from django.http import JsonResponse
# from .models import TiktokUserVideos
import logging
import os
from django.views.decorators.http import require_http_methods
from django.views.decorators.csrf import csrf_exempt
from django.shortcuts import render
import json
import requests
import concurrent.futures
import shutil
import dotenv
import random
from rest_framework.decorators import api_view, permission_classes, authentication_classes
from rest_framework.permissions import IsAuthenticated, AllowAny
from .authentication import CustomTokenAuthentication
import hashlib
import time
from django.contrib.auth.hashers import check_password
from django.utils import timezone

dotenv.load_dotenv()

# 添加logger定义
logger = logging.getLogger(__name__)

directory_monitoring = {}

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

def generate_token(user_id):
    """生成简单的token"""
    # 使用用户ID和当前时间戳生成token
    token_string = f"{user_id}:{time.time()}"
    return hashlib.sha1(token_string.encode()).hexdigest()

def create_user_token(user):
    """创建并保存用户token"""
    from .models import UserToken
    # 删除该用户的所有旧token
    UserToken.objects.filter(user=user).delete()
    # 生成新token
    token = generate_token(user.id)
    # 保存到数据库
    user_token = UserToken.objects.create(
        user=user,
        token=token
    )
    return token

@csrf_exempt
@api_view(['POST'])
@permission_classes([AllowAny])
def user_login(request):
    """
    用户登录接口
    
    返回的 token 使用格式：
    在请求头中添加：
    Authorization: Token <your_token>
    
    例如：
    Authorization: Token fa6931ec4cf5bd46d8dc3a671fe9862c467426b3
    """
    try:
        from .models import User
        import json
        from django.contrib.auth.hashers import check_password
        from datetime import datetime

        data = json.loads(request.body)

        # 获取登录参数
        email = data.get('email')
        password = data.get('password')

        if not email or not password:
            return JsonResponse({
                'code': 400,
                'message': '缺少必要参数: email 或 password',
                'data': None
            }, json_dumps_params={'ensure_ascii': False})

        # 查询用户
        try:
            user = User.objects.get(email=email)

            # 验证密码
            if not user.check_password(password):
                return JsonResponse({
                    'code': 401,
                    'message': '用户名或密码错误',
                    'data': None
                }, json_dumps_params={'ensure_ascii': False})

            # 生成并保存token
            token = create_user_token(user)

            # 检查是否首次登录
            is_first_login = user.is_first_login

            # 更新最后登录时间
            user.last_login = timezone.now()
            user.save()

            # 构造返回数据
            user_data = {
                'user_id': user.id,
                'email': user.email,
                'is_first_login': is_first_login,
                'name': user.name,
                'company': user.company,
                'token': token
            }

            return JsonResponse({
                'code': 200,
                'message': '登录成功',
                'data': user_data
            }, json_dumps_params={'ensure_ascii': False})

        except User.DoesNotExist:
            return JsonResponse({
                'code': 404,
                'message': '用户不存在',
                'data': None
            }, json_dumps_params={'ensure_ascii': False})

    except Exception as e:
        logger.error(f"用户登录失败: {e}")
        import traceback
        logger.error(f"详细错误: {traceback.format_exc()}")
        return JsonResponse({
            'code': 500,
            'message': f'登录失败: {str(e)}',
            'data': None
        }, json_dumps_params={'ensure_ascii': False})


@csrf_exempt
@api_view(['POST'])
@authentication_classes([CustomTokenAuthentication])
@permission_classes([IsAuthenticated])
def update_user_info(request):
    """更新用户信息，需要认证"""
    try:
        data = json.loads(request.body)

        # 获取参数
        company = data.get('company')
        name = data.get('name')
        
        # 获取当前认证用户
        user = request.user
        
        # 如果请求中包含 user_id 且与当前用户不匹配，返回错误
        if 'user_id' in data and int(data['user_id']) != user.id:
            return JsonResponse({
                'code': 403,
                'message': '您只能修改自己的信息',
                'data': None
            }, json_dumps_params={'ensure_ascii': False})

        # 如果是首次登录，需要填写公司和姓名
        if not company or not name:
            return JsonResponse({
                'code': 400,
                'message': '首次登录需要填写公司和姓名',
                'data': None
            }, json_dumps_params={'ensure_ascii': False})

        # 更新信息
        user.company = company
        user.name = name
        user.is_first_login = False  # 更新后不再是首次登录
        user.save()

        return JsonResponse({
            'code': 200,
            'message': '信息更新成功',
            'data': {
                'user_id': user.id,
                'email': user.email,
                'is_first_login': False,
                'name': user.name,
                'company': user.company
            }
        }, json_dumps_params={'ensure_ascii': False})

    except Exception as e:
        logger.error(f"更新用户信息失败: {e}")
        import traceback
        logger.error(f"详细错误: {traceback.format_exc()}")
        return JsonResponse({
            'code': 500,
            'message': f'更新用户信息失败: {str(e)}',
            'data': None
        }, json_dumps_params={'ensure_ascii': False})


@csrf_exempt
@api_view(['POST'])
@permission_classes([AllowAny])
def user_register(request):
    """用户注册接口"""
    try:
        from .models import User
        import json
        from datetime import datetime

        data = json.loads(request.body)

        # 获取注册参数
        email = data.get('email')
        password = data.get('password')
        company = data.get('company')  # 可选参数
        name = data.get('name')  # 可选参数

        # 检查必要参数
        if not email or not password:
            return JsonResponse({
                'code': 400,
                'message': '缺少必要参数: email 或 password',
                'data': None
            }, json_dumps_params={'ensure_ascii': False})

        # 检查邮箱是否已注册
        if User.objects.filter(email=email).exists():
            return JsonResponse({
                'code': 409,
                'message': '该邮箱已注册',
                'data': None
            }, json_dumps_params={'ensure_ascii': False})

        # 创建用户
        try:
            # 根据是否提供公司和姓名决定是否为首次登录
            is_first_login = not (company and name)

            # 创建用户
            user = User.objects.create_user(
                email=email,
                password=password,
                company=company,
                name=name,
                is_first_login=is_first_login,
                last_login=timezone.now()
            )

            # 构造返回数据
            user_data = {
                'user_id': user.id,
                'email': user.email,
                'is_first_login': is_first_login,
                'company': user.company,
                'name': user.name
            }

            return JsonResponse({
                'code': 200,
                'message': '注册成功',
                'data': user_data
            }, json_dumps_params={'ensure_ascii': False})

        except Exception as e:
            logger.error(f"创建用户失败: {e}")
            return JsonResponse({
                'code': 500,
                'message': f'注册失败: {str(e)}',
                'data': None
            }, json_dumps_params={'ensure_ascii': False})

    except Exception as e:
        logger.error(f"用户注册失败: {e}")
        import traceback
        logger.error(f"详细错误: {traceback.format_exc()}")
        return JsonResponse({
            'code': 500,
            'message': f'注册失败: {str(e)}',
            'data': None
        }, json_dumps_params={'ensure_ascii': False})