"""
审批相关的工具函数
"""
import json
from datetime import datetime, date
from .models import OperationLog, User, Team, Approval, Department

def is_department_id(value):
    """
    判断personincharge字段的值是部门ID还是审批员用户名
    
    统一规则：
    - 如果是纯数字字符串（如 "1", "2", "123"），表示部门ID
    - 如果包含非数字字符（如 "张三", "李四"），表示审批员用户名
    
    Args:
        value: personincharge字段的值（字符串）
    
    Returns:
        bool: True表示是部门ID，False表示是审批员用户名
    
    示例:
        >>> is_department_id("1")
        True
        >>> is_department_id("123")
        True
        >>> is_department_id("张三")
        False
        >>> is_department_id("dept:1")
        False
    """
    if not value:
        return False
    # 判断是否为纯数字字符串（去除首尾空格）
    return str(value).strip().isdigit()


def format_personincharge(value, is_department=False):
    """
    格式化personincharge字段的值
    
    统一规则：
    - 如果是部门ID，确保是纯数字字符串
    - 如果是审批员用户名，保持原样
    
    Args:
        value: 部门ID（整数或字符串）或审批员用户名（字符串）
        is_department: 是否为部门ID，默认False（审批员用户名）
    
    Returns:
        str: 格式化后的personincharge值
    """
    if not value:
        return ''
    
    if is_department:
        # 部门ID：转换为字符串，确保是纯数字
        try:
            return str(int(value))
        except (ValueError, TypeError):
            raise ValueError(f"部门ID必须是数字，当前值: {value}")
    else:
        # 审批员用户名：保持原样，但确保是字符串
        return str(value).strip()


def get_finance_personincharge_candidates():
    """
    获取财务部抄送的负责人标识列表，优先使用部门ID，其次回退字符串“财务”。
    返回按优先级去重的字符串列表，便于 personincharge 匹配和查询。
    
    返回值优先级：
    1. 财务部门ID（如果数据库中存在财务部门）
    2. "财务" 字符串（兼容历史数据）
    3. "财务部" 字符串（兼容历史数据）
    """
    import logging
    logger = logging.getLogger(__name__)
    
    candidates = []
    try:
        # 查询数据库获取财务部门ID（部门名称包含"财务"的部门）
        finance_depts = Department.objects.filter(
            is_deleted=False,
            username__icontains="财务"
        ).values_list("id", "username")
        
        for dept_id, dept_name in finance_depts:
            candidates.append(str(dept_id))
            logger.debug(f"get_finance_personincharge_candidates: 找到财务部门 ID={dept_id}, 名称={dept_name}")
        
        if not candidates:
            logger.warning("get_finance_personincharge_candidates: 数据库中未找到财务部门，将使用回退字符串")
    except Exception as e:
        logger.error(f"get_finance_personincharge_candidates: 查询财务部门失败: {e}")

    # 回退保留原有字符串标识，兼容历史数据（包括"财务"和"财务部"两种格式）
    candidates.append("财务")
    candidates.append("财务部")

    # 去重保持顺序
    uniq = []
    seen = set()
    for item in candidates:
        if item is None:
            continue
        item_str = str(item)
        if item_str not in seen:
            uniq.append(item_str)
            seen.add(item_str)
    
    logger.debug(f"get_finance_personincharge_candidates: 返回候选列表={uniq}")
    return uniq


def get_finance_personincharge_value():
    """
    获取优先的财务抄送标识（用于写入 personincharge 字段）。
    
    返回值：
    - 优先返回财务部门ID（字符串形式）
    - 如果数据库中没有财务部门，回退到 "财务" 字符串
    """
    import logging
    logger = logging.getLogger(__name__)
    
    candidates = get_finance_personincharge_candidates()
    result = candidates[0] if candidates else "财务"
    
    # 判断返回值是否为部门ID（纯数字字符串）
    is_dept_id = result.isdigit()
    logger.info(f"get_finance_personincharge_value: 返回值={result}, 是否为部门ID={is_dept_id}")
    
    return result


def get_law_firm_leader(team_name=None):
    """
    获取律所负责人
    优先从团队负责人获取，如果没有则从管委会角色获取
    
    Args:
        team_name: 团队名称（可选）
    
    Returns:
        str: 律所负责人用户名，如果找不到则返回None
    """
    try:
        # 如果提供了团队名称，尝试从团队获取负责人
        if team_name:
            from .models import Team
            try:
                team = Team.objects.get(name=team_name, is_deleted=False)
                # 获取团队的第一个审核人作为负责人
                approvers = team.approvers.filter(is_deleted=False)
                if approvers.exists():
                    return approvers.first().username
            except Team.DoesNotExist:
                pass
        
        # 如果没有团队负责人，尝试从管委会角色获取
        from .models import User
        from business.models import role
        try:
            # 查找有"管委会"角色的用户
            management_users = User.objects.filter(
                role__RoleName__icontains="管委会",
                is_deleted=False
            ).distinct()
            if management_users.exists():
                return management_users.first().username
        except:
            pass
        
        return None
    except Exception as e:
        import logging
        logger = logging.getLogger(__name__)
        logger.error(f"获取律所负责人失败: {str(e)}")
        return None


def is_finance_personincharge(value):
    """判断 personincharge 是否表示财务部门抄送（部门ID或“财务”字符串）。"""
    if value is None:
        return False
    return str(value) in get_finance_personincharge_candidates()


def log_operation(request, operation_type, module, action, target_type, target_id=None, 
                  target_name=None, old_data=None, new_data=None, remark=None):
    """
    记录操作日志
    
    Args:
        request: Django request对象
        operation_type: 操作类型（DELETE, CREATE, UPDATE, APPROVE等）
        module: 模块名称（User, Business, Finance等）
        action: 操作描述（如"删除用户"、"创建立项"等）
        target_type: 目标类型（如User, ProjectRegistration等）
        target_id: 目标ID
        target_name: 目标名称（如用户名、项目名等）
        old_data: 操作前的数据（字典，会自动转换为JSON）
        new_data: 操作后的数据（字典，会自动转换为JSON）
        remark: 备注信息
    
    Returns:
        OperationLog对象
    """
    try:
        # 获取操作人信息
        token = request.META.get('token') or request.META.get('HTTP_AUTHORIZATION', '').replace('Bearer ', '')
        operator = '未知用户'
        operator_id = None
        
        if token:
            user = User.objects.filter(token=token, is_deleted=False).first()
            if user:
                operator = user.username
                operator_id = user.id
        
        # 获取IP地址
        ip_address = request.META.get('HTTP_X_FORWARDED_FOR', '').split(',')[0].strip()
        if not ip_address:
            ip_address = request.META.get('REMOTE_ADDR', '')
        
        # 获取用户代理
        user_agent = request.META.get('HTTP_USER_AGENT', '')
        
        # 转换数据为JSON字符串
        old_data_str = json.dumps(old_data, ensure_ascii=False) if old_data else None
        new_data_str = json.dumps(new_data, ensure_ascii=False) if new_data else None
        
        # 创建日志记录
        log = OperationLog.objects.create(
            operator=operator,
            operator_id=operator_id,
            operation_type=operation_type,
            module=module,
            action=action,
            target_type=target_type,
            target_id=str(target_id) if target_id else None,
            target_name=target_name,
            old_data=old_data_str,
            new_data=new_data_str,
            ip_address=ip_address,
            user_agent=user_agent,
            request_path=request.path,
            remark=remark
        )
        return log
    except Exception as e:
        # 日志记录失败不应该影响主业务流程
        import logging
        logger = logging.getLogger(__name__)
        logger.error(f"记录操作日志失败: {str(e)}")
        return None


def create_team_approval(team_name, title, content, approval_type, user_id, request=None):
    """
    根据团队类型创建审批流程
    
    规则：
    - 个人团队（personal）：不需要审核人，直接抄送财务（personincharge设为财务部ID）
    - 团队（team）：需要指定审核人（可以多个），审核通过后才抄送财务
    
    注意：personincharge字段统一使用财务部ID（优先）或回退到"财务"字符串
    
    Args:
        team_name: 团队名称
        title: 审批标题
        content: 审批内容
        approval_type: 审批类型（如"立项登记"、"付款申请"等）
        user_id: 关联的业务ID（字符串）
        request: Django request对象（可选，用于记录日志）
    
    Returns:
        Approval对象或None
    """
    try:
        # 查找团队
        team = Team.objects.prefetch_related('approvers').filter(name=team_name, is_deleted=False).first()
        
        if not team:
            # 如果找不到团队，使用默认流程（需要审核人）
            return None
        
        today = datetime.now().strftime("%Y-%m-%d")
        
        if team.team_type == 'personal':
            # 个人团队：直接抄送财务，不需要审核人
            # 使用财务部ID（优先）或回退到"财务"字符串
            finance_personincharge = get_finance_personincharge_value()
            approval = Approval.objects.create(
                title=title,
                content=content,
                times=today,
                personincharge=finance_personincharge,  # 使用财务部ID
                state='已抄送财务',  # 直接标记为已抄送财务
                type=approval_type,
                user_id=str(user_id)
            )
            return approval
        
        elif team.team_type == 'team':
            # 团队：需要审核人审核
            approvers = team.approvers.filter(is_deleted=False)
            if not approvers.exists():
                # 如果没有审核人，返回None（应该在前端验证）
                return None
            
            # 将审核人用户名用逗号连接（多个审核人）
            approver_names = ','.join([approver.username for approver in approvers])
            
            approval = Approval.objects.create(
                title=title,
                content=content,
                times=today,
                personincharge=approver_names,  # 多个审核人用逗号分隔
                state='审核中',
                type=approval_type,
                user_id=str(user_id)
            )
            return approval
        
        return None
    
    except Exception as e:
        import logging
        logger = logging.getLogger(__name__)
        logger.error(f"创建团队审批失败: {str(e)}")
        return None


def get_team_approval_info(team_name):
    """
    获取团队的审批信息
    
    Args:
        team_name: 团队名称
    
    Returns:
        dict: {
            'team_type': 'personal' 或 'team',
            'needs_approval': True/False,  # 是否需要审核
            'approvers': [{'id': 1, 'username': '张三'}, ...],  # 审核人列表
            'direct_to_finance': True/False  # 是否直接抄送财务
        }
    """
    try:
        team = Team.objects.prefetch_related('approvers').filter(name=team_name, is_deleted=False).first()
        
        if not team:
            return {
                'team_type': None,
                'needs_approval': True,  # 默认需要审核
                'approvers': [],
                'direct_to_finance': False
            }
        
        approvers = list(team.approvers.filter(is_deleted=False).values('id', 'username'))
        
        return {
            'team_type': team.team_type,
            'needs_approval': team.team_type == 'team',
            'approvers': approvers,
            'direct_to_finance': team.team_type == 'personal'
        }
    
    except Exception as e:
        import logging
        logger = logging.getLogger(__name__)
        logger.error(f"获取团队审批信息失败: {str(e)}")
        return {
            'team_type': None,
            'needs_approval': True,
            'approvers': [],
            'direct_to_finance': False
        }


def normalize_approvers_param(approvers, personincharge):
    """
    兼容旧接口：如果未传 approvers，则使用 personincharge。
    personincharge 支持单个值、逗号分隔字符串或列表格式。
    """
    if approvers:
        return approvers
    if personincharge:
        return personincharge
    return approvers


def build_missing_approvers_message(team_name, approvers):
    """
    统一生成“缺少审核人”的详细错误文案
    适用于团队类型需要审批但未能解析到有效审核人的情况
    """
    try:
        approvers_missing = approvers is None
        approvers_empty = approvers == "" or approvers == []
        approvers_provided = not approvers_missing and not approvers_empty
        team = None
        if team_name:
            team = Team.objects.prefetch_related('approvers').filter(
                name=team_name, is_deleted=False
            ).first()

        if not team_name:
            return "当前用户未绑定团队，无法自动获取审核人，请传 approvers 参数或先配置团队。"

        if not team:
            return f'团队"{team_name}"不存在或已被删除，请检查团队配置或传 approvers 参数。'

        if team.team_type != "team":
            return f'团队"{team_name}"为个人团队，无需审核人。'

        if approvers_empty:
            return "已传 approvers 但为空，请传入有效的审核人列表（推荐ID数组，如[1,2,3]）。"

        if approvers_provided:
            approvers_list = parse_approvers(approvers)
            if not approvers_list:
                return "已传 approvers 但解析失败，请按推荐格式传入用户ID数组，如 [1,2,3]。"
            invalid = [
                name for name in approvers_list
                if not User.objects.filter(username=name, is_deleted=False).exists()
            ]
            if invalid and len(invalid) == len(approvers_list):
                return f'已传 approvers，但全部审核人无效/不存在：{", ".join(invalid)}。请更换有效审核人或调整团队配置。'
            if invalid:
                return f'已传 approvers，但部分审核人无效：{", ".join(invalid)}。请移除无效人员或补充有效审核人。'
            return "审核人参数已传入但审批创建失败，请检查团队配置或权限。"

        # 未传 approvers，尝试使用团队配置
        team_approvers = list(
            team.approvers.filter(is_deleted=False).values_list("username", flat=True)
        )
        if not team_approvers:
            return f'未传 approvers，且团队"{team_name}"未配置审核人，请先配置团队审核人或传 approvers 参数。'

        valid_team_approvers = [
            name for name in team_approvers
            if User.objects.filter(username=name, is_deleted=False).exists()
        ]
        if not valid_team_approvers:
            return f'未传 approvers，且团队"{team_name}"配置的审核人无效或已被删除，请重新配置或传 approvers 参数。'

        return (
            f'未传 approvers。团队"{team_name}"为团队类型，需要审核人。团队当前审核人：'
            f'{", ".join(valid_team_approvers)}。'
            '请传 approvers 参数（推荐ID数组，如[1,2,3]），或调整团队审核人配置。'
        )
    except Exception:
        return "团队类型需要指定审核人，请提供 approvers 参数并检查团队配置。"


def parse_approvers(approvers):
    """
    解析审核人列表，统一处理数组和字符串格式
    支持用户ID列表（推荐）和用户名列表（兼容旧接口）
    
    Args:
        approvers: 审核人列表，可以是：
            - 数组格式（ID列表，推荐）：[1, 2, 3] 或 ["1", "2", "3"]
            - 数组格式（用户名列表，兼容）：["张三", "李四", "王五"]
            - JSON字符串格式（ID列表）："[1,2,3]" 或 "[5]" 或 '"[1,2,3]"'
            - JSON字符串格式（带空格）："[ 5 ]" 或 "[1, 2, 3]"
            - JSON字符串格式（用户名列表，兼容）：'["张三","李四","王五"]'
            - 字符串格式（逗号分隔的ID）："1,2,3" 或 "5"
            - 字符串格式（逗号分隔的用户名，兼容）："张三,李四,王五"
            - None: 返回空列表
    
    Returns:
        list: 审核人用户名列表，如 ["张三", "李四", "王五"]
    """
    import json
    
    if not approvers:
        return []
    
    approvers_list = []
    
    if isinstance(approvers, str):
        # 去除首尾空格
        approvers = approvers.strip()
        
        # 如果字符串为空，返回空列表
        if not approvers:
            return []
        
        # 尝试解析 JSON 字符串格式（如 "[1,2,3]" 或 "[5]" 或 '"[1,2,3]"'）
        try:
            # 先尝试直接解析 JSON
            parsed = json.loads(approvers)
            if isinstance(parsed, list):
                approvers_list = [str(a).strip() for a in parsed if a is not None and str(a).strip()]
            elif isinstance(parsed, str):
                # 如果是字符串，可能是被双重编码的JSON字符串，再解析一次
                # 例如：'"[5]"' -> "[5]" -> [5]
                try:
                    parsed2 = json.loads(parsed)
                    if isinstance(parsed2, list):
                        approvers_list = [str(a).strip() for a in parsed2 if a is not None and str(a).strip()]
                    elif isinstance(parsed2, (int, str)):
                        # 单个值，转换为列表
                        approvers_list = [str(parsed2).strip()]
                except (json.JSONDecodeError, ValueError, TypeError):
                    # 双重解析失败，可能是普通字符串，按逗号分隔处理
                    approvers_list = [parsed.strip()] if parsed.strip() else []
            elif isinstance(parsed, (int, str)):
                # 单个值（数字或字符串），转换为列表
                approvers_list = [str(parsed).strip()]
        except (json.JSONDecodeError, ValueError, TypeError):
            # JSON 解析失败，尝试按逗号分隔处理
            # 例如："1,2,3" 或 "5" 或 "张三,李四"
            approvers_list = [a.strip() for a in approvers.split(',') if a.strip()]
    elif isinstance(approvers, list):
        # 数组格式（推荐）
        approvers_list = [str(a).strip() for a in approvers if a is not None and str(a).strip()]
    elif isinstance(approvers, (int, float)):
        # 单个数字，转换为列表
        approvers_list = [str(int(approvers))]
    else:
        return []
    
    if not approvers_list:
        return []
    
    # 判断是ID还是用户名：如果第一个元素是纯数字，则认为是ID列表
    # 否则认为是用户名列表（兼容旧接口）
    first_item = approvers_list[0]
    is_id_list = str(first_item).strip().isdigit()
    
    if is_id_list:
        # ID列表：转换为用户名列表
        try:
            user_ids = [int(uid) for uid in approvers_list]
            users = User.objects.filter(id__in=user_ids, is_deleted=False)
            # 保持原有顺序
            user_dict = {user.id: user.username for user in users}
            username_list = [user_dict.get(uid, None) for uid in user_ids]
            # 过滤掉不存在的用户
            username_list = [name for name in username_list if name is not None]
            return username_list
        except (ValueError, TypeError):
            # 如果转换失败，返回空列表
            return []
    else:
        # 用户名列表（兼容旧接口）：直接返回
        return approvers_list


def  get_approvers_from_record(business_record, approval=None):
    """
    从业务记录中获取审核人列表（统一方法）
    
    优先从 approvers_order 字段读取（JSON格式），
    如果没有则从 Approval.content 字段解析（兼容旧数据）
    
    Args:
        business_record: 业务记录对象（如 Schedule, Reimbursement, Income 等）
        approval: Approval对象（可选，用于从content字段解析审核人列表）
    
    Returns:
        list: 审核人列表，如 ["张三", "李四", "王五"]，如果没有则返回空列表
    """
    import json
    import logging
    logger = logging.getLogger(__name__)
    
    # 优先从 approvers_order 字段读取
    if hasattr(business_record, 'approvers_order') and business_record.approvers_order:
        try:
            approvers_list = json.loads(business_record.approvers_order)
            if isinstance(approvers_list, list):
                logger.info(f"get_approvers_from_record: 从 business_record.approvers_order 获取审核人列表: {approvers_list}")
                return approvers_list
        except (json.JSONDecodeError, TypeError) as e:
            logger.warning(f"get_approvers_from_record: 解析 approvers_order 失败: {e}")
    
    # 如果 business_record 没有 approvers_order 字段，尝试从 Approval.content 字段解析
    if approval and approval.content:
        try:
            # 格式：审批流程：张三 → 李四 → 王五 → 财务部（按顺序审批），当前审批人：张三
            if "审批流程：" in approval.content:
                # 提取审批流程部分
                flow_part = approval.content.split("审批流程：")[1]
                # 查找"（按顺序审批）"的位置
                if "（按顺序审批）" in flow_part:
                    flow_part = flow_part.split("（按顺序审批）")[0]
                # 分割审核人（使用 → 分隔）
                approvers_list = [a.strip() for a in flow_part.split("→") if a.strip()]
                # 移除最后的"财务"或"财务部"（兼容两种格式），以及"申请人（待查看）"（投标/立项最后一步）
                if approvers_list:
                    last = approvers_list[-1].strip()
                    if last in ("财务", "财务部") or last == "申请人（待查看）":
                        approvers_list = approvers_list[:-1]
                if approvers_list:
                    logger.info(f"get_approvers_from_record: 从 Approval.content 解析审核人列表: {approvers_list}")
                    return approvers_list
        except Exception as e:
            logger.warning(f"get_approvers_from_record: 从 Approval.content 解析失败: {e}", exc_info=True)
    
    logger.info(f"get_approvers_from_record: 未找到审核人列表")
    return []


def ensure_case_for_approved_project(project, approval=None):
    """
    立项审批进入「待查看」或「已通过」时，若该立项尚未在案件管理中有对应案件，则自动创建一条案件记录。
    立案时间 = 最后审批人审批通过的时间（进入待查看时写入 approval.completeTiem），不再是申请人查看时间。
    - 待查看：最后一个审核人通过后即建案，立案时间 = 当日（completeTiem 在进入待查看时已写入）。
    - 已通过：申请人查看后若尚未建案则补建，立案时间仍用 approval.completeTiem（最后审批人通过日）。

    Args:
        project: ProjectRegistration 实例
        approval: 可选，立项登记的 Approval 记录；不传则按 user_id 查询（仅查已通过）
    """
    from business.models import Case, ProjectRegistration
    from .models import Approval as ApprovalModel
    if not project:
        return
    # 允许建案：立项已通过，或审批已进入待查看（审核人全部通过）
    project_approved = getattr(project, 'state', None) == "已通过"
    approval_pending_view = approval and getattr(approval, 'state', None) == "待查看"
    if not project_approved and not approval_pending_view:
        return
    if Case.objects.filter(project_id=project.id, is_deleted=False).exists():
        return
    if approval is None:
        approval = ApprovalModel.objects.filter(
            type='立项登记', user_id=str(project.id), state='已通过', is_deleted=False
        ).order_by('-id').first()
    if approval and getattr(approval, 'completeTiem', None):
        filing_time = approval.completeTiem.strftime('%Y-%m-%d')
    else:
        filing_time = date.today().strftime('%Y-%m-%d')
    Case.objects.create(
        project_id=project.id,
        contract_no=getattr(project, 'ContractNo', None) or '',
        project_type=getattr(project, 'type', None) or '',
        client_name=getattr(project, 'client_info', None) or '',
        party_name=getattr(project, 'party_info', None) or '',
        project_description=getattr(project, 'description', None) or '',
        responsiblefor=getattr(project, 'responsiblefor', None) or '',
        charge=getattr(project, 'charge', None) or '',
        times=filing_time,
        AgencyContract='[]',
        Contractreturn='[]',
        Closingapplication='[]',
        ChangeRequest='',
        state='已通过',
        invoice_status='0',
        paymentcollection='0',
    )


def process_approval_flow(approval, business_record, current_approver, state, 
                          approval_type, final_state_map=None, rejection_reason=None):
    """
    统一的审核流程处理函数
    
    规则：
    - 如果 business_record 有 approvers_order 字段，从该字段读取审核人列表
    - 如果没有审核人列表（个人团队），直接抄送财务
    - 如果有审核人列表（多人团队），按顺序流转
    - 最后一个审核人通过后，抄送财务
    - 财务部只需要查看，不需要审批，查看后直接完成（审批记录和业务记录都更新为"已通过"）
    
    Args:
        approval: Approval对象
        business_record: 业务记录对象（如 Schedule, Reimbursement, Income 等）
        current_approver: 当前审核人（从 approval.personincharge 获取）
        state: 审核状态（"已通过" 或 "未通过"）
        approval_type: 审批类型（如"待办"、"报销申请"等）
        final_state_map: 状态映射字典，格式：{"已通过": "已完成", "未通过": "未通过"}
        rejection_reason: 不通过原因（审核不通过时填写）
    
    Returns:
        tuple: (是否完成, 错误信息)
    """
    import json
    from .models import Approval
    
    if final_state_map is None:
        final_state_map = {"已通过": "已完成", "未通过": "未通过"}

    def _sync_case_state_if_change_request(approval_type, business_record):
        """案件变更申请状态变更时，同步关联案件的状态"""
        if approval_type == "案件变更" and business_record and getattr(business_record, 'case', None) and business_record.case_id:
            business_record.case.state = business_record.state
            business_record.case.save(update_fields=['state'])

    # 如果审核不通过，直接结束
    if state == "未通过":
        approval.state = "未通过"
        # 保存不通过原因
        if rejection_reason:
            approval.rejection_reason = rejection_reason
        approval.save(update_fields=['state', 'rejection_reason'])
        
        if business_record and hasattr(business_record, 'state'):
            business_record.state = final_state_map.get("未通过", "未通过")
            business_record.save(update_fields=['state'])
            _sync_case_state_if_change_request(approval_type, business_record)
        
        return True, None
    
    # 申请人待查看阶段：当前步骤是申请人待查看，申请人查看后完成（投标/立项/案件变更等）
    applicant = getattr(approval, 'applicant', None)
    if approval.state == "待查看" and applicant and approval.personincharge == applicant:
        # 已通过、已查看、未传 state 或前端传 undefined/null 等均视为申请人已查看完成
        state_str = (state or "").strip().lower() if isinstance(state, str) else ""
        if state == "已通过" or state == "已查看" or state is None or state == "" or state_str in ("undefined", "null"):
            approval.state = "已通过"
            # 立项登记在进入待查看时已写入 completeTiem（最后审批人通过时间），此处不改写；其他类型或未写时补写
            if not approval.completeTiem:
                approval.completeTiem = date.today()
            if "已通过" not in approval.content:
                approval.content = (approval.content or "") + "，申请人已查看"
            approval.save(update_fields=['state', 'content', 'completeTiem'])
            if business_record and hasattr(business_record, 'state'):
                business_record.state = final_state_map.get("已通过", "已通过")
                business_record.save(update_fields=['state'])
                _sync_case_state_if_change_request(approval_type, business_record)
            # 立项：若待查看时已建案此处不会重复创建；若未建案则补建。立案时间不再按申请人查看日更新
            if approval_type == "立项登记" and business_record:
                ensure_case_for_approved_project(business_record, approval=approval)
            return True, None
        if state == "未通过":
            approval.state = "未通过"
            if rejection_reason:
                approval.rejection_reason = rejection_reason
            approval.save(update_fields=['state', 'rejection_reason'])
            if business_record and hasattr(business_record, 'state'):
                business_record.state = final_state_map.get("未通过", "未通过")
                business_record.save(update_fields=['state'])
                _sync_case_state_if_change_request(approval_type, business_record)
            return True, None
        return False, None
    
    # 检查当前是否已经是财务审核（部门ID或“财务”字符串均视为财务阶段）
    if is_finance_personincharge(approval.personincharge) and approval.state == "已抄送财务":
        # 财务部只需要查看，不需要审批，查看后直接完成
        # 如果不传state或state为"已通过"，则完成审批
        if not state or state == "已通过":
            approval.state = "已通过"
            if not approval.completeTiem:
                approval.completeTiem = date.today()
            approval.save(update_fields=['state', 'completeTiem'])
            
            if business_record and hasattr(business_record, 'state'):
                business_record.state = final_state_map.get("已通过", "已通过")
                business_record.save(update_fields=['state'])
                _sync_case_state_if_change_request(approval_type, business_record)
        elif state == "未通过":
            approval.state = "未通过"
            # 保存不通过原因
            if rejection_reason:
                approval.rejection_reason = rejection_reason
            approval.save(update_fields=['state', 'rejection_reason'])
            
            if business_record and hasattr(business_record, 'state'):
                business_record.state = final_state_map.get("未通过", "未通过")
                business_record.save(update_fields=['state'])
                _sync_case_state_if_change_request(approval_type, business_record)
        
        return True, None
    
    # 获取审核人列表
    approvers_list = get_approvers_from_record(business_record, approval=approval)
    import logging
    logger = logging.getLogger(__name__)
    logger.info(f"process_approval_flow: 审批类型={approval_type}, 当前审核人={current_approver}, 审核状态={state}, 审核人列表={approvers_list}")
    
    if not approvers_list:
        # 没有审核人列表（个人团队或直接到财务）
        # 如果当前不是财务，则抄送财务
        if not is_finance_personincharge(approval.personincharge):
            finance_personincharge = get_finance_personincharge_value()
            approval.personincharge = finance_personincharge
            approval.state = "已抄送财务"
            if "已抄送财务" not in approval.content and "已抄送财务部" not in approval.content:
                approval.content = approval.content + "，已抄送财务部"
            approval.save(update_fields=['state', 'personincharge', 'content'])
            
        if business_record and hasattr(business_record, 'state'):
            # 抄送财务时就已经审核通过，财务只是查看
            # 使用 final_state_map 确保状态映射正确（如待办类型：已通过 -> 已完成）
            business_record.state = final_state_map.get("已通过", "已通过")
            business_record.save(update_fields=['state'])
            _sync_case_state_if_change_request(approval_type, business_record)
        return False, None
    
    # 有审核人列表（多人团队），按顺序流转
    try:
        current_index = approvers_list.index(current_approver)
        logger.info(f"process_approval_flow: 当前审核人在列表中的位置: {current_index}/{len(approvers_list)-1}")
    except ValueError:
        # 当前审核人不在列表中，可能是旧数据，直接抄送财务
        logger.warning(f"process_approval_flow: 当前审核人 {current_approver} 不在审核人列表中 {approvers_list}，直接抄送财务")
        finance_personincharge = get_finance_personincharge_value()
        approval.personincharge = finance_personincharge
        approval.state = "已抄送财务"
        approval.save(update_fields=['state', 'personincharge'])
        return False, None
    
    # 检查是否还有下一个审核人
    if current_index < len(approvers_list) - 1:
        # 不是最后一个审核人，流转到下一个
        next_approver = approvers_list[current_index + 1]
        logger.info(f"process_approval_flow: 流转到下一个审核人: {next_approver} (位置: {current_index + 1})")
        approval.personincharge = next_approver
        approval.state = "审核中"
        # 更新审批内容，显示当前审批人
        if "当前审批人：" in approval.content:
            approval.content = approval.content.replace(
                f"当前审批人：{current_approver}",
                f"当前审批人：{next_approver}"
            )
        approval.save(update_fields=['state', 'personincharge', 'content'])
        logger.info(f"process_approval_flow: 已更新审批记录，personincharge={next_approver}, state=审核中")
        return False, None
    else:
        # 最后一个审核人已通过：投标/立项/案件变更/结案申请转申请人待查看，其他类型抄送财务
        applicant = getattr(approval, 'applicant', None)
        if approval_type in ("投标登记", "立项登记", "案件变更", "结案申请") and applicant:
            logger.info(f"process_approval_flow: 最后一个审核人已审核，流转到申请人待查看: {applicant}")
            approval.personincharge = applicant
            approval.state = "待查看"
            # 立项登记：立案时间 = 最后审批人通过时间，在此刻写入 completeTiem
            if approval_type == "立项登记":
                approval.completeTiem = date.today()
            if "待申请人查看" not in (approval.content or ""):
                approval.content = (approval.content or "") + "，待申请人查看"
            approval.save(update_fields=['state', 'personincharge', 'content', 'completeTiem'] if approval_type == "立项登记" else ['state', 'personincharge', 'content'])
            # 立项登记：最后审批人通过后，立项即为「已通过」，待查看只是通知不阻塞
            if approval_type == "立项登记" and business_record:
                if hasattr(business_record, 'state'):
                    business_record.state = "已通过"
                    business_record.save(update_fields=['state'])
                # 立项审批通过后直接创建案件，不等待申请人查看
                ensure_case_for_approved_project(business_record, approval=approval)
            # 投标/案件变更等：不更新业务记录状态，等申请人查看后再设为已通过
            return False, None
        # 其他类型：抄送财务
        logger.info(f"process_approval_flow: 最后一个审核人已审核，流转到财务部")
        finance_personincharge = get_finance_personincharge_value()
        approval.personincharge = finance_personincharge
        approval.state = "已抄送财务"
        if "已抄送财务" not in (approval.content or "") and "已抄送财务部" not in (approval.content or ""):
            approval.content = (approval.content or "") + "，已抄送财务部"
        approval.save(update_fields=['state', 'personincharge', 'content'])
        
        if business_record and hasattr(business_record, 'state'):
            final_state = final_state_map.get("已通过", "已通过")
            business_record.state = final_state
            business_record.save(update_fields=['state'])
            _sync_case_state_if_change_request(approval_type, business_record)
        
        logger.info(f"process_approval_flow: 已抄送财务部，personincharge=%s, state=已抄送财务，业务记录状态=%s", approval.personincharge, final_state_map.get("已通过", "已通过"))
        return False, None


def create_approval_with_team_logic(team_name, approvers, title, content, approval_type, user_id, 
                                     business_record=None, today=None, applicant=None, force_approval=False):
    """
    根据团队类型创建审批记录（统一逻辑）
    
    规则：
    - 个人团队（personal）：直接抄送财务（personincharge=财务部ID，state="已抄送财务"）
    - 投标登记/立项登记：最后一步给申请人，生成「待查看」待办，申请人查看后完成（不再给财务部）
    - 其他类型：团队（team）需要审核人，按顺序审核，最后抄送财务
    - 无团队：直接抄送财务
    - 强制审批模式（force_approval=True）：即使是个人团队也需要审批，用于付款申请、报销、工资/奖金变更等
    
    注意：personincharge字段统一使用财务部ID（优先）或回退到"财务"字符串
    
    Args:
        team_name: 团队名称
        approvers: 审核人列表（可以是数组或字符串，多人团队时需要）
        title: 审批标题
        content: 审批内容
        approval_type: 审批类型（如"立项登记"、"投标登记"、"付款申请"等）
        user_id: 关联的业务ID（字符串）
        business_record: 业务记录对象（可选）
        today: 日期字符串（可选，格式：YYYY-MM-DD）
        applicant: 申请人用户名（可选，投标/立项时填，最后一步生成待查看待办给申请人）
        force_approval: 是否强制审批（默认False）。设为True时，即使是个人团队也需要审批（如付款申请、报销、工资/奖金变更）
    
    Returns:
        tuple: (approval对象, approvers_order_json, 是否需要审核)
    """
    import json
    from datetime import datetime
    from .models import Team, Approval, User
    
    if today is None:
        today = datetime.now().strftime("%Y-%m-%d")
    
    # 查找团队
    team = None
    if team_name:
        try:
            team = Team.objects.prefetch_related('approvers').filter(name=team_name, is_deleted=False).first()
        except:
            team = None
    
    # 优先检查是否传入了审核人（无论团队类型如何，如果传入了审核人，都应该使用）
    approvers_list = parse_approvers(approvers)
    
    # 如果传入了审核人，使用传入的审核人（即使团队类型是personal或无团队）
    if approvers_list:
        # 验证审核人是否存在，过滤掉无效的审核人
        valid_approvers_list = []
        invalid_approvers_list = []
        for approver_name in approvers_list:
            if User.objects.filter(username=approver_name, is_deleted=False).exists():
                valid_approvers_list.append(approver_name)
            else:
                invalid_approvers_list.append(approver_name)
        
        # 如果所有审核人都无效，返回 None
        if not valid_approvers_list:
            return None, None, True  # 审核人不存在
        
        # 使用有效的审核人列表
        approvers_list = valid_approvers_list
        
        # 将审核人顺序存储为JSON格式
        approvers_order_json = json.dumps(approvers_list, ensure_ascii=False)
        
        # 存储到业务记录
        if business_record and hasattr(business_record, 'approvers_order'):
            business_record.approvers_order = approvers_order_json
            business_record.state = "审核中"
            business_record.save(update_fields=['approvers_order', 'state'])
        
        # 创建审批记录，第一个审核人
        first_approver = approvers_list[0]
        approvers_str = ' → '.join(approvers_list)  # 使用箭头表示顺序
        # 投标登记/立项登记/案件变更/结案申请：最后一步给申请人（待查看），不再给财务部
        if approval_type in ("投标登记", "立项登记", "案件变更", "结案申请") and applicant:
            flow_suffix = " → 申请人（待查看）"
        else:
            flow_suffix = " → 财务部（按顺序审批）"
        content_with_flow = f"{content}，审批流程：{approvers_str}{flow_suffix}，当前审批人：{first_approver}"
        
        import logging
        logger = logging.getLogger(__name__)
        logger.info(f"create_approval_with_team_logic: 创建审批记录（使用传入的审核人）- 审批类型={approval_type}, 审核人列表={approvers_list}, 第一个审核人={first_approver}, approvers_order_json={approvers_order_json}")
        
        approval = Approval.objects.create(
            title=title,
            content=content_with_flow,
            times=today,
            personincharge=first_approver,
            state="审核中",
            type=approval_type,
            user_id=str(user_id),
            applicant=applicant
        )
        
        logger.info(f"create_approval_with_team_logic: 审批记录已创建 - ID={approval.id}, personincharge={approval.personincharge}, state={approval.state}")
        
        return approval, approvers_order_json, True
    
    # 如果没有传入审核人，则根据团队类型判断
    # 判断团队类型
    if not team_name or not team or (team and team.team_type == 'personal'):
        # 强制审批模式（付款申请、报销、工资/奖金变更等）：即使是个人团队也需要审批
        if force_approval:
            import logging
            logger = logging.getLogger(__name__)
            logger.info(f"create_approval_with_team_logic: 强制审批模式 - 审批类型={approval_type}, 团队={team_name}")
            
            # 尝试获取默认审核人：优先律所负责人，然后管委会成员
            default_approver = get_law_firm_leader(team_name)
            if not default_approver:
                # 如果找不到默认审核人，返回错误
                logger.warning(f"create_approval_with_team_logic: 强制审批模式下找不到默认审核人")
                return None, None, True  # needs_approval = True，表示需要审批但缺少审核人
            
            # 使用默认审核人创建审批
            approvers_list = [default_approver]
            approvers_order_json = json.dumps(approvers_list, ensure_ascii=False)
            
            # 存储到业务记录
            if business_record and hasattr(business_record, 'approvers_order'):
                business_record.approvers_order = approvers_order_json
                business_record.state = "审核中"
                business_record.save(update_fields=['approvers_order', 'state'])
            
            # 创建审批流程内容
            content_with_flow = f"{content}，审批流程：{default_approver} → 财务部（按顺序审批），当前审批人：{default_approver}"
            
            logger.info(f"create_approval_with_team_logic: 强制审批 - 使用默认审核人 {default_approver}")
            
            approval = Approval.objects.create(
                title=title,
                content=content_with_flow,
                times=today,
                personincharge=default_approver,
                state="审核中",
                type=approval_type,
                user_id=str(user_id),
                applicant=applicant
            )
            
            return approval, approvers_order_json, True
        
        # 投标登记/立项登记/案件变更/结案申请且传入了申请人：最后一步给申请人，生成待查看待办（不再给财务部）
        if approval_type in ("投标登记", "立项登记", "案件变更", "结案申请") and applicant:
            content_to_save = content + "，待申请人查看"
            approval = Approval.objects.create(
                title=title,
                content=content_to_save,
                times=today,
                personincharge=applicant,
                state="待查看",
                type=approval_type,
                user_id=str(user_id),
                applicant=applicant
            )
            # 立项登记：个人团队无审核人，直接进入待查看，立项即为「已通过」，待查看只是通知
            if approval_type == "立项登记" and business_record:
                if hasattr(business_record, 'state'):
                    business_record.state = "已通过"
                    business_record.save(update_fields=['state'])
                # 立项审批通过后直接创建案件，不等待申请人查看
                ensure_case_for_approved_project(business_record, approval=approval)
            # 投标/案件变更等：不更新业务记录状态，等申请人查看后再设为已通过
            return approval, None, False
        # 其他类型：个人团队或无团队，直接到财务团队审核
        finance_personincharge = get_finance_personincharge_value()
        content_to_save = content
        if "已抄送财务" not in content and "已抄送财务部" not in content:
            content_to_save = content + "，已抄送财务部"

        approval = Approval.objects.create(
            title=title,
            content=content_to_save,
            times=today,
            personincharge=finance_personincharge,
            state="已抄送财务",
            type=approval_type,
            user_id=str(user_id),
            applicant=applicant
        )
        
        # 更新业务记录状态：抄送财务时就已经审核通过，财务只是查看
        if business_record:
            if approval_type in ["待办", "结案申请"]:
                business_record.state = "已完成"
            else:
                business_record.state = "已通过"
            business_record.save(update_fields=['state'])
        
        return approval, None, False
    
    elif team and team.team_type == 'team':
        # 团队类型：需要审核人审核（按顺序）
        # 如果没有传入审核人，使用团队的审核人
        team_approvers = team.approvers.filter(is_deleted=False).order_by('id')
        approvers_list = [approver.username for approver in team_approvers]
        
        if not approvers_list:
            return None, None, True  # 需要审核但没有审核人
        
        # 验证审核人是否存在，过滤掉无效的审核人
        valid_approvers_list = []
        invalid_approvers_list = []
        for approver_name in approvers_list:
            if User.objects.filter(username=approver_name, is_deleted=False).exists():
                valid_approvers_list.append(approver_name)
            else:
                invalid_approvers_list.append(approver_name)
        
        # 如果所有审核人都无效，返回 None
        if not valid_approvers_list:
            return None, None, True  # 审核人不存在
        
        # 使用有效的审核人列表
        approvers_list = valid_approvers_list
        
        # 将审核人顺序存储为JSON格式
        approvers_order_json = json.dumps(approvers_list, ensure_ascii=False)
        
        # 存储到业务记录
        if business_record and hasattr(business_record, 'approvers_order'):
            business_record.approvers_order = approvers_order_json
            business_record.state = "审核中"
            business_record.save(update_fields=['approvers_order', 'state'])
        
        # 创建审批记录，第一个审核人
        first_approver = approvers_list[0]
        approvers_str = ' → '.join(approvers_list)
        if approval_type in ("投标登记", "立项登记", "案件变更", "结案申请") and applicant:
            flow_suffix = " → 申请人（待查看）"
        else:
            flow_suffix = " → 财务部（按顺序审批）"
        content_with_flow = f"{content}，审批流程：{approvers_str}{flow_suffix}，当前审批人：{first_approver}"
        
        import logging
        logger = logging.getLogger(__name__)
        logger.info(f"create_approval_with_team_logic: 创建审批记录（使用团队配置的审核人）- 审批类型={approval_type}, 审核人列表={approvers_list}, 第一个审核人={first_approver}, approvers_order_json={approvers_order_json}")
        
        approval = Approval.objects.create(
            title=title,
            content=content_with_flow,
            times=today,
            personincharge=first_approver,
            state="审核中",
            type=approval_type,
            user_id=str(user_id),
            applicant=applicant
        )
        
        logger.info(f"create_approval_with_team_logic: 审批记录已创建 - ID={approval.id}, personincharge={approval.personincharge}, state={approval.state}")
        
        return approval, approvers_order_json, True
    
    else:
        # 找不到团队或团队类型未知，直接抄送财务
        finance_personincharge = get_finance_personincharge_value()
        content_to_save = content
        if "已抄送财务" not in content and "已抄送财务部" not in content:
            content_to_save = content + "，已抄送财务部"

        approval = Approval.objects.create(
            title=title,
            content=content_to_save,
            times=today,
            personincharge=finance_personincharge,
            state="已抄送财务",
            type=approval_type,
            user_id=str(user_id),
            applicant=applicant
        )
        
        # 更新业务记录状态：抄送财务时就已经审核通过，财务只是查看
        if business_record:
            if approval_type in ["待办", "结案申请"]:
                business_record.state = "已完成"
            else:
                business_record.state = "已通过"
            business_record.save(update_fields=['state'])
        
        return approval, None, False