from django.http import JsonResponse
from .tasks import monitor_process, get_process_gpu_usage
import threading
import psutil
from .models import HighCPUProcess, HighGPUProcess, HighMemoryProcess, AllResourceProcess, TiktokUserVideos
import logging
import os
from datetime import datetime
import time
import nvidia_smi
from django.utils import timezone
from django.views.decorators.http import require_http_methods
from django.views.decorators.csrf import csrf_exempt
from django.shortcuts import render
import pytz
from pathlib import Path  # 使用 pathlib 处理跨平台路径
import json
from django.conf import settings
import requests
import threading
from collections import deque
from celery import shared_task
import uuid
from functools import wraps
from datetime import timedelta
import redis
from concurrent.futures import ThreadPoolExecutor, as_completed
from yt_dlp import YoutubeDL

directory_monitoring = {}

# 全局变量来控制检测线程
monitor_thread = None
is_monitoring = False

# 在文件开头定义日志目录
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
LOG_DIR = os.path.join(BASE_DIR, 'logs', 'process_monitor')

# 创建保存视频的基本路径
TIKTOK_VIDEOS_PATH = os.path.join(BASE_DIR, 'media', 'tiktok_videos')

# 确保基本目录存在
os.makedirs(TIKTOK_VIDEOS_PATH, exist_ok=True)

# 确保基础目录结构存在，添加 'all' 目录
for resource_type in ['cpu', 'memory', 'gpu', 'all']:
    os.makedirs(os.path.join(LOG_DIR, resource_type), exist_ok=True)

# 获取应用专属的logger
logger = logging.getLogger('monitor')

# 全局变量来跟踪监控的目录
monitored_directories = set()

# 在文件顶部添加 API 基础 URL
API_BASE_URL = "http://81.69.223.133:45268"

# 创建Redis连接
redis_client = redis.Redis.from_url(settings.CELERY_BROKER_URL)

# 替代原来的TASK_STATUS字典方法
def set_task_status(task_id, status_data):
    """在Redis中存储任务状态"""
    redis_client.set(f"task_status:{task_id}", json.dumps(status_data))
    
def get_task_status(task_id):
    """从Redis获取任务状态"""
    data = redis_client.get(f"task_status:{task_id}")
    if data:
        return json.loads(data)
    return None
    
def update_task_status(task_id, updates):
    """更新任务状态的部分字段"""
    status = get_task_status(task_id)
    if status:
        status.update(updates)
        set_task_status(task_id, status)
        return True
    return False

# 添加新的监控线程函数
def monitor_directory(directory):
    """持续监控目录的后台任务"""
    monitor_interval = settings.MONITOR_INTERVAL  # 监控间隔（5秒）
    log_interval = settings.LOG_INTERVAL  # 日志写入间隔（60秒）
    processed_pids = set()  # 用于跟踪已处理的PID
    last_log_time = {}  # 每个进程的最后日志时间
    
    while directory_monitoring.get(directory, False):
        try:
            next_update = timezone.now() + timezone.timedelta(seconds=monitor_interval)
            
            processes = find_python_processes_in_dir(directory)
            for proc in processes:
                pid = proc['pid']
                try:
                    # 设置日志文件
                    log_file = setup_process_logger(pid, 'all')
                    if log_file:
                        process = psutil.Process(pid)
                        data = get_process_data(process)
                        
                        # 更新数据库
                        AllResourceProcess.objects.update_or_create(
                            pid=pid,
                            defaults={
                                'process_name': process.name(),
                                'cpu_usage': float(data['cpu']['usage'].replace('%', '')),
                                'cpu_user_time': float(data['cpu']['user_time'].replace('s', '')),
                                'cpu_system_time': float(data['cpu']['system_time'].replace('s', '')),
                                'memory_usage': float(data['memory']['physical'].split('MB')[0].strip()),
                                'memory_percent': float(data['memory']['physical'].split('(')[1].split('%')[0].strip()),
                                'virtual_memory': float(data['memory']['virtual'].split('MB')[0].strip()),
                                'gpu_usage': float(data['gpu']['usage'].replace('%', '')),
                                'gpu_memory': float(data['gpu']['memory'].replace('MB', '')),
                                'net_io_sent': float(data['io']['write'].split('MB')[0].strip()),
                                'net_io_recv': float(data['io']['read'].split('MB')[0].strip()),
                                'is_active': True,
                                'status': 1,
                                'log_file': log_file
                            }
                        )
                        
                        now = timezone.now()
                        # 如果是新检测到的进程，立即写入日志
                        if pid not in processed_pids:
                            print(f"首次检测到进程，立即写入日志: PID={pid}")  # 调试日志
                            log_process_metrics(pid, data, log_file)
                            processed_pids.add(pid)
                            last_log_time[pid] = now
                        # 对于已知进程，每隔一分钟写入一次
                        elif (now - last_log_time.get(pid, now)).total_seconds() >= log_interval:
                            print(f"定期写入日志: PID={pid}")  # 调试日志
                            log_process_metrics(pid, data, log_file)
                            last_log_time[pid] = now
                        
                except Exception as e:
                    logger.error(f"监控进程 {pid} 失败: {str(e)}")
            
            # 计算需要等待的时间
            now = timezone.now()
            if next_update > now:
                time.sleep((next_update - now).total_seconds())
                
        except Exception as e:
            logger.error(f"目录监控出错: {str(e)}")
            time.sleep(5)

def get_python_processes(directory):
    """获取指定目录下的Python进程"""
    directory = str(Path(directory).resolve()).lower()
    processes = []
    
    for proc in psutil.process_iter(['pid', 'name', 'cmdline']):
        try:
            if 'python' in proc.info['name'].lower():
                process = psutil.Process(proc.info['pid'])
                try:
                    proc_cwd = str(Path(process.cwd()).resolve()).lower()
                    if directory in proc_cwd or proc_cwd.startswith(directory):
                        processes.append(process)
                except (psutil.NoSuchProcess, psutil.AccessDenied):
                    continue
        except (psutil.NoSuchProcess, psutil.AccessDenied):
            continue
            
    return processes

def get_process_info(process):
    """获取进程详细信息"""
    try:
        with process.oneshot():
            info = {
                'pid': process.pid,
                'name': process.name(),
                'cpu_usage': process.cpu_percent(),
                'memory_usage': process.memory_info().rss / (1024 * 1024),  # MB
                'command_line': ' '.join(process.cmdline()),
                'create_time': process.create_time(),
                'status': process.status(),
                'threads': process.num_threads(),
                'working_directory': process.cwd(),
                'gpu_info': {
                    'usage': 0,
                    'memory': 0
                }
            }
            
            # 获取IO信息
            try:
                io = process.io_counters()
                info['io'] = {
                    'read_bytes': io.read_bytes / (1024 * 1024),  # MB
                    'write_bytes': io.write_bytes / (1024 * 1024),  # MB
                    'read_count': io.read_count,
                    'write_count': io.write_count
                }
            except (psutil.NoSuchProcess, psutil.AccessDenied):
                info['io'] = {
                    'read_bytes': 0,
                    'write_bytes': 0,
                    'read_count': 0,
                    'write_count': 0
                }
                
            return info
    except (psutil.NoSuchProcess, psutil.AccessDenied) as e:
        logger.error(f"获取进程 {process.pid} 信息失败: {str(e)}")
        return None

@csrf_exempt
@require_http_methods(["POST"])
def scan_directory(request):
    """扫描目录下的 Python 进程"""
    try:
        data = json.loads(request.body)
        directory = data.get('directory')
        
        if not directory:
            return JsonResponse({
                'status': 'error',
                'message': '请提供目录路径'
            })
        
        # 添加到监控目录集合
        directory = str(Path(directory).resolve())
        monitored_directories.add(directory)
        logger.info(f"开始监控目录: {directory}")
        
        return JsonResponse({
            'status': 'success',
            'message': f'开始监控目录: {directory}',
            'directory': directory
        })
        
    except Exception as e:
        logger.error(f"启动目录监控失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': str(e)
        })

@require_http_methods(["GET"])
def get_directory_status(request):
    """获取目录下的进程状态"""
    try:
        directory = request.GET.get('directory')
        if not directory:
            return JsonResponse({
                'status': 'error',
                'message': '未提供目录路径'
            })
            
        # 获取目录下的Python进程
        processes = get_python_processes(directory)
        
        # 获取每个进程的详细信息
        process_info = []
        for proc in processes:
            info = get_process_info(proc)
            if info:
                process_info.append(info)
        
        return JsonResponse({
            'status': 'success',
            'processes': process_info,
            'timestamp': timezone.now().strftime('%Y-%m-%d %H:%M:%S')
        })
        
    except Exception as e:
        logger.error(f"获取目录状态失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': str(e)
        })

@require_http_methods(["POST"])
def stop_directory_monitor(request):
    """停止目录监控"""
    try:
        data = json.loads(request.body)
        directory = data.get('directory')
        
        if not directory:
            return JsonResponse({
                'status': 'error',
                'message': '未提供目录路径'
            })

        # 从监控集合中移除
        directory = str(Path(directory).resolve())
        if directory in monitored_directories:
            monitored_directories.remove(directory)
            logger.info(f"停止监控目录: {directory}")
        
        return JsonResponse({
            'status': 'success',
            'message': '监控已停止'
        })
        
    except Exception as e:
        logger.error(f"停止监控失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': str(e)
        })

def setup_process_logger(pid, monitor_type):
    """为进程设置独立的日志记录器"""
    try:
        # 验证监控类型
        if monitor_type not in ['cpu', 'memory', 'gpu', 'all']:
            print(f"警告：无效的监控类型 {monitor_type}")
            return None

        # 获取当前时间（使用本地时区）
        local_tz = pytz.timezone('Asia/Shanghai')
        current_time = timezone.localtime(timezone.now(), local_tz)
        current_date = current_time.strftime("%Y%m%d")
        
        # 如果是从目录扫描启动的监控，使用 'all' 类型
        if monitor_type == 'scan':
            monitor_type = 'all'
        
        # 构建日志文件路径
        log_dir = os.path.join(LOG_DIR, monitor_type)
        log_file = os.path.join(log_dir, f'{pid}_{current_date}_{monitor_type}.log')
        
        # 确保目录存在
        os.makedirs(os.path.dirname(log_file), exist_ok=True)
        
        print(f"设置日志文件: {log_file}")  # 调试信息
        return log_file
        
    except Exception as e:
        print(f"设置日志文件失败: {str(e)}")
        raise

def log_process_metrics(pid, data, log_file):
    """记录进程指标到日志文件"""
    try:
        # 确保目录存在
        os.makedirs(os.path.dirname(log_file), exist_ok=True)
        
        # 获取当前时间（使用本地时区）
        local_tz = pytz.timezone('Asia/Shanghai')  # 使用中国时区
        current_time = timezone.localtime(timezone.now(), local_tz)
        timestamp = current_time.strftime('%Y-%m-%d %H:%M:%S')
        
        # 格式化日志内容
        log_content = f"=== {timestamp} ===\n"
        
        # CPU信息
        log_content += "CPU信息:\n"
        log_content += f"├─ 使用率: {data['cpu']['usage']}\n"
        log_content += f"├─ 用户态时间: {data['cpu']['user_time']}\n"
        log_content += f"├─ 内核态时间: {data['cpu']['system_time']}\n"
        log_content += f"├─ CPU核心数: {data['cpu']['cores']}\n"
        log_content += f"├─ CPU频率: {data['cpu']['frequency']}\n"
        log_content += f"└─ 上下文切换: {data['cpu']['context_switches']}\n"
        
        # 内存信息
        log_content += "内存信息:\n"
        log_content += f"├─ 物理内存: {data['memory']['physical']}\n"
        log_content += f"├─ 虚拟内存: {data['memory']['virtual']}\n"
        log_content += f"├─ 内存映射: {data['memory']['mappings']}\n"
        log_content += f"├─ 系统内存使用: {data['memory']['system_usage']}\n"
        log_content += f"└─ 交换空间使用: {data['memory']['swap_usage']}\n"
        
        # GPU信息
        log_content += "GPU信息:\n"
        log_content += f"├─ 使用率: {data['gpu']['usage']}\n"
        log_content += f"└─ 显存使用: {data['gpu']['memory']}\n"
        
        # IO信息
        log_content += "IO信息:\n"
        log_content += f"├─ 读取: {data['io']['read']}\n"
        log_content += f"├─ 写入: {data['io']['write']}\n"
        log_content += f"└─ 其他IO: {data['io']['other']}\n"
        
        # 进程状态
        log_content += f"进程状态: {data['status']}\n"
        log_content += "-" * 50 + "\n"
        
        # 写入日志文件
        with open(log_file, 'a', encoding='utf-8') as f:
            f.write(log_content)
            
        print(f"已写入日志到: {log_file}")  # 调试信息
        
    except Exception as e:
        print(f"写入日志失败: {str(e)}")
        raise

def get_process_by_name(process_name):
    """根据进程名称获取进程PID"""
    pids = []
    for proc in psutil.process_iter(['pid', 'name']):
        try:
            if process_name.lower() in proc.info['name'].lower():
                pids.append(proc.info['pid'])
        except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess):
            pass
    return pids

def get_process_gpu_usage(pid):
    """获取进程的GPU使用情况"""
    try:
        # 如果没有GPU或无法获取GPU信息，返回默认值
        return 0.0, 0.0
    except Exception as e:
        logger.error(f"获取GPU信息失败: {str(e)}")
        return 0.0, 0.0

def get_high_resource_processes():
    """获取高资源占用的进程"""
    high_resource_pids = []
    for proc in psutil.process_iter(['pid', 'name', 'cpu_percent', 'memory_percent']):
        try:
            if proc.info['cpu_percent'] > 50 or proc.info['memory_percent'] > 50:
                high_resource_pids.append({
                    'pid': proc.info['pid'],
                    'name': proc.info['name'],
                    'cpu_percent': proc.info['cpu_percent'],
                    'memory_percent': proc.info['memory_percent']
                })
        except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess):
            continue
    return high_resource_pids

def auto_detect_high_resource_processes(request):
    """自动检测高资源进程的API端点"""
    try:
        # 获取高资源进程
        high_resource_procs = get_high_resource_processes()
        
        # 启动监控
        for proc in high_resource_procs:
            try:
                process = psutil.Process(proc['pid'])
                # 设置日志文件
                log_file = setup_process_logger(proc['pid'], 'auto')
                # 记录进程数据
                data = get_process_data(process)
                log_process_metrics(proc['pid'], data, log_file)
            except psutil.NoSuchProcess:
                continue
            except Exception as e:
                logger.error(f"监控进程 {proc['pid']} 时出错: {str(e)}")
        
        return JsonResponse({
            'status': 'success',
            'message': '已开始自动检测高资源进程',
            'processes': high_resource_procs
        }, json_dumps_params={'ensure_ascii': False})
        
    except Exception as e:
        logger.error(f"自动检测失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': f'自动检测失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

def setup_logger(pid):
    """为每个进程设置独立的日志记录器"""
    log_file = os.path.join(os.path.dirname(os.path.dirname(__file__)), 'logs', 'process_monitor', f'process_{pid}_{datetime.now().strftime("%Y%m%d")}.log')
    process_logger = logging.getLogger(f'monitor.process.process_{pid}')
    process_logger.setLevel(logging.INFO)
    
    handler = logging.FileHandler(log_file)
    formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
    handler.setFormatter(formatter)
    process_logger.addHandler(handler)
    
    return process_logger, log_file

def continuous_monitor():
    """持续监控高资源进程的线程函数"""
    global is_monitoring
    logger = logging.getLogger('monitor')
    interval = 60  # 设置为60秒间隔
    
    while is_monitoring:
        try:
            next_update = timezone.now() + timezone.timedelta(seconds=interval)
            
            # 获取所有活跃的监控记录
            monitors = {
                'cpu': HighCPUProcess.objects.filter(is_active=True),
                'memory': HighMemoryProcess.objects.filter(is_active=True),
                'gpu': HighGPUProcess.objects.filter(is_active=True)
            }
            
            for monitor_type, processes in monitors.items():
                for proc in processes:
                    try:
                        process = psutil.Process(proc.pid)
                        data = get_process_data(process)
                        log_file = setup_process_logger(proc.pid, monitor_type)
                        log_process_metrics(proc.pid, data, log_file)
                        
                    except psutil.NoSuchProcess:
                        proc.is_active = False
                        proc.save()
                    except Exception as e:
                        logger.error(f"监控进程 {proc.pid} 时出错: {str(e)}")
            
            # 计算需要等待的时间
            now = timezone.now()
            if next_update > now:
                time.sleep((next_update - now).total_seconds())
            
        except Exception as e:
            logger.error(f"持续监控出错: {str(e)}")
            time.sleep(5)

def get_process_data(process):
    """获取进程的详细数据"""
    with process.oneshot():
        cpu_times = process.cpu_times()
        cpu_freq = psutil.cpu_freq() or psutil._common.scpufreq(current=0, min=0, max=0)
        cpu_ctx = process.num_ctx_switches()
        mem = process.memory_info()
        
        try:
            mem_maps = len(process.memory_maps())
        except (psutil.AccessDenied, psutil.TimeoutExpired):
            mem_maps = 0
            
        sys_mem = psutil.virtual_memory()
        swap = psutil.swap_memory()
        
        try:
            io = process.io_counters()
        except (psutil.AccessDenied, psutil.TimeoutExpired):
            io = psutil._common.pio(read_count=0, write_count=0, read_bytes=0, write_bytes=0,
                                  read_chars=0, write_chars=0, other_count=0, other_bytes=0)
        
        gpu_usage, gpu_memory = get_process_gpu_usage(process.pid)
        
        return {
            'timestamp': timezone.now().strftime('%Y-%m-%d %H:%M:%S'),
            'cpu': {
                'usage': f"{process.cpu_percent()}%",
                'user_time': f"{cpu_times.user:.1f}s",
                'system_time': f"{cpu_times.system:.1f}s",
                'cores': str(psutil.cpu_count()),
                'frequency': f"{getattr(cpu_freq, 'current', 0):.1f}MHz",
                'context_switches': f"{cpu_ctx.voluntary}/{cpu_ctx.involuntary}"
            },
            'memory': {
                'physical': f"{mem.rss/1024/1024:.1f}MB ({process.memory_percent():.1f}%)",
                'virtual': f"{mem.vms/1024/1024:.1f}MB",
                'mappings': f"{mem_maps}个",
                'system_usage': f"{sys_mem.percent:.1f}%",
                'swap_usage': f"{swap.percent:.1f}%"
            },
            'gpu': {
                'usage': f"{gpu_usage:.1f}%",
                'memory': f"{gpu_memory:.1f}MB"
            },
            'io': {
                'read': f"{getattr(io, 'read_bytes', 0)/1024/1024:.1f}MB ({getattr(io, 'read_count', 0)}次)",
                'write': f"{getattr(io, 'write_bytes', 0)/1024/1024:.1f}MB ({getattr(io, 'write_count', 0)}次)",
                'other': f"{getattr(io, 'other_count', 0)}次"
            },
            'status': process.status()
        }

@csrf_exempt
@require_http_methods(["GET", "POST"])
def start_monitor(request):
    """开始监控进程"""
    global monitor_thread, is_monitoring
    try:
        pid = request.GET.get('pid')
        monitor_type = request.GET.get('type')
        
        if not pid:
            return JsonResponse({
                'status': 'error',
                'message': '请输入进程ID'
            }, json_dumps_params={'ensure_ascii': False})
            
        pid = int(pid)
        
        try:
            process = psutil.Process(pid)
            process_name = process.name()
            
            # 启动监控线程
            if not is_monitoring:
                is_monitoring = True
                monitor_thread = threading.Thread(target=continuous_monitor)
                monitor_thread.daemon = True
                monitor_thread.start()
            
            return JsonResponse({
                'status': 'success',
                'message': f'开始监控进程 {pid} ({process_name})'
            }, json_dumps_params={'ensure_ascii': False})
            
        except psutil.NoSuchProcess:
            return JsonResponse({
                'status': 'error',
                'message': f'进程 {pid} 不存在'
            }, json_dumps_params={'ensure_ascii': False})
            
    except Exception as e:
        logger.error(f"启动监控失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': f'启动监控失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

@csrf_exempt
@require_http_methods(["GET", "POST"])
def stop_monitor(request):
    """停止监控进程"""
    global is_monitoring
    try:
        pid = request.GET.get('pid')
        
        if not pid:
            return JsonResponse({
                'status': 'error',
                'message': '请输入进程ID'
            }, json_dumps_params={'ensure_ascii': False})
            
        pid = int(pid)
        
        # 停止监控线程
        is_monitoring = False
        
        return JsonResponse({
            'status': 'success',
            'message': f'停止监控进程 {pid}'
        }, json_dumps_params={'ensure_ascii': False})
            
    except Exception as e:
        logger.error(f"停止监控失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': f'停止监控失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

@require_http_methods(["GET"])
def get_process_status(request, pid):
    """获取进程监控状态的API"""
    try:
        monitor_type = request.GET.get('type')
        logger.info(f"获取进程状态: pid={pid}, type={monitor_type}")
        
        # 先设置日志文件路径
        log_file = setup_process_logger(pid, monitor_type)
        if not log_file:
            raise ValueError(f"无法创建日志文件，监控类型: {monitor_type}")
        
        process = psutil.Process(pid)
        data = get_process_data(process)
        
        # 同步数据到数据库
        try:
            # 更新 all 资源记录
            AllResourceProcess.objects.update_or_create(
                pid=pid,
                defaults={
                    'process_name': process.name(),
                    'cpu_usage': float(data['cpu']['usage'].replace('%', '')),
                    'cpu_user_time': float(data['cpu']['user_time'].replace('s', '')),
                    'cpu_system_time': float(data['cpu']['system_time'].replace('s', '')),
                    'memory_usage': float(data['memory']['physical'].split('MB')[0].strip()),
                    'memory_percent': float(data['memory']['physical'].split('(')[1].split('%')[0].strip()),
                    'virtual_memory': float(data['memory']['virtual'].split('MB')[0].strip()),
                    'gpu_usage': float(data['gpu']['usage'].replace('%', '')),
                    'gpu_memory': float(data['gpu']['memory'].replace('MB', '')),
                    'net_io_sent': float(data['io']['write'].split('MB')[0].strip()),
                    'net_io_recv': float(data['io']['read'].split('MB')[0].strip()),
                    'is_active': True,
                    'status': 1,
                    'log_file': log_file
                }
            )

            # 根据监控类型选择对应的模型
            if monitor_type == 'cpu':
                # 从字符串中提取CPU使用率数值
                cpu_usage = float(data['cpu']['usage'].replace('%', ''))
                logger.info(f"CPU使用率: {cpu_usage}%")  # 调试日志
                
                process_obj, created = HighCPUProcess.objects.update_or_create(
                    pid=pid,
                    defaults={
                        'process_name': process.name(),
                        'cpu_usage': cpu_usage,
                        'is_active': True,
                        'status': 1,
                        'log_file': log_file
                    }
                )
                logger.info(f"{'创建' if created else '更新'}CPU进程记录: {process_obj}")
                
            elif monitor_type == 'memory':
                # 从字符串中提取内存使用量和百分比
                memory_info = data['memory']['physical']
                memory_usage = float(memory_info.split('MB')[0].strip())
                memory_percent = float(memory_info.split('(')[1].split('%')[0].strip())
                
                HighMemoryProcess.objects.update_or_create(
                    pid=pid,
                    defaults={
                        'process_name': process.name(),
                        'memory_usage': memory_usage,
                        'memory_percent': memory_percent,
                        'is_active': True,
                        'status': 1,
                        'log_file': log_file
                    }
                )
                
            elif monitor_type == 'gpu':
                # 从字符串中提取GPU使用率和显存
                gpu_usage = float(data['gpu']['usage'].replace('%', ''))
                gpu_memory = float(data['gpu']['memory'].replace('MB', ''))
                
                HighGPUProcess.objects.update_or_create(
                    pid=pid,
                    defaults={
                        'process_name': process.name(),
                        'gpu_usage': gpu_usage,
                        'gpu_memory': gpu_memory,
                        'is_active': True,
                        'status': 1,
                        'log_file': log_file
                    }
                )

            return JsonResponse({
                'status': 'success',
                'data': data
            })

        except psutil.NoSuchProcess:
            # 进程已终止
            monitor.is_active = False
            monitor.status = 0
            monitor.save()
            
            return JsonResponse({
                'status': 'error',
                'message': f'进程 {pid} 已终止'
            })

    except Exception as e:
        return JsonResponse({
            'status': 'error',
            'message': str(e)
        })

def update_process_status(pid, monitor_type, is_active=False, status=0):
    """更新进程状态"""
    try:
        if monitor_type == 'cpu':
            HighCPUProcess.objects.filter(pid=pid).update(
                is_active=is_active,
                status=status
            )
        elif monitor_type == 'memory':
            HighMemoryProcess.objects.filter(pid=pid).update(
                is_active=is_active,
                status=status
            )
        elif monitor_type == 'gpu':
            HighGPUProcess.objects.filter(pid=pid).update(
                is_active=is_active,
                status=status
            )
    except Exception as e:
        logger.error(f"更新进程状态失败: {str(e)}")

def index(request):
    """渲染主页"""
    return render(request, 'index.html')

@csrf_exempt
@require_http_methods(["POST"])
def stop_auto_detect(request):
    """停止自动检测的API端点"""
    try:
        return JsonResponse({
            'status': 'success',
            'message': '已停止自动检测'
        }, json_dumps_params={'ensure_ascii': False})
    except Exception as e:
        logger.error(f"停止自动检测失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': f'停止自动检测失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

@csrf_exempt
@require_http_methods(["GET"])
def get_latest_log(request, pid):
    """获取最新的监控日志"""
    try:
        monitor_type = request.GET.get('type')  # 获取监控类型（cpu/gpu/memory）
        if not monitor_type:
            return JsonResponse({
                'status': 'error',
                'message': '请指定监控类型'
            })

        # 根据类型获取对应的监控记录
        monitor = None
        if monitor_type == 'cpu':
            monitor = HighCPUProcess.objects.filter(pid=pid, is_active=True).first()
        elif monitor_type == 'gpu':
            monitor = HighGPUProcess.objects.filter(pid=pid, is_active=True).first()
        elif monitor_type == 'memory':
            monitor = HighMemoryProcess.objects.filter(pid=pid, is_active=True).first()

        if not monitor:
            return JsonResponse({
                'status': 'error',
                'message': f'未找到进程 {pid} 的{monitor_type}监控记录'
            })

        # 获取最新数据
        try:
            process = psutil.Process(pid)
            with process.oneshot():
                data = {
                    'pid': pid,
                    'name': process.name(),
                    'status': 1,  # 1表示进程运行中
                }
                
                # 根据监控类型添加相应的数据
                if monitor_type == 'cpu':
                    data['cpu_percent'] = process.cpu_percent()
                elif monitor_type == 'memory':
                    memory_info = process.memory_info()
                    data['memory_gb'] = memory_info.rss / (1024 * 1024 * 1024)
                    data['memory_percent'] = process.memory_percent()
                elif monitor_type == 'gpu':
                    gpu_usage, gpu_memory = get_process_gpu_usage(pid)
                    data['gpu_usage'] = gpu_usage
                    data['gpu_memory'] = gpu_memory

            return JsonResponse({
                'status': 'success',
                'data': data
            })

        except psutil.NoSuchProcess:
            # 进程已终止
            monitor.is_active = False
            monitor.status = 0
            monitor.save()
            
            return JsonResponse({
                'status': 'error',
                'message': f'进程 {pid} 已终止'
            })

    except Exception as e:
        return JsonResponse({
            'status': 'error',
            'message': str(e)
        })

@csrf_exempt
@require_http_methods(["GET"])
def get_process_list(request):
    """获取当前监控的进程列表"""
    try:
        processes = []
        
        # 获取所有活跃的监控进程
        cpu_processes = HighCPUProcess.objects.filter(is_active=True)
        gpu_processes = HighGPUProcess.objects.filter(is_active=True)
        memory_processes = HighMemoryProcess.objects.filter(is_active=True)
        
        # 创建进程信息字典
        process_dict = {}
        
        # 处理 CPU 进程
        for proc in cpu_processes:
            if proc.pid not in process_dict:
                process_dict[proc.pid] = {
                    'pid': proc.pid,
                    'name': proc.process_name,
                    'cpu_percent': proc.cpu_usage,
                    'memory_gb': 0,
                    'memory_percent': 0,
                    'gpu_usage': 0,
                    'gpu_memory': 0,
                    'resource_types': ['cpu']
                }
            else:
                process_dict[proc.pid]['cpu_percent'] = proc.cpu_usage
                process_dict[proc.pid]['resource_types'].append('cpu')
        
        # 处理 GPU 进程
        for proc in gpu_processes:
            if proc.pid not in process_dict:
                process_dict[proc.pid] = {
                    'pid': proc.pid,
                    'name': proc.process_name,
                    'cpu_percent': 0,
                    'memory_gb': 0,
                    'memory_percent': 0,
                    'gpu_usage': proc.gpu_usage,
                    'gpu_memory': proc.gpu_memory,
                    'resource_types': ['gpu']
                }
            else:
                process_dict[proc.pid]['gpu_usage'] = proc.gpu_usage
                process_dict[proc.pid]['gpu_memory'] = proc.gpu_memory
                process_dict[proc.pid]['resource_types'].append('gpu')
        
        # 处理内存进程
        for proc in memory_processes:
            if proc.pid not in process_dict:
                process_dict[proc.pid] = {
                    'pid': proc.pid,
                    'name': proc.process_name,
                    'cpu_percent': 0,
                    'memory_gb': proc.memory_usage,
                    'memory_percent': proc.memory_percent,
                    'gpu_usage': 0,
                    'gpu_memory': 0,
                    'resource_types': ['memory']
                }
            else:
                process_dict[proc.pid]['memory_gb'] = proc.memory_usage
                process_dict[proc.pid]['memory_percent'] = proc.memory_percent
                process_dict[proc.pid]['resource_types'].append('memory')
        
        # 转换字典为列表
        processes = list(process_dict.values())
        
        # 按总资源占用率排序
        processes.sort(key=lambda x: (
            x['cpu_percent'] / 100 + 
            x['memory_percent'] / 100 + 
            x['gpu_usage'] / 100
        ), reverse=True)
        
        return JsonResponse({
            'status': 'success',
            'processes': processes
        }, json_dumps_params={'ensure_ascii': False})
        
    except Exception as e:
        return JsonResponse({
            'status': 'error',
            'message': str(e)
        }, json_dumps_params={'ensure_ascii': False})

def high_resource_list(request):
    """高资源进程列表视图"""
    context = {
        'cpu_processes': HighCPUProcess.objects.all().order_by('-updated_at'),
        'memory_processes': HighMemoryProcess.objects.all().order_by('-updated_at'),
        'gpu_processes': HighGPUProcess.objects.all().order_by('-updated_at'),
    }
    return render(request, 'high_resource_list.html', context)

def find_python_processes_in_dir(directory):
    """查找指定目录下运行的 Python 进程"""
    python_processes = []
    directory = str(Path(directory).resolve())  # 转换为绝对路径，并处理跨平台差异
    
    for proc in psutil.process_iter(['pid', 'name', 'cmdline', 'cwd']):
        try:
            # 检查是否是 Python 进程
            if proc.info['name'].lower().startswith('python'):
                # 检查进程的工作目录
                proc_cwd = str(Path(proc.info['cwd']).resolve())
                if proc_cwd.startswith(directory):
                    # 检查命令行参数
                    cmdline = proc.info['cmdline']
                    if cmdline:
                        python_processes.append({
                            'pid': proc.info['pid'],
                            'name': proc.info['name'],
                            'cmdline': ' '.join(cmdline),
                            'cwd': proc_cwd
                        })
        except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess):
            pass
    
    return python_processes

def get_gpu_info(pid):
    """获取进程的GPU使用信息"""
    try:
        import pynvml
        pynvml.nvmlInit()
        gpu_info = {
            'usage': 0,
            'memory': 0,
            'device_count': pynvml.nvmlDeviceGetCount()
        }
        
        for i in range(gpu_info['device_count']):
            handle = pynvml.nvmlDeviceGetHandleByIndex(i)
            procs = pynvml.nvmlDeviceGetComputeRunningProcesses(handle)
            for proc in procs:
                if proc.pid == pid:
                    gpu_info['memory'] = proc.usedGpuMemory / 1024 / 1024  # 转换为MB
                    gpu_info['usage'] = pynvml.nvmlDeviceGetUtilizationRates(handle).gpu
                    break
        return gpu_info
    except Exception as e:
        logger.error(f"获取GPU信息失败: {str(e)}")
        return {'usage': 0, 'memory': 0, 'device_count': 0}

def get_io_counters(proc):
    """获取进程的IO计数器信息"""
    try:
        io = proc.io_counters()
        return {
            'read_bytes': io.read_bytes / 1024 / 1024,  # 转换为MB
            'write_bytes': io.write_bytes / 1024 / 1024,
            'read_count': io.read_count,
            'write_count': io.write_count
        }
    except:
        return {'read_bytes': 0, 'write_bytes': 0, 'read_count': 0, 'write_count': 0}

def get_network_connections(proc):
    """获取进程的网络连接信息"""
    try:
        connections = []
        for conn in proc.connections():
            connections.append({
                'local_address': f"{conn.laddr.ip}:{conn.laddr.port}" if conn.laddr else "",
                'remote_address': f"{conn.raddr.ip}:{conn.raddr.port}" if conn.raddr else "",
                'status': conn.status
            })
        return connections
    except:
        return []

def get_open_files(proc):
    """获取进程打开的文件列表"""
    try:
        return [f.path for f in proc.open_files()]
    except:
        return []

@csrf_exempt
@require_http_methods(["POST"])
def fetch_tiktok_videos(request):
    """获取TikTok用户播放量前10的视频"""
    try:
        # 添加全局变量引用
        global all_downloaded_videos
        
        # 如果变量未初始化，则初始化为空列表
        if 'all_downloaded_videos' not in globals():
            all_downloaded_videos = []
            
        data = json.loads(request.body)
        unique_id = data.get('unique_id')
        
        if not unique_id:
            return JsonResponse({
                'status': 'error',
                'message': '请提供TikTok用户ID(unique_id)'
            }, json_dumps_params={'ensure_ascii': False})
        
        # 调用API获取用户资料和secUid
        logger.info(f"正在获取用户 {unique_id} 的资料...")
        user_profile = fetch_user_profile(unique_id)
        
        if not user_profile or 'data' not in user_profile:
            return JsonResponse({
                'status': 'error',
                'message': f'无法获取用户 {unique_id} 的资料'
            }, json_dumps_params={'ensure_ascii': False})
        
        # 从API响应中提取secUid和其他用户信息
        try:
            user_info = user_profile['data']['userInfo']['user']
            sec_uid = user_info['secUid']
            
            # 提取其他用户信息
            nickname = user_info.get('nickname', f'用户_{unique_id}')
            signature = user_info.get('signature', '')
            avatar_url = user_info.get('avatarLarger', '')
            user_stats = user_profile['data']['userInfo']['stats']
            follower_count = user_stats.get('followerCount', 0)
            heart_count = user_stats.get('heartCount', 0)
            video_count = user_stats.get('videoCount', 0)
            
            logger.info(f"成功获取用户secUid: {sec_uid}, 该用户有 {video_count} 个视频")
        except (KeyError, TypeError) as e:
            logger.error(f"解析用户资料出错: {e}")
            return JsonResponse({
                'status': 'error',
                'message': f'解析用户资料出错: {str(e)}'
            }, json_dumps_params={'ensure_ascii': False})
        
        # 确保用户目录存在
        user_dir = os.path.join(TIKTOK_VIDEOS_PATH, unique_id)
        os.makedirs(user_dir, exist_ok=True)
        
        # 使用辅助函数获取播放量前10的视频
        logger.info(f"开始获取用户 {nickname} 的全部视频并查找播放量前10...")
        top_videos = get_top_n_videos_by_play_count(sec_uid, n=10)
        
        # 下载这些视频
        downloaded_videos = []
        for i, (play_count, video_id, desc) in enumerate(top_videos, 1):
            try:
                save_path = os.path.join(user_dir, f"{video_id}.mp4")
                
                logger.info(f"下载第 {i}/{len(top_videos)} 个视频 (ID: {video_id})，播放量: {play_count}")
                
                if download_video(video_id, unique_id, save_path):
                    video_info = {
                        'id': video_id,
                        'desc': desc,
                        'play_count': play_count,
                        'user_unique_id': unique_id
                    }
                    downloaded_videos.append(video_info)
                    logger.info(f"视频 {video_id} 下载成功")
                else:
                    logger.error(f"视频 {video_id} 下载失败")
                    
                # 避免过快请求
                time.sleep(2)
                
            except Exception as e:
                logger.error(f"下载视频时出错: {e}")
                continue
        
        all_downloaded_videos.extend(downloaded_videos)
        
        # 保存用户信息和视频信息到数据库
        video_info_json = json.dumps([{
            'id': v['id'],
            'desc': v['desc'],
            'play_count': v['play_count']
        } for v in downloaded_videos], ensure_ascii=False)
        
        user_record = TiktokUserVideos.objects.update_or_create(
            sec_user_id=sec_uid,
            defaults={
                'nickname': nickname,
                'signature': signature,
                'follower_count': follower_count,
                'total_favorited': heart_count,
                'avatar_url': avatar_url,
                'videos_folder': user_dir,
                'video_paths': video_info_json,
                'video_count': video_count
            }
        )
        
        return JsonResponse({
            'status': 'success',
            'message': '处理完成',
            'user_info': {
                'nickname': nickname,
                'unique_id': unique_id,
                'sec_uid': sec_uid,
                'avatar': avatar_url,
                'follower_count': follower_count,
                'total_favorited': heart_count,
                'signature': signature,
                'video_count': video_count
            },
            'total_videos_count': video_count,
            'processed_videos_count': len(top_videos),
            'downloaded_videos': len(downloaded_videos),
            'videos': [{'id': v['id'], 'desc': v['desc'][:50], 'play_count': v['play_count']} for v in downloaded_videos],
            'video_directory': user_dir  # 添加视频目录路径方便查找
        }, json_dumps_params={'ensure_ascii': False})
        
    except Exception as e:
        logger.error(f"处理TikTok视频失败: {e}")
        import traceback
        logger.error(f"详细错误: {traceback.format_exc()}")
        return JsonResponse({
            'status': 'error',
            'message': f'处理TikTok视频失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

@require_http_methods(["GET"])
def get_tiktok_user_videos(request):
    """获取已下载的TikTok用户视频列表"""
    try:
        sec_user_id = request.GET.get('sec_user_id')
        
        if not sec_user_id:
            # 如果没有指定用户ID，返回所有用户列表
            users = TiktokUserVideos.objects.all().values('sec_user_id', 'nickname', 'follower_count', 'videos_folder', 'create_time')
            return JsonResponse({
                'status': 'success',
                'users': list(users)
            }, json_dumps_params={'ensure_ascii': False})
        
        # 查询指定用户信息
        try:
            user = TiktokUserVideos.objects.get(sec_user_id=sec_user_id)
            # 解析视频信息JSON
            video_info = json.loads(user.video_paths) if user.video_paths else []
            
            # 获取文件夹中的文件列表
            videos_folder = user.videos_folder
            video_files = []
            if os.path.exists(videos_folder):
                video_files = [f for f in os.listdir(videos_folder) if os.path.isfile(os.path.join(videos_folder, f))]
            
        except TiktokUserVideos.DoesNotExist:
            return JsonResponse({
                'status': 'error',
                'message': f'用户 {sec_user_id} 不存在'
            }, json_dumps_params={'ensure_ascii': False})
        
        return JsonResponse({
            'status': 'success',
            'user_info': {
                'sec_user_id': user.sec_user_id,
                'nickname': user.nickname,
                'signature': user.signature,
                'follower_count': user.follower_count,
                'total_favorited': user.total_favorited,
                'avatar_url': user.avatar_url,
                'create_time': user.create_time.strftime('%Y-%m-%d %H:%M:%S'),
                'update_time': user.update_time.strftime('%Y-%m-%d %H:%M:%S')
            },
            'videos_folder': videos_folder,
            'video_files': video_files,
            'video_info': video_info
        }, json_dumps_params={'ensure_ascii': False})
        
    except Exception as e:
        logger.error(f"获取TikTok视频列表失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': f'获取TikTok视频列表失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

# 辅助函数

def fetch_user_videos(sec_uid, cursor=0, count=10):
    """获取用户视频列表"""
    url = f"{API_BASE_URL}/api/tiktok/web/fetch_user_post?secUid={sec_uid}&cursor={cursor}&count={count}"
    
    try:
        response = requests.get(url, timeout=30)
        
        if response.status_code == 200:
            data = response.json()
            logger.info(f"成功获取用户视频，共 {len(data['data'].get('itemList', []))} 个视频")
            return data
        else:
            logger.error(f"获取用户视频失败: {response.status_code}")
            return None
    except Exception as e:
        logger.error(f"获取用户视频异常: {e}")
        return None

def fetch_user_profile(unique_id):
    """获取用户基本信息"""
    url = f"{API_BASE_URL}/api/tiktok/web/fetch_user_profile?uniqueId={unique_id}"
    
    try:
        logger.info(f"正在请求用户资料: {url}")
        response = requests.get(url, timeout=30)
        
        if response.status_code == 200:
            data = response.json()
            logger.info(f"成功获取用户资料: {unique_id}")
            
            # 打印完整响应以便调试
            logger.info(f"API原始响应: {data}")
            
            # 验证数据完整性
            if 'data' not in data or not data['data']:
                logger.error(f"API响应缺少data字段: {data}")
                return None
                
            if 'userInfo' not in data['data'] or not data['data']['userInfo']:
                logger.error(f"API响应缺少userInfo字段: {data['data']}")
                return None
            
            if 'user' not in data['data']['userInfo'] or not data['data']['userInfo']['user']:
                logger.error(f"API响应缺少user字段: {data['data']['userInfo']}")
                return None
            
            # 打印用户信息
            logger.info(f"用户信息: {data['data']['userInfo']['user']}")
            
            return data
        else:
            logger.error(f"获取用户信息失败: HTTP {response.status_code}, 响应: {response.text[:500]}")
            return None
    except Exception as e:
        logger.error(f"获取用户信息异常: {e}")
        return None

def download_video(video_id, unique_id, save_path):
    """使用API的直接下载接口下载TikTok视频"""
    # 确保视频ID是纯数字
    if not str(video_id).isdigit():
        logger.error(f"无效的视频ID: {video_id}，必须是纯数字")
        return False
    
    # 构建标准TikTok视频URL
    tiktok_url = f"https://www.tiktok.com/@{unique_id}/video/{video_id}"
    logger.info(f"构建的TikTok URL: {tiktok_url}")
    
    # 构建完整的API请求URL
    api_url = f"http://81.69.223.133:45268/api/download"
    full_url = f"{api_url}?url={tiktok_url}&prefix=true&with_watermark=false"
    logger.info(f"完整的API请求URL: {full_url}")
    
    try:
        # 直接使用完整URL发送请求
        response = requests.get(full_url, stream=True, timeout=60)
        
        # 检查响应状态
        if response.status_code != 200:
            logger.error(f"下载视频失败: {response.status_code} - {response.text[:200] if response.text else '无响应内容'}")
            return False
        
        # 获取内容类型
        content_type = response.headers.get('Content-Type', '')
        logger.info(f"响应内容类型: {content_type}")
        
        # 保存文件
        with open(save_path, 'wb') as f:
            for chunk in response.iter_content(chunk_size=8192):
                if chunk:
                    f.write(chunk)
        
        file_size = os.path.getsize(save_path)
        logger.info(f"视频已下载到: {save_path}，文件大小: {file_size}字节")
        
        return True
    
    except Exception as e:
        logger.error(f"下载视频异常: {e}")
        import traceback
        logger.error(f"详细错误: {traceback.format_exc()}")
        return False

def fetch_user_followings(sec_uid, max_cursor=0, min_cursor=0, page_size=30):
    """
    获取用户的关注列表
    
    Args:
        sec_uid: 用户的安全ID
        max_cursor: 保持为0
        min_cursor: 分页游标，从上一次响应获取
        page_size: 每页大小，默认30条记录
    
    Returns:
        用户关注列表数据
    """
    url = f"{API_BASE_URL}/api/tiktok/web/fetch_user_follow?secUid={sec_uid}&count={page_size}&maxCursor={max_cursor}&minCursor={min_cursor}"
    
    logger.info(f"请求关注列表URL: {url}")
    
    try:
        response = requests.get(url, timeout=30)
        
        if response.status_code == 200:
            data = response.json()
            logger.info(f"成功获取用户关注列表，共 {len(data['data'].get('userList', []))} 个用户, minCursor={data['data'].get('minCursor')}")
            return data
        else:
            logger.error(f"获取用户关注列表失败: {response.status_code}")
            return None
    except Exception as e:
        logger.error(f"获取用户关注列表异常: {e}")
        return None

def filter_users_by_followers(user_list, min_followers=5000, max_followers=50000):
    """筛选粉丝数在指定范围内的用户"""
    filtered_users = []
    
    for user_data in user_list:
        try:
            follower_count = user_data.get('stats', {}).get('followerCount', 0)
            if min_followers <= follower_count <= max_followers:
                filtered_users.append(user_data)
        except Exception as e:
            logger.error(f"筛选用户时出错: {e}")
    
    return filtered_users

def get_top_n_videos_by_play_count(sec_uid, n=10):
    """
    获取用户播放量前N的视频
    
    Args:
        sec_uid: 用户的安全ID
        n: 需要获取的前n个视频，默认为10
        
    Returns:
        按播放量降序排列的前n个视频列表，格式为字典
    """
    import heapq
    top_videos_heap = []  # 小顶堆，元组格式: (播放量, 视频ID, 描述)
    
    # 分页获取所有视频
    cursor = 0
    has_more = True
    page = 1
    total_videos = 0
    
    try:
        while has_more:
            logger.info(f"获取第{page}页视频，游标: {cursor}")
            videos_data = fetch_user_videos(sec_uid, cursor=cursor)
            
            if not videos_data or 'data' not in videos_data:
                logger.error("获取视频失败，中止获取")
                break
                
            videos = videos_data['data'].get('itemList', [])
            if not videos:
                logger.info("当前页没有视频，结束获取")
                break
                
            # 处理当前页的每个视频
            for video in videos:
                try:
                    video_id = video.get('id', '')
                    if not video_id:
                        continue
                        
                    play_count = int(video.get('stats', {}).get('playCount', 0))
                    desc = video.get('desc', '')
                    
                    # 维护前n个最高播放量的视频
                    if len(top_videos_heap) < n:
                        # 堆还未满，直接添加
                        heapq.heappush(top_videos_heap, (play_count, video_id, desc))
                    elif play_count > top_videos_heap[0][0]:
                        # 当前视频播放量比堆中最小的高，替换
                        heapq.heappushpop(top_videos_heap, (play_count, video_id, desc))
                except Exception as e:
                    logger.error(f"处理视频信息出错: {e}")
            
            total_videos += len(videos)
            logger.info(f"已处理 {total_videos} 个视频，当前保存了 {len(top_videos_heap)} 个候选视频")
            
            # 检查是否有更多页
            has_more = videos_data['data'].get('hasMore', False)
            if has_more:
                cursor = videos_data['data'].get('cursor', 0)
            
            page += 1
            time.sleep(1)
        
        # 将堆转换为字典列表而不是元组列表，并按播放量降序排序
        top_videos_list = []
        # 从堆中转换为临时列表并排序
        temp_list = [(play_count, video_id, desc) for play_count, video_id, desc in top_videos_heap]
        temp_list.sort(reverse=True)  # 从高到低排序
        
        # 将元组转换为字典
        for play_count, video_id, desc in temp_list:
            top_videos_list.append({
                'id': video_id,
                'desc': desc,
                'play_count': play_count
            })
        
        logger.info(f"从 {total_videos} 个视频中找到播放量最高的 {len(top_videos_list)} 个")
        return top_videos_list
        
    except Exception as e:
        logger.error(f"获取热门视频时发生错误: {str(e)}")
        import traceback
        logger.error(traceback.format_exc())
        return []


# 辅助函数，用于操作所有任务
def list_all_tasks():
    """获取所有任务列表"""
    tasks = []
    for key in redis_client.keys("task_status:*"):
        task_id = key.decode().split(":", 1)[1]
        task_data = get_task_status(task_id)
        if task_data:
            task_data['task_id'] = task_id
            tasks.append(task_data)
    return tasks

@shared_task
def async_fetch_videos_task(task_id, start_unique_id, max_depth=3, target_users=None, skip_user_profile=False, start_sec_uid=None):
    """异步执行视频获取任务"""
    try:
        # 更新任务状态为处理中
        update_task_status(task_id, {
            'status': 'processing',
            'progress': 0
        })
        
        # 创建视频获取器实例
        fetcher = TiktokVideoFetcher(
            start_unique_id=start_unique_id,
            max_depth=max_depth,
            target_users=target_users,
            skip_user_profile=skip_user_profile,  # 传递测试模式
            start_sec_uid=start_sec_uid           # 传递临时secUid
        )
        
        # 添加进度回调
        fetcher.progress_callback = lambda progress, message: update_task_progress(task_id, progress, message)
        
        # 执行处理
        if fetcher.initialize() and fetcher.process():
            # 处理成功，保存结果
            result = fetcher.get_result()
            update_task_status(task_id, {
                'status': 'completed',
                'result': result,
                'progress': 100
            })
            return True
        else:
            # 处理失败
            update_task_status(task_id, {
                'status': 'failed',
                'error': fetcher.error_message
            })
            return False
    except Exception as e:
        # 处理异常
        logger.error(f"异步任务执行失败: {str(e)}")
        import traceback
        logger.error(f"详细错误信息: {traceback.format_exc()}")
        
        update_task_status(task_id, {
            'status': 'failed',
            'error': str(e)
        })
        return False

def update_task_progress(task_id, progress, message=None):
    """更新任务进度"""
    updates = {'progress': progress}
    if message:
        updates['message'] = message
    update_task_status(task_id, updates)
            
class TiktokVideoFetcher:
    """抖音视频获取器，支持递归获取用户关注的视频"""
    
    def __init__(self, start_unique_id=None, start_sec_uid=None, 
                mode="by_users", target_users=None, max_depth=1, 
                skip_user_profile=False, max_videos_per_user=10):
        """
        初始化抖音视频获取器
        :param start_unique_id: 起始用户的uniqueId
        :param start_sec_uid: 起始用户的secUid
        :param mode: 模式，'by_users'(按用户数)或'by_depth'(按深度)
        :param target_users: 目标用户数量，仅在by_users模式下有效
        :param max_depth: 最大层级深度，仅在by_depth模式下有效
        :param skip_user_profile: 是否跳过获取用户资料
        :param max_videos_per_user: 每个用户最多获取的视频数量
        """
        # 统一参数命名：确保使用 start_sec_uid
        self.start_unique_id = start_unique_id
        self.start_sec_uid = start_sec_uid  # 注意这里保持为start_sec_uid
        self.mode = mode
        self.target_users = target_users
        self.max_depth = max_depth
        self.skip_user_profile = skip_user_profile
        self.max_videos_per_user = max_videos_per_user or 10
        
        # 状态变量
        self.status = "created"  # 状态: created, initializing, ready, processing, completed, failed
        self.user_count = 0      # 已处理用户数量
        self.video_count = 0     # 已下载视频数量
        self.progress = 0        # 进度百分比
        self.progress_message = "" # 进度消息
        self.error_message = ""  # 错误消息
        
        # 队列和集合
        self.user_queue = deque()  # 待处理用户队列，元素为 (sec_uid, unique_id, depth)
        self.processed_users = set()  # 已处理的用户集合
        
        # 创建目录
        os.makedirs(TIKTOK_VIDEOS_PATH, exist_ok=True)
        
        logger.info(f"初始化TiktokVideoFetcher: mode={mode}, max_depth={max_depth}, target_users={target_users}")
        
    def initialize(self):
        """初始化处理，获取起始用户信息"""
        try:
            self.status = "initializing"
            logger.info(f"开始初始化，起始用户: {self.start_unique_id or '使用secUid'}")
            
            # 如果直接提供secUid，则直接使用
            if self.start_sec_uid:
                logger.info(f"直接使用提供的secUid: {self.start_sec_uid}")
                
                # 如果未提供unique_id，使用secUid的一部分作为替代
                display_id = self.start_unique_id or f"user_{self.start_sec_uid[:8]}"
                
                # 简化队列元素：只保留sec_uid、unique_id和深度
                self.user_queue.append((self.start_sec_uid, display_id, 0))
                self.status = "ready"
                return True
            
            # 如果只提供了uniqueId，需要获取secUid
            elif self.start_unique_id:
                logger.info(f"通过uniqueId获取用户secUid: {self.start_unique_id}")
                user_profile = fetch_user_profile(self.start_unique_id)
                
                # 检查错误
                if isinstance(user_profile, dict) and 'error' in user_profile:
                    error_message = user_profile['error']
                    self.error_message = f'获取用户资料出错: {error_message}'
                    self.status = "failed"
                    return False
                
                if not user_profile or 'data' not in user_profile or not user_profile['data']:
                    self.error_message = f'无法获取用户资料或用户不存在: {self.start_unique_id}'
                    self.status = "failed"
                    return False
                    
                try:
                    user_data = user_profile['data']
                    sec_uid = user_data.get('secUid', '')
                    if not sec_uid:
                        self.error_message = f'无法获取用户secUid: {self.start_unique_id}'
                        self.status = "failed"
                        return False
                    
                    # 添加到队列中，深度为0
                    self.user_queue.append((sec_uid, self.start_unique_id, 0))
                    
                    # 创建或更新用户数据库记录
                    try:
                        TiktokUserVideos.objects.update_or_create(
                            sec_user_id=sec_uid,
                            defaults={
                                'unique_id': self.start_unique_id,
                                'nickname': user_data.get('nickname', ''),
                                'follower_count': user_data.get('followerCount', 0),
                                'following_count': user_data.get('followingCount', 0),
                                'video_count': user_data.get('videoCount', 0),
                                'videos_folder': os.path.join('videos', self.start_unique_id)
                            }
                        )
                    except Exception as e:
                        logger.warning(f"保存用户数据到数据库失败，但不影响继续处理: {e}")
                    
                    self.status = "ready"
                    return True
                except KeyError:
                    self.error_message = f'用户资料结构不完整，无法提取secUid'
                    self.status = "failed"
                    return False
            
            # 两者都没提供
            else:
                self.error_message = "未提供secUid或uniqueId，无法初始化"
                self.status = "failed"
                return False
                
        except Exception as e:
            logger.error(f"初始化失败: {e}")
            import traceback
            logger.error(f"详细错误信息: {traceback.format_exc()}")
            self.error_message = f"初始化失败: {str(e)}"
            self.status = "failed"
            return False
            
    def process(self):
        """执行主处理逻辑"""
        if self.status != "ready":
            if not self.initialize():
                return False
        
        self.status = "processing"
        self._report_progress(5, "初始化完成，开始处理")
        
        try:
            # 预先估算总任务量
            total_users = self.target_users if self.mode == "by_users" and self.target_users else 50
            
            # 主处理循环
            while self.user_queue:
                # 按人数抓取模式下，达到目标人数则停止
                if self.mode == "by_users" and self.target_users is not None and self.user_count >= self.target_users:
                    logger.info(f"已达到目标用户数 {self.target_users}，停止处理")
                    break
                    
                # 队列中只有sec_uid、unique_id和depth
                sec_uid, unique_id, depth = self.user_queue.popleft()
                
                # 如果超过最大深度且是按层级模式，则跳过此用户
                if self.mode == "by_depth" and depth > self.max_depth:
                    continue
                    
                # 如果用户已处理，跳过
                if sec_uid in self.processed_users:
                    continue
                    
                # 处理单个用户
                self._process_single_user(sec_uid, unique_id, depth)
                
                # 报告进度
                progress = min(95, int(self.user_count / total_users * 90) + 5)
                self._report_progress(progress, f"已处理 {self.user_count} 个用户，已下载 {self.video_count} 个视频")
            
            self.status = "completed"
            self._report_progress(100, f"处理完成，共处理 {self.user_count} 个用户，下载 {self.video_count} 个视频")
            return True
            
        except Exception as e:
            logger.error(f"处理过程中出错: {e}")
            import traceback
            logger.error(f"详细错误信息: {traceback.format_exc()}")
            self.error_message = f"处理过程中出错: {str(e)}"
            self.status = "failed"
            self._report_progress(0, f"处理失败: {str(e)}")
            return False
            
    def _process_single_user(self, sec_uid, unique_id, depth):
        """处理单个用户的视频和关注列表 - 简化版"""
        # 标记为已处理
        self.processed_users.add(sec_uid)
        self.user_count += 1
        
        logger.info(f"开始处理用户 {unique_id}，深度: {depth}")
        
        try:
            # 创建基本用户记录（如果不存在）
            try:
                TiktokUserVideos.objects.get_or_create(
                    sec_user_id=sec_uid,
                    defaults={
                        'unique_id': unique_id,
                        'videos_folder': os.path.join('videos', unique_id)
                    }
                )
            except Exception as e:
                logger.error(f"创建基本用户记录失败: {e}")
            
            # 获取并下载视频
            downloaded_videos = self._fetch_user_videos(sec_uid, unique_id, depth)
            
            # 处理用户的关注列表
            if self.mode == "by_depth" and depth < self.max_depth:
                next_depth = depth + 1
                self._process_user_followings(sec_uid, next_depth)
            elif self.mode == "by_users" and self.user_count < self.target_users:
                next_depth = depth + 1
                self._process_user_followings(sec_uid, next_depth)
            
            # 报告进度
            self._report_progress(
                min(95, int(self.user_count / (self.target_users or 50) * 90) + 5),
                f"已处理 {self.user_count} 个用户，已下载 {self.video_count} 个视频"
            )
            
        except Exception as e:
            logger.error(f"处理用户 {unique_id} 时出错: {e}")
            import traceback
            logger.error(traceback.format_exc())
            
    def _fetch_user_videos(self, sec_uid, unique_id, depth):
        """获取并下载用户视频，优先处理字典格式数据"""
        # 导入traceback
        import traceback
        
        downloaded_videos = []
        
        # 使用unique_id创建视频文件夹
        videos_folder = os.path.join(TIKTOK_VIDEOS_PATH, unique_id)
        os.makedirs(videos_folder, exist_ok=True)
        
        logger.info(f"开始处理用户 {unique_id} 的视频")
        
        try:
            # 获取视频列表 - 现在统一返回字典列表
            logger.info(f"调用 get_top_n_videos_by_play_count({sec_uid}, n={self.max_videos_per_user})")
            top_videos = get_top_n_videos_by_play_count(sec_uid, n=self.max_videos_per_user)
            
            # 记录返回值类型
            logger.info(f"获取到视频列表: 类型={type(top_videos).__name__}, 数量={len(top_videos)}")
            
            # 如果没有获取到视频，仅更新文件夹路径
            if not top_videos:
                logger.warning(f"未能获取到用户 {unique_id} 的任何视频")
                try:
                    TiktokUserVideos.objects.filter(sec_user_id=sec_uid).update(
                        videos_folder=videos_folder
                    )
                except Exception as e:
                    logger.error(f"更新用户视频文件夹失败: {e}")
                    logger.error(traceback.format_exc())
                return []
            
            # 处理每个视频 - 显示进度
            total_videos = len(top_videos)
            logger.info(f"开始处理 {total_videos} 个视频")
            
            for i, video_data in enumerate(top_videos):
                current_num = i + 1
                progress_str = f"({total_videos}/{current_num})"  # 进度显示格式：(总数/当前)
                logger.info(f"{progress_str} 开始处理第 {current_num}/{total_videos} 个视频")
                
                try:
                    # 视频信息提取 - 优先按字典处理，确保兼容性
                    if isinstance(video_data, dict):
                        video_id = str(video_data.get('id', ''))
                        play_count = video_data.get('play_count', 0)
                        desc = video_data.get('desc', '')
                        logger.info(f"{progress_str} 字典数据: ID={video_id}, 播放={play_count}")
                    else:
                        # 如果不是字典，尝试按元组处理（向后兼容）
                        logger.warning(f"{progress_str} 收到非字典数据: {type(video_data).__name__}")
                        if isinstance(video_data, tuple) and len(video_data) >= 2:
                            play_count, video_id, *rest = video_data
                            desc = rest[0] if rest else ""
                            video_id = str(video_id)
                            logger.info(f"{progress_str} 元组数据: ID={video_id}, 播放={play_count}")
                        else:
                            logger.error(f"{progress_str} 无法解析数据: {video_data}")
                            continue
                    
                    # 视频ID必须存在
                    if not video_id:
                        logger.warning(f"{progress_str} 视频ID为空，跳过")
                        continue
                    
                    # 视频文件名
                    video_filename = f"{video_id}.mp4"
                    video_path = os.path.join(videos_folder, video_filename)
                    
                    # 如果文件已存在且大小大于0，则跳过下载
                    if os.path.exists(video_path) and os.path.getsize(video_path) > 0:
                        logger.info(f"{progress_str} 视频已存在: {video_id}")
                        
                        # 创建字典并添加到列表 - 统一使用字典格式
                        video_dict = {
                            'id': video_id,
                            'desc': desc,
                            'play_count': play_count
                        }
                        downloaded_videos.append(video_dict)
                        continue
                    
                    # 下载视频 - 显示下载进度
                    logger.info(f"{progress_str} 开始下载视频: {video_id}")
                    if download_video(video_id, unique_id, video_path):
                        logger.info(f"{progress_str} 视频下载成功: {video_id}")
                        self.video_count += 1
                        
                        # 创建字典并添加到列表
                        video_dict = {
                            'id': video_id,
                            'desc': desc,
                            'play_count': play_count
                        }
                        downloaded_videos.append(video_dict)
                    else:
                        logger.error(f"{progress_str} 下载视频失败: {video_id}")
                
                except Exception as e:
                    logger.error(f"{progress_str} 处理单个视频时出错: {e}")
                    logger.error(traceback.format_exc())
                    continue
                
                # 避免过快请求
                logger.info(f"{progress_str} 处理完成，等待2秒...")
                time.sleep(2)
            
            # 更新数据库 - 只更新模型中实际存在的字段
            try:
                TiktokUserVideos.objects.filter(sec_user_id=sec_uid).update(
                    videos_folder=videos_folder
                )
                
                # 记录视频信息，但不保存到数据库
                video_info_json = json.dumps(downloaded_videos, ensure_ascii=False)
                logger.info(f"已处理 {len(downloaded_videos)}/{total_videos} 个视频")
                logger.info(f"数据库更新成功: 更新了 videos_folder={videos_folder}")
                
            except Exception as e:
                logger.error(f"更新数据库失败: {e}")
                logger.error(traceback.format_exc())
        
        except Exception as e:
            logger.error(f"处理用户 {unique_id} 视频时发生错误: {str(e)}")
            logger.error(traceback.format_exc())
        
        return downloaded_videos
            
    def _process_user_followings(self, sec_uid, next_depth):
        """处理用户的关注列表，添加符合粉丝数条件的前5个用户到队列中"""
        try:
            logger.info(f"获取用户关注列表: {sec_uid}, 深度: {next_depth}")
            
            max_cursor = 0  # maxCursor保持为0
            min_cursor = 0  # 初始minCursor为0
            max_time = time.time()
            filtered_users_count = 0  # 已筛选出的符合条件的用户数量
            max_filtered_users = 5  # 只获取前5个符合条件的用户
            processed_sec_uids = set()  # 用于去重
            page = 1  # 页码计数
            
            while True:
                # 如果已经找到足够的用户，停止获取
                if filtered_users_count >= max_filtered_users:
                    logger.info(f"已找到 {max_filtered_users} 个符合条件的用户，停止获取")
                    break
                
                # 获取关注列表，使用正确的游标参数
                logger.info(f"获取关注列表第{page}页: maxCursor={max_cursor}, minCursor={min_cursor}")
                followings_data = fetch_user_followings(sec_uid, max_cursor=max_cursor, min_cursor=min_cursor, page_size=30)
                
                if not followings_data or 'data' not in followings_data:
                    logger.warning(f"无法获取用户关注列表: {sec_uid}")
                    break
                
                # 获取用户列表
                user_list = followings_data['data'].get('userList', [])
                
                if not user_list:
                    logger.info("没有更多关注用户")
                    break
                
                logger.info(f"获取到 {len(user_list)} 个关注用户")
                
                # 使用filter_users_by_followers函数筛选符合粉丝数条件的用户
                filtered_users = filter_users_by_followers(user_list)
                logger.info(f"本页筛选出 {len(filtered_users)} 个粉丝数符合条件的用户")
                
                # 处理筛选后的用户
                for following in filtered_users:
                    # 如果已经找到足够的用户，停止处理
                    if filtered_users_count >= max_filtered_users:
                        break
                    
                    # 获取用户信息
                    user_data = following.get('user', {})
                    stats_data = following.get('stats', {})
                    
                    follower_sec_uid = user_data.get('secUid')
                    follower_unique_id = user_data.get('uniqueId')
                    
                    # 检查必要字段
                    if not follower_sec_uid or not follower_unique_id:
                        logger.warning("用户数据不完整，缺少必要字段")
                        continue
                    
                    # 检查是否已处理过该用户
                    if follower_sec_uid in processed_sec_uids or follower_sec_uid in self.processed_users:
                        continue
                    
                    # 添加到已处理集合
                    processed_sec_uids.add(follower_sec_uid)
                    filtered_users_count += 1
                    
                    # 添加到队列
                    self.user_queue.append((follower_sec_uid, follower_unique_id, next_depth))
                    logger.info(f"添加符合条件的用户到队列: {follower_unique_id}, 粉丝数: {stats_data.get('followerCount', 0)}")
                    
                    # 保存到数据库
                    try:
                        TiktokUserVideos.objects.update_or_create(
                            sec_user_id=follower_sec_uid,
                            defaults={
                                'unique_id': follower_unique_id,
                                'nickname': user_data.get('nickname', ''),
                                'follower_count': stats_data.get('followerCount', 0),
                                'following_count': stats_data.get('followingCount', 0),
                                'video_count': stats_data.get('videoCount', 0)
                            }
                        )
                    except Exception as e:
                        logger.error(f"保存关注用户到数据库失败: {follower_unique_id}, {e}")
                
                # 检查是否已找到足够的用户
                if filtered_users_count >= max_filtered_users:
                    break
                
                # 更新游标处理
                old_min_cursor = min_cursor
                min_cursor = followings_data['data'].get('minCursor', 0)
                has_more = followings_data['data'].get('hasMore', False)
                
                # 记录游标更新
                logger.info(f"游标更新: 旧min_cursor={old_min_cursor} -> 新min_cursor={min_cursor}, has_more={has_more}")
                
                # 检查游标是否有效和是否有更多数据
                if not has_more or min_cursor == old_min_cursor or not min_cursor:
                    logger.info("没有更多数据或游标无效，结束获取")
                    break
                
                # 防止过度请求
                logger.info("等待1秒后获取下一页...")
                time.sleep(1)
                
                # 增加页码
                page += 1
                
                # 时间限制
                if time.time() - max_time > 60:  # 最多获取1分钟
                    logger.warning(f"达到时间限制，停止获取更多关注用户")
                    break
            
            logger.info(f"用户关注处理完成，共筛选出 {filtered_users_count} 个符合条件的用户")
            
        except Exception as e:
            logger.error(f"处理用户关注列表出错: {e}")
            import traceback
            logger.error(traceback.format_exc())
        
    def _report_progress(self, progress, message):
        """报告处理进度"""
        self.progress = progress
        self.progress_message = message
        logger.info(f"进度更新: {progress}%, {message}")
        
    def get_progress(self):
        """获取当前进度信息"""
        return {
            'status': self.status,
            'progress': self.progress,
            'message': self.progress_message,
            'error': self.error_message,
            'user_count': self.user_count,
            'video_count': self.video_count
        }
    
    def get_result(self):
        """获取处理结果，包括统计信息"""
        return {
            'status': self.status,
            'processed_users': self.user_count,
            'downloaded_videos': self.video_count,
            'error': self.error_message,
            'completed_at': datetime.now().isoformat()
        }

@csrf_exempt
@require_http_methods(["POST"])
def start_recursive_fetch_videos(request):
    """启动异步视频获取任务"""
    try:
        # 导入traceback
        import traceback
        
        data = json.loads(request.body)
        start_unique_id = data.get('start_unique_id')
        start_sec_uid = data.get('start_sec_uid')  # 保持参数一致性
        
        # 如果提供了sec_uid但没提供start_sec_uid，使用sec_uid
        if not start_sec_uid and data.get('sec_uid'):
            start_sec_uid = data.get('sec_uid')
            logger.info(f"使用sec_uid作为start_sec_uid: {start_sec_uid}")
        
        mode = data.get('mode', 'by_users')
        max_depth = int(data.get('max_depth', 3))
        skip_user_profile = data.get('skip_user_profile', False)
        max_videos_per_user = int(data.get('max_videos_per_user', 10))
        
        # 检查必要参数
        if not start_unique_id and not start_sec_uid:
            return JsonResponse({
                'code': 400,
                'message': '参数错误',
                'error': '请提供起始用户ID(start_unique_id)或用户secUid(start_sec_uid)'
            }, json_dumps_params={'ensure_ascii': False})
        
        # 确保目标用户数是整数
        target_users = None
        if 'target_users' in data and data['target_users']:
            try:
                target_users = int(data['target_users'])
            except (ValueError, TypeError):
                return JsonResponse({
                    'code': 400,
                    'message': '参数错误',
                    'error': 'target_users必须是整数'
                }, json_dumps_params={'ensure_ascii': False})
        
        # 生成任务ID
        task_id = str(uuid.uuid4())
        
        # 记录任务信息
        logger.info(f"========================= 任务启动 =========================")
        logger.info(f"任务ID: {task_id}")
        logger.info(f"起始用户: {start_unique_id or '使用secUid'}")
        logger.info(f"起始secUid: {start_sec_uid}")
        logger.info(f"模式: {mode}")
        logger.info(f"最大深度: {max_depth}")
        logger.info(f"目标用户数: {target_users if target_users else '不限'}")
        logger.info(f"跳过用户资料: {skip_user_profile}")
        logger.info(f"每用户最大视频数: {max_videos_per_user}")
        logger.info(f"========================================================")
        
        # 创建任务参数字典
        task_params = {
            'start_unique_id': start_unique_id,
            'start_sec_uid': start_sec_uid,  # 保持一致的参数命名
            'mode': mode,
            'target_users': target_users,
            'max_depth': max_depth,
            'skip_user_profile': skip_user_profile,
            'max_videos_per_user': max_videos_per_user
        }
        
        # 初始化任务状态
        set_task_status(task_id, {
            'status': 'pending',
            'progress': 0,
            'message': '任务已提交，等待处理',
            'result': None,
            'error': None,
            'created_at': datetime.now().isoformat(),
            'params': task_params
        })
        
        # 启动异步任务 - 统一使用start_sec_uid参数名
        async_fetch_videos_task.delay(
            task_id,
            start_unique_id,
            max_depth,
            target_users, 
            skip_user_profile,
            start_sec_uid  # 参数名保持一致
        )
        
        # 返回任务ID
        return JsonResponse({
            'code': 200,
            'message': '任务已提交',
            'data': {
                'task_id': task_id,
                'status': 'pending'
            }
        }, json_dumps_params={'ensure_ascii': False})
        
    except Exception as e:
        logger.error(f"启动异步任务失败: {str(e)}")
        import traceback
        logger.error(f"详细错误信息: {traceback.format_exc()}")
        return JsonResponse({
            'code': 500,
            'message': '服务器错误',
            'error': f'启动异步任务失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

@csrf_exempt
@require_http_methods(["GET"])
def check_fetch_task_status(request, task_id):
    """检查任务状态"""
    task_info = get_task_status(task_id)
    
    if not task_info:
        return JsonResponse({
            'status': 'error',
            'message': '任务不存在'
        }, json_dumps_params={'ensure_ascii': False})
    
    # 构建响应数据
    response_data = {
        'status': task_info.get('status', 'unknown'),
        'progress': task_info.get('progress', 0),
        'message': task_info.get('message', ''),
        'error': task_info.get('error'),
        'created_at': task_info.get('created_at', '')
    }
    
    return JsonResponse(response_data, json_dumps_params={'ensure_ascii': False})

@csrf_exempt
@require_http_methods(["GET"])
def get_fetch_task_result(request, task_id):
    """获取任务完整结果"""
    task_info = get_task_status(task_id)
    
    if not task_info:
        return JsonResponse({
            'status': 'error',
            'message': '任务不存在'
        }, json_dumps_params={'ensure_ascii': False})
    
    if task_info['status'] != 'completed':
        return JsonResponse({
            'status': 'error',
            'message': f'任务尚未完成，当前状态: {task_info["status"]}'
        }, json_dumps_params={'ensure_ascii': False})
    
    # 返回完整结果
    return JsonResponse(task_info['result'], json_dumps_params={'ensure_ascii': False})

# 任务管理API
@csrf_exempt
@require_http_methods(["GET"])
def list_fetch_tasks(request):
    """列出所有任务"""
    tasks = []
    all_tasks = list_all_tasks()
    
    for task_info in all_tasks:
        tasks.append({
            'task_id': task_info.get('task_id'),
            'status': task_info.get('status'),
            'progress': task_info.get('progress', 0),
            'message': task_info.get('message', ''),
            'created_at': task_info.get('created_at'),
            'unique_id': task_info.get('params', {}).get('unique_id') if 'params' in task_info else None
        })
    
    return JsonResponse({
        'tasks': sorted(tasks, key=lambda x: x['created_at'] if 'created_at' in x else '', reverse=True)
    }, json_dumps_params={'ensure_ascii': False})

@csrf_exempt
@require_http_methods(["DELETE"])
def clean_completed_tasks(request):
    """清理已完成的任务"""
    completed_count = 0
    all_tasks = list_all_tasks()
    
    for task_info in all_tasks:
        task_id = task_info.get('task_id')
        if task_info.get('status') in ['completed', 'failed']:
            if 'created_at' in task_info and \
               datetime.fromisoformat(task_info['created_at']) < datetime.now() - timedelta(days=1):
                redis_client.delete(f"task_status:{task_id}")
                completed_count += 1
    
    return JsonResponse({
        'status': 'success',
        'message': f'已清理 {completed_count} 个完成超过24小时的任务'
    }, json_dumps_params={'ensure_ascii': False})

@csrf_exempt
@require_http_methods(["POST"])
def fetch_videos_with_callback(request):
    """启动任务并设置回调URL，任务完成后自动发送结果"""
    try:
        data = json.loads(request.body)
        callback_url = data.get('callback_url')
        
        if not callback_url:
            return JsonResponse({
                'status': 'error',
                'message': '必须提供callback_url参数'
            }, json_dumps_params={'ensure_ascii': False})
        
        task_id = str(uuid.uuid4())
        
        # 使用Redis存储任务状态
        set_task_status(task_id, {
            'status': 'pending',
            'progress': 0,
            'message': '任务已创建，等待处理',
            'error': None,
            'callback_url': callback_url,
            'params': data,
            'created_at': datetime.now().isoformat()
        })
        
        # 启动任务
        fetch_and_callback_task.delay(task_id, data)
        
        return JsonResponse({
            'status': 'accepted',
            'message': '任务已启动，完成后将回调通知',
            'task_id': task_id
        }, json_dumps_params={'ensure_ascii': False})
    except Exception as e:
        logger.error(f"启动任务失败: {str(e)}")
        return JsonResponse({
            'status': 'error',
            'message': f'启动任务失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

@shared_task
def fetch_and_callback_task(task_id, data):
    """执行视频获取并回调通知"""
    try:
        # 更新任务状态为处理中
        update_task_status(task_id, {
            'status': 'processing',
            'message': '正在处理中'
        })
        
        # 在任务开始时关闭可能存在的旧连接
        from django.db import connections
        for conn in connections.all():
            conn.close()
            
        fetcher = TiktokVideoFetcher(
            start_unique_id=data.get('unique_id'),
            max_depth=int(data.get('max_depth', 3)),
            target_users=int(data.get('target_users')) if 'target_users' in data and data['target_users'] else None
        )
        
        if fetcher.initialize() and fetcher.process():
            result = fetcher.get_result()
            update_task_status(task_id, {
                'status': 'completed',
                'result': result
            })
        else:
            update_task_status(task_id, {
                'status': 'failed',
                'error': fetcher.error_message
            })
            result = {
                'status': 'error',
                'message': fetcher.error_message
            }
        
        # 发送回调通知
        callback_url = get_task_status(task_id)['callback_url']
        try:
            response = requests.post(callback_url, json={
                'task_id': task_id,
                'result': result
            }, timeout=30)
            
            update_task_status(task_id, {
                'callback_status': response.status_code
            })
        except Exception as e:
            logger.error(f"回调通知失败: {str(e)}")
            update_task_status(task_id, {
                'callback_status': 'failed',
                'callback_error': str(e)
            })
            
            # 尝试发送错误回调
            try:
                callback_url = get_task_status(task_id)['callback_url']
                requests.post(callback_url, json={
                    'task_id': task_id,
                    'status': 'error',
                    'message': str(e)
                }, timeout=30)
            except:
                pass
    except Exception as e:
        logger.error(f"任务执行失败: {str(e)}")
        update_task_status(task_id, {
            'status': 'failed',
            'error': str(e)
        })
        
        # 尝试发送错误回调
        try:
            callback_url = get_task_status(task_id)['callback_url']
            requests.post(callback_url, json={
                'task_id': task_id,
                'status': 'error',
                'message': str(e)
            }, timeout=30)
        except:
            pass

@csrf_exempt
@require_http_methods(["POST"])
def reset_task_status(request, task_id):
    """手动重置任务状态（临时解决方案）"""
    try:
        task_info = get_task_status(task_id)
        
        if not task_info:
            return JsonResponse({
                'status': 'error',
                'message': '任务不存在'
            }, json_dumps_params={'ensure_ascii': False})
        
        # 重置任务状态
        set_task_status(task_id, {
            'status': 'reset',
            'message': '任务已手动重置',
            'reset_time': datetime.now().isoformat(),
            'original_status': task_info.get('status', 'unknown')
        })
        
        return JsonResponse({
            'status': 'success',
            'message': f'任务 {task_id} 已重置'
        }, json_dumps_params={'ensure_ascii': False})
    except Exception as e:
        return JsonResponse({
            'status': 'error',
            'message': f'重置失败: {str(e)}'
        }, json_dumps_params={'ensure_ascii': False})

@csrf_exempt
@require_http_methods(["GET"])
def check_task_status_detail(request, task_id):
    """获取任务详细状态信息（包含调试数据）"""
    task_info = get_task_status(task_id)
    
    if not task_info:
        return JsonResponse({
            'status': 'error',
            'message': '任务不存在'
        }, json_dumps_params={'ensure_ascii': False})
    
    # 添加系统诊断信息
    try:
        import celery.app.control
        from automated_task_monitor.celery import app  # 替换为您的Celery应用实例
        
        # 获取活跃Worker
        inspector = app.control.inspect()
        active_workers = inspector.active()
        active_tasks = inspector.active()
        
        task_info['debug'] = {
            'active_workers': bool(active_workers),
            'worker_count': len(active_workers) if active_workers else 0,
            'active_tasks': active_tasks,
            'server_time': datetime.now().isoformat()
        }
    except Exception as e:
        task_info['debug'] = {
            'error': str(e),
            'server_time': datetime.now().isoformat()
        }
    
    return JsonResponse(task_info, json_dumps_params={'ensure_ascii': False})