智能订单路由引擎 — 多约束订单履约路径优化与实时分配决策

"""
智能订单路由引擎
功能：多约束可行解过滤 / 评分矩阵 / 最优路由决策 / 负载均衡
输入：订单信息 + 仓库状态Tags + SKU标签
输出：路由决策 + 评分明细 + 负载均衡建议
"""
import numpy as np
import pandas as pd
from dataclasses import dataclass, field
from typing import Optional
import warnings
warnings.filterwarnings('ignore')


@dataclass
class OrderContext:
    order_id: str
    sku_id: str
    destination_zip: str
    destination_region: str
    quantity: int
    priority_tier: str      # PRIME / STANDARD / ECONOMY
    sla_deadline_hours: float
    customer_tier: str = "standard"


@dataclass
class WarehouseProfile:
    wh_id: str
    name: str
    region: str
    # Tags
    availability: int        # 可用库存件数
    capacity_utilization: float  # 使用率
    capacity_alert: str      # CRITICAL / WARNING / NORMAL
    transit_time_hours: dict  # region → 时效小时数
    cost_per_unit: dict      # region → 单件成本
    carrier_reliability: float
    compliance_zones: list   # 支持的合规区域
    hazmat_capable: bool = False


@dataclass
class RouteDecision:
    order_id: str
    selected_wh: str
    route_score: float
    time_score: float
    cost_score: float
    reliability_score: float
    estimated_transit_hours: float
    estimated_cost: float
    rejection_reasons: dict = field(default_factory=dict)
    confidence: str = "HIGH"


class OrderRoutingEngine:
    """智能订单路由引擎"""

    PRIORITY_SLA = {