jyls_django/business/views.py

from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
import json
import ast
import re
from decimal import Decimal, InvalidOperation
from User.models import User, Approval
from User.utils import log_operation, normalize_approvers_param, build_missing_approvers_message
from .models import PreFiling, ProjectRegistration, Bid, Case, Invoice, Caselog, SealApplication, Warehousing, \
    RegisterPlatform, Announcement, LawyerFlie, Schedule, permission, role, CaseChangeRequest, CaseTag,Propaganda,System, ContractCounter
from .contract_no import generate_next_contract_no, get_next_contract_no_preview
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from utility.utility import flies
from datetime import datetime

from django.db.models import Count, Q
from django.db import transaction
import os

def normalize_match_reason(reason_str):
    """
    将多条重复语义的冲突原因归纳为简洁、易读的一条或几条说明。
    例如：委托人姓名匹配；相对方与委托人姓名匹配；相对方姓名匹配；委托人与相对方姓名匹配
    归纳为：委托人姓名与历史记录一致；相对方姓名与历史记录一致
    """
    if not reason_str or reason_str.strip() == '匹配':
        return reason_str.strip() or '匹配'
    parts = [p.strip() for p in reason_str.split('；') if p.strip()]
    # 按类型归纳，避免重复表述
    has_client_name = any(
        '委托人姓名匹配' in p or '相对方与委托人姓名匹配' in p for p in parts
    )
    has_client_info = any(
        '委托人信息匹配' in p or '相对方与委托人信息匹配' in p for p in parts
    )
    has_client_id = any('委托人身份证号匹配' in p for p in parts)
    has_party_name = any(
        '相对方姓名匹配' in p or '委托人与相对方姓名匹配' in p for p in parts
    )
    has_party_info = any(
        '相对方信息匹配' in p or '委托人与相对方信息匹配' in p for p in parts
    )
    has_party_id = any('相对方身份证号匹配' in p for p in parts)
    # 立项表：相对方与委托人身份证号匹配 等
    has_party_client_id = any(
        '相对方与委托人身份证号匹配' in p or '委托人与相对方身份证号匹配' in p for p in parts
    )
    undertaker_parts = [p for p in parts if '承办人员匹配' in p or '承办人' in p]
    responsible_parts = [p for p in parts if '负责人匹配' in p]
    # 招标单位相关（投标表）
    bid_parts = [
        p for p in parts
        if '招标单位' in p or '在招标单位中' in p or '在招标单位' in p
    ]
    result = []
    if has_client_name:
        result.append('委托人姓名与历史记录一致')
    if has_client_info:
        result.append('委托人信息与历史记录一致')
    if has_client_id:
        result.append('委托人身份证号与历史记录一致')
    if has_party_name:
        result.append('相对方姓名与历史记录一致')
    if has_party_info:
        result.append('相对方信息与历史记录一致')
    if has_party_id:
        result.append('相对方身份证号与历史记录一致')
    # 立项表：委托人身份证在相对方字段/相对方身份证在委托人字段出现时
    if has_party_client_id and not (has_client_id or has_party_id):
        result.append('委托人或相对方身份证号与历史记录一致')
    result.extend(undertaker_parts)
    result.extend(responsible_parts)
    result.extend(bid_parts)
    return '；'.join(result) if result else '匹配'


def get_user_team_name(username):
    if not username:
        return None
    try:
        user = User.objects.get(username=username, is_deleted=False)
        return user.team
    except User.DoesNotExist:
        return None


def get_team_name_from_responsiblefor(responsiblefor):
    if not responsiblefor:
        return None
    try:
        data = json.loads(responsiblefor) if isinstance(responsiblefor, str) else responsiblefor
    except (json.JSONDecodeError, TypeError):
        return None
    if isinstance(data, dict):
        responsible_person = data.get('responsible_person')
        if responsible_person is None:
            return None
        # 兼容负责人人员ID或用户名
        if str(responsible_person).strip().isdigit():
            try:
                user = User.objects.get(id=int(responsible_person), is_deleted=False)
                return user.team
            except User.DoesNotExist:
                return None
        return get_user_team_name(responsible_person)
    return None


def search_related_records(client_info, party_info, exclude_project_id=None):
    """
    根据委托人和相对方信息检索预立案、投标、立项三个表的冲突记录。
    冲突规则：当前委托人只与历史「委托人」匹配，当前相对方只与历史「相对方」匹配，任一匹配即视为冲突。
    
    Args:
        client_info: 委托人身份信息（字符串）
        party_info: 相对方身份信息（字符串）
        exclude_project_id: 要排除的立项ID（可选，用于排除当前正在创建的记录）
    
    Returns:
        dict: 包含三个表的冲突记录信息
        {
            'prefiling_conflicts': [...],  # 预立案冲突记录列表
            'project_conflicts': [...],    # 立项冲突记录列表
            'bid_conflicts': [...]         # 投标冲突记录列表
        }
    """
    result = {
        'prefiling_conflicts': [],
        'project_conflicts': [],
        'bid_conflicts': []
    }
    
    if not client_info and not party_info:
        return result
    
    # 解析委托人和相对方信息（支持 JSON 数组，提取所有人员）
    client_names, client_id_numbers, client_originals = _extract_all_person_info(client_info)
    party_names, party_id_numbers, party_originals = _extract_all_person_info(party_info)
    
    # 检索预立案表 - 委托人只匹配历史委托人，相对方只匹配历史相对方，任一匹配即冲突
    if client_names or party_names:
        matched_prefilings = []
        prefiling_all = PreFiling.objects.filter(is_deleted=False)
        for pf in prefiling_all[:100]:
            if len(matched_prefilings) >= 10:
                break
            pf_client_names = []
            try:
                cd = json.loads(pf.client_username) if isinstance(pf.client_username, str) else pf.client_username
                if isinstance(cd, list):
                    for item in cd:
                        if isinstance(item, dict) and 'name' in item:
                            pf_client_names.append(item['name'].strip())
                elif isinstance(cd, dict) and 'name' in cd:
                    pf_client_names.append(cd['name'].strip())
            except (json.JSONDecodeError, TypeError, AttributeError):
                pf_client_names = [pf.client_username.strip()] if pf.client_username else []
            pf_party_names = []
            try:
                pd = json.loads(pf.party_username) if isinstance(pf.party_username, str) else pf.party_username
                if isinstance(pd, list):
                    for item in pd:
                        if isinstance(item, dict) and 'name' in item:
                            pf_party_names.append(item['name'].strip())
                elif isinstance(pd, dict) and 'name' in pd:
                    pf_party_names.append(pd['name'].strip())
            except (json.JSONDecodeError, TypeError, AttributeError):
                pf_party_names = [pf.party_username.strip()] if pf.party_username else []
            client_match = False
            if client_names and pf_client_names:
                for pf_c in pf_client_names:
                    if any(pf_c in cn for cn in client_names) or any(pf_c in co for co in client_originals):
                        client_match = True
                        break
            party_match = False
            if party_names and pf_party_names:
                for pf_p in pf_party_names:
                    if any(pf_p in pn for pn in party_names) or any(pf_p in po for po in party_originals):
                        party_match = True
                        break
            if client_match or party_match:
                matched_prefilings.append({
                    'id': pf.id,
                    'times': pf.times,
                    'client_username': pf.client_username,
                    'party_username': pf.party_username,
                    'description': pf.description
                })
        result['prefiling_conflicts'] = matched_prefilings

    # 检索立项表 - 委托人只匹配历史 client_info，相对方只匹配历史 party_info
    project_records = ProjectRegistration.objects.filter(is_deleted=False)
    if exclude_project_id:
        project_records = project_records.exclude(id=exclude_project_id)
    project_q = Q()
    for cn in client_names:
        project_q |= Q(client_info__icontains=cn)
    for co in client_originals:
        project_q |= Q(client_info__icontains=co[:50])
    for cid in client_id_numbers:
        project_q |= Q(client_info__icontains=cid)
    for pn in party_names:
        project_q |= Q(party_info__icontains=pn)
    for po in party_originals:
        project_q |= Q(party_info__icontains=po[:50])
    for pid in party_id_numbers:
        project_q |= Q(party_info__icontains=pid)
    if project_q:
        project_records = project_records.filter(project_q)
        project_list = list(project_records[:10].values('id', 'ContractNo', 'times', 'type', 'client_info', 'party_info'))
        result['project_conflicts'] = project_list

    # 检索投标表 - 招标单位是否包含委托人或相对方信息
    bid_records = Bid.objects.filter(is_deleted=False)
    bid_q = Q()
    for cn in client_names:
        bid_q |= Q(BiddingUnit__icontains=cn)
    for pn in party_names:
        bid_q |= Q(BiddingUnit__icontains=pn)
    for co in client_originals:
        bid_q |= Q(BiddingUnit__icontains=co[:50])
    for po in party_originals:
        bid_q |= Q(BiddingUnit__icontains=po[:50])
    for cid in client_id_numbers:
        bid_q |= Q(BiddingUnit__icontains=cid)
    for pid in party_id_numbers:
        bid_q |= Q(BiddingUnit__icontains=pid)
    if bid_q:
        bid_records = bid_records.filter(bid_q)
        bid_list = list(bid_records[:10].values('id', 'ProjectName', 'times', 'BiddingUnit'))
        result['bid_conflicts'] = bid_list
    
    return result


def get_change_approvers():
    """获取变更审批人（管委会或行政部）"""
    try:
        approvers = (
            User.objects.filter(is_deleted=False)
            .filter(
                Q(role__RoleName__in=["管委会", "行政部"])
                | Q(department__username="行政部")
            )
            .distinct()
            .order_by("id")
        )
        return [user.username for user in approvers if user.username]
    except Exception:
        return []


def build_change_approval_content(applicant_name, case, change_item, change_reason, agreement_urls):
    agreement_display = "，".join(agreement_urls) if agreement_urls else "无"
    return (
        f"{applicant_name}提交案件变更申请，"
        f"案件ID：{case.id}，"
        f"变更事项：{change_item}，"
        f"变更原因：{change_reason}，"
        f"变更协议：{agreement_display}"
    )


def build_case_approval_content(project_registration, times, change_request=False):
    times_str = times or "未填写日期"
    content_parts = [f"{times_str}提交了一份案件信息"]
    if change_request:
        content_parts[0] = f"{times_str}提交了一份案件信息，更改了变更申请"

    if project_registration:
        if project_registration.ContractNo:
            content_parts.append(f"合同编号：{project_registration.ContractNo}")
        if project_registration.type:
            content_parts.append(f"项目类型：{project_registration.type}")
        if project_registration.client_info:
            # 解析客户名称：如果是JSON格式，只提取name字段
            client_info_str = project_registration.client_info
            try:
                # 尝试解析为JSON数组
                client_info_list = json.loads(client_info_str)
                if isinstance(client_info_list, list) and len(client_info_list) > 0:
                    # 提取所有name字段，用逗号连接
                    client_names = [item.get('name', '') for item in client_info_list if isinstance(item, dict) and item.get('name')]
                    client_info_str = '、'.join(client_names) if client_names else client_info_str
            except (json.JSONDecodeError, TypeError, AttributeError):
                # 如果不是JSON格式，保持原样
                pass
            content_parts.append(f"客户名称：{client_info_str}")
        if project_registration.party_info:
            # 解析相对方名称：如果是JSON格式，只提取name字段
            party_info_str = project_registration.party_info
            try:
                # 尝试解析为JSON数组
                party_info_list = json.loads(party_info_str)
                if isinstance(party_info_list, list) and len(party_info_list) > 0:
                    # 提取所有name字段，用逗号连接
                    party_names = [item.get('name', '') for item in party_info_list if isinstance(item, dict) and item.get('name')]
                    party_info_str = '、'.join(party_names) if party_names else party_info_str
            except (json.JSONDecodeError, TypeError, AttributeError):
                # 如果不是JSON格式，保持原样
                pass
            content_parts.append(f"相对方名称：{party_info_str}")
        if project_registration.description:
            content_parts.append(f"项目简述：{project_registration.description}")

        try:
            responsiblefor_dict = json.loads(project_registration.responsiblefor) if project_registration.responsiblefor else {}
        except (json.JSONDecodeError, TypeError):
            responsiblefor_dict = project_registration.responsiblefor if project_registration.responsiblefor else {}
        if isinstance(responsiblefor_dict, dict) and responsiblefor_dict.get("responsible_person"):
            content_parts.append(f"承办人：{responsiblefor_dict.get('responsible_person')}")

        if project_registration.charge:
            content_parts.append(f"收费情况：{project_registration.charge}")

    if change_request:
        content_parts.append("请审核变更申请")
    else:
        content_parts.append("请审核")

    return "，".join(content_parts)


def normalize_amount_value(value):
    if value is None:
        return "0"
    if isinstance(value, (int, float, Decimal)):
        return str(value)
    value_str = str(value).strip()
    if value_str in ["", "未开票", "None", "null"]:
        return "0"
    numbers = re.findall(r"\d+\.?\d*", value_str)
    return numbers[0] if numbers else "0"

class registration(APIView):
    def post(self, request, *args, **kwargs):
        """
        预立案登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        token = request.META.get('token')
        times = request.data.get('times')
        client_username = request.data.get('client_username')
        party_username = request.data.get('party_username')
        description = request.data.get('description')
        Undertaker = request.data.get('Undertaker')
        user = User.objects.get(token=token, is_deleted=False).username
        if not all([times, description, Undertaker]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        prefiling = PreFiling.objects.create(
            times=times,
            client_username=client_username,
            party_username=party_username,
            description=description,
            Undertaker=Undertaker,
            submit=user
        )

        # 利益冲突检索：比对预立案、立项、投标三张表（直接传 JSON，conflict_search 内部解析所有人员）
        conflict_result = conflict_search(
            client_info=prefiling.client_username,
            party_info=prefiling.party_username,
            undertaker=Undertaker,
            exclude_prefiling_id=prefiling.id
        )
        total_conflicts = (
            len(conflict_result['prefiling_conflicts'])
            + len(conflict_result['project_conflicts'])
            + len(conflict_result['bid_conflicts'])
        )

        # 记录操作日志
        new_data = {
            'id': prefiling.id,
            'client_username': prefiling.client_username,
            'party_username': prefiling.party_username,
            'undertaker': prefiling.Undertaker
        }
        log_operation(
            request=request,
            operation_type='CREATE',
            module='Business',
            action='新增预立案登记',
            target_type='PreFiling',
            target_id=prefiling.id,
            target_name=f'{prefiling.client_username} vs {prefiling.party_username}',
            new_data=new_data,
            remark=f'新增预立案登记：委托人 {prefiling.client_username}，相对方 {prefiling.party_username}'
        )

        return Response({
            'message': '登记成功',
            'code': 0,
            'conflict_result': {
                'total_conflicts': total_conflicts,
                'prefiling_conflicts_count': len(conflict_result['prefiling_conflicts']),
                'project_conflicts_count': len(conflict_result['project_conflicts']),
                'bid_conflicts_count': len(conflict_result['bid_conflicts']),
                'prefiling_conflicts': conflict_result['prefiling_conflicts'],
                'project_conflicts': conflict_result['project_conflicts'],
                'bid_conflicts': conflict_result['bid_conflicts'],
            }
        }, status=status.HTTP_200_OK)


class registrationList(APIView):
    def post(self, request, *args, **kwargs):
        """
        预立案登记列表接口
        注意：由于预立案和立项登记、投标登记已经拆分，现在返回所有未删除的预立案
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        # 由于预立案和立项登记、投标登记已经拆分，不再需要检查关联
        # 直接返回所有未删除的预立案
        prefiling_list = PreFiling.objects.filter(is_deleted=False)
        data = []
        for prefiling in prefiling_list:
            data.append({
                "id": prefiling.id,
                "client_username": prefiling.client_username,
                "party_username": prefiling.party_username,
            })
        return Response({'message': '展示成功', 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class registrationDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        预立案登记展示
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        times = request.data.get('times')
        end_time = request.data.get('end_time')
        Undertaker = request.data.get('Undertaker')
        if not all([page, per_page]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        Q_obj = Q()
        if times and end_time:
            Q_obj &= Q(times__gte=times) & Q(times__lte=end_time)
        if Undertaker:
            Q_obj &= Q(Undertaker__icontains=Undertaker)

        pre = PreFiling.objects.filter(Q_obj, is_deleted=False).order_by('-id')
        total = len(pre)

        paginator = Paginator(pre, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        for info in user_agents_page.object_list:
            data.append({
                "id": info.id,
                'times': info.times,
                "client_username": info.client_username,
                "party_username": info.party_username,
                "description": info.description,
                "Undertaker": info.Undertaker,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditRegistration(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑预立案登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        times = request.data.get('times')
        client_username = request.data.get('client_username')
        party_username = request.data.get('party_username')
        description = request.data.get('description')
        Undertaker = request.data.get('Undertaker')

        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            pre = PreFiling.objects.get(id=id, is_deleted=False)
        except PreFiling.DoesNotExist:
            return Response({'status': 'error', 'message': '预立案登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        # 更新字段（如果提供了值）
        if times:
            pre.times = times
            pre.save(update_fields=['times'])
        if client_username:
            pre.client_username = client_username
            pre.save(update_fields=['client_username'])
        if party_username:
            pre.party_username = party_username
            pre.save(update_fields=['party_username'])
        if description:
            pre.description = description
            pre.save(update_fields=['description'])
        if Undertaker:
            pre.Undertaker = Undertaker
            pre.save(update_fields=['Undertaker'])

        # 利益冲突检索：比对预立案、立项、投标三张表（直接传 JSON，conflict_search 内部解析所有人员）
        conflict_result = conflict_search(
            client_info=pre.client_username,
            party_info=pre.party_username,
            undertaker=pre.Undertaker,
            exclude_prefiling_id=pre.id
        )
        total_conflicts = (
            len(conflict_result['prefiling_conflicts'])
            + len(conflict_result['project_conflicts'])
            + len(conflict_result['bid_conflicts'])
        )

        return Response({
            'message': '编辑成功',
            'code': 0,
            'conflict_result': {
                'total_conflicts': total_conflicts,
                'prefiling_conflicts_count': len(conflict_result['prefiling_conflicts']),
                'project_conflicts_count': len(conflict_result['project_conflicts']),
                'bid_conflicts_count': len(conflict_result['bid_conflicts']),
                'prefiling_conflicts': conflict_result['prefiling_conflicts'],
                'project_conflicts': conflict_result['project_conflicts'],
                'bid_conflicts': conflict_result['bid_conflicts'],
            }
        }, status=status.HTTP_200_OK)


class Project(APIView):
    def post(self, request, *args, **kwargs):
        """
        立项登记 - 独立创建，不再需要预立案。
        必填：项目类型、立项日期、项目简述、收费情况、承办人信息、合同。
        合同编号(ContractNo)可选：不传或传空时由后端按规则自动生成（校准(字)字【年份】第n号）。
        相对方(party_info)为非必填项，委托人(client_info)可为空。
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        project_type = request.data.get('type')
        ContractNo = request.data.get('ContractNo')
        if ContractNo is not None and not isinstance(ContractNo, str):
            ContractNo = str(ContractNo)
        times = request.data.get('times')
        client_info = request.data.get('client_info')  # 委托人身份信息（可选）
        party_info = request.data.get('party_info')  # 相对方身份信息（非必填）
        description = request.data.get('description')  # 项目简述
        responsiblefor = request.data.get('responsiblefor')  # 承办人信息（字典格式）
        charge = request.data.get('charge')
        contract = request.FILES.getlist('contract')
        approvers = request.data.get('approvers')  # 审核人列表（可选，多人团队时需要，推荐：用户ID数组如[1,2,3]，兼容：用户名数组）
        # 兼容旧接口：如果传了 personincharge，转换为 approvers
        personincharge = request.data.get('personincharge')


        approvers = normalize_approvers_param(approvers, personincharge)

        import datetime
        import json

        # 明确拒绝 user_id 参数（此接口不再需要预立案，不需要 user_id）
        if 'user_id' in request.data:
            return Response({'status': 'error', 'message': '此接口不需要 user_id 参数，立项登记已独立创建', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        # 验证必填字段（合同编号可选，不传则后端自动生成）
        if not all([project_type, times, description, charge]):
            return Response({'status': 'error', 'message': '缺少必填参数（项目类型、立项日期、项目简述、收费情况）', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        # 验证承办人信息（字典格式）
        if not responsiblefor:
            return Response({'status': 'error', 'message': '承办人信息不能为空', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        
        # 解析承办人信息（支持字符串JSON或字典）
        try:
            if isinstance(responsiblefor, str):
                responsiblefor_dict = json.loads(responsiblefor)
            else:
                responsiblefor_dict = responsiblefor
            
            # 验证承办人（responsible_person）必填
            if not responsiblefor_dict.get('responsible_person'):
                return Response({'status': 'error', 'message': '承办人不能为空', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
            
            # 将字典转换为JSON字符串存储
            responsiblefor_str = json.dumps(responsiblefor_dict, ensure_ascii=False)
        except (json.JSONDecodeError, TypeError, AttributeError):
            return Response({'status': 'error', 'message': '承办人信息格式错误，应为字典格式', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        if contract:
            contract = flies(contract)
        else:
            contract = []

        # 将文件URL列表转换为字符串存储（如果有多个URL，用逗号分隔）
        if contract:
            # 如果只有一个URL，直接存储；如果有多个，用逗号分隔
            contract_str = contract[0] if len(contract) == 1 else ','.join(contract)
        else:
            contract_str = ""

        need_auto_contract_no = not (ContractNo and ContractNo.strip())
        if not need_auto_contract_no:
            # 用户传入合同编号：检查是否已存在
            existing_project = ProjectRegistration.objects.filter(ContractNo=ContractNo.strip(), is_deleted=False).first()
            if existing_project:
                return Response({'status': 'error', 'message': '该合同编号已存在，不能重复创建', 'code': 1},
                                status=status.HTTP_400_BAD_REQUEST)

        contract_year = int(times[:4]) if times and len(times) >= 4 else datetime.now().year

        # 使用事务确保创建立项和更新计数器是原子操作
        with transaction.atomic():
            if need_auto_contract_no:
                ContractNo = generate_next_contract_no(project_type, contract_year)
                if not ContractNo:
                    return Response({
                        'status': 'error',
                        'message': f'项目类型「{project_type}」未配置合同编号规则，无法自动生成。请手动填写合同编号，或选择已配置的类型（如：法律顾问、专项服务、民事案件代理等）',
                        'code': 1
                    }, status=status.HTTP_400_BAD_REQUEST)

            # 创建立项登记（相对方可为空，空字符串统一为 None）
            pro = ProjectRegistration.objects.create(
                type=project_type,
                ContractNo=ContractNo.strip() if isinstance(ContractNo, str) else ContractNo,
                times=times,
                client_info=client_info or None,
                party_info=party_info if party_info not in (None, '') else None,
                description=description,
                responsiblefor=responsiblefor_str,
                charge=charge,
                contract=contract_str,
                state="审核中",
            )

            # 仅当用户手动传入合同编号时，更新计数器（与自动生成逻辑一致，保证序号连续）
            if not need_auto_contract_no:
                try:
                    counter, created = ContractCounter.objects.select_for_update().get_or_create(
                        project_type=project_type,
                        year=contract_year,
                        defaults={'current_number': 1}
                    )
                    if not created:
                        counter.current_number += 1
                        counter.save(update_fields=['current_number', 'updated_at'])
                except Exception as e:
                    import logging
                    logging.warning(f"更新合同编号计数器失败: {e}")


        today = datetime.datetime.now()
        formatted_date = today.strftime("%Y-%m-%d")
        
        # 获取团队信息：优先承办人，其次当前登录用户
        team_name = get_team_name_from_responsiblefor(responsiblefor_dict)
        request_user = None
        token = request.META.get('token') or request.META.get('HTTP_AUTHORIZATION', '').replace('Bearer ', '')
        if token:
            try:
                request_user = User.objects.get(token=token, is_deleted=False)
                if not team_name:
                    team_name = request_user.team
            except User.DoesNotExist:
                pass
        
        # 使用统一的审核流程函数
        from User.utils import create_approval_with_team_logic
        
        # 构建承办人信息描述
        responsible_desc = responsiblefor_dict.get('responsible_person', '')
        if responsiblefor_dict.get('main_lawyer'):
            responsible_desc += f"，主办律师：{responsiblefor_dict.get('main_lawyer')}"
        if responsiblefor_dict.get('assistant_lawyer'):
            responsible_desc += f"，协办律师：{responsiblefor_dict.get('assistant_lawyer')}"
        if responsiblefor_dict.get('case_manager_lawyer'):
            responsible_desc += f"，案管律师：{responsiblefor_dict.get('case_manager_lawyer')}"
        
        # 检索相关记录（预立案、投标、立项）- 使用 conflict_search 函数，支持更灵活的参数组合
        related_records_info = conflict_search(client_info=client_info, party_info=party_info, exclude_project_id=pro.id)
        
        # 构建冲突信息文本（用于content字段，保持向后兼容）
        conflict_parts = []
        if related_records_info['prefiling_conflicts']:
            conflict_parts.append(f"预立案冲突：{len(related_records_info['prefiling_conflicts'])}条（ID：{','.join([str(r['id']) for r in related_records_info['prefiling_conflicts'][:5]])}{'...' if len(related_records_info['prefiling_conflicts']) > 5 else ''}）")
        if related_records_info['project_conflicts']:
            conflict_parts.append(f"立项冲突：{len(related_records_info['project_conflicts'])}条（合同编号：{','.join([r['ContractNo'] for r in related_records_info['project_conflicts'][:3]])}{'...' if len(related_records_info['project_conflicts']) > 3 else ''}）")
        if related_records_info['bid_conflicts']:
            conflict_parts.append(f"投标冲突：{len(related_records_info['bid_conflicts'])}条（项目：{','.join([r['ProjectName'][:20] if r['ProjectName'] else '' for r in related_records_info['bid_conflicts'][:3]])}{'...' if len(related_records_info['bid_conflicts']) > 3 else ''}）")
        
        conflict_text = "；冲突记录：" + "；".join(conflict_parts) if conflict_parts else ""
        applicant_name = request_user.username if request_user else ""
        content = f"{responsiblefor_dict.get('responsible_person')}在{times}办理立项登记，项目类型：{project_type}，合同编号：{ContractNo}，{responsible_desc}，收费情况：{charge}，申请人：{applicant_name}{conflict_text}"
        
        approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
            team_name=team_name,
            approvers=approvers,
            title=responsiblefor_dict.get('responsible_person', '') + "立项登记",
            content=content,
            approval_type="立项登记",
            user_id=pro.id,
            business_record=pro,
            today=formatted_date,
            applicant=applicant_name
        )
        
        # 如果返回None且需要审核，说明缺少审核人
        if approval is None and needs_approval:
            return Response({
                'status': 'error',
                'message': build_missing_approvers_message(team_name, approvers),
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        # 记录操作日志
        new_data = {
            'id': pro.id,
            'contract_no': pro.ContractNo,
            'type': pro.type,
            'responsiblefor': responsiblefor_dict,
            'times': pro.times
        }
        log_operation(
            request=request,
            operation_type='CREATE',
            module='Business',
            action='新增立项登记',
            target_type='ProjectRegistration',
            target_id=pro.id,
            target_name=pro.ContractNo,
            new_data=new_data,
            remark=f'新增立项登记：合同编号 {pro.ContractNo}，承办人 {responsiblefor_dict.get("responsible_person", "")}'
        )

        return Response({
            'message': '登记成功',
            'code': 0,
            'contract_no': pro.ContractNo,
        }, status=status.HTTP_200_OK)


class Projectquerytype(APIView):
    def post(self, request, *args, **kwargs):
        """
        根据年份和项目类型，先查该年份该项目类型的编号（序号），再组装成合同编号返回。

        入参：
          - type（必填）：项目类型，如 法律顾问、专项服务
          - year（可选）：年份，如 2025；不传则用 times 或当前年
          - times（可选）：日期字符串，取前四位作为年份

        逻辑：1) 按 年份 + 项目类型 查询当前已用到的编号（序号）
             2) 下一个可用编号 = 当前编号 + 1，组装成「校准(字)字【年份】第n号」
        返回 data：
          - contract_no：组装好的合同编号（下一个可用），如 校准(顾)字【2025】第1号
          - number：下一个可用序号
          - count：该年份该项目类型当前已用数量（已用到的最大序号）
        """
        project_type = request.data.get('type')
        if not project_type:
            return Response({'status': 'error', 'message': '缺少参数type', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        # 解析年份：优先 year，其次 times 前四位，否则当前年
        year_param = request.data.get('year')
        times = request.data.get('times')
        if year_param is not None and str(year_param).strip():
            try:
                current_year = int(str(year_param).strip()[:4])
            except ValueError:
                current_year = datetime.now().year
        elif times and len(str(times)) >= 4:
            try:
                current_year = int(str(times)[:4])
            except ValueError:
                current_year = datetime.now().year
        else:
            current_year = datetime.now().year

        # 1) 根据年份 + 项目类型 查询该年份该项目类型的编号（当前已用到的序号）
        try:
            with transaction.atomic():
                counter = ContractCounter.objects.filter(
                    project_type=project_type,
                    year=current_year
                ).first()
                count = counter.current_number if counter else 0
        except Exception:
            start_of_year = datetime(current_year, 1, 1)
            end_of_year = datetime(current_year, 12, 31)
            start_of_year_str = start_of_year.strftime("%Y-%m-%d")
            end_of_year_str = end_of_year.strftime("%Y-%m-%d")
            count = ProjectRegistration.objects.filter(
                type=project_type,
                times__gte=start_of_year_str,
                times__lte=end_of_year_str,
                is_deleted=False
            ).count()

        # 2) 下一个可用编号 = 当前数量 + 1，组装成合同编号
        next_number, contract_no = get_next_contract_no_preview(project_type, current_year)
        if not contract_no:
            return Response({
                'status': 'error',
                'message': f'项目类型「{project_type}」未配置合同编号规则，无法组装编号',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        data = {
            "contract_no": contract_no,
            "number": next_number,
            "count": count,
        }
        return Response({'message': '查询成功', "data": data, 'code': 0}, status=status.HTTP_200_OK)


def _get_project_registration_queryset_by_permission(request, base_q=None):
    """
    立项登记权限：管理员可见全部，承办人仅可见自己承办的立项。
    base_q: 额外筛选条件（Q 对象），可为 None。
    返回 (queryset, error_response)。error_response 非 None 时直接 return 给前端。
    """
    token = request.META.get('token')
    if not token:
        return None, Response({'status': 'error', 'message': '需要登录', 'code': 1}, status=status.HTTP_401_UNAUTHORIZED)
    try:
        current_user = User.objects.get(token=token, is_deleted=False)
    except User.DoesNotExist:
        return None, Response({'status': 'error', 'message': '用户不存在或未登录', 'code': 1}, status=status.HTTP_401_UNAUTHORIZED)
    is_admin = (current_user.username == 'admin' or current_user.account == 'admin')
    q = base_q if base_q is not None else Q()
    q &= Q(is_deleted=False)
    if not is_admin:
        # 承办人只能看到自己承办的立项（responsiblefor 中包含当前用户名，如 responsible_person 等）
        q &= Q(responsiblefor__icontains=current_user.username)
    return ProjectRegistration.objects.filter(q), None


class ProjectDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        立项登记展示
        权限：管理员可见全部立项；承办人仅可见自己承办的立项（负责人修改为承办人）。
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        times = request.data.get('times')
        end_time = request.data.get('end_time')
        client_info = request.data.get('client_info')  # 委托人信息搜索
        party_info = request.data.get('party_info')  # 相对方信息搜索
        if not all([page, per_page]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        Q_obj = Q()
        if times and end_time:
            Q_obj &= Q(times__gte=times) & Q(times__lte=end_time)
        if client_info:
            Q_obj &= Q(client_info__icontains=client_info)
        if party_info:
            Q_obj &= Q(party_info__icontains=party_info)

        pre_qs, err = _get_project_registration_queryset_by_permission(request, Q_obj)
        if err is not None:
            return err
        pre = pre_qs.order_by('-id')
        total = len(pre)

        paginator = Paginator(pre, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        import json
        for info in user_agents_page.object_list:
            # 解析承办人信息（JSON字符串转字典，原负责人即承办人）
            try:
                responsiblefor_dict = json.loads(info.responsiblefor) if info.responsiblefor else {}
            except Exception:
                responsiblefor_dict = info.responsiblefor if info.responsiblefor else {}
            
            data.append({
                "id": info.id,
                'times': info.times,
                "type": info.type,
                "ContractNo": info.ContractNo,
                "client_info": info.client_info,
                "party_info": info.party_info,
                "description": info.description,
                "responsiblefor": responsiblefor_dict,  # 承办人信息（字典格式）
                "charge": info.charge,
                "contract": info.contract,
                "state": info.state,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditProject(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑立案登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')

        if not id:
            return Response({'status': 'error', 'message': '缺少参数id', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        # 检查不可修改的参数（前端不会传入，但作为安全措施进行检查）
        forbidden_params = []
        if 'type' in request.data:
            forbidden_params.append('type')
        if 'ContractNo' in request.data:
            forbidden_params.append('ContractNo')
        if forbidden_params:
            return Response({
                'status': 'error',
                'message': f'以下参数不允许修改: {", ".join(forbidden_params)}',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        # 获取可修改的参数（前端只传入这些参数）
        times = request.data.get('times')
        client_info = request.data.get('client_info')
        party_info = request.data.get('party_info')
        description = request.data.get('description')
        responsiblefor = request.data.get('responsiblefor')  # 承办人信息（字典格式）
        charge = request.data.get('charge')
        contract = request.FILES.getlist('contract')
        approvers = request.data.get('approvers')  # 审核人列表（可选，团队类型时需要）
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)
        
        import json

        try:
            pro = ProjectRegistration.objects.get(id=id, is_deleted=False)
        except ProjectRegistration.DoesNotExist:
            return Response({'status': 'error', 'message': '立案登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        import datetime

        # 保存原始值用于日志记录
        original_type = pro.type
        original_ContractNo = pro.ContractNo
        try:
            original_responsiblefor = json.loads(pro.responsiblefor) if pro.responsiblefor else {}
        except:
            original_responsiblefor = {}
        original_times = pro.times
        original_charge = pro.charge

        update_fields_list = []

        if contract:
            contract = flies(contract)
            # 将文件URL列表转换为字符串存储（如果有多个URL，用逗号分隔）
            if contract:
                contract_str = contract[0] if len(contract) == 1 else ','.join(contract)
            else:
                contract_str = ""
            pro.contract = contract_str
            update_fields_list.append('contract')

        if times:
            pro.times = times
            update_fields_list.append('times')

        if responsiblefor:
            # 解析承办人信息（支持字符串JSON或字典）
            try:
                if isinstance(responsiblefor, str):
                    responsiblefor_dict = json.loads(responsiblefor)
                else:
                    responsiblefor_dict = responsiblefor
                
                # 验证承办人（responsible_person）必填
                if not responsiblefor_dict.get('responsible_person'):
                    return Response({'status': 'error', 'message': '承办人不能为空', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
                
                # 将字典转换为JSON字符串存储
                responsiblefor_str = json.dumps(responsiblefor_dict, ensure_ascii=False)
                pro.responsiblefor = responsiblefor_str
                update_fields_list.append('responsiblefor')
            except (json.JSONDecodeError, TypeError, AttributeError):
                return Response({'status': 'error', 'message': '承办人信息格式错误，应为字典格式', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        if charge:
            pro.charge = charge
            update_fields_list.append('charge')

        if client_info:
            pro.client_info = client_info
            update_fields_list.append('client_info')

        if party_info:
            pro.party_info = party_info
            update_fields_list.append('party_info')

        if description:
            pro.description = description
            update_fields_list.append('description')

        pro.state = "审核中"
        update_fields_list.append('state')

        # 记录操作前的数据（original_responsiblefor已经是字典格式）
        old_data = {
            'id': pro.id,
            'contract_no': original_ContractNo,
            'type': original_type,
            'responsiblefor': original_responsiblefor if isinstance(original_responsiblefor, dict) else {},
            'times': original_times,
            'charge': original_charge
        }

        if update_fields_list:
            pro.save(update_fields=update_fields_list)

        # 记录操作后的数据
        try:
            current_responsiblefor = json.loads(pro.responsiblefor) if pro.responsiblefor else {}
        except:
            current_responsiblefor = pro.responsiblefor if pro.responsiblefor else {}
        
        new_data = {
            'id': pro.id,
            'contract_no': pro.ContractNo,
            'type': pro.type,
            'responsiblefor': current_responsiblefor,
            'times': pro.times,
            'charge': pro.charge
        }

        today = datetime.datetime.now()
        formatted_date = today.strftime("%Y-%m-%d")
        
        # 获取承办人名称用于审批记录
        if responsiblefor:
            current_responsiblefor = responsiblefor_dict.get('responsible_person', '')
            # 构建承办人信息描述
            responsible_desc = current_responsiblefor
            if responsiblefor_dict.get('main_lawyer'):
                responsible_desc += f"，主办律师：{responsiblefor_dict.get('main_lawyer')}"
            if responsiblefor_dict.get('assistant_lawyer'):
                responsible_desc += f"，助理律师：{responsiblefor_dict.get('assistant_lawyer')}"
            if responsiblefor_dict.get('case_manager_lawyer'):
                responsible_desc += f"，案管律师：{responsiblefor_dict.get('case_manager_lawyer')}"
        else:
            current_responsiblefor = original_responsiblefor.get('responsible_person', '') if isinstance(original_responsiblefor, dict) else ''
            responsible_desc = current_responsiblefor
        
        edit_user = None
        token = request.META.get('token') or request.META.get('HTTP_AUTHORIZATION', '').replace('Bearer ', '')
        if token:
            try:
                edit_user = User.objects.get(token=token, is_deleted=False)
            except User.DoesNotExist:
                pass
        applicant_name = edit_user.username if edit_user else ""
        
        from User.utils import create_approval_with_team_logic
        team_name = get_team_name_from_responsiblefor(responsiblefor_dict if responsiblefor else original_responsiblefor)
        # 利益冲突检索（与创建立项一致）
        related_records_info = conflict_search(
            client_info=pro.client_info,
            party_info=pro.party_info,
            exclude_project_id=pro.id
        )
        conflict_parts = []
        if related_records_info['prefiling_conflicts']:
            conflict_parts.append(f"预立案冲突：{len(related_records_info['prefiling_conflicts'])}条（ID：{','.join([str(r['id']) for r in related_records_info['prefiling_conflicts'][:5]])}{'...' if len(related_records_info['prefiling_conflicts']) > 5 else ''}）")
        if related_records_info['project_conflicts']:
            conflict_parts.append(f"立项冲突：{len(related_records_info['project_conflicts'])}条（合同编号：{','.join([r['ContractNo'] for r in related_records_info['project_conflicts'][:3]])}{'...' if len(related_records_info['project_conflicts']) > 3 else ''}）")
        if related_records_info['bid_conflicts']:
            conflict_parts.append(f"投标冲突：{len(related_records_info['bid_conflicts'])}条（项目：{','.join([(r.get('ProjectName') or '')[:20] for r in related_records_info['bid_conflicts'][:3]])}{'...' if len(related_records_info['bid_conflicts']) > 3 else ''}）")
        conflict_text = "；冲突记录：" + "；".join(conflict_parts) if conflict_parts else ""
        content = current_responsiblefor + "在" + (
                times or original_times) + "办理立项登记，项目类型：" + original_type + ",合同编号：" + original_ContractNo + "描述：" + ",承办人:" + responsible_desc + ",收费情况：" + (charge or original_charge) + "，申请人：" + applicant_name + conflict_text
        approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
            team_name=team_name,
            approvers=approvers,
            title=current_responsiblefor + "立项登记重新编辑",
            content=content,
            approval_type="立项登记",
            user_id=pro.id,
            business_record=pro,
            today=formatted_date,
            applicant=applicant_name
        )
        if approval is None and needs_approval:
            return Response({
                'status': 'error',
                'message': build_missing_approvers_message(team_name, approvers),
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        # 记录操作日志
        log_operation(
            request=request,
            operation_type='UPDATE',
            module='Business',
            action='编辑立项登记',
            target_type='ProjectRegistration',
            target_id=pro.id,
            target_name=pro.ContractNo,
            old_data=old_data,
            new_data=new_data,
            remark=f'编辑立项登记：合同编号 {pro.ContractNo}'
        )

        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class DeleteProject(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除立项登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            pro = ProjectRegistration.objects.get(id=id, is_deleted=False)
        except ProjectRegistration.DoesNotExist:
            return Response({'status': 'error', 'message': '立项登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        # 检查是否已经被案件管理关联
        case_exists = Case.objects.filter(project_id=pro.id, is_deleted=False).exists()

        if case_exists:
            return Response({'status': 'error', 'message': '该立项已被案件管理关联，无法删除', 'code': 1},
                            status=status.HTTP_400_BAD_REQUEST)

        # 记录操作前的数据
        old_data = {
            'id': pro.id,
            'contract_no': pro.ContractNo,
            'type': pro.type,
            'responsiblefor': pro.responsiblefor,
            'client_info': pro.client_info
        }

        # 软删除：更新 is_deleted 字段
        pro.is_deleted = True
        pro.save()

        # 记录操作日志
        log_operation(
            request=request,
            operation_type='DELETE',
            module='Business',
            action='删除立项登记',
            target_type='ProjectRegistration',
            target_id=pro.id,
            target_name=pro.ContractNo,
            old_data=old_data,
            remark=f'删除立项登记：合同编号 {pro.ContractNo}'
        )

        return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)


class BidRegistration(APIView):
    def post(self, request, *args, **kwargs):
        """
            投标登记 - 独立创建，不再关联预立案
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        BiddingUnit = request.data.get('BiddingUnit')
        ProjectName = request.data.get('ProjectName')
        times = request.data.get('times')
        BiddingAnnouncement = request.FILES.getlist('BiddingAnnouncement')
        approvers = request.data.get('approvers')  # 审核人列表（可选，多人团队时需要，推荐：用户ID数组如[1,2,3]，兼容：用户名数组）
        # 兼容旧接口：如果传了 personincharge，转换为 approvers
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)
        
        if not all([BiddingUnit, ProjectName, times]):
            return Response({'status': 'error', 'message': '缺少必填参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        
        import datetime
        
        # 获取当前用户信息（用于团队信息及申请人）
        token = request.META.get('token')
        team_name = None
        user = None
        try:
            user = User.objects.get(token=token, is_deleted=False)
            team_name = user.team
        except User.DoesNotExist:
            pass
        
        bib = Bid.objects.create(
            BiddingUnit=BiddingUnit,
            ProjectName=ProjectName,
            times=times,
            BiddingAnnouncement=json.dumps(flies(BiddingAnnouncement)),
            state="审核中",
        )

        today = datetime.datetime.now()
        formatted_date = today.strftime("%Y-%m-%d")
        
        # 利益冲突检索（与立项相同逻辑）：比对预立案、立项、投标三张表
        conflict_result = conflict_search(bidding_unit=BiddingUnit, exclude_bid_id=bib.id)
        conflict_parts = []
        if conflict_result['prefiling_conflicts']:
            conflict_parts.append(f"预立案冲突：{len(conflict_result['prefiling_conflicts'])}条（ID：{','.join([str(r['id']) for r in conflict_result['prefiling_conflicts'][:5]])}{'...' if len(conflict_result['prefiling_conflicts']) > 5 else ''}）")
        if conflict_result['project_conflicts']:
            conflict_parts.append(f"立项冲突：{len(conflict_result['project_conflicts'])}条（合同编号：{','.join([r['ContractNo'] for r in conflict_result['project_conflicts'][:3]])}{'...' if len(conflict_result['project_conflicts']) > 3 else ''}）")
        if conflict_result['bid_conflicts']:
            conflict_parts.append(f"投标冲突：{len(conflict_result['bid_conflicts'])}条（项目：{','.join([(r.get('ProjectName') or '')[:20] for r in conflict_result['bid_conflicts'][:3]])}{'...' if len(conflict_result['bid_conflicts']) > 3 else ''}）")
        conflict_text = "；冲突记录：" + "；".join(conflict_parts) if conflict_parts else ""
        
        # 使用统一的审核流程函数
        from User.utils import create_approval_with_team_logic
        
        applicant_name = user.username if user else ""
        content = f"项目名称：{ProjectName}，申请日期：{times}，招标单位：{BiddingUnit}，申请人：{applicant_name}{conflict_text}"
        
        approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
            team_name=team_name,
            approvers=approvers,
            title=ProjectName + "投标登记",
            content=content,
            approval_type="投标登记",
            user_id=bib.id,
            business_record=bib,
            today=formatted_date,
            applicant=applicant_name
        )
        
        # 如果返回None且需要审核，说明缺少审核人
        if approval is None and needs_approval:
            return Response({
                'status': 'error',
                'message': build_missing_approvers_message(team_name, approvers),
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        return Response({'message': '登记成功', 'code': 0}, status=status.HTTP_200_OK)


class BidDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        投标登记展示（列表+搜索）
        支持搜索：project_name 项目名称、client_username 招标单位名字、times/end_time 日期范围、keyword 关键词。
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        times = request.data.get('times')
        end_time = request.data.get('end_time')
        # 项目名称：兼容 project_name / projectName
        project_name = (request.data.get('project_name') or request.data.get('projectName') or '').strip()
        # 招标单位名字：变量名 client_username，对应库表字段 BiddingUnit
        client_username = (request.data.get('client_username') or '').strip()
        # 关键词：同时匹配项目名称和招标单位
        keyword = (request.data.get('keyword') or request.data.get('search') or '').strip()

        if not all([page, per_page]):
            return Response({'status': 'error', 'message': '缺少参数 page 或 per_page', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        Q_obj = Q(is_deleted=False)
        if times and end_time:
            Q_obj &= Q(times__gte=times) & Q(times__lte=end_time)
        if project_name:
            Q_obj &= Q(ProjectName__icontains=project_name)
        if client_username:
            Q_obj &= Q(BiddingUnit__icontains=client_username)
        if keyword:
            Q_obj &= (Q(ProjectName__icontains=keyword) | Q(BiddingUnit__icontains=keyword))

        qs = Bid.objects.filter(Q_obj).order_by('-id')
        total = qs.count()

        paginator = Paginator(qs, per_page)
        try:
            user_agents_page = paginator.page(int(page))
        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)

        data = []
        for info in user_agents_page.object_list:
            data.append({
                "id": info.id,
                "times": info.times,
                "BiddingUnit": info.BiddingUnit,
                "ProjectName": info.ProjectName,
                "BiddingAnnouncement": info.BiddingAnnouncement,
                "state": info.state,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditBid(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑投标登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        BiddingUnit = request.data.get('BiddingUnit')
        ProjectName = request.data.get('ProjectName')
        times = request.data.get('times')
        BiddingAnnouncement = request.FILES.getlist('BiddingAnnouncement')
        approvers = request.data.get('approvers')
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)

        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            bid = Bid.objects.get(id=id, is_deleted=False)
        except Bid.DoesNotExist:
            return Response({'status': 'error', 'message': '投标登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        if BiddingUnit:
            bid.BiddingUnit = BiddingUnit
            bid.save(update_fields=['BiddingUnit'])
        if ProjectName:
            bid.ProjectName = ProjectName
            bid.save(update_fields=['ProjectName'])
        if times:
            bid.times = times
            bid.save(update_fields=['times'])
        if BiddingAnnouncement:
            bid.BiddingAnnouncement = json.dumps(flies(BiddingAnnouncement))
            bid.save(update_fields=['BiddingAnnouncement'])

        if approvers:
            import datetime
            today = datetime.datetime.now()
            formatted_date = today.strftime("%Y-%m-%d")
            team_name = None
            edit_user = None
            token = request.META.get('token')
            if token:
                try:
                    edit_user = User.objects.get(token=token, is_deleted=False)
                    team_name = edit_user.team
                except User.DoesNotExist:
                    team_name = None
            from User.utils import create_approval_with_team_logic
            applicant_name = edit_user.username if edit_user else ""
            # 利益冲突检索（与创建投标一致，按招标单位）
            conflict_result = conflict_search(bidding_unit=bid.BiddingUnit, exclude_bid_id=bid.id)
            conflict_parts = []
            if conflict_result['prefiling_conflicts']:
                conflict_parts.append(f"预立案冲突：{len(conflict_result['prefiling_conflicts'])}条（ID：{','.join([str(r['id']) for r in conflict_result['prefiling_conflicts'][:5]])}{'...' if len(conflict_result['prefiling_conflicts']) > 5 else ''}）")
            if conflict_result['project_conflicts']:
                conflict_parts.append(f"立项冲突：{len(conflict_result['project_conflicts'])}条（合同编号：{','.join([r['ContractNo'] for r in conflict_result['project_conflicts'][:3]])}{'...' if len(conflict_result['project_conflicts']) > 3 else ''}）")
            if conflict_result['bid_conflicts']:
                conflict_parts.append(f"投标冲突：{len(conflict_result['bid_conflicts'])}条（项目：{','.join([(r.get('ProjectName') or '')[:20] for r in conflict_result['bid_conflicts'][:3]])}{'...' if len(conflict_result['bid_conflicts']) > 3 else ''}）")
            conflict_text = "；冲突记录：" + "；".join(conflict_parts) if conflict_parts else ""
            content_edit = f"项目名称：{bid.ProjectName}，申请日期：{times or bid.times}，申请人：{applicant_name}{conflict_text}"
            approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
                team_name=team_name,
                approvers=approvers,
                title=bid.ProjectName + "投标登记重新编辑",
                content=content_edit,
                approval_type="投标登记",
                user_id=bid.id,
                business_record=bid,
                today=formatted_date,
                applicant=applicant_name
            )
            if approval is None and needs_approval:
                return Response({
                    'status': 'error',
                    'message': build_missing_approvers_message(team_name, approvers),
                    'code': 1
                }, status=status.HTTP_400_BAD_REQUEST)

        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class DeleteBid(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除投标登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            bid = Bid.objects.get(id=id, is_deleted=False)
        except Bid.DoesNotExist:
            return Response({'status': 'error', 'message': '投标登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        # 记录操作前的数据
        old_data = {
            'id': bid.id,
            'project_name': bid.ProjectName,
            'times': bid.times
        }

        # 软删除：更新 is_deleted 字段
        bid.is_deleted = True
        bid.save()

        # 记录操作日志
        log_operation(
            request=request,
            operation_type='DELETE',
            module='Business',
            action='删除投标登记',
            target_type='Bid',
            target_id=bid.id,
            target_name=bid.ProjectName,
            old_data=old_data,
            remark=f'删除投标登记：{bid.ProjectName}'
        )

        return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)


class caseManagement(APIView):
    def post(self, request, *args, **kwargs):
        """
        补充案件资料（立项审批通过即成案件，本接口用于创建/补充案件材料）
        - 立项审批通过后，用本接口补充合同返还、结案申请等资料。
        - 首次调用（该立项尚无案件）：创建案件，立案时间 = 立项审批通过时间（无则用请求 times 或当前日期）。
        - 再次调用（该立项已有案件）：仅更新/补充材料，不修改立案时间。
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        project_id = request.data.get('project_id')  # 立项登记ID
        times = request.data.get('times')  # 立案时间（仅当无审批通过时间时使用）
        Contractreturn = request.FILES.getlist('Contractreturn')
        Closingapplication = request.FILES.getlist('Closingapplication')
        invoice_status = request.data.get('invoice_status')  # 已开票
        paymentcollection = request.data.get('paymentcollection')
        tag_ids = request.data.get('tag_ids')  # 标签ID列表（数组或逗号分隔的字符串）

        approvers = request.data.get('approvers')
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)

        # 检查是否已立项
        if not project_id:
            return Response({'status': 'error', 'message': '缺少参数project_id（立项登记ID）', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        # 使用事务和行级锁防止并发重复创建
        try:
            with transaction.atomic():
                # 使用 select_for_update 锁定立项登记记录，防止并发问题
                project_registration = ProjectRegistration.objects.select_for_update().get(id=project_id, is_deleted=False)
                
                # 再次检查是否已经存在案件（在锁内检查，防止并发重复创建）
                case = Case.objects.filter(project_id=project_id, is_deleted=False).first()
                if not case:
                    # 立案时间：优先取立项审批通过时间，否则用请求 times 或当前日期
                    project_approval = Approval.objects.filter(
                        type='立项登记', user_id=str(project_id), state='已通过', is_deleted=False
                    ).order_by('-id').first()
                    if project_approval and getattr(project_approval, 'completeTiem', None):
                        filing_time = project_approval.completeTiem.strftime('%Y-%m-%d')
                    else:
                        filing_time = times if times else datetime.now().strftime('%Y-%m-%d')

                    # 处理材料：上传后存储URL列表（代理合同字段已从案件管理移除，创建时存空）
                    contract_return_list = flies(Contractreturn)
                    closing_application_list = flies(Closingapplication)

                    project_contract_no = project_registration.ContractNo if project_registration else None
                    project_type = project_registration.type if project_registration else None
                    project_client_name = project_registration.client_info if project_registration else None
                    project_party_name = project_registration.party_info if project_registration else None
                    project_description = project_registration.description if project_registration else None
                    project_responsiblefor = project_registration.responsiblefor if project_registration else None
                    project_charge = project_registration.charge if project_registration else None
                    # 创建新案件（立案时间 = 审批通过时间）
                    case_id = Case.objects.create(
                        project_id=project_id,
                        contract_no=project_contract_no,
                        project_type=project_type,
                        client_name=project_client_name,
                        party_name=project_party_name,
                        project_description=project_description,
                        responsiblefor=project_responsiblefor,
                        charge=project_charge,
                        times=filing_time,
                        AgencyContract=json.dumps([], ensure_ascii=False),  # 代理合同已从案件管理移除，库字段保留
                        Contractreturn=json.dumps(contract_return_list, ensure_ascii=False),
                        Closingapplication=json.dumps(closing_application_list, ensure_ascii=False),
                        ChangeRequest="",
                        invoice_status=normalize_amount_value(invoice_status),
                        paymentcollection=normalize_amount_value(paymentcollection),
                        state="审核中"
                    )

                    from User.utils import create_approval_with_team_logic
                    team_name = get_team_name_from_responsiblefor(project_registration.responsiblefor)
                    approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
                        team_name=team_name,
                        approvers=approvers,
                        title="案件管理信息提交",
                        content=build_case_approval_content(project_registration, filing_time),
                        approval_type="案件管理",
                        user_id=case_id.id,
                        business_record=case_id,
                        today=filing_time
                    )
                    if approval is None and needs_approval:
                        return Response({
                            'status': 'error',
                            'message': build_missing_approvers_message(team_name, approvers),
                            'code': 1
                        }, status=status.HTTP_400_BAD_REQUEST)
                    
                    # 处理标签关联
                    if tag_ids:
                        try:
                            # 支持数组或逗号分隔的字符串
                            if isinstance(tag_ids, str):
                                if ',' in tag_ids:
                                    tag_id_list = [int(x.strip()) for x in tag_ids.split(',') if x.strip()]
                                else:
                                    tag_id_list = [int(tag_ids)]
                            elif isinstance(tag_ids, list):
                                tag_id_list = [int(x) for x in tag_ids if x]
                            else:
                                tag_id_list = []
                            
                            # 验证标签是否存在
                            valid_tags = CaseTag.objects.filter(id__in=tag_id_list, is_deleted=False)
                            case_id.tags.set(valid_tags)
                        except (ValueError, TypeError) as e:
                            # 标签ID格式错误，但不影响案件创建，只记录警告
                            pass
                    
                    # 创建成功，直接返回
                    return Response({'message': '创建成功', 'code': 0}, status=status.HTTP_200_OK)
                # 如果已存在，事务结束，在事务外处理更新逻辑
                    
        except ProjectRegistration.DoesNotExist:
            return Response({'status': 'error', 'message': '该立项登记不存在或已删除，请先完成立项登记', 'code': 1}, 
                          status=status.HTTP_400_BAD_REQUEST)

        # 如果代码执行到这里，说明案件已存在，需要执行更新逻辑
        # 注意：这里不需要再次锁定，因为更新操作不会造成重复创建问题
        case = Case.objects.filter(project_id=project_id, is_deleted=False).first()
        if not case:
            # 这种情况理论上不应该发生，因为事务内已检查，但为了安全起见
            return Response({'status': 'error', 'message': '案件不存在', 'code': 1}, 
                          status=status.HTTP_400_BAD_REQUEST)
            
        # 执行更新逻辑（代理合同已从案件管理移除，不再接收或更新）
        update_fields_list = []
        if times:
            case.times = times
            update_fields_list.append('times')

        if Contractreturn:
            case.Contractreturn = json.dumps(flies(Contractreturn), ensure_ascii=False)
            update_fields_list.append('Contractreturn')

        if Closingapplication:
            case.Closingapplication = json.dumps(flies(Closingapplication), ensure_ascii=False)
            update_fields_list.append('Closingapplication')

        if paymentcollection is not None:
            case.paymentcollection = normalize_amount_value(paymentcollection)
            update_fields_list.append('paymentcollection')

        if invoice_status is not None:
            case.invoice_status = normalize_amount_value(invoice_status)
            update_fields_list.append('invoice_status')

        if update_fields_list:
            case.save(update_fields=update_fields_list)

        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class CaseAttachmentUpload(APIView):
    def post(self, request, *args, **kwargs):
        """
        案件材料上传（合同返还/结案申请）
        通过 type 指定上传类型，返回文件URL列表
        """
        upload_type = request.data.get('type')
        files = request.FILES.getlist('file') or request.FILES.getlist('files')

        allowed_types = ["Contractreturn", "Closingapplication"]
        if upload_type not in allowed_types:
            return Response({
                'status': 'error',
                'message': f'type参数错误，支持类型：{", ".join(allowed_types)}',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        if not files:
            return Response({'status': 'error', 'message': '请上传文件', 'code': 1},
                            status=status.HTTP_400_BAD_REQUEST)

        file_urls = flies(files)
        return Response({
            'message': '上传成功',
            'code': 0,
            'data': {
                'type': upload_type,
                'files': file_urls
            }
        }, status=status.HTTP_200_OK)


class CaseAttachmentUpdate(APIView):
    def post(self, request, *args, **kwargs):
        """
        案件材料更新（合同返还/结案申请）
        通过 type 指定更新哪一种材料
        """
        case_id = request.data.get('case_id')
        upload_type = request.data.get('type')
        files = request.FILES.getlist('file') or request.FILES.getlist('files')
        Contractreturn = request.data.get('Contractreturn')
        approvers = request.data.get('approvers')
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)

        if not case_id:
            return Response({'status': 'error', 'message': '缺少参数case_id', 'code': 1},
                            status=status.HTTP_400_BAD_REQUEST)

        allowed_types = ["Contractreturn", "Closingapplication","AgencyContract"]
        if upload_type not in allowed_types:
            return Response({
                'status': 'error',
                'message': f'type参数错误，支持类型：{", ".join(allowed_types)}',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        # if not files:
        #     return Response({'status': 'error', 'message': '请上传文件', 'code': 1},
        #                     status=status.HTTP_400_BAD_REQUEST)

        try:
            case = Case.objects.get(id=case_id, is_deleted=False)
        except Case.DoesNotExist:
            return Response({'status': 'error', 'message': '案件不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        file_urls = flies(files)
        update_fields = []

        if upload_type == "Contractreturn":
            case.Contractreturn = Contractreturn
            update_fields = ['Contractreturn']
        elif upload_type == "Closingapplication":
            # 结案申请需要审批通过后才更新 Case.Closingapplication 字段
            # 这里不直接更新，文件URL保存在 Schedule.remark 中，审批通过后再更新到 Case
            pass
        elif upload_type == "AgencyContract":
            case.AgencyContract = json.dumps(file_urls, ensure_ascii=False)
            update_fields = ['AgencyContract']

        if update_fields:
            case.save(update_fields=update_fields)

        # 结案申请：加入审批流程（独立于“案件管理”审批，避免覆盖 Case.approvers_order / Case.state）
        if upload_type == "Closingapplication":  # 审批通过后才更新 Case.Closingapplication 字段
            try:
                token = request.META.get('token')
                submitter = User.objects.get(token=token, is_deleted=False)
            except Exception:
                submitter = None

            # 以 Schedule 作为承载对象，复用统一审批流
            try:
                from datetime import date
                today = date.today().strftime("%Y-%m-%d")
                contract_no = case.contract_no or ""
                title = f"结案申请（合同号：{contract_no or ('案件#' + str(case.id))}）"
                remark = json.dumps({
                    "case_id": case.id,
                    "contract_no": contract_no,
                    "closing_application_files": file_urls
                }, ensure_ascii=False)

                schedule = Schedule.objects.create(
                    title=title,
                    tiems=today,
                    end_time=today,
                    remark=remark,
                    state="未完成",
                    submit=submitter.username if submitter else None
                )

                from User.utils import create_approval_with_team_logic
                team_name = submitter.team if submitter else None
                content = f"{submitter.username if submitter else '系统'}提交了结案申请，合同号：{contract_no or ('案件#' + str(case.id))}"
                approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
                    team_name=team_name,
                    approvers=approvers,
                    title="结案申请审批",
                    content=content,
                    approval_type="结案申请",
                    user_id=schedule.id,
                    business_record=schedule,
                    today=today,
                    applicant=submitter.username if submitter else None  # 传入申请人，用于"待查看"流程
                )

                if approval is None and needs_approval:
                    return Response({
                        'status': 'error',
                        'message': build_missing_approvers_message(team_name, approvers),
                        'code': 1
                    }, status=status.HTTP_400_BAD_REQUEST)
            except Exception as e:
                # 不影响材料更新主流程，但记录错误信息
                import logging
                logger = logging.getLogger(__name__)
                logger.error(f"结案申请审批创建失败(case_id={case.id}): {str(e)}")

        return Response({
            'message': '更新成功',
            'code': 0,
            'data': {
                'case_id': case.id,
                'type': upload_type,
                'files': file_urls
            }
        }, status=status.HTTP_200_OK)


class caseManagementDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        案件管理版块展示
        搜索支持按标签：传 tags（标签名称，模糊匹配）或 tag_ids（标签ID列表/逗号分隔，匹配拥有任一标签的案件），可同时使用。
        :param request: page, per_page 必填；可选 times, end_time, type, contract_no, party_name, client_name, tags, tag_ids
        :return:
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        times = request.data.get('times')
        end_time = request.data.get('end_time')
        type = request.data.get('type')
        serialnumber = request.data.get('contract_no')
        party_name = request.data.get('party_name')
        client_name = request.data.get('client_name')
        tags = request.data.get('tags')  # 标签：传字符串为名称模糊匹配，传数组 [2,3] 为标签ID列表
        tag_ids = request.data.get('tag_ids')  # 标签ID列表（与 tags 传 ID 时等效）
        if not all([page, per_page]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        Q_obj = Q()
        if times and end_time:
            Q_obj &= Q(times__gte=times) & Q(times__lte=end_time)

        if type:
            por_id = ProjectRegistration.objects.filter(type=type, is_deleted=False).values_list('id', flat=True)
            Q_obj &= Q(project_id__in=por_id)

        if serialnumber:
            Q_obj &= Q(contract_no__icontains=serialnumber)
        if party_name:
            Q_obj &= Q(party_name__icontains=party_name)
        if client_name:
            Q_obj &= Q(client_name__icontains=client_name)
        # 按标签搜索：tags 可为字符串(名称模糊)、数组(标签ID)、或 form 传来的字符串 "[2]"；tag_ids 为标签ID列表；满足任一标签即匹配
        tag_id_list = []
        if tags is not None and tags != '':
            if isinstance(tags, list):
                try:
                    tag_id_list.extend([int(x) for x in tags if x is not None and str(x).strip() != ''])
                except (ValueError, TypeError):
                    pass
            elif isinstance(tags, str):
                tags_stripped = tags.strip()
                # 前端 form-data 可能把 [2] 或 [2,3] 当成字符串传，先尝试按 JSON 数组解析
                if tags_stripped.startswith('[') and tags_stripped.endswith(']'):
                    try:
                        parsed = json.loads(tags_stripped)
                        if isinstance(parsed, list):
                            tag_id_list.extend([int(x) for x in parsed if x is not None and str(x).strip() != ''])
                    except (ValueError, TypeError, json.JSONDecodeError):
                        pass
                if not tag_id_list:
                    tag_id_list.extend(
                        CaseTag.objects.filter(name__icontains=tags, is_deleted=False).values_list('id', flat=True)
                    )
        if tag_ids:
            try:
                if isinstance(tag_ids, str):
                    tag_id_list.extend([int(x.strip()) for x in tag_ids.split(',') if x.strip()])
                elif isinstance(tag_ids, list):
                    tag_id_list.extend([int(x) for x in tag_ids if x is not None and str(x).strip() != ''])
            except (ValueError, TypeError):
                pass
        tag_id_list = list(set(tag_id_list))
        if tag_id_list:
            Q_obj &= Q(tags__in=tag_id_list)

        pre = Case.objects.filter(Q_obj, is_deleted=False).order_by('-id')
        if tag_id_list:
            pre = pre.distinct()
        total = len(pre)

        paginator = Paginator(pre, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        
        # 导入财务模型，用于统计开票金额和收入确认金额
        from finance.models import Invoice as FinanceInvoice, Income
        
        # 收集所有合同号，用于批量查询财务数据
        case_list = list(user_agents_page.object_list)
        contract_nos = []
        case_contract_map = {}  # 案件ID -> 合同号的映射
        
        for info in case_list:
            pro = None
            if info.project_id:
                try:
                    pro = ProjectRegistration.objects.get(id=info.project_id, is_deleted=False)
                except ProjectRegistration.DoesNotExist:
                    pro = None
            
            contract_no = info.contract_no or (pro.ContractNo if pro else None)
            if contract_no:
                contract_nos.append(contract_no)
                case_contract_map[info.id] = contract_no
        
        # 批量查询开票金额（按合同号统计）
        invoice_amounts = {}  # 合同号 -> 总开票金额
        if contract_nos:
            # 查询所有未删除的开票记录（一次性查询，避免N+1问题）
            invoices = FinanceInvoice.objects.filter(
                ContractNo__in=contract_nos,
                is_deleted=False
            ).values('ContractNo', 'amount')
            
            # 计算每个合同号的总开票金额（需要解析金额字符串）
            for invoice in invoices:
                contract_no = invoice['ContractNo']
                amount_str = normalize_amount_value(invoice['amount'])
                try:
                    amount = float(amount_str)
                except (ValueError, TypeError):
                    amount = 0.0
                
                if contract_no in invoice_amounts:
                    invoice_amounts[contract_no] = str(float(invoice_amounts[contract_no]) + amount)
                else:
                    invoice_amounts[contract_no] = str(amount)
        
        # 批量查询收入确认金额（按合同号统计，只统计审核通过的）
        income_amounts = {}  # 合同号 -> 总收入确认金额
        if contract_nos:
            # 查询所有未删除且审核通过的收入确认记录（一次性查询，避免N+1问题）
            # 只统计 state="已通过" 的记录
            incomes = Income.objects.filter(
                ContractNo__in=contract_nos,
                is_deleted=False,
                state="已通过"  # 只统计审核通过的收入确认
            ).values('ContractNo', 'amount')
            
            # 计算每个合同号的总收入确认金额
            for income in incomes:
                contract_no = income['ContractNo']
                amount_str = normalize_amount_value(income['amount'])
                try:
                    amount = float(amount_str)
                except (ValueError, TypeError):
                    amount = 0.0
                
                if contract_no in income_amounts:
                    income_amounts[contract_no] = str(float(income_amounts[contract_no]) + amount)
                else:
                    income_amounts[contract_no] = str(amount)
        
        data = []
        for info in case_list:
            pro = None
            if info.project_id:
                try:
                    pro = ProjectRegistration.objects.get(id=info.project_id, is_deleted=False)
                except ProjectRegistration.DoesNotExist:
                    pro = None

            contract_no = info.contract_no or (pro.ContractNo if pro else None)
            project_type = info.project_type or (pro.type if pro else None)
            client_name = info.client_name or (pro.client_info if pro else None)
            party_name = info.party_name or (pro.party_info if pro else None)
            project_description = info.project_description or (pro.description if pro else None)
            responsiblefor_raw = info.responsiblefor or (pro.responsiblefor if pro else None)
            charge = info.charge or (pro.charge if pro else None)

            # 解析负责人信息（JSON字符串转字典）
            try:
                responsiblefor_dict = json.loads(responsiblefor_raw) if responsiblefor_raw else {}
            except (json.JSONDecodeError, TypeError):
                responsiblefor_dict = responsiblefor_raw if responsiblefor_raw else {}

            # 解析结案申请（JSON字符串转列表）；代理合同已从案件管理移除，不再返回
            try:
                closing_application_list = json.loads(info.Closingapplication) if info.Closingapplication else []
            except (json.JSONDecodeError, TypeError):
                closing_application_list = []
            
            if not closing_application_list:
                closing_application_list = ""
            
            contractreturn_str = info.Contractreturn or ""
            if contractreturn_str.strip() in ["[]", ""]:
                contractreturn_str = ""
            
            closing_application_str = info.Closingapplication or ""
            if closing_application_str.strip() in ["[]", ""]:
                closing_application_str = ""
            
            # 从财务数据动态获取开票金额和收入确认金额
            invoice_status_value = "0"
            paymentcollection_value = "0"
            
            if contract_no:
                # 从财务数据获取开票金额
                invoice_status_value = invoice_amounts.get(contract_no, "0")
                # 从财务数据获取收入确认金额
                paymentcollection_value = income_amounts.get(contract_no, "0")
            else:
                # 如果没有合同号，使用Case表中的旧数据（向后兼容）
                invoice_status_value = normalize_amount_value(info.invoice_status)
                paymentcollection_value = normalize_amount_value(info.paymentcollection)
            
            # 获取案件标签
            tags = info.tags.filter(is_deleted=False)
            tag_list = []
            for tag in tags:
                tag_list.append({
                    'id': tag.id,
                    'name': tag.name,
                    'color': tag.color
                })
            
            # 如果没有标签，返回空字符串而不是空数组
            tags_value = tag_list if tag_list else ""
            tag_ids_value = [tag['id'] for tag in tag_list] if tag_list else ""
            
            # 如果没有负责人信息，返回空字符串而不是空字典
            # 检查 responsiblefor_dict 是否为有效的非空字典
            if responsiblefor_dict and isinstance(responsiblefor_dict, dict) and len(responsiblefor_dict) > 0:
                responsiblefor_value = responsiblefor_dict
            else:
                responsiblefor_value = ""
            
            data.append({
                "id": info.id,
                "ContractNo": contract_no or "",  # 合同编号
                "type": project_type or "",  # 项目类型
                "client_info": client_name or "",  # 客户名称（委托人身份信息）
                "party_info": party_name or "",  # 相对方名称
                "description": project_description or "",  # 项目简述（没有数据时返回空字符串）
                "responsiblefor": responsiblefor_value,  # 负责人信息（字典格式，没有数据时返回空字符串）
                "charge": charge or "",  # 收费情况（没有数据时返回空字符串）
                'times': info.times or "",  # 立案时间（没有数据时返回空字符串）
                "Contractreturn": contractreturn_str,  # 合同返还（没有数据时返回空字符串）
                "Closingapplication": closing_application_str,  # 结案申请（JSON字符串，没有文件时返回空字符串）
                "ClosingapplicationUrls": closing_application_list if closing_application_list else "",  # 结案申请（URL列表，没有文件时返回空字符串）
                "ChangeRequest": info.ChangeRequest or "",  # 变更申请（兼容旧字段，没有数据时返回空字符串）
                "ChangeItem": info.ChangeItem or "",  # 变更事项（没有数据时返回空字符串）
                "ChangeReason": info.ChangeReason or "",  # 变更原因（没有数据时返回空字符串）
                "ChangeAgreement": info.ChangeAgreement or "",  # 变更协议（没有数据时返回空字符串）
                "invoice_status": invoice_status_value or "0",  # 已开票（从财务数据动态计算，没有数据时返回"0"）
                "paymentcollection": paymentcollection_value or "0",  # 已收款（从财务数据动态计算，没有数据时返回"0"）
                "state": info.state or "",  # 状态（没有数据时返回空字符串）
                "project_id": info.project_id if info.project_id is not None else "",  # 项目ID（没有数据时返回空字符串）
                "tags": tags_value,  # 标签列表（没有数据时返回空字符串）
                "tag_ids": tag_ids_value,  # 标签ID列表（没有数据时返回空字符串）
                "AgencyContract":info.AgencyContract
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditCase(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑案件管理
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        times = request.data.get('times')
        Contractreturn = request.FILES.getlist('Contractreturn')
        Closingapplication = request.FILES.getlist('Closingapplication')
        invoice_status = request.data.get('invoice_status')  # 已开票
        paymentcollection = request.data.get('paymentcollection')
        tag_ids = request.data.get('tag_ids')  # 标签ID列表（数组或逗号分隔的字符串）
        approvers = request.data.get('approvers')
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)

        # 检查不可修改的参数（前端不会传入，但作为安全措施进行检查）
        forbidden_params = []
        if 'project_id' in request.data:
            forbidden_params.append('project_id')

        if forbidden_params:
            return Response({
                'status': 'error',
                'message': f'以下参数不允许修改: {", ".join(forbidden_params)}',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        if not id:
            return Response({'status': 'error', 'message': '缺少参数id', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            case = Case.objects.get(id=id, is_deleted=False)
        except Case.DoesNotExist:
            return Response({'status': 'error', 'message': '案件管理不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        update_fields_list = []

        if times:
            case.times = times
            update_fields_list.append('times')

        if Contractreturn:
            case.Contractreturn = json.dumps(flies(Contractreturn), ensure_ascii=False)
            update_fields_list.append('Contractreturn')

        if Closingapplication:
            case.Closingapplication = json.dumps(flies(Closingapplication), ensure_ascii=False)
            update_fields_list.append('Closingapplication')

        if paymentcollection is not None:
            case.paymentcollection = normalize_amount_value(paymentcollection)
            update_fields_list.append('paymentcollection')

        if invoice_status is not None:
            case.invoice_status = normalize_amount_value(invoice_status)
            update_fields_list.append('invoice_status')

        if update_fields_list:
            case.save(update_fields=update_fields_list)
        
        # 处理标签更新
        if tag_ids is not None:
            try:
                # 支持数组或逗号分隔的字符串
                if isinstance(tag_ids, str):
                    if tag_ids.strip() == '':
                        tag_id_list = []
                    elif ',' in tag_ids:
                        tag_id_list = [int(x.strip()) for x in tag_ids.split(',') if x.strip()]
                    else:
                        tag_id_list = [int(tag_ids)]
                elif isinstance(tag_ids, list):
                    tag_id_list = [int(x) for x in tag_ids if x]
                else:
                    tag_id_list = []
                
                # 验证标签是否存在并更新关联
                valid_tags = CaseTag.objects.filter(id__in=tag_id_list, is_deleted=False)
                case.tags.set(valid_tags)
            except (ValueError, TypeError) as e:
                # 标签ID格式错误，但不影响案件更新
                pass

        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class DeleteCase(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除案件管理
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            case = Case.objects.get(id=id, is_deleted=False)
        except Case.DoesNotExist:
            return Response({'status': 'error', 'message': '案件管理不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        # 记录操作前的数据
        old_data = {
            'id': case.id,
            'times': case.times,
            'state': case.state
        }

        # 软删除：更新 is_deleted 字段
        case.is_deleted = True
        case.save()

        # 记录操作日志
        log_operation(
            request=request,
            operation_type='DELETE',
            module='Business',
            action='删除案件管理',
            target_type='Case',
            target_id=case.id,
            target_name=f'案件-{case.id}',
            old_data=old_data,
            remark=f'删除案件管理：ID {case.id}'
        )

        return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)


class Uploadinvoice(APIView):
    def post(self, request, *args, **kwargs):
        """案件管理发票 - 关联案件"""
        case_id = request.data.get('case_id')  # 案件ID
        amount = request.data.get('amount')
        file = request.FILES.getlist('file')
        if not case_id:
            return Response({'status': 'error', 'message': '缺少参数case_id', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        # 检查案件是否存在
        try:
            case = Case.objects.get(id=case_id, is_deleted=False)
        except Case.DoesNotExist:
            return Response({'status': 'error', 'message': '案件不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)

        Invoice.objects.create(
            case_id=case_id,
            amount=amount,
            file=json.dumps(flies(file)),
        )
        return Response({'message': '上传成功', 'code': 0}, status=status.HTTP_200_OK)


class InvoiceDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        发票展示 - 关联案件
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        case_id = request.data.get('case_id')  # 案件ID
        if not case_id:
            return Response({'status': 'error', 'message': '缺少参数case_id', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        invoices = Invoice.objects.filter(case_id=case_id, is_deleted=False)
        data = []
        for invoice in invoices:
            data.append({
                "id": invoice.id,
                "amount": invoice.amount,
                "file": invoice.file,
            })
        return Response({'message': '展示成功', 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class Log(APIView):
    def post(self, request, *args, **kwargs):
        """
        案件日志 - 关联案件
        """
        token = request.META.get('token')
        # 明确拒绝 user_id 参数（此接口使用案件ID，不再使用预立案ID）
        if 'user_id' in request.data:
            return Response({'status': 'error', 'message': '此接口不需要 user_id 参数，请使用 case_id（案件ID）', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        
        case_id = request.data.get('case_id')  # 案件ID
        content = request.data.get('content')
        file = request.FILES.getlist('file')

        if not all([case_id, content]):
            return Response({'status': 'error', 'message': '缺少参数case_id或content', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        
        # 检查案件是否存在
        try:
            case = Case.objects.get(id=case_id, is_deleted=False)
        except Case.DoesNotExist:
            return Response({'status': 'error', 'message': '案件不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)
        
        user = User.objects.get(token=token, is_deleted=False)
        now = datetime.now()
        date_str = now.strftime('%Y-%m-%d')
        Caselog.objects.create(
            case_id=case_id,
            content=content,
            file=json.dumps(flies(file)),
            times=date_str,
            username=user.username,
        )
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)


class LogDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        案件日志展示（按案件ID查询）
        必填参数：case_id（案件ID）、page、per_page
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        case_id = request.data.get('case_id')  # 案件ID（必填）
        if not all([page, per_page]):
            return Response({'status': 'error', 'message': '缺少参数page或per_page', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        if not case_id:
            return Response({'status': 'error', 'message': '缺少参数case_id（案件ID）', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        # 根据案件ID过滤日志
        pre = Caselog.objects.filter(is_deleted=False, case_id=case_id)
        total = pre.count()

        paginator = Paginator(pre, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        for info in user_agents_page.object_list:
            data.append({
                "id": info.id,
                "case_id": info.case_id if info.case else None,  # 案件ID
                "content": info.content,  # 日志内容
                "times": info.times,  # 时间
                "username": info.username,  # 提交人（保留兼容性）
                "recorder": info.username,  # 记录人
                "file": info.file,  # 文件
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class accumulate(APIView):
    def post(self, request, *args, **kwargs):
        """
        累加 - 关联案件
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        case_id = request.data.get('case_id')  # 案件ID
        paymentcollection = request.data.get('paymentcollection')
        if not case_id:
            return Response({'status': 'error', 'message': '缺少参数case_id', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        
        try:
            case = Case.objects.get(id=case_id, is_deleted=False)
        except Case.DoesNotExist:
            return Response({'status': 'error', 'message': '案件不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)
        
        current_amount_str = normalize_amount_value(case.paymentcollection)
        add_amount_str = normalize_amount_value(paymentcollection)
        try:
            current_amount = Decimal(current_amount_str)
        except InvalidOperation:
            current_amount = Decimal("0")
        try:
            add_amount = Decimal(add_amount_str)
        except InvalidOperation:
            add_amount = Decimal("0")
        case.paymentcollection = str(current_amount + add_amount)
        case.save(update_fields=['paymentcollection'])

        return Response({'message': '成功', 'code': 0}, status=status.HTTP_200_OK)


class preFilingLinkedCases(APIView):
    def post(self, request, *args, **kwargs):
        """
        立项登记列表接口（用于新增案件）
        权限：管理员可见全部；承办人仅可见自己承办的立项。
        返回可以用于新增案件的立项登记列表，排除已有案件的立项登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        pre_qs, err = _get_project_registration_queryset_by_permission(request)
        if err is not None:
            return err
        case_project_ids = Case.objects.filter(is_deleted=False).values_list('project_id', flat=True)
        projects = pre_qs.exclude(id__in=case_project_ids)

        data = []
        for project in projects:
            data.append({
                "id": project.id,
                "ContractNo": project.ContractNo,
                "type": project.type,
                "client_info": project.client_info,
                "party_info": project.party_info,
                "description": project.description,
            })

        return Response({'message': '展示成功', 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class ProjectDropdownList(APIView):
    """获取成功立项的下拉列表接口"""
    def post(self, request, *args, **kwargs):
        """
        获取已通过审核的立项登记列表（用于下拉选择）
        权限：管理员可见全部；承办人仅可见自己承办的立项。
        返回成功立项的数据，格式简洁，适合下拉列表使用
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        # 权限过滤：管理员全部，承办人只看自己承办的
        pre_qs, err = _get_project_registration_queryset_by_permission(request)
        if err is not None:
            return err
        # 已通过审核的立项
        projects = pre_qs.filter(state="已通过").order_by('-id')
        
        # 可选参数：是否排除已有案件的立项
        exclude_has_case = request.data.get('exclude_has_case', False)
        if exclude_has_case:
            case_project_ids = Case.objects.filter(is_deleted=False).values_list('project_id', flat=True)
            projects = projects.exclude(id__in=case_project_ids)
        
        data = []
        import json
        for project in projects:
            # 解析承办人信息（原 responsible_person 即承办人）
            responsible_person = ""
            try:
                responsiblefor_dict = json.loads(project.responsiblefor) if project.responsiblefor else {}
                if isinstance(responsiblefor_dict, dict):
                    responsible_person = responsiblefor_dict.get('responsible_person', '')
            except (json.JSONDecodeError, TypeError):
                pass
            
            display_text = f"{project.ContractNo}"
            if project.type:
                display_text += f" - {project.type}"
            if responsible_person:
                display_text += f" ({responsible_person})"
            
            data.append({
                "id": project.id,
                "value": project.id,
                "label": display_text,
                "ContractNo": project.ContractNo,
                "type": project.type,
                "client_info": project.client_info,
                "party_info": project.party_info,
                "description": project.description,
                "responsible_person": responsible_person,  # 承办人（保留字段名兼容）
                "times": project.times,
            })

        return Response({
            'message': '查询成功', 
            'data': data, 
            'total': len(data),
            'code': 0
        }, status=status.HTTP_200_OK)


class CaseDropdownList(APIView):
    """获取案件的下拉列表接口"""
    def post(self, request, *args, **kwargs):
        """
        获取案件列表（用于下拉选择）
        返回案件数据，格式简洁，适合下拉列表使用。
        可选按标签筛选：传 tags（字符串为名称模糊，数组如 [2,3] 为标签ID）或 tag_ids，匹配拥有任一标签的案件。
        :param request: 可选 state, tags, tag_ids
        :return:
        """
        state_filter = request.data.get('state', None)
        tags = request.data.get('tags')  # 字符串=名称模糊，数组=标签ID如 [2,3]
        tag_ids = request.data.get('tag_ids')
        
        Q_obj = Q(is_deleted=False)
        if state_filter:
            Q_obj &= Q(state=state_filter)
        
        tag_id_list = []
        if tags is not None and tags != '':
            if isinstance(tags, list):
                try:
                    tag_id_list.extend([int(x) for x in tags if x is not None and str(x).strip() != ''])
                except (ValueError, TypeError):
                    pass
            elif isinstance(tags, str):
                tags_stripped = tags.strip()
                if tags_stripped.startswith('[') and tags_stripped.endswith(']'):
                    try:
                        parsed = json.loads(tags_stripped)
                        if isinstance(parsed, list):
                            tag_id_list.extend([int(x) for x in parsed if x is not None and str(x).strip() != ''])
                    except (ValueError, TypeError, json.JSONDecodeError):
                        pass
                if not tag_id_list:
                    tag_id_list.extend(
                        CaseTag.objects.filter(name__icontains=tags, is_deleted=False).values_list('id', flat=True)
                    )
        if tag_ids:
            try:
                if isinstance(tag_ids, str):
                    tag_id_list.extend([int(x.strip()) for x in tag_ids.split(',') if x.strip()])
                elif isinstance(tag_ids, list):
                    tag_id_list.extend([int(x) for x in tag_ids if x is not None and str(x).strip() != ''])
            except (ValueError, TypeError):
                pass
        tag_id_list = list(set(tag_id_list))
        if tag_id_list:
            Q_obj &= Q(tags__in=tag_id_list)
        
        cases = Case.objects.filter(Q_obj).order_by('-id')
        if tag_id_list:
            cases = cases.distinct()
        
        data = []
        for case in cases:
            # 解析负责人信息，获取负责人姓名
            responsible_person = ""
            try:
                responsiblefor_dict = json.loads(case.responsiblefor) if case.responsiblefor else {}
                if isinstance(responsiblefor_dict, dict):
                    responsible_person = responsiblefor_dict.get('responsible_person', '')
            except (json.JSONDecodeError, TypeError):
                pass
            
            # 构建显示文本（用于下拉列表显示）
            display_text = case.contract_no or f"案件#{case.id}"
            if case.project_type:
                display_text += f" - {case.project_type}"
            if case.client_name:
                display_text += f" ({case.client_name})"
            elif responsible_person:
                display_text += f" ({responsible_person})"
            
            data.append({
                "id": case.id,
                "value": case.id,  # 下拉列表的值
                "label": display_text,  # 下拉列表的显示文本
                "contract_no": case.contract_no or "",  # 合同编号
                "project_type": case.project_type or "",  # 项目类型
                "client_name": case.client_name or "",  # 客户名称
                "party_name": case.party_name or "",  # 相对方名称
                "project_description": case.project_description or "",  # 项目简述
                "responsible_person": responsible_person,  # 负责人
                "times": case.times,  # 立案时间
                "state": case.state,  # 状态
            })

        return Response({
            'message': '查询成功', 
            'data': data, 
            'total': len(data),
            'code': 0
        }, status=status.HTTP_200_OK)


class Application(APIView):
    def post(self, request, *args, **kwargs):
        """
        申请用印
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        token = request.META.get('token')
        Printingpurpose = request.data.get('Printingpurpose')
        # 案件编号（前端可不传），后端自动同步为“合同号”
        # 兼容：仍支持直接传 CaseNumber（即合同号）
        CaseNumber = request.data.get('CaseNumber')
        case_id = request.data.get('case_id')
        project_id = request.data.get('project_id')
        Reason = request.data.get('Reason')
        seal_number = request.data.get('seal_number')
        seal_type = request.data.get('seal_type')
        file = request.FILES.getlist('file')
        approvers = request.data.get('approvers')
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)

        if not all([Printingpurpose, Reason, seal_number, seal_type, file]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        now = datetime.now()
        date_str = now.strftime('%Y-%m-%d')
        user = User.objects.get(token=token, is_deleted=False)

        # 自动查询合同号写入 CaseNumber（案件编号）
        # 优先级：case_id > project_id > CaseNumber（兼容旧传参）
        contract_no = None
        if case_id:
            try:
                case = Case.objects.select_related('project').get(id=case_id, is_deleted=False)
                contract_no = case.contract_no or (case.project.ContractNo if case.project else None)
            except Case.DoesNotExist:
                return Response({'status': 'error', 'message': '案件不存在或已被删除', 'code': 1}, status=status.HTTP_404_NOT_FOUND)
        elif project_id:
            try:
                project = ProjectRegistration.objects.get(id=project_id, is_deleted=False)
                contract_no = project.ContractNo
            except ProjectRegistration.DoesNotExist:
                return Response({'status': 'error', 'message': '立项登记不存在或已被删除', 'code': 1}, status=status.HTTP_404_NOT_FOUND)
        else:
            contract_no = CaseNumber

        if not contract_no:
            return Response({
                'status': 'error',
                'message': '缺少案件信息：请传 case_id 或 project_id 以自动获取合同号，或直接传 CaseNumber（合同号）',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        sea = SealApplication.objects.create(
            Printingpurpose=Printingpurpose,
            CaseNumber=contract_no,
            Reason=Reason,
            seal_number=seal_number,
            seal_type=seal_type,
            file=json.dumps(flies(file)),
            times=date_str,
            state="审核中",
            username=user.username,
        )

        team_name = user.team
        from User.utils import create_approval_with_team_logic
        approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
            team_name=team_name,
            approvers=approvers,
            title=user.username + "申请用印",
            content=user.username + "在" + date_str + "申请用印，合同编号：" + str(contract_no) + "，用印事由：" + Reason + ",盖章份数：" + seal_number + "盖着类型：" + seal_type,
            approval_type="申请用印",
            user_id=sea.id,
            business_record=sea,
            today=date_str
        )
        if approval is None and needs_approval:
            return Response({
                'status': 'error',
                'message': build_missing_approvers_message(team_name, approvers),
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)


class ApplicationDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        申请用印展示
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        times = request.data.get('times')
        end_time = request.data.get('end_time')
        seal_type = request.data.get('seal_type')
        CaseNumber = request.data.get('CaseNumber')
        if not all([page, per_page]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        Q_obj = Q()
        if times and end_time:
            Q_obj &= Q(times__gte=times) & Q(times__lte=end_time)

        if seal_type:
            Q_obj &= Q(seal_type=seal_type)

        if CaseNumber:
            Q_obj &= Q(CaseNumber__icontains=CaseNumber)

        seas = SealApplication.objects.filter(Q_obj, is_deleted=False).order_by('-id')
        total = len(seas)

        paginator = Paginator(seas, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        for info in user_agents_page.object_list:
            data.append({
                "id": info.id,
                "Printingpurpose": info.Printingpurpose,
                "CaseNumber": info.CaseNumber,
                "Reason": info.Reason,
                "seal_number": info.seal_number,
                "seal_type": info.seal_type,
                "file": info.file,
                'times': info.times,
                "state": info.state,
                "username": info.username,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditApplication(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑申请用印
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        Printingpurpose = request.data.get('Printingpurpose')
        # 案件编号（合同号）：支持前端直接传，也支持通过 case_id/project_id 自动同步
        CaseNumber = request.data.get('CaseNumber')
        case_id = request.data.get('case_id')
        project_id = request.data.get('project_id')
        Reason = request.data.get('Reason')
        seal_number = request.data.get('seal_number')
        seal_type = request.data.get('seal_type')
        file = request.FILES.getlist('file')
        approvers = request.data.get('approvers')
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)

        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            app = SealApplication.objects.get(id=id, is_deleted=False)
        except SealApplication.DoesNotExist:
            return Response({'status': 'error', 'message': '申请用印不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        if Printingpurpose:
            app.Printingpurpose = Printingpurpose
            app.save(update_fields=['Printingpurpose'])
        # 优先通过 case_id / project_id 自动同步合同号
        contract_no = None
        if case_id:
            try:
                case = Case.objects.select_related('project').get(id=case_id, is_deleted=False)
                contract_no = case.contract_no or (case.project.ContractNo if case.project else None)
            except Case.DoesNotExist:
                return Response({'status': 'error', 'message': '案件不存在或已被删除', 'code': 1}, status=status.HTTP_404_NOT_FOUND)
        elif project_id:
            try:
                project = ProjectRegistration.objects.get(id=project_id, is_deleted=False)
                contract_no = project.ContractNo
            except ProjectRegistration.DoesNotExist:
                return Response({'status': 'error', 'message': '立项登记不存在或已被删除', 'code': 1}, status=status.HTTP_404_NOT_FOUND)
        elif CaseNumber:
            contract_no = CaseNumber

        if contract_no:
            app.CaseNumber = contract_no
            app.save(update_fields=['CaseNumber'])
        if Reason:
            app.Reason = Reason
            app.save(update_fields=['Reason'])
        if seal_number:
            app.seal_number = seal_number
            app.save(update_fields=['seal_number'])
        if seal_type:
            app.seal_type = seal_type
            app.save(update_fields=['seal_type'])
        if file:
            app.file = json.dumps(flies(file))
            app.save(update_fields=['file'])

        if approvers:
            now = datetime.now()
            date_str = now.strftime('%Y-%m-%d')
            from User.utils import create_approval_with_team_logic
            team_name = get_user_team_name(app.username)
            approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
                team_name=team_name,
                approvers=approvers,
                title=app.username + "申请用印重新编辑",
                content=app.username + "在" + date_str + "申请用印，合同编号：" + str(contract_no or app.CaseNumber) + "，用印事由：" + (
                        Reason or app.Reason) + ",盖章份数：" + (seal_number or app.seal_number) + "盖着类型：" + (
                                seal_type or app.seal_type),
                approval_type="申请用印",
                user_id=app.id,
                business_record=app,
                today=date_str
            )
            if approval is None and needs_approval:
                return Response({
                    'status': 'error',
                    'message': build_missing_approvers_message(team_name, approvers),
                    'code': 1
                }, status=status.HTTP_400_BAD_REQUEST)

        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class DeleteApplication(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除申请用印
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            app = SealApplication.objects.get(id=id, is_deleted=False)
        except SealApplication.DoesNotExist:
            return Response({'status': 'error', 'message': '申请用印不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        # 软删除：更新 is_deleted 字段
        app.is_deleted = True
        app.save()
        return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)


class WarehousingRegistration(APIView):
    def post(self, request, *args, **kwargs):
        """
        入库登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        unit = request.data.get('unit')
        mark = request.data.get('mark')
        lawyer = request.data.get('lawyer')
        deadline = request.data.get('deadline')
        contract = request.FILES.getlist('contract')

        if not all([unit, mark, lawyer, deadline, contract]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        now = datetime.now()
        date_str = now.strftime('%Y-%m-%d')
        Warehousing.objects.create(
            unit=unit,
            mark=mark,
            lawyer=lawyer,
            deadline=deadline,
            contract=json.dumps(flies(contract)),
            times=date_str,
        )
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)


class WarehousingDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        入库登记展示
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        times = request.data.get('times')
        end_time = request.data.get('end_time')
        unit = request.data.get('unit')
        if not all([page, per_page]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        Q_obj = Q()
        if times and end_time:
            Q_obj &= Q(times__gte=times) & Q(times__lte=end_time)

        if unit:
            Q_obj &= Q(unit__icontains=unit)

        seas = Warehousing.objects.filter(Q_obj, is_deleted=False).order_by('-id')
        total = len(seas)

        paginator = Paginator(seas, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        for info in user_agents_page.object_list:
            data.append({
                "id": info.id,
                "unit": info.unit,
                "mark": info.mark,
                "lawyer": info.lawyer,
                "deadline": info.deadline,
                "contract": info.contract,
                "times": info.times,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditWarehousing(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑入库登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        unit = request.data.get('unit')
        mark = request.data.get('mark')
        lawyer = request.data.get('lawyer')
        deadline = request.data.get('deadline')
        contract = request.FILES.getlist('contract')

        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            ware = Warehousing.objects.get(id=id, is_deleted=False)
        except Warehousing.DoesNotExist:
            return Response({'status': 'error', 'message': '入库登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        if unit:
            ware.unit = unit
            ware.save(update_fields=['unit'])
        if mark:
            ware.mark = mark
            ware.save(update_fields=['mark'])
        if lawyer:
            ware.lawyer = lawyer
            ware.save(update_fields=['lawyer'])
        if deadline:
            ware.deadline = deadline
            ware.save(update_fields=['deadline'])
        if contract:
            ware.contract = json.dumps(flies(contract))
            ware.save(update_fields=['contract'])

        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class DeleteWarehousing(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除入库登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            ware = Warehousing.objects.get(id=id, is_deleted=False)
        except Warehousing.DoesNotExist:
            return Response({'status': 'error', 'message': '入库登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        # 软删除：更新 is_deleted 字段
        ware.is_deleted = True
        ware.save()
        return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)


class PlatformRegistration(APIView):
    def post(self, request, *args, **kwargs):
        """
        注册平台登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        platform = request.data.get('platform')
        number = request.data.get('number')
        password = request.data.get('password')
        username = request.data.get('username')

        if not all([platform, number, password, username]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        RegisterPlatform.objects.create(
            platform=platform,
            number=number,
            password=password,
            username=username,
        )
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)


class PlatformDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        注册平台登记展示
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        seas = RegisterPlatform.objects.filter(is_deleted=False).order_by('-id')
        total = len(seas)

        paginator = Paginator(seas, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        for info in user_agents_page.object_list:
            data.append({
                "id": info.id,
                "platform": info.platform,
                "number": info.number,
                "password": info.password,
                "username": info.username,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditPlatformDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        注册平台登记编辑
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        ID = request.data.get('id')
        platform = request.data.get('platform')
        number = request.data.get('number')
        password = request.data.get('password')
        username = request.data.get('username')

        if not all([platform, number, password, username, ID]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        reg = RegisterPlatform.objects.get(id=ID, is_deleted=False)
        reg.platform = platform
        reg.number = number
        reg.password = password
        reg.username = username
        reg.save(update_fields=['platform', 'number', 'password', 'username'])
        return Response({'message': '修改成功', 'code': 0}, status=status.HTTP_200_OK)


class DeletePlatformDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除注册平台登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        ID = request.data.get('id')
        try:
            platform = RegisterPlatform.objects.get(id=ID, is_deleted=False)
            # 软删除：更新 is_deleted 字段
            platform.is_deleted = True
            platform.save()
            return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)
        except RegisterPlatform.DoesNotExist:
            return Response({'status': 'error', 'message': '注册平台登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)


class bulletin(APIView):
    def post(self, request, *args, **kwargs):
        """
        公告
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        title = request.data.get('title')
        content = request.data.get('content')
        file = request.FILES.getlist('file')
        state = request.data.get('state')
        token = request.META.get('token')

        if not all([title, content]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        now = datetime.now()
        date_str = now.strftime('%Y-%m-%d')
        bol = 0
        if state == "置顶":
            bol = 1

        user = User.objects.get(token=token, is_deleted=False).username
        Announcement.objects.create(
            title=title,
            content=content,
            file=json.dumps(flies(file)),
            username=user,
            times=date_str,
            state=bol
        )
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)


class BulletinDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        公告展示
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        seas = Announcement.objects.filter(is_deleted=False).order_by('-state', '-times')
        total = len(seas)

        paginator = Paginator(seas, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        for info in user_agents_page.object_list:
            # 解析 file 字段：有文件返回数组，无文件返回空字符串
            try:
                file_list = json.loads(info.file) if info.file else []
            except (json.JSONDecodeError, TypeError):
                file_list = []
            # 空列表返回空字符串
            file_result = file_list if file_list else ""
            if  file_list !="":
                file_result = json.dumps(file_result)
            data.append({
                "id": info.id,
                "title": info.title,
                "content": info.content,
                "times": info.times,
                "file": file_result,#file_result,
                "username": info.username,
                "state": info.state,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditBulletin(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑公告
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        ID = request.data.get('id')
        title = request.data.get('title')
        content = request.data.get('content')
        file = request.FILES.getlist('file')
        state = request.data.get('state')
        token = request.META.get('token')  # 从中间件设置的 token 获取

        if not all([title, content, ID]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            ann = Announcement.objects.get(id=ID, is_deleted=False)
        except Announcement.DoesNotExist:
            return Response({'status': 'error', 'message': '公告不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)

        now = datetime.now()
        date_str = now.strftime('%Y-%m-%d')

        if state:
            bol = 0
            if state == "置顶":
                bol = 1
            ann.state = bol
            ann.save(update_fields=['state'])

        # 获取用户信息（如果 token 存在）
        if token:
            try:
                user = User.objects.get(token=token, is_deleted=False).username
            except User.DoesNotExist:
                # 如果用户不存在，使用原有用户名
                user = ann.username
        else:
            # 如果 token 不存在，使用原有用户名
            user = ann.username

        if title:
            ann.title = title
            ann.save(update_fields=['title'])
        if content:
            ann.content = content
            ann.save(update_fields=['content'])
        if file:
            ann.file = json.dumps(flies(file))  # 使用 flies 函数处理文件
            ann.save(update_fields=['file'])

        ann.username = user
        ann.times = date_str

        ann.save(update_fields=['username', 'times'])
        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class deleteBulletin(APIView):
    def post(self, request, *args, **kwargs):
        ID = request.data.get('id')
        try:
            announcement = Announcement.objects.get(id=ID, is_deleted=False)
            # 软删除：更新 is_deleted 字段
            announcement.is_deleted = True
            announcement.save()
            return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)
        except Announcement.DoesNotExist:
            return Response({'status': 'error', 'message': '公告不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)


class Lawyersdocuments(APIView):
    def post(self, request, *args, **kwargs):
        token = request.META.get('token')
        file = request.FILES.getlist('file')
        filename = file[0].name
        name_without_extension, extension = os.path.splitext(filename)
        user = User.objects.get(token=token, is_deleted=False).username
        title = name_without_extension + extension
        if not all([file]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        now = datetime.now()
        date_str = now.strftime('%Y-%m-%d')
        LawyerFlie.objects.create(
            title=title,
            remark=user,
            file=json.dumps(flies(file)),
            times=date_str,
        )
        return Response({'message': '文件上传成功', 'code': 0}, status=status.HTTP_200_OK)


class LawyersdocumentsDetail(APIView):
    def post(self, request, *args, **kwargs):
        title = request.data.get('title')
        obj =Q(is_deleted=False)
        if title:
            obj &= Q(title__contains=title)
        law = LawyerFlie.objects.filter(obj).order_by('-id')
        total = law.count()
        data = []
        for info in law:
            data.append({
                "id": info.id,
                "title": info.title,
                "remark": info.remark,
                "file": info.file,
                "times": info.times,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class LwaDetail(APIView):
    def post(self, request, *args, **kwargs):
        id = request.data.get('id')
        try:
            lawyer_file = LawyerFlie.objects.get(id=id, is_deleted=False)
            # 软删除：更新 is_deleted 字段
            lawyer_file.is_deleted = True
            lawyer_file.save()
            return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)
        except LawyerFlie.DoesNotExist:
            return Response({'status': 'error', 'message': '律师文件不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)


class EditLawyerFlie(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑律师文件
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        title = request.data.get('title')
        file = request.FILES.getlist('file')
        remark = request.data.get('remark')

        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            law = LawyerFlie.objects.get(id=id, is_deleted=False)
        except LawyerFlie.DoesNotExist:
            return Response({'status': 'error', 'message': '律师文件不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)

        if title:
            law.title = title
            law.save(update_fields=['title'])
        if remark:
            law.remark = remark
            law.save(update_fields=['remark'])
        if file:
            law.file = json.dumps(flies(file))
            law.save(update_fields=['file'])

        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class CreateSchedule(APIView):
    def post(self, request, *args, **kwargs):
        """
        待办创建

        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        title = request.data.get('title')
        tiems = request.data.get('tiems')
        end_time = request.data.get('end_time')
        remark = request.data.get('remark')
        approvers = request.data.get('approvers')  # 审核人列表（团队类型时需要，推荐：用户ID数组如[1,2,3]，兼容：用户名数组）
        personincharge = request.data.get('personincharge')
        approvers = normalize_approvers_param(approvers, personincharge)

        if not all([title, tiems, end_time]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        
        # 获取当前用户
        token = request.META.get('token')
        try:
            user = User.objects.get(token=token, is_deleted=False)
        except User.DoesNotExist:
            return Response({'status': 'error', 'message': '用户不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)

        Schedule.objects.create(
            title=title,
            tiems=tiems,
            end_time=end_time,
            remark=remark,
            state="未完成",
            submit=user.username  # 记录提交人
        )
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)


class DeleteSchedule(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除日程
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        try:
            schedule = Schedule.objects.get(id=id, is_deleted=False)
            # 软删除：更新 is_deleted 字段
            schedule.is_deleted = True
            schedule.save()
            return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)
        except Schedule.DoesNotExist:
            return Response({'status': 'error', 'message': '日程不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)


class ScheduleDetail(APIView):
    def post(self, request, *args, **kwargs):
        """
        日程展示（仅展示用户主动创建的日程/待办，不包含结案申请等审批承载的 Schedule）
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        title = request.data.get('title')
        obj = Q(is_deleted=False)
        if title:
            obj &= Q(title__contains=title)
        # 排除作为「结案申请」审批承载的 Schedule，结案申请应出现在「审核中」而非「日程中」
        closing_application_schedule_ids = Approval.objects.filter(
            type="结案申请", is_deleted=False
        ).values_list('user_id', flat=True)
        closing_application_schedule_ids = [int(sid) for sid in closing_application_schedule_ids if sid and str(sid).isdigit()]
        if closing_application_schedule_ids:
            obj &= ~Q(id__in=closing_application_schedule_ids)
        sches = Schedule.objects.filter(obj).order_by('-id')
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        total = len(sches)

        paginator = Paginator(sches, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        for info in user_agents_page.object_list:
            data.append({
                "id": info.id,
                "title": info.title,
                "tiems": info.tiems,
                "end_time": info.end_time,
                "remark": info.remark,
                'state': info.state,
            })
        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class EditSchedule(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑日程
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        title = request.data.get('title')
        tiems = request.data.get('tiems')
        end_time = request.data.get('end_time')
        remark = request.data.get('remark')

        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            schedule = Schedule.objects.get(id=id, is_deleted=False)
        except Schedule.DoesNotExist:
            return Response({'status': 'error', 'message': '日程不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)

        if title:
            schedule.title = title
            schedule.save(update_fields=['title'])
        if tiems:
            schedule.tiems = tiems
            schedule.save(update_fields=['tiems'])
        if end_time:
            schedule.end_time = end_time
            schedule.save(update_fields=['end_time'])
        if remark:
            schedule.remark = remark
            schedule.save(update_fields=['remark'])

        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class handleSchedule(APIView):
    def post(self, request, *args, **kwargs):
        id = request.data.get('id')
        state = request.data.get('state')
        if not all([id, state]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        try:
            sc = Schedule.objects.get(id=id, is_deleted=False)
            sc.state = "已完成"
            sc.save(update_fields=['state'])
            return Response({'message': '修改成功', 'code': 0}, status=status.HTTP_200_OK)
        except Schedule.DoesNotExist:
            return Response({'status': 'error', 'message': '日程不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)


class AddRermission(APIView):
    """
    添加权限
    """

    def post(self, request, *args, **kwargs):
        permission_name = request.data.get('permission_name')
        permission_logo = request.data.get('permission_logo')
        parent = request.data.get('parent')
        if not all([permission_name, permission_logo, parent]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        permission.objects.create(
            permission_name=permission_name,
            permission_logo=permission_logo,
            parent=parent,
        )
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)


class DisplayRermission(APIView):
    def post(self, request, *args, **kwargs):
        """
        权限列表展示
        """
        permissions = permission.objects.filter(is_deleted=False)

        # 先将数据转换为字典格式
        data = []
        permission_dict = {}

        for per in permissions:
            item = {
                "id": str(per.id),
                "permission_name": per.permission_name,
                "permission_logo": per.permission_logo,
                "parent": str(per.parent),
                "children": []
            }
            data.append(item)
            permission_dict[str(per.id)] = item

        # 构建树形结构
        tree = []
        for item in data:
            parent_id = item["parent"]

            # 如果parent是0或者不存在，说明是根节点
            if parent_id == "0" or parent_id not in permission_dict:
                tree.append(item)
            else:
                # 找到父节点并添加到children中
                parent_node = permission_dict.get(parent_id)
                if parent_node:
                    parent_node["children"].append(item)

        return Response({
            'message': '展示成功',
            "data": tree,
            'code': 0
        }, status=status.HTTP_200_OK)


class DeleteRermission(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除权限
        """
        ID = request.data.get('id')
        try:
            perm = permission.objects.get(id=ID, is_deleted=False)
            # 记录操作前的数据
            old_data = {
                'id': perm.id,
                'permission_name': perm.permission_name,
                'permission_logo': perm.permission_logo
            }
            # 软删除：更新 is_deleted 字段
            perm.is_deleted = True
            perm.save()
            # 记录操作日志
            log_operation(
                request=request,
                operation_type='DELETE',
                module='Business',
                action='删除权限',
                target_type='Permission',
                target_id=perm.id,
                target_name=perm.permission_name,
                old_data=old_data,
                remark=f'删除权限：{perm.permission_name}'
            )
            return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)
        except permission.DoesNotExist:
            return Response({'status': 'error', 'message': '权限不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)


class EditRermission(APIView):
    def post(self, request, *args, **kwargs):
        """
        编辑权限
        """
        id = request.data.get('id')
        permission_name = request.data.get('permission_name')
        permission_logo = request.data.get('permission_logo')
        parent = request.data.get('parent')
        per = permission.objects.get(id=id)
        if permission_name:
            per.permission_name = permission_name
            per.save(update_fields=['permission_name'])
        if permission_logo:
            per.permission_logo = permission_logo
            per.save(update_fields=['permission_logo'])
        if parent:
            per.parent = parent
            per.save(update_fields=['parent'])
        return Response({'message': '修改成功', 'code': 0}, status=status.HTTP_200_OK)


class addRole(APIView):
    def post(self, request, *args, **kwargs):
        RoleName = request.data.get('RoleName')
        remark = request.data.get('remark')
        if not all([RoleName]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        # 检查角色名是否已存在
        if role.objects.filter(RoleName=RoleName).exists():
            return Response({'status': 'error', 'message': '角色名已存在，不能重复', 'code': 1},
                            status=status.HTTP_400_BAD_REQUEST)

        role.objects.create(RoleName=RoleName, remark=remark)
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)


class DeleteRole(APIView):
    def post(self, request, *args, **kwargs):
        id = request.data.get('id')
        try:
            r = role.objects.get(id=id, is_deleted=False)
            # 记录操作前的数据
            old_data = {
                'id': r.id,
                'role_name': r.RoleName,
                'permission_id': r.permissionId
            }
            # 软删除：更新 is_deleted 字段
            r.is_deleted = True
            r.save()
            # 记录操作日志
            log_operation(
                request=request,
                operation_type='DELETE',
                module='Business',
                action='删除角色',
                target_type='Role',
                target_id=r.id,
                target_name=r.RoleName,
                old_data=old_data,
                remark=f'删除角色：{r.RoleName}'
            )
            return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)
        except role.DoesNotExist:
            return Response({'status': 'error', 'message': '角色不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)


class EditRole(APIView):
    def post(self, request, *args, **kwargs):
        id = request.data.get('id')
        RoleName = request.data.get('RoleName')
        remark = request.data.get('remark')
        if not all([id]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        ro = role.objects.get(id=id)
        if RoleName:
            # 检查角色名是否已被其他角色使用（排除当前角色）
            if role.objects.filter(RoleName=RoleName).exclude(id=id).exists():
                return Response({'status': 'error', 'message': '角色名已存在，不能重复', 'code': 1},
                                status=status.HTTP_400_BAD_REQUEST)
            ro.RoleName = RoleName
            ro.save(update_fields=['RoleName'])
        if remark:
            ro.remark = remark
            ro.save(update_fields=['remark'])
        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class displayRole(APIView):
    """
    角色列表展示
    """

    def post(self, request, *args, **kwargs):
        RoleName = request.data.get('RoleName')
        obj = Q()
        if RoleName:
            obj = Q(RoleName__icontains=RoleName)
        roles = role.objects.filter(obj)
        data = []
        for ro in roles:
            data.append({
                "id": str(ro.id),
                "RoleName": ro.RoleName,
                "remark": ro.remark,
            })
        return Response({'message': '展示成功', 'data': data, 'code': 0}, status=status.HTTP_200_OK)


class modifypermissions(APIView):
    def post(self, request, *args, **kwargs):
        """
        修改角色权限
        """
        id = request.data.get('id')
        permissionId = request.data.get('permissionId')
        if not all([id, permissionId]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        permissionId = ast.literal_eval(permissionId)
        ro = role.objects.get(id=id)
        # Convert list to compact comma-separated string format to save space
        if isinstance(permissionId, list):
            ro.permissionId = ','.join(map(str, permissionId))
        else:
            ro.permissionId = str(permissionId)
        ro.save(update_fields=['permissionId'])

        return Response({'message': '权限修改成功', 'code': 0}, status=status.HTTP_200_OK)


class getRolePermissions(APIView):
    def post(self, request, *args, **kwargs):
        """
        查询角色权限
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        role_id = request.data.get('roleId')
        if not role_id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            ro = role.objects.get(id=role_id)
        except role.DoesNotExist:
            return Response({'status': 'error', 'message': '角色不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)

        # 解析权限ID列表
        try:
            if ro.permissionId:
                # Try to parse as comma-separated format first (new format)
                if ',' in ro.permissionId and not ro.permissionId.strip().startswith('['):
                    permission_ids = [int(x.strip()) for x in ro.permissionId.split(',') if x.strip()]
                else:
                    # Fall back to ast.literal_eval for backward compatibility
                    permission_ids = ast.literal_eval(ro.permissionId)
                    if not isinstance(permission_ids, list):
                        permission_ids = []
            else:
                permission_ids = []
        except (ValueError, SyntaxError):
            # 如果解析失败，返回空列表
            permission_ids = []

        return Response({'message': '查询成功', 'data': permission_ids, 'code': 0}, status=status.HTTP_200_OK)


class DeleteRegistration(APIView):
    def post(self, request, *args, **kwargs):
        """
        删除预立案登记
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        id = request.data.get('id')
        if not id:
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            pre = PreFiling.objects.get(id=id, is_deleted=False)

            # 注意：由于预立案和立项登记、投标登记已经拆分，不再需要检查关联
            # 预立案现在可以独立删除（如果不再需要的话）
            # 如果将来需要保留预立案用于其他用途，可以保留此检查逻辑

            # 软删除：更新 is_deleted 字段
            pre.is_deleted = True
            pre.save()
            return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)
        except PreFiling.DoesNotExist:
            return Response({'status': 'error', 'message': '预立案登记不存在', 'code': 1},
                            status=status.HTTP_404_NOT_FOUND)


class TransferCase(APIView):
    def post(self, request, *args, **kwargs):
        """
        案件转移接口
        将案件的承办人员从离职用户转移到新用户
        :param request:
        :param args:
        :param kwargs:
        :return:
        """
        old_undertaker = request.data.get('old_undertaker')  # 原承办人员（离职用户）
        new_undertaker = request.data.get('new_undertaker')  # 新承办人员
        case_ids = request.data.get('case_ids')  # 要转移的案件ID列表（可选，如果不传则转移所有案件）
        project_ids = request.data.get('project_ids')  # 要转移的立项ID列表（可选）

        if not all([old_undertaker, new_undertaker]):
            return Response({
                'status': 'error',
                'message': '缺少参数：原承办人员和新承办人员不能为空',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        # 检查原承办人员是否存在（排除软删除用户）
        try:
            old_user = User.objects.get(username=old_undertaker, is_deleted=False)
        except User.DoesNotExist:
            return Response({
                'status': 'error',
                'message': '原承办人员不存在或已被删除',
                'code': 1
            }, status=status.HTTP_404_NOT_FOUND)

        # 检查新承办人员是否存在（排除软删除用户）
        try:
            new_user = User.objects.get(username=new_undertaker, is_deleted=False)
        except User.DoesNotExist:
            return Response({
                'status': 'error',
                'message': '新承办人员不存在或已被删除',
                'code': 1
            }, status=status.HTTP_404_NOT_FOUND)

        # 查询要转移的预立案
        if case_ids and isinstance(case_ids, list):
            prefiling_cases = PreFiling.objects.filter(Undertaker=old_undertaker, id__in=case_ids)
        else:
            prefiling_cases = PreFiling.objects.filter(Undertaker=old_undertaker)

        prefiling_count = prefiling_cases.count()

        def _replace_responsible(responsiblefor_value, old_name, new_name):
            try:
                data = json.loads(responsiblefor_value) if responsiblefor_value else {}
            except (json.JSONDecodeError, TypeError):
                data = responsiblefor_value if responsiblefor_value else {}
            if not isinstance(data, dict):
                return None, False
            changed = False
            for key, value in list(data.items()):
                if value == old_name:
                    data[key] = new_name
                    changed = True
            return data, changed

        # 查询要转移的正式案件
        formal_cases_qs = Case.objects.filter(is_deleted=False, responsiblefor__icontains=old_undertaker)
        if case_ids and isinstance(case_ids, list):
            formal_cases_qs = formal_cases_qs.filter(id__in=case_ids)

        # 查询要转移的立项登记
        formal_projects_qs = ProjectRegistration.objects.filter(is_deleted=False, responsiblefor__icontains=old_undertaker)
        if project_ids and isinstance(project_ids, list):
            formal_projects_qs = formal_projects_qs.filter(id__in=project_ids)

        formal_cases = list(formal_cases_qs)
        formal_projects = list(formal_projects_qs)

        total_count = prefiling_count + len(formal_cases) + len(formal_projects)

        if total_count == 0:
            return Response({
                'status': 'error',
                'message': '没有找到需要转移的案件',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        # 执行转移
        transferred_prefilings = []
        for case in prefiling_cases:
            case.Undertaker = new_undertaker
            case.save(update_fields=['Undertaker'])
            transferred_prefilings.append({
                'id': case.id,
                'times': case.times,
                'client_username': case.client_username,
                'party_username': case.party_username,
                'description': case.description
            })

        transferred_formal_cases = []
        for case in formal_cases:
            updated_data, changed = _replace_responsible(case.responsiblefor, old_undertaker, new_undertaker)
            if changed:
                case.responsiblefor = json.dumps(updated_data, ensure_ascii=False)
                case.save(update_fields=['responsiblefor'])
                transferred_formal_cases.append({
                    'id': case.id,
                    'project_id': case.project_id,
                    'contract_no': case.contract_no,
                    'project_type': case.project_type,
                    'times': case.times
                })

        transferred_projects = []
        for project in formal_projects:
            updated_data, changed = _replace_responsible(project.responsiblefor, old_undertaker, new_undertaker)
            if changed:
                project.responsiblefor = json.dumps(updated_data, ensure_ascii=False)
                project.save(update_fields=['responsiblefor'])
                transferred_projects.append({
                    'id': project.id,
                    'contract_no': project.ContractNo,
                    'type': project.type,
                    'times': project.times
                })

        return Response({
            'message': f'案件转移成功，共转移{total_count}个案件',
            'code': 0,
            'data': {
                'old_undertaker': old_undertaker,
                'new_undertaker': new_undertaker,
                'transferred_count': total_count,
                'prefiling_count': prefiling_count,
                'formal_case_count': len(transferred_formal_cases),
                'formal_project_count': len(transferred_projects),
                'prefiling_cases': transferred_prefilings,
                'formal_cases': transferred_formal_cases,
                'formal_projects': transferred_projects
            }
        }, status=status.HTTP_200_OK)


class CaseChangeRequestCreate(APIView):
    """创建案件变更申请（需传入审批人）"""
    def post(self, request, *args, **kwargs):
        case_id = request.data.get('case_id')  # 案件ID（可选）
        contract_no = request.data.get('contract_no')  # 合同编号（必填）
        change_item = request.data.get('change_item')  # 变更事项
        change_reason = request.data.get('change_reason')  # 变更原因
        change_agreement = request.FILES.getlist('change_agreement') or request.FILES.getlist('ChangeAgreement')  # 变更协议文件
        approvers = request.data.get('approvers')  # 审批人（必填）：用户ID数组如[1,2,3]，或用户名数组["张三","李四"]，或逗号分隔字符串
        personincharge = request.data.get('personincharge')  # 兼容旧接口，未传approvers时使用
        approvers = normalize_approvers_param(approvers, personincharge)
        
        # 验证必填参数
        if not contract_no:
            return Response({
                'status': 'error',
                'message': '缺少参数contract_no（合同编号）',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        if not all([change_item, change_reason, change_agreement]):
            return Response({
                'status': 'error',
                'message': '变更申请需要填写变更事项、变更原因并上传变更协议',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        if not approvers:
            return Response({
                'status': 'error',
                'message': '缺少参数approvers（审批人），请传入审批人列表，如用户ID数组[1,2,3]或用户名数组["张三","李四"]',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 如果提供了case_id，验证案件是否存在（可选）
        case = None
        if case_id:
            try:
                case = Case.objects.get(id=case_id, is_deleted=False)
            except Case.DoesNotExist:
                return Response({
                    'status': 'error',
                    'message': '案件不存在或已删除',
                    'code': 1
                }, status=status.HTTP_404_NOT_FOUND)
        
        # 获取申请人
        applicant_name = "未知用户"
        token = request.META.get('token')
        if token:
            try:
                applicant = User.objects.get(token=token, is_deleted=False)
                applicant_name = applicant.username
            except User.DoesNotExist:
                pass
        
        # 上传变更协议文件
        agreement_urls = flies(change_agreement)
        if not agreement_urls:
            return Response({
                'status': 'error',
                'message': '变更协议上传失败',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 创建变更申请（审批人由入参 approvers 传入，create_approval_with_team_logic 会解析并回写 approvers_order）
        today = datetime.now().strftime("%Y-%m-%d")
        change_request = CaseChangeRequest.objects.create(
            case=case,  # 案件关联（可选）
            contract_no=contract_no,  # 合同编号（必填）
            change_item=change_item,
            change_reason=change_reason,
            change_agreement=json.dumps(agreement_urls, ensure_ascii=False),
            times=today,
            applicant=applicant_name,
            state='审核中',
            approvers_order=None,  # 由 create_approval_with_team_logic 根据 approvers 入参回写
            need_approval=True
        )

        # 如果提供了case_id，更新案件的change_request字段
        if case:
            case.change_request = change_request
            case.save(update_fields=['change_request'])

        # 构建审批内容（不含审批流程，由 create_approval_with_team_logic 追加）
        if case:
            content = build_change_approval_content(
                applicant_name, case, change_item, change_reason, agreement_urls
            )
        else:
            content = f"{applicant_name}提交案件变更申请，合同编号：{contract_no}，变更事项：{change_item}，变更原因：{change_reason}，变更协议：{', '.join(agreement_urls)}"

        from User.utils import create_approval_with_team_logic

        approval, approvers_order_json, needs_approval = create_approval_with_team_logic(
            team_name=None,
            approvers=approvers,
            title="案件变更申请",
            content=content,
            approval_type="案件变更",
            user_id=str(change_request.id),
            business_record=change_request,
            today=today,
            applicant=applicant_name
        )
        if approval is None and needs_approval:
            return Response({
                'status': 'error',
                'message': '审批人无效或不存在，请检查approvers参数（需为系统中的用户ID或用户名）',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)

        return Response({
            'message': '变更申请提交成功',
            'code': 0,
            'data': {
                'change_request_id': change_request.id
            }
        }, status=status.HTTP_200_OK)


class CaseChangeRequestList(APIView):
    """
    案件变更申请列表查询。
    默认仅展示审批通过的数据（审批通过后才进变更申请表格）。
    我的申请/全部：传 show_all=true 或 state=审核中,待查看,已通过,未通过 可查全部或按状态筛选。
    """
    def post(self, request, *args, **kwargs):
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        case_id = request.data.get('case_id')  # 可选：按案件ID筛选
        state = request.data.get('state')  # 可选：按状态筛选；不传且不传 show_all 时默认只返回已通过
        approved_only = request.data.get('approved_only')  # 可选：为 true 时仅返回已通过
        show_all = request.data.get('show_all')  # 可选：为 true 时返回全部状态（我的申请用），不传则默认只返回已通过
        
        # 参数验证和默认值处理
        try:
            page = int(page) if page and str(page).lower() != 'undefined' else 1
            per_page = int(per_page) if per_page and str(per_page).lower() != 'undefined' else 10
        except (ValueError, TypeError):
            return Response({
                'status': 'error',
                'message': '参数page和per_page必须是有效的数字',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        if page < 1:
            page = 1
        if per_page < 1:
            per_page = 10
        
        Q_obj = Q(is_deleted=False)
        if case_id:
            Q_obj &= Q(case_id=case_id)
        # 变更申请表格：默认只展示审批通过的数据；传 show_all=true 可查全部（我的申请）
        if show_all in (True, 'true', '1', 1):
            pass  # 不按状态筛选，返回全部
        elif approved_only in (True, 'true', '1', 1) or state == '已通过':
            Q_obj &= Q(state='已通过')
        elif state:
            # 支持单状态或逗号分隔多状态
            if isinstance(state, str) and ',' in state:
                states = [s.strip() for s in state.split(',') if s.strip()]
                if states:
                    Q_obj &= Q(state__in=states)
            else:
                Q_obj &= Q(state=state)
        else:
            # 默认：仅展示已通过，数据审批通过后才进变更申请表格
            Q_obj &= Q(state='已通过')
        
        queryset = CaseChangeRequest.objects.filter(Q_obj).order_by('-id')
        total = queryset.count()
        
        paginator = Paginator(queryset, per_page)
        try:
            page_obj = paginator.page(page)
        except PageNotAnInteger:
            page_obj = paginator.page(1)
        except EmptyPage:
            page_obj = paginator.page(paginator.num_pages)
        
        data = []
        for change_request in page_obj.object_list:
            try:
                agreement_list = json.loads(change_request.change_agreement) if change_request.change_agreement else []
            except (json.JSONDecodeError, TypeError):
                agreement_list = []
            
            try:
                approvers_list = json.loads(change_request.approvers_order) if change_request.approvers_order else []
            except (json.JSONDecodeError, TypeError):
                approvers_list = []
            
            data.append({
                'id': change_request.id,
                'contract_no': change_request.contract_no,  # 合同编号
                'case_id': change_request.case.id if change_request.case else None,
                'case_contract_no': change_request.case.contract_no if change_request.case else None,
                'case_project_type': change_request.case.project_type if change_request.case else None,
                'change_item': change_request.change_item,  # 变更事项
                'change_reason': change_request.change_reason,  # 变更原因
                'change_agreement': change_request.change_agreement,  # 变更协议（JSON字符串）
                'change_agreement_urls': agreement_list,  # 解析后的URL列表
                'times': change_request.times,
                'applicant': change_request.applicant,
                'state': change_request.state,
                'approvers_order': approvers_list
            })
        
        return Response({
            'message': '查询成功',
            'total': total,
            'data': data,
            'code': 0
        }, status=status.HTTP_200_OK)


class CaseChangeRequestDetail(APIView):
    """案件变更申请详情查询"""
    def post(self, request, *args, **kwargs):
        change_request_id = request.data.get('change_request_id') or request.data.get('id')
        
        if not change_request_id:
            return Response({
                'status': 'error',
                'message': '缺少参数change_request_id或id',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        try:
            change_request = CaseChangeRequest.objects.get(id=change_request_id, is_deleted=False)
        except CaseChangeRequest.DoesNotExist:
            return Response({
                'status': 'error',
                'message': '变更申请不存在或已删除',
                'code': 1
            }, status=status.HTTP_404_NOT_FOUND)
        
        try:
            agreement_list = json.loads(change_request.change_agreement) if change_request.change_agreement else []
        except (json.JSONDecodeError, TypeError):
            agreement_list = []
        
        try:
            approvers_list = json.loads(change_request.approvers_order) if change_request.approvers_order else []
        except (json.JSONDecodeError, TypeError):
            approvers_list = []
        
        # 获取案件信息（如果有关联）
        case_data = None
        if change_request.case:
            case = change_request.case
            case_data = {
                'id': case.id,
                'contract_no': case.contract_no,
                'project_type': case.project_type,
                'client_name': case.client_name,
                'party_name': case.party_name,
                'project_description': case.project_description
            }
        
        data = {
            'id': change_request.id,
            'contract_no': change_request.contract_no,  # 合同编号
            'case': case_data,  # 案件信息（如果有关联）
            'change_item': change_request.change_item,  # 变更事项
            'change_reason': change_request.change_reason,  # 变更原因
            'change_agreement': change_request.change_agreement,  # 变更协议（JSON字符串）
            'change_agreement_urls': agreement_list,  # 解析后的URL列表
            'times': change_request.times,
            'applicant': change_request.applicant,
            'state': change_request.state,
            'approvers_order': approvers_list
        }
        
        return Response({
            'message': '查询成功',
            'data': data,
            'code': 0
        }, status=status.HTTP_200_OK)


def _prefiling_person_to_info(person_json):
    """从预立案的 client_username/party_username（JSON）中提取第一个人员，转为 conflict_search 可用的字符串。"""
    if not person_json:
        return None
    try:
        data = json.loads(person_json) if isinstance(person_json, str) else person_json
        if isinstance(data, list) and len(data) > 0:
            item = data[0]
            if isinstance(item, dict):
                name = (item.get('name') or item.get('name_original') or '').strip()
                id_num = (item.get('idNumber') or item.get('id_number') or '').strip()
                if name:
                    return f"{name}，身份证：{id_num}" if id_num else name
        elif isinstance(data, dict):
            name = (data.get('name') or data.get('name_original') or '').strip()
            id_num = (data.get('idNumber') or data.get('id_number') or '').strip()
            if name:
                return f"{name}，身份证：{id_num}" if id_num else name
    except (json.JSONDecodeError, TypeError, AttributeError):
        pass
    return None


def _extract_all_person_info(info_val):
    """
    从 client_info/party_info 中提取所有人员的姓名和身份证号。
    支持：
      - JSON 字符串数组：'[{"name":"张三","idNumber":"111"},{"name":"王五","idNumber":"333"}]'
      - JSON 字符串对象：'{"name":"张三","idNumber":"111"}'
      - list / dict（已解析的 JSON）
      - 普通字符串："张三（111）"、"张三，身份证号：111"、"张三"
    返回: (names_list, id_numbers_list, originals_list)
    """
    names = []
    id_numbers = []
    originals = []
    if not info_val:
        return names, id_numbers, originals
    # 尝试 JSON 解析
    data = None
    if isinstance(info_val, str):
        info_val = info_val.strip()
        if not info_val:
            return names, id_numbers, originals
        if info_val.startswith('[') or info_val.startswith('{'):
            try:
                data = json.loads(info_val)
            except (json.JSONDecodeError, TypeError):
                pass
    elif isinstance(info_val, (list, dict)):
        data = info_val
    if data is not None:
        if isinstance(data, dict):
            data = [data]
        if isinstance(data, list):
            for item in data:
                if not isinstance(item, dict):
                    continue
                name = (item.get('name') or item.get('name_original') or '').strip()
                id_num = (item.get('idNumber') or item.get('id_number') or '').strip()
                if name:
                    names.append(name)
                if id_num:
                    id_numbers.append(id_num)
                orig = f"{name}（{id_num}）" if name and id_num else (name or id_num or '')
                if orig:
                    originals.append(orig)
            if names or id_numbers:
                return names, id_numbers, originals
    # 回退到处理普通字符串
    if isinstance(info_val, str):
        # 先尝试匹配多个 "name(id)" 格式（如 "张三(123456),李四(789012)"）
        matches = re.findall(r'([^,，（(]+?)\s*[（(]([^）)]*)[）)]', info_val)
        if matches:
            for name, id_num in matches:
                name = name.strip()
                id_num = id_num.strip()
                if name:
                    names.append(name)
                if id_num:
                    id_numbers.append(id_num)
                orig = f"{name}（{id_num}）" if name and id_num else (name or id_num or '')
                if orig:
                    originals.append(orig)
            return names, id_numbers, originals
        # 没有匹配到多人格式，回退到单人解析
        parsed = parse_person_info(info_val)
        if parsed['name']:
            names.append(parsed['name'])
        if parsed['id_number']:
            id_numbers.append(parsed['id_number'])
        if parsed['original']:
            originals.append(parsed['original'])
    return names, id_numbers, originals


def parse_person_info(person_str):
    """
    解析人员信息字符串，支持多种格式：
    - "张三（3263452342342342）"
    - "张三，身份证号：3263452342342342"
    - "张三,3263452342342342"
    - "张三"
    
    Returns:
        dict: {
            'name': '张三',
            'id_number': '3263452342342342',  # 可能为空
            'original': '张三（3263452342342342）'  # 原始字符串
        }
    """
    if not person_str:
        return {'name': '', 'id_number': '', 'original': ''}
    
    person_str = str(person_str).strip()
    result = {
        'name': '',
        'id_number': '',
        'original': person_str
    }
    
    # 匹配格式：张三（3263452342342342）或张三(3263452342342342)
    match = re.match(r'^([^（(]+?)[（(]([^）)]+)[）)]', person_str)
    if match:
        result['name'] = match.group(1).strip()
        result['id_number'] = match.group(2).strip()
        return result
    
    # 匹配格式：张三，身份证号：3263452342342342 或 张三,身份证号:3263452342342342
    match = re.match(r'^([^，,]+?)[，,]\s*[身身]份证[号号]?[：:]?\s*([^\s，,]+)', person_str)
    if match:
        result['name'] = match.group(1).strip()
        result['id_number'] = match.group(2).strip()
        return result
    
    # 匹配格式：张三,3263452342342342（逗号分隔）
    match = re.match(r'^([^，,]+?)[，,]\s*(\d{15,18})', person_str)
    if match:
        result['name'] = match.group(1).strip()
        result['id_number'] = match.group(2).strip()
        return result
    
    # 如果没有匹配到特定格式，尝试提取姓名（去除可能的身份证号）
    # 先尝试提取姓名部分（去除末尾的数字）
    name_match = re.match(r'^([^，,\d（(]+)', person_str)
    if name_match:
        result['name'] = name_match.group(1).strip()
    else:
        result['name'] = person_str
    
    # 尝试提取身份证号（15-18位数字）
    id_match = re.search(r'(\d{15,18})', person_str)
    if id_match:
        result['id_number'] = id_match.group(1)
    
    return result


def conflict_search(client_info=None, party_info=None, undertaker=None, bidding_unit=None, exclude_prefiling_id=None, exclude_project_id=None, exclude_bid_id=None):
    """
    利益冲突检索函数 - 比对预立案登记、投标登记、立项登记三张表
    
    Args:
        client_info: 委托人身份信息（可选）
        party_info: 相对方身份信息（可选）
        undertaker: 承办人员（可选）
        bidding_unit: 招标单位（可选）
        exclude_prefiling_id: 要排除的预立案ID（可选）
        exclude_project_id: 要排除的立项ID（可选）
        exclude_bid_id: 要排除的投标ID（可选）
    
    Returns:
        dict: 包含三个表的冲突记录信息
        {
            'prefiling_conflicts': [...],  # 预立案冲突记录列表
            'project_conflicts': [...],    # 立项冲突记录列表
            'bid_conflicts': [...]         # 投标冲突记录列表
        }
    """
    result = {
        'prefiling_conflicts': [],
        'project_conflicts': [],
        'bid_conflicts': []
    }
    
    # 如果没有提供任何查询条件，返回空结果
    if not any([client_info, party_info, undertaker, bidding_unit]):
        return result

    def _normalize_id(s):
        """身份证/统一代码规范化后再精准匹配：去首尾空格、去内部空格与横线，仅当完全一致才匹配。"""
        if not s or not isinstance(s, str):
            return ''
        t = s.strip().replace(' ', '').replace('\u3000', '').replace('-', '')
        return t

    # 解析委托人和相对方信息（支持 JSON 数组，提取所有人员的姓名和身份证号）
    client_names, client_id_numbers, client_originals = _extract_all_person_info(client_info)
    party_names, party_id_numbers, party_originals = _extract_all_person_info(party_info)

    # 按「人」成对：每人 (姓名, 规范化身份证)。当同时填了姓名+身份证时，必须同一人两项都一致才命中
    def _person_pairs(names, id_numbers):
        out = []
        for i in range(max(len(names), len(id_numbers))):
            name = (names[i] if i < len(names) else '').strip()
            id_norm = _normalize_id(id_numbers[i]) if i < len(id_numbers) else ''
            if name or id_norm:
                out.append((name, id_norm))
        return out

    client_persons = _person_pairs(client_names, client_id_numbers)
    party_persons = _person_pairs(party_names, party_id_numbers)

    def _person_match(record_name, record_id_norm, search_persons):
        """记录中的一人 (record_name, record_id_norm) 是否与任意搜索人精准匹配（姓名+身份证都一致）。"""
        for sn, si in search_persons:
            if not sn and not si:
                continue
            name_ok = (not sn) or (record_name == sn)
            id_ok = (not si) or (record_id_norm == si)
            if name_ok and id_ok:
                return True
        return False

    # 1. 检索预立案表
    prefiling_q = Q(is_deleted=False)
    if exclude_prefiling_id:
        prefiling_q &= ~Q(id=exclude_prefiling_id)
    
    matched_prefilings = []
    prefiling_all = PreFiling.objects.filter(prefiling_q)
    
    for pf in prefiling_all:
        if len(matched_prefilings) >= 50:
            break
        
        is_match = False
        match_reason = []
        
        # 解析历史记录的委托人/相对方姓名及身份证号
        pf_client_names = []
        pf_client_ids = []
        try:
            cd = json.loads(pf.client_username) if isinstance(pf.client_username, str) else pf.client_username
            if isinstance(cd, list):
                for item in cd:
                    if isinstance(item, dict):
                        n = (item.get('name') or '').strip()
                        if n:
                            pf_client_names.append(n)
                        pid = (item.get('idNumber') or item.get('id_number') or '').strip()
                        if pid:
                            pf_client_ids.append(pid)
            elif isinstance(cd, dict):
                n = (cd.get('name') or '').strip()
                if n:
                    pf_client_names.append(n)
                pid = (cd.get('idNumber') or cd.get('id_number') or '').strip()
                if pid:
                    pf_client_ids.append(pid)
        except (json.JSONDecodeError, TypeError, AttributeError):
            if pf.client_username:
                pf_client_names = [pf.client_username.strip()]
        
        pf_party_names = []
        pf_party_ids = []
        try:
            pd = json.loads(pf.party_username) if isinstance(pf.party_username, str) else pf.party_username
            if isinstance(pd, list):
                for item in pd:
                    if isinstance(item, dict):
                        n = (item.get('name') or '').strip()
                        if n:
                            pf_party_names.append(n)
                        pid = (item.get('idNumber') or item.get('id_number') or '').strip()
                        if pid:
                            pf_party_ids.append(pid)
            elif isinstance(pd, dict):
                n = (pd.get('name') or '').strip()
                if n:
                    pf_party_names.append(n)
                pid = (pd.get('idNumber') or pd.get('id_number') or '').strip()
                if pid:
                    pf_party_ids.append(pid)
        except (json.JSONDecodeError, TypeError, AttributeError):
            if pf.party_username:
                pf_party_names = [pf.party_username.strip()]
        
        # 冲突规则：按「人」精准匹配，同一人必须姓名+身份证都一致才命中
        pf_client_persons = _person_pairs(pf_client_names, [_normalize_id(x) for x in pf_client_ids])
        pf_party_persons = _person_pairs(pf_party_names, [_normalize_id(x) for x in pf_party_ids])
        if client_persons and pf_client_persons:
            for rn, ri in pf_client_persons:
                if _person_match(rn, ri, client_persons):
                    is_match = True
                    match_reason.append(f"委托人匹配：{rn or ri or '身份证'}")
                    break
        if party_persons and pf_party_persons:
            for rn, ri in pf_party_persons:
                if _person_match(rn, ri, party_persons):
                    is_match = True
                    match_reason.append(f"相对方匹配：{rn or ri or '身份证'}")
                    break
        
        # 承办人员精准匹配
        if undertaker and pf.Undertaker:
            if undertaker.strip() == pf.Undertaker.strip():
                is_match = True
                match_reason.append(f"承办人员匹配：{pf.Undertaker}")
        
        if is_match:
            matched_prefilings.append({
                'id': pf.id,
                'times': pf.times,
                'client_username': pf.client_username,
                'party_username': pf.party_username,
                'description': pf.description,
                'Undertaker': pf.Undertaker,
                'match_reason': normalize_match_reason('；'.join(match_reason) if match_reason else '匹配')
            })
    
    result['prefiling_conflicts'] = matched_prefilings
    
    # 2. 检索立项表
    project_q = Q(is_deleted=False)
    if exclude_project_id:
        project_q &= ~Q(id=exclude_project_id)
    
    project_records = ProjectRegistration.objects.filter(project_q)
    project_list = []
    
    for pro in project_records[:50]:
        is_match = False
        match_reason = []

        # 冲突规则：按「人」精准匹配，同一人必须姓名+身份证都一致才命中
        if client_persons and pro.client_info:
            pro_client_names, pro_client_ids, _ = _extract_all_person_info(pro.client_info)
            pro_client_persons = _person_pairs(pro_client_names, pro_client_ids)
            for rn, ri in pro_client_persons:
                if _person_match(rn, ri, client_persons):
                    is_match = True
                    match_reason.append("委托人匹配")
                    break
        if party_persons and pro.party_info:
            pro_party_names, pro_party_ids, _ = _extract_all_person_info(pro.party_info)
            pro_party_persons = _person_pairs(pro_party_names, pro_party_ids)
            for rn, ri in pro_party_persons:
                if _person_match(rn, ri, party_persons):
                    is_match = True
                    match_reason.append("相对方匹配")
                    break

        # 负责人精准匹配（与承办人字段完全一致才算匹配）
        if undertaker and pro.responsiblefor:
            try:
                responsiblefor_data = json.loads(pro.responsiblefor) if isinstance(pro.responsiblefor, str) else pro.responsiblefor
                if isinstance(responsiblefor_data, dict):
                    responsible_person = (responsiblefor_data.get('responsible_person') or '').strip()
                    main_lawyer = (responsiblefor_data.get('main_lawyer') or '').strip()
                    assistant_lawyer = (responsiblefor_data.get('assistant_lawyer') or '').strip()
                    case_manager_lawyer = (responsiblefor_data.get('case_manager_lawyer') or '').strip()
                    ut = undertaker.strip()
                    if ut == responsible_person or ut == main_lawyer or ut == assistant_lawyer or ut == case_manager_lawyer:
                        is_match = True
                        match_reason.append("负责人匹配")
            except (json.JSONDecodeError, TypeError):
                if undertaker.strip() == (pro.responsiblefor or '').strip():
                    is_match = True
                    match_reason.append("负责人匹配")
        
        if is_match:
            project_list.append({
                'id': pro.id,
                'ContractNo': pro.ContractNo,
                'times': pro.times,
                'type': pro.type,
                'client_info': pro.client_info,
                'party_info': pro.party_info,
                'description': pro.description,
                'responsiblefor': pro.responsiblefor,
                'match_reason': normalize_match_reason('；'.join(match_reason) if match_reason else '匹配')
            })
    
    result['project_conflicts'] = project_list
    
    # 3. 检索投标表
    bid_q = Q(is_deleted=False)
    if exclude_bid_id:
        bid_q &= ~Q(id=exclude_bid_id)
    
    bid_records = Bid.objects.filter(bid_q)
    bid_list = []
    
    for bid in bid_records[:50]:
        is_match = False
        match_reason = []

        # 从招标单位解析出人员列表，按「人」精准匹配（姓名+身份证都一致才命中）
        bid_names, bid_ids, _ = _extract_all_person_info(bid.BiddingUnit) if bid.BiddingUnit else ([], [], [])
        bid_persons = _person_pairs(bid_names, bid_ids)

        # 招标单位精准匹配：查询的招标单位与记录中某一人完全一致（姓名或证件号单独查时按原逻辑）
        if bidding_unit and bid.BiddingUnit:
            ut = bidding_unit.strip()
            ut_norm = _normalize_id(bidding_unit)
            for rn, ri in bid_persons:
                if ut == rn or (ut_norm and ut_norm == ri):
                    is_match = True
                    match_reason.append("招标单位匹配")
                    break

        # 委托人/相对方与招标单位：同一人姓名+身份证都一致才命中
        if client_persons and bid_persons:
            for rn, ri in bid_persons:
                if _person_match(rn, ri, client_persons):
                    is_match = True
                    match_reason.append("委托人匹配招标单位")
                    break
        if party_persons and bid_persons:
            for rn, ri in bid_persons:
                if _person_match(rn, ri, party_persons):
                    is_match = True
                    match_reason.append("相对方匹配招标单位")
                    break
        
        if is_match:
            bid_list.append({
                'id': bid.id,
                'ProjectName': bid.ProjectName,
                'times': bid.times,
                'BiddingUnit': bid.BiddingUnit,
                'state': bid.state,
                'match_reason': normalize_match_reason('；'.join(match_reason) if match_reason else '匹配')
            })
    
    result['bid_conflicts'] = bid_list
    
    return result


class ConflictSearch(APIView):
    """
    利益冲突检索查询接口
    比对预立案登记、投标登记、立项登记三张表，返回冲突数据
    """
    def post(self, request, *args, **kwargs):
        """
        利益冲突检索
        
        请求参数（至少提供一个）：
        - client_info: 委托人身份信息（可选），支持 JSON 字符串或普通字符串：
            * JSON 字符串：'[{"name":"张三","idNumber":"111"}]' 或 '{"name":"张三","idNumber":"111"}'
            * 普通字符串："张三（3263452342342342）"、"张三，身份证号：3263452342342342"、"张三"
        - party_info: 相对方身份信息（可选），格式同上
        - undertaker: 承办人员（可选）
        - bidding_unit: 招标单位（可选）
        - exclude_prefiling_id: 要排除的预立案ID（可选）
        - exclude_project_id: 要排除的立项ID（可选）
        - exclude_bid_id: 要排除的投标ID（可选）
        """
        # client_info / party_info 支持 JSON 字符串（如 '[{"name":"张三","idNumber":"111"}]'）或普通字符串
        client_info = request.data.get('client_info') or None
        party_info = request.data.get('party_info') or None
        # 如果是字符串，做 strip；如果是 list/dict 保持原样（conflict_search 内部会用 _extract_all_person_info 解析）
        if isinstance(client_info, str):
            client_info = client_info.strip() or None
        if isinstance(party_info, str):
            party_info = party_info.strip() or None
        undertaker = request.data.get('undertaker', '').strip() if request.data.get('undertaker') else None
        bidding_unit = request.data.get('bidding_unit', '').strip() if request.data.get('bidding_unit') else None
        exclude_prefiling_id = request.data.get('exclude_prefiling_id')
        exclude_project_id = request.data.get('exclude_project_id')
        exclude_bid_id = request.data.get('exclude_bid_id')
        
        # 至少需要提供一个查询条件
        if not any([client_info, party_info, undertaker, bidding_unit]):
            return Response({
                'status': 'error',
                'message': '至少需要提供一个查询条件（client_info、party_info、undertaker、bidding_unit之一）',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 执行冲突检索
        conflict_result = conflict_search(
            client_info=client_info,
            party_info=party_info,
            undertaker=undertaker,
            bidding_unit=bidding_unit,
            exclude_prefiling_id=exclude_prefiling_id,
            exclude_project_id=exclude_project_id,
            exclude_bid_id=exclude_bid_id
        )
        # 归一化冲突记录为前端期望格式 [{ index, name, idNumber }, ...]（预立案用 client_username/party_username，立项用 client_info/party_info，投标用 BiddingUnit）
        def _normalize_person_list(val):
            """
            归一化人员信息，始终返回 list[dict] 或 None。
            支持：
              - JSON 数组字符串：'[{"name":"张三","idNumber":"111"}]'
              - JSON 对象字符串：'{"name":"张三","idNumber":"111"}'
              - list / dict（已解析的 JSON）
              - 纯字符串："张三（111）"、"张三(111),李四(222)"
            """
            if not val:
                return []
            try:
                lst = json.loads(val) if isinstance(val, str) else val
                if isinstance(lst, dict):
                    lst = [lst]
                if not isinstance(lst, list):
                    raise ValueError("not a list")
                out = []
                for i, item in enumerate(lst):
                    if not isinstance(item, dict):
                        continue
                    name = item.get('name') or item.get('name_original') or ''
                    id_num = item.get('idNumber') or item.get('id_number') or ''
                    if not isinstance(name, str):
                        name = str(name) if name else ''
                    if not isinstance(id_num, str):
                        id_num = str(id_num) if id_num else ''
                    out.append({
                        'index': item.get('index') if isinstance(item.get('index'), (int, float)) else (i + 1),
                        'name': name,
                        'idNumber': id_num
                    })
                return out
            except (json.JSONDecodeError, TypeError, ValueError):
                pass

            # 回退：解析纯字符串格式（如 "张三（123456）" 或 "张三(123),李四(456)"）
            if isinstance(val, str):
                # 尝试匹配多个 "name(id)" 格式
                matches = re.findall(r'([^,，（(]+?)\s*[（(]([^）)]*)[）)]', val)
                if matches:
                    out = []
                    for i, (name, id_num) in enumerate(matches):
                        out.append({
                            'index': i + 1,
                            'name': name.strip(),
                            'idNumber': id_num.strip()
                        })
                    return out
                # 没有括号格式，尝试用 parse_person_info 解析
                parsed = parse_person_info(val)
                if parsed['name'] or parsed['id_number']:
                    return [{
                        'index': 1,
                        'name': parsed['name'],
                        'idNumber': parsed['id_number']
                    }]
            return None

        def _normalize_conflict_records(records):
            """
            归一化冲突记录，将人员信息字段统一转为 JSON 字符串格式：
            '[{"index":1,"name":"张三","idNumber":"123456"}]'
            确保前端可以使用 isValidFormat() + JSON.parse() 正确展示。
            """
            processed = []
            for record in records:
                new_record = dict(record)
                for key in ('client_info', 'party_info', 'BiddingUnit', 'client_username', 'party_username'):
                    if key not in new_record or not new_record[key]:
                        continue
                    normalized = _normalize_person_list(new_record[key])
                    if normalized is not None:
                        # 转为 JSON 字符串，兼容前端 JSON.parse() 展示
                        new_record[key] = json.dumps(normalized, ensure_ascii=False)
                processed.append(new_record)
            return processed

        prefiling = _normalize_conflict_records(conflict_result['prefiling_conflicts'])
        project = _normalize_conflict_records(conflict_result['project_conflicts'])
        bid = _normalize_conflict_records(conflict_result['bid_conflicts'])
        # 统计冲突数量
        total_conflicts = len(prefiling) + len(project) + len(bid)
        return Response({
            'message': '检索成功',
            'code': 0,
            'data': {
                'total_conflicts': total_conflicts,
                'prefiling_conflicts_count': len(prefiling),
                'project_conflicts_count': len(project),
                'bid_conflicts_count': len(bid),
                'prefiling_conflicts': prefiling,
                'project_conflicts': project,
                'bid_conflicts': bid
            }
        }, status=status.HTTP_200_OK)


# ==================== 案件标签管理接口 ====================

class CreateCaseTag(APIView):
    """创建案件标签"""
    def post(self, request, *args, **kwargs):
        name = request.data.get('name')
        color = request.data.get('color', '#1890ff')
        description = request.data.get('description', '')
        
        if not name:
            return Response({'status': 'error', 'message': '缺少参数：标签名称', 'code': 1}, 
                          status=status.HTTP_400_BAD_REQUEST)
        
        # 检查标签名是否已存在
        if CaseTag.objects.filter(name=name, is_deleted=False).exists():
            return Response({'status': 'error', 'message': '标签名称已存在', 'code': 1},
                          status=status.HTTP_400_BAD_REQUEST)
        
        import datetime
        now = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
        
        tag = CaseTag.objects.create(
            name=name,
            color=color,
            description=description,
            created_at=now,
            updated_at=now
        )
        
        # 记录操作日志
        log_operation(
            request=request,
            operation_type='CREATE',
            module='Business',
            action='创建案件标签',
            target_type='CaseTag',
            target_id=tag.id,
            target_name=tag.name,
            new_data={'name': name, 'color': color, 'description': description},
            remark=f'创建案件标签：{name}'
        )
        
        return Response({
            'message': '创建成功',
            'code': 0,
            'data': {
                'id': tag.id,
                'name': tag.name,
                'color': tag.color,
                'description': tag.description
            }
        }, status=status.HTTP_200_OK)


class CaseTagList(APIView):
    """案件标签列表"""
    def post(self, request, *args, **kwargs):
        page = request.data.get('page', 1)
        per_page = request.data.get('per_page', 10)
        name = request.data.get('name', '')  # 搜索标签名称
        
        Q_obj = Q(is_deleted=False)
        if name:
            Q_obj &= Q(name__icontains=name)
        
        tags = CaseTag.objects.filter(Q_obj).order_by('-id')
        total = len(tags)
        
        paginator = Paginator(tags, per_page)
        try:
            tags_page = paginator.page(page)
        except PageNotAnInteger:
            tags_page = paginator.page(1)
        except EmptyPage:
            tags_page = paginator.page(paginator.num_pages)
        
        data = []
        for tag in tags_page.object_list:
            # 统计使用该标签的案件数量
            case_count = tag.cases.filter(is_deleted=False).count()
            data.append({
                'id': tag.id,
                'name': tag.name,
                'color': tag.color,
                'description': tag.description,
                'case_count': case_count,  # 使用该标签的案件数量
                'created_at': tag.created_at,
                'updated_at': tag.updated_at
            })
        
        return Response({
            'message': '查询成功',
            'total': total,
            'data': data,
            'code': 0
        }, status=status.HTTP_200_OK)


class CaseTagDetail(APIView):
    """案件标签详情"""
    def post(self, request, *args, **kwargs):
        id = request.data.get('id')
        
        if not id:
            return Response({'status': 'error', 'message': '缺少参数：id', 'code': 1},
                          status=status.HTTP_400_BAD_REQUEST)
        
        try:
            tag = CaseTag.objects.get(id=id, is_deleted=False)
        except CaseTag.DoesNotExist:
            return Response({'status': 'error', 'message': '标签不存在', 'code': 1},
                          status=status.HTTP_404_NOT_FOUND)
        
        # 获取使用该标签的案件列表
        cases = tag.cases.filter(is_deleted=False)
        case_list = []
        for case in cases:
            case_list.append({
                'id': case.id,
                'contract_no': case.contract_no or '',
                'project_type': case.project_type or '',
                'client_name': case.client_name or '',
                'times': case.times
            })
        
        return Response({
            'message': '查询成功',
            'code': 0,
            'data': {
                'id': tag.id,
                'name': tag.name,
                'color': tag.color,
                'description': tag.description,
                'case_count': len(case_list),
                'cases': case_list,
                'created_at': tag.created_at,
                'updated_at': tag.updated_at
            }
        }, status=status.HTTP_200_OK)


class EditCaseTag(APIView):
    """编辑案件标签"""
    def post(self, request, *args, **kwargs):
        id = request.data.get('id')
        name = request.data.get('name')
        color = request.data.get('color')
        description = request.data.get('description')
        
        if not id:
            return Response({'status': 'error', 'message': '缺少参数：id', 'code': 1},
                          status=status.HTTP_400_BAD_REQUEST)
        
        try:
            tag = CaseTag.objects.get(id=id, is_deleted=False)
        except CaseTag.DoesNotExist:
            return Response({'status': 'error', 'message': '标签不存在', 'code': 1},
                          status=status.HTTP_404_NOT_FOUND)
        
        # 记录操作前的数据
        old_data = {
            'id': tag.id,
            'name': tag.name,
            'color': tag.color,
            'description': tag.description
        }
        
        update_fields = []
        if name:
            # 检查新名称是否已被其他标签使用
            if CaseTag.objects.filter(name=name, is_deleted=False).exclude(id=id).exists():
                return Response({'status': 'error', 'message': '标签名称已存在', 'code': 1},
                              status=status.HTTP_400_BAD_REQUEST)
            tag.name = name
            update_fields.append('name')
        
        if color:
            tag.color = color
            update_fields.append('color')
        
        if description is not None:
            tag.description = description
            update_fields.append('description')
        
        if update_fields:
            import datetime
            tag.updated_at = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
            update_fields.append('updated_at')
            tag.save(update_fields=update_fields)
            
            # 记录操作日志
            log_operation(
                request=request,
                operation_type='UPDATE',
                module='Business',
                action='编辑案件标签',
                target_type='CaseTag',
                target_id=tag.id,
                target_name=tag.name,
                old_data=old_data,
                new_data={'name': tag.name, 'color': tag.color, 'description': tag.description},
                remark=f'编辑案件标签：{tag.name}'
            )
        
        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)


class DeleteCaseTag(APIView):
    """删除案件标签"""
    def post(self, request, *args, **kwargs):
        id = request.data.get('id')
        
        if not id:
            return Response({'status': 'error', 'message': '缺少参数：id', 'code': 1},
                          status=status.HTTP_400_BAD_REQUEST)
        
        try:
            tag = CaseTag.objects.get(id=id, is_deleted=False)
        except CaseTag.DoesNotExist:
            return Response({'status': 'error', 'message': '标签不存在', 'code': 1},
                          status=status.HTTP_404_NOT_FOUND)
        
        # 记录操作前的数据
        old_data = {
            'id': tag.id,
            'name': tag.name,
            'color': tag.color,
            'description': tag.description
        }
        
        # 软删除：更新 is_deleted 字段
        tag.is_deleted = True
        tag.save()
        
        # 记录操作日志
        log_operation(
            request=request,
            operation_type='DELETE',
            module='Business',
            action='删除案件标签',
            target_type='CaseTag',
            target_id=tag.id,
            target_name=tag.name,
            old_data=old_data,
            remark=f'删除案件标签：{tag.name}'
        )
        
        return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)


class CaseTagDropdownList(APIView):
    """获取标签下拉列表（用于案件管理中选择标签）"""
    def post(self, request, *args, **kwargs):
        tags = CaseTag.objects.filter(is_deleted=False).order_by('name')
        data = []
        for tag in tags:
            data.append({
                'id': tag.id,
                'name': tag.name,
                'color': tag.color
            })
        return Response({
            'message': '查询成功',
            'data': data,
            'code': 0
        }, status=status.HTTP_200_OK)


class SetCaseTags(APIView):
    """给案件设置标签"""
    def post(self, request, *args, **kwargs):
        """
        给案件设置标签
        支持设置多个标签，也可以清空所有标签
        """
        case_id = request.data.get('case_id')
        tag_ids = request.data.get('tag_ids')  # 标签ID列表（数组或逗号分隔的字符串）
        
        if not case_id:
            return Response({
                'status': 'error',
                'message': '缺少参数：case_id（案件ID）',
                'code': 1
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 验证案件是否存在
        try:
            case = Case.objects.get(id=case_id, is_deleted=False)
        except Case.DoesNotExist:
            return Response({
                'status': 'error',
                'message': '案件不存在或已被删除',
                'code': 1
            }, status=status.HTTP_404_NOT_FOUND)
        
        # 记录操作前的标签
        old_tags = list(case.tags.filter(is_deleted=False).values('id', 'name'))
        old_tag_ids = [tag['id'] for tag in old_tags]
        
        # 处理标签ID列表
        tag_id_list = []
        if tag_ids is not None:
            try:
                # 支持数组或逗号分隔的字符串
                if isinstance(tag_ids, str):
                    if tag_ids.strip() == '':
                        tag_id_list = []  # 空字符串表示清空所有标签
                    elif ',' in tag_ids:
                        tag_id_list = [int(x.strip()) for x in tag_ids.split(',') if x.strip()]
                    else:
                        tag_id_list = [int(tag_ids)]
                elif isinstance(tag_ids, list):
                    tag_id_list = [int(x) for x in tag_ids if x]
                else:
                    tag_id_list = []
            except (ValueError, TypeError) as e:
                return Response({
                    'status': 'error',
                    'message': f'标签ID格式错误：{str(e)}',
                    'code': 1
                }, status=status.HTTP_400_BAD_REQUEST)
        
        # 验证标签是否存在
        if tag_id_list:
            valid_tags = CaseTag.objects.filter(id__in=tag_id_list, is_deleted=False)
            valid_tag_ids = list(valid_tags.values_list('id', flat=True))
            
            # 检查是否有无效的标签ID
            invalid_tag_ids = set(tag_id_list) - set(valid_tag_ids)
            if invalid_tag_ids:
                return Response({
                    'status': 'error',
                    'message': f'以下标签ID不存在或已被删除：{", ".join(map(str, invalid_tag_ids))}',
                    'code': 1
                }, status=status.HTTP_400_BAD_REQUEST)
            
            # 设置标签关联
            case.tags.set(valid_tags)
        else:
            # 清空所有标签
            case.tags.clear()
        
        # 获取更新后的标签信息
        new_tags = list(case.tags.filter(is_deleted=False).values('id', 'name', 'color'))
        new_tag_ids = [tag['id'] for tag in new_tags]
        
        # 记录操作日志
        log_operation(
            request=request,
            operation_type='UPDATE',
            module='Business',
            action='设置案件标签',
            target_type='Case',
            target_id=case.id,
            target_name=case.contract_no or f'案件ID-{case.id}',
            old_data={'tag_ids': old_tag_ids, 'tags': old_tags},
            new_data={'tag_ids': new_tag_ids, 'tags': new_tags},
            remark=f'设置案件标签：案件ID {case_id}，标签ID {new_tag_ids}'
        )
        
        return Response({
            'message': '设置成功',
            'code': 0,
            'data': {
                'case_id': case.id,
                'tags': new_tags,
                'tag_ids': new_tag_ids
            }
        }, status=status.HTTP_200_OK)


class CaseListByTag(APIView):
    """按标签筛选案件列表"""
    def post(self, request, *args, **kwargs):
        """
        根据标签ID筛选案件列表
        """
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        tag_ids = request.data.get('tag_ids')  # 标签ID列表（数组或逗号分隔的字符串）
        times = request.data.get('times')
        end_time = request.data.get('end_time')
        type = request.data.get('type')
        
        if not all([page, per_page]):
            return Response({'status': 'error', 'message': '缺少参数：page和per_page', 'code': 1}, 
                          status=status.HTTP_400_BAD_REQUEST)
        
        if not tag_ids:
            return Response({'status': 'error', 'message': '缺少参数：tag_ids', 'code': 1}, 
                          status=status.HTTP_400_BAD_REQUEST)
        
        # 解析标签ID
        try:
            if isinstance(tag_ids, str):
                if ',' in tag_ids:
                    tag_id_list = [int(x.strip()) for x in tag_ids.split(',') if x.strip()]
                else:
                    tag_id_list = [int(tag_ids)]
            elif isinstance(tag_ids, list):
                tag_id_list = [int(x) for x in tag_ids if x]
            else:
                tag_id_list = []
        except (ValueError, TypeError):
            return Response({'status': 'error', 'message': '标签ID格式错误', 'code': 1},
                          status=status.HTTP_400_BAD_REQUEST)
        
        if not tag_id_list:
            return Response({'status': 'error', 'message': '标签ID列表为空', 'code': 1},
                          status=status.HTTP_400_BAD_REQUEST)
        
        # 验证标签是否存在
        valid_tags = CaseTag.objects.filter(id__in=tag_id_list, is_deleted=False)
        if not valid_tags.exists():
            return Response({'status': 'error', 'message': '标签不存在', 'code': 1},
                          status=status.HTTP_404_NOT_FOUND)
        
        # 构建查询条件
        Q_obj = Q(is_deleted=False)
        
        # 按标签筛选（多标签取交集，即案件必须同时拥有所有指定标签）
        for tag_id in tag_id_list:
            Q_obj &= Q(tags__id=tag_id)
        
        # 时间范围筛选
        if times and end_time:
            Q_obj &= Q(times__gte=times) & Q(times__lte=end_time)
        
        # 项目类型筛选
        if type:
            por_id = ProjectRegistration.objects.filter(type=type, is_deleted=False).values_list('id', flat=True)
            Q_obj &= Q(project_id__in=por_id)
        
        # 查询案件（使用distinct去重，因为多对多关系可能产生重复）
        cases = Case.objects.filter(Q_obj).distinct().order_by('-id')
        total = len(cases)
        
        paginator = Paginator(cases, per_page)
        try:
            cases_page = paginator.page(page)
        except PageNotAnInteger:
            cases_page = paginator.page(1)
        except EmptyPage:
            cases_page = paginator.page(paginator.num_pages)
        
        data = []
        for info in cases_page.object_list:
            pro = None
            if info.project_id:
                try:
                    pro = ProjectRegistration.objects.get(id=info.project_id, is_deleted=False)
                except ProjectRegistration.DoesNotExist:
                    pro = None
            
            contract_no = info.contract_no or (pro.ContractNo if pro else None)
            project_type = info.project_type or (pro.type if pro else None)
            client_name = info.client_name or (pro.client_info if pro else None)
            party_name = info.party_name or (pro.party_info if pro else None)
            project_description = info.project_description or (pro.description if pro else None)
            responsiblefor_raw = info.responsiblefor or (pro.responsiblefor if pro else None)
            charge = info.charge or (pro.charge if pro else None)
            
            # 解析负责人信息
            try:
                responsiblefor_dict = json.loads(responsiblefor_raw) if responsiblefor_raw else {}
            except (json.JSONDecodeError, TypeError):
                responsiblefor_dict = responsiblefor_raw if responsiblefor_raw else {}
            
            # 解析结案申请；代理合同已从案件管理移除，不再返回
            try:
                closing_application_list = json.loads(info.Closingapplication) if info.Closingapplication else []
            except (json.JSONDecodeError, TypeError):
                closing_application_list = []
            
            if not closing_application_list:
                closing_application_list = ""
            
            contractreturn_str = info.Contractreturn or ""
            if contractreturn_str.strip() in ["[]", ""]:
                contractreturn_str = ""
            
            closing_application_str = info.Closingapplication or ""
            if closing_application_str.strip() in ["[]", ""]:
                closing_application_str = ""
            
            # 处理已开票/已收款字段
            invoice_status_value = normalize_amount_value(info.invoice_status)
            paymentcollection_value = normalize_amount_value(info.paymentcollection)
            
            # 获取案件标签
            tags = info.tags.filter(is_deleted=False)
            tag_list = []
            for tag in tags:
                tag_list.append({
                    'id': tag.id,
                    'name': tag.name,
                    'color': tag.color
                })
            
            data.append({
                "id": info.id,
                "ContractNo": contract_no or "",
                "type": project_type or "",
                "client_info": client_name or "",
                "party_info": party_name or "",
                "description": project_description,
                "responsiblefor": responsiblefor_dict,
                "charge": charge,
                'times': info.times,
                "Contractreturn": contractreturn_str,  # 合同返还（没有数据时返回空字符串）
                "Closingapplication": closing_application_str,  # 结案申请（JSON字符串，没有文件时返回空字符串）
                "ClosingapplicationUrls": closing_application_list if closing_application_list else "",  # 结案申请（URL列表，没有文件时返回空字符串）
                "ChangeRequest": info.ChangeRequest,
                "ChangeItem": info.ChangeItem,
                "ChangeReason": info.ChangeReason,
                "ChangeAgreement": info.ChangeAgreement,
                "invoice_status": invoice_status_value,
                "paymentcollection": paymentcollection_value,
                "state": info.state,
                "project_id": info.project_id,
                "tags": tag_list,
                "tag_ids": [tag['id'] for tag in tag_list],
            })
        
        return Response({
            'message': '查询成功',
            "total": total,
            'data': data,
            'code': 0
        }, status=status.HTTP_200_OK)

class PropagandaEit(APIView):
    def post(self, request):
        content = request.data.get('content')
        pro = Propaganda.objects.get(id="1")
        pro.content = content
        pro.save()
        return Response({
            'message': '更新成功',
            'code': 0
        }, status=status.HTTP_200_OK)


class addSystem(APIView):
    def post(self, request):
        title = request.data.get('title')
        content = request.data.get('content')
        file = request.FILES.getlist('file')
        state = request.data.get('state')
        token = request.META.get('token')

        if not all([title, content]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        now = datetime.now()
        date_str = now.strftime('%Y-%m-%d')
        bol = 0
        if state == "置顶":
            bol = 1

        user = User.objects.get(token=token, is_deleted=False).username
        System.objects.create(
            title=title,
            content=content,
            file=json.dumps(flies(file)),
            username=user,
            times=date_str,
            state=bol
        )
        return Response({'message': '添加成功', 'code': 0}, status=status.HTTP_200_OK)

class SystemList(APIView):
    def post(self, request):
        page = request.data.get('page')
        per_page = request.data.get('per_page')
        seas = System.objects.filter(is_deleted=False).order_by('-state', '-times')
        total = len(seas)

        paginator = Paginator(seas, per_page)
        try:
            user_agents_page = paginator.page(page)

        except PageNotAnInteger:
            user_agents_page = paginator.page(1)
        except EmptyPage:
            user_agents_page = paginator.page(paginator.num_pages)
        data = []
        for info in user_agents_page.object_list:
            # 解析 file 字段：有文件返回数组，无文件返回空字符串
            try:
                file_list = json.loads(info.file) if info.file else []
            except (json.JSONDecodeError, TypeError):
                file_list = []
            # 空列表返回空字符串
            file_result = file_list if file_list else ""
            if file_result !="":
                file_result = json.dumps(file_result)
            data.append({
                "id": info.id,
                "title": info.title,
                "content": info.content,
                "times": info.times,
                "file": file_result,  # file 字段解析,
                "username": info.username,
                "state": info.state,
            })

        return Response({'message': '展示成功', "total": total, 'data': data, 'code': 0}, status=status.HTTP_200_OK)

class eitSystem(APIView):
    def post(self, request):
        ID = request.data.get('id')
        title = request.data.get('title')
        content = request.data.get('content')
        file = request.FILES.getlist('file')
        state = request.data.get('state')
        token = request.META.get('token')  # 从中间件设置的 token 获取

        if not all([title, content, ID]):
            return Response({'status': 'error', 'message': '缺少参数', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)

        try:
            system_record = System.objects.get(id=ID, is_deleted=False)
        except System.DoesNotExist:
            return Response({'status': 'error', 'message': '系统公告不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)

        now = datetime.now()
        date_str = now.strftime('%Y-%m-%d')

        if state:
            bol = 0
            if state == "置顶":
                bol = 1
            system_record.state = bol
            system_record.save(update_fields=['state'])

        # 获取用户信息（如果 token 存在）
        if token:
            try:
                user = User.objects.get(token=token, is_deleted=False).username
            except User.DoesNotExist:
                # 如果用户不存在，使用原有用户名
                user = system_record.username
        else:
            # 如果 token 不存在，使用原有用户名
            user = system_record.username

        if title:
            system_record.title = title
            system_record.save(update_fields=['title'])
        if content:
            system_record.content = content
            system_record.save(update_fields=['content'])
        if file:
            system_record.file = json.dumps(flies(file))  # 使用 flies 函数处理文件
            system_record.save(update_fields=['file'])

        system_record.username = user
        system_record.times = date_str

        system_record.save(update_fields=['username', 'times'])
        return Response({'message': '编辑成功', 'code': 0}, status=status.HTTP_200_OK)

class deleteSystem(APIView):
    def post(self, request, *args, **kwargs):
        ID = request.data.get('id')
        try:
            system_record = System.objects.get(id=ID, is_deleted=False)
            # 软删除：更新 is_deleted 字段
            system_record.is_deleted = True
            system_record.save()
            return Response({'message': '删除成功', 'code': 0}, status=status.HTTP_200_OK)
        except System.DoesNotExist:
            return Response({'status': 'error', 'message': '系统公告不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)


class ExportCaseLogExcel(APIView):
    def post(self, request, *args, **kwargs):
        """
        导出指定案件的日志到Excel，上传到OSS并返回下载链接
        必填参数：case_id（案件ID）
        可选参数：start_time（开始时间）、end_time（结束时间）
        返回：下载链接
        """
        import pandas as pd
        import oss2
        import uuid
        from io import BytesIO
        
        case_id = request.data.get('case_id')
        start_time = request.data.get('start_time')
        end_time = request.data.get('end_time')
        
        if not case_id:
            return Response({'status': 'error', 'message': '缺少参数case_id', 'code': 1}, status=status.HTTP_400_BAD_REQUEST)
        
        # 获取案件信息
        try:
            case = Case.objects.get(id=case_id, is_deleted=False)
        except Case.DoesNotExist:
            return Response({'status': 'error', 'message': '案件不存在', 'code': 1}, status=status.HTTP_404_NOT_FOUND)
        
        # 构建查询条件
        Q_obj = Q(is_deleted=False, case_id=case_id)
        if start_time:
            Q_obj &= Q(times__gte=start_time)
        if end_time:
            Q_obj &= Q(times__lte=end_time)
        
        # 查询日志
        logs = Caselog.objects.filter(Q_obj).order_by('-times', '-id')
        
        if not logs.exists():
            return Response({'status': 'error', 'message': '该案件没有日志记录', 'code': 1}, status=status.HTTP_404_NOT_FOUND)
        
        # 构建Excel数据（只保留：记录人、记录时间、工作内容）
        excel_data = []
        for log in logs:
            excel_data.append({
                '记录人': log.username or '',
                '记录时间': log.times or '',
                '工作内容': log.content or '',
            })
        
        # 生成Excel文件
        df = pd.DataFrame(excel_data)
        output = BytesIO()
        with pd.ExcelWriter(output, engine='openpyxl') as writer:
            df.to_excel(writer, index=False, sheet_name='案件日志')
            ws = writer.sheets['案件日志']
            for idx, col in enumerate(df.columns):
                width = min(max(df[col].astype(str).map(len).max(), len(col)) + 2, 50)
                ws.column_dimensions[chr(65 + idx) if idx < 26 else chr(64 + idx // 26) + chr(65 + idx % 26)].width = width
        
        output.seek(0)
        
        # 上传到阿里云OSS
        try:
            endpoint = 'https://oss-cn-beijing.aliyuncs.com'
            access_key_id = "LTAI5tRMxrM95Pi8JEEmqRcg"
            access_key_secret = "8vueGCsRVeFyQMcAA7sysO7LSnuJDG"
            bucket_name = 'oss-bucket-yj'
            
            auth = oss2.Auth(access_key_id, access_key_secret)
            bucket = oss2.Bucket(auth, endpoint, bucket_name)
            
            # 生成唯一文件名
            contract_no_safe = (case.contract_no or f'case{case_id}').replace('/', '_').replace('\\', '_')
            filename = f'{uuid.uuid4().hex[:12]}_{contract_no_safe}_日志_{datetime.now().strftime("%Y%m%d%H%M%S")}.xlsx'
            
            # 上传文件
            result = bucket.put_object(filename, output.getvalue())
            
            if result.status == 200:
                # 生成下载链接
                download_url = f'http://{bucket_name}.{endpoint.replace("https://", "")}/{filename}'
                return Response({
                    'message': '导出成功',
                    'code': 0,
                    'data': {
                        'url': download_url,
                        'filename': f'{case.contract_no or f"案件{case_id}"}_日志.xlsx'
                    }
                }, status=status.HTTP_200_OK)
            else:
                return Response({'status': 'error', 'message': '文件上传失败', 'code': 1}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
        except Exception as e:
            return Response({'status': 'error', 'message': f'文件上传失败: {str(e)}', 'code': 1}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)