人工审批门控标签系统 — 高影响Action的分级审批、工作流设计与审计追踪

"""
人工审批门控标签系统
功能：审批级别计算 / 审批工作流管理 / SLA监控 / 超时升级 / 审计日志
输入：待执行Action + 风险评估Tags
输出：审批工单 + 工作流状态 + 审计追踪
"""
from dataclasses import dataclass, field
from datetime import datetime, timedelta
from typing import Optional
from enum import Enum
import warnings
warnings.filterwarnings('ignore')


class ApprovalLevel(Enum):
    AUTO = ("AUTO", 0, None)
    L1_SUPERVISOR = ("L1", 2, "supervisor")
    L2_MANAGER = ("L2", 8, "manager")
    L3_VP = ("L3", 24, "vp")
    L4_LEGAL = ("L4", 48, "legal")

    def __init__(self, code, sla_hours, role):
        self.code = code
        self.sla_hours = sla_hours
        self.role = role


@dataclass
class ApprovalRequest:
    request_id: str
    action_id: str
    action_type: str
    entity_id: str
    estimated_impact_yuan: float
    risk_tags: dict
    level: ApprovalLevel
    created_at: datetime = field(default_factory=datetime.now)
    deadline: Optional[datetime] = None
    approver: Optional[str] = None
    status: str = "PENDING"
    decision: Optional[str] = None
    decision_reason: Optional[str] = None
    decision_at: Optional[datetime] = None

    def __post_init__(self):
        if self.level != ApprovalLevel.AUTO and self.deadline is None:
            self.deadline = self.created_at + timedelta(hours=self.level.sla_hours)

    def is_overdue(self) -> bool:
        return (self.deadline is not None and
                datetime.now() > self.deadline and
                self.status == "PENDING")


class ApprovalGateEngine:

    IMPACT_THRESHOLDS = {
        ApprovalLevel.AUTO: 5_000,
        ApprovalLevel.L1_SUPERVISOR: 20_000,
        ApprovalLevel.L2_MANAGER: 100_000,