"""运输计划列头 facet：从上下文参数中剥离当前列自身条件（Excel 语义）。"""
from __future__ import annotations

from typing import Dict, MutableMapping, Set

_FIELD_ALIASES = {
    "loadCustomers": "loadCustomer",
    "deliveryCustomers": "deliveryCustomer",
    "contractNo": "productContract",
    "productPackageSpec": "packageSpec",
}

_FIELD_KEYS: Dict[str, Set[str]] = {
    "planNo": {"planNo", "planNoIn", "plan_no", "plan_no_in"},
    "licensePlate": {
        "licensePlate",
        "licensePlateIn",
        "license_plate",
        "license_plate_in",
    },
    "carrierName": {
        "carrierName",
        "carrierNameIn",
        "carrier_name",
        "carrier_name_in",
    },
    "loadCustomer": {
        "loadCustomer",
        "loadCustomerIn",
        "loadCustomers",
        "loadCustomersIn",
        "load_customers",
        "load_customers_in",
        "stopCustomers",
        "stop_customers",
        "customerKeyword",
        "customer_keyword",
    },
    "deliveryCustomer": {
        "deliveryCustomer",
        "deliveryCustomerIn",
        "deliveryCustomers",
        "deliveryCustomersIn",
        "delivery_customers",
        "delivery_customers_in",
        "stopCustomers",
        "stop_customers",
        "customerKeyword",
        "customer_keyword",
    },
    "productContract": {
        "productContract",
        "productContractIn",
        "contractNo",
        "contractNoIn",
        "contract_no",
        "contract_no_in",
        "stopKind",
        "stopKindIn",
        "stop_kind",
        "stop_kind_in",
    },
    "productName": {
        "productName",
        "productNameIn",
        "product_name",
        "product_name_in",
    },
    "productSpec": {
        "productSpec",
        "productSpecIn",
        "product_spec",
        "product_spec_in",
    },
    "packageSpec": {
        "packageSpec",
        "packageSpecIn",
        "package_spec",
        "package_spec_in",
        "productPackageSpec",
        "productPackageSpecIn",
    },
    "productUnit": {
        "productUnit",
        "productUnitIn",
        "product_unit",
        "product_unit_in",
    },
    "gapType": {"gapType", "gapTypeIn", "gap_type"},
}


def _keys_for_field(field: str) -> Set[str]:
    f = _FIELD_ALIASES.get((field or "").strip(), (field or "").strip())
    keys = _FIELD_KEYS.get(f)
    if keys:
        return set(keys)
    snake = "".join(["_" + c.lower() if c.isupper() else c for c in f]).lstrip("_")
    return {f, f"{f}In", snake, f"{snake}_in"}


def strip_plan_facet_self_params(
    params: MutableMapping[str, object], field: str
) -> Dict[str, object]:
    """返回去掉当前 facet 列对应过滤键后的新 dict（不修改入参）。"""
    out = {k: v for k, v in params.items() if v not in (None, "")}
    for key in _keys_for_field(field):
        out.pop(key, None)
    for meta in ("field", "keyword", "limit"):
        out.pop(meta, None)
    return out