simulation_id: str,
        timeout: float = 30.0
    ) -> Dict[str, Any]:
        """
        关闭模拟环境（而不是停止模拟进程）
        
        向模拟发送关闭环境命令，使其优雅退出等待命令模式
        
        Args:
            simulation_id: 模拟ID
            timeout: 超时时间（秒）
            
        Returns:
            操作结果字典
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        if not os.path.exists(sim_dir):
            raise ValueError(f"模拟不存在: {simulation_id}")
        
        ipc_client = SimulationIPCClient(sim_dir)
        
        if not ipc_client.check_env_alive():
            return {
                "success": True,
                "message": "环境已经关闭"
            }
        
        logger.info(f"发送关闭环境命令: simulation_id={simulation_id}")
        
        try:
            response = ipc_client.send_close_env(timeout=timeout)
            
            return {
                "success": response.status.value == "completed",
                "message": "环境关闭命令已发送",
                "result": response.result,
                "timestamp": response.timestamp
            }
        except TimeoutError:
            # 超时可能是因为环境正在关闭
            return {
                "success": True,
                "message": "环境关闭命令已发送（等待响应超时，环境可能正在关闭）"
            }
    
    @classmethod
    def _get_interview_history_from_db(
        cls,
        db_path: str,
        platform_name: str,
        agent_id: Optional[int] = None,
        limit: int = 100
    ) -> List[Dict[str, Any]]:
        """从单个数据库获取Interview历史"""
        import sqlite3
        
        if not os.path.exists(db_path):
            return []
        
        results = []
        
        try:
            conn = sqlite3.connect(db_path)
            cursor = conn.cursor()
            
            if agent_id is not None:
                cursor.execute("""
                    SELECT user_id, info, created_at
                    FROM trace
                    WHERE action = 'interview' AND user_id = ?
                    ORDER BY created_at DESC
                    LIMIT ?
                """, (agent_id, limit))
            else:
                cursor.execute("""
                    SELECT user_id, info, created_at
                    FROM trace
                    WHERE action = 'interview'
                    ORDER BY created_at DESC
                    LIMIT ?
                """, (limit,))
            
            for user_id, info_json, created_at in cursor.fetchall():
                try:
                    info = json.loads(info_json) if info_json else {}
                except json.JSONDecodeError:
                    info = {"raw": info_json}
                
                results.append({
                    "agent_id": user_id,
                    "response": info.get("response", info),
                    "prompt": info.get("prompt", ""),
                    "timestamp": created_at,
                    "platform": platform_name
                })
            
            conn.close()
            
        except Exception as e:
            logger.error(f"读取Interview历史失败 ({platform_name}): {e}")
        
        return results

    @classmethod
    def get_interview_history(
        cls,
        simulation_id: str,
        platform: str = None,
        agent_id: Optional[int] = None,
        limit: int = 100
    ) -> List[Dict[str, Any]]:
        """
        获取Interview历史记录（从数据库读取）
        
        Args:
            simulation_id: 模拟ID
            platform: 平台类型（reddit/twitter/None）
                - "reddit": 只获取Reddit平台的历史
                - "twitter": 只获取Twitter平台的历史
                - None: 获取两个平台的所有历史
            agent_id: 指定Agent ID（可选，只获取该Agent的历史）
            limit: 每个平台返回数量限制
            
        Returns:
            Interview历史记录列表
        """
        sim_dir = os.path.join(cls.RUN_STATE_DIR, simulation_id)
        
        results = []
        
        # 确定要查询的平台
        if platform in ("reddit", "twitter"):
            platforms = [platform]
        else:
            # 不指定platform时，查询两个平台
            platforms = ["twitter", "reddit"]
        
        for p in platforms:
            db_path = os.path.join(sim_dir, f"{p}_simulation.db")
            platform_results = cls._get_interview_history_from_db(
                db_path=db_path,
                platform_name=p,
                agent_id=agent_id,
                limit=limit
            )
            results.extend(platform_results)
        
        # 按时间降序排序
        results.sort(key=lambda x: x.get("timestamp", ""), reverse=True)
        
        # 如果查询了多个平台，限制总数
        if len(platforms) > 1 and len(results) > limit:
            results = results[:limit]
        
        return results