"""未结算计划：装货/送货客户名称去重与回退。"""
from __future__ import annotations

from app.services.pl.freight_party_customers import (
    resolve_plan_party_customers,
    unique_customer_names,
)


def test_unique_customer_names_strips_dedupes_preserves_order():
    assert unique_customer_names([" 甲 ", "乙", "甲", "", None, "丙"]) == ["甲", "乙", "丙"]


def test_resolve_uses_stop_names_over_legacy():
    load, delivery = resolve_plan_party_customers(
        load_names=["装货A"],
        delivery_names=["送货1", "送货2"],
        fallback_supplier="旧供应商",
        fallback_customer="旧客户",
        fallback_destination="旧目的地",
    )
    assert load == ["装货A"]
    assert delivery == ["送货1", "送货2"]


def test_resolve_falls_back_when_stops_empty():
    load, delivery = resolve_plan_party_customers(
        load_names=[],
        delivery_names=["", "  "],
        fallback_supplier="供应商X",
        fallback_customer="客户Y",
        fallback_destination="目的地Z",
    )
    assert load == ["供应商X"]
    assert delivery == ["客户Y"]


def test_resolve_delivery_falls_back_to_destination():
    load, delivery = resolve_plan_party_customers(
        load_names=[],
        delivery_names=[],
        fallback_supplier=None,
        fallback_customer=None,
        fallback_destination="目的地Z",
    )
    assert load == []
    assert delivery == ["目的地Z"]