"""现场链接生成条件：装货/送货段含山峡或云栋客户"""
from types import SimpleNamespace

from app.services.pl_internal_customer import (
    INTERNAL_CUSTOMER_NAMES,
    plan_requires_site_link,
)


class _FakeQuery:
    def __init__(self, rows):
        self._rows = rows

    def filter(self, *args, **kwargs):
        return self

    def first(self):
        if isinstance(self._rows, list):
            return self._rows[0] if self._rows else None
        return self._rows

    def all(self):
        if isinstance(self._rows, list):
            return self._rows
        return [self._rows] if self._rows else []


class _FakeSession:
    def __init__(self, load=None, deliveries=None):
        self.load = load
        self.deliveries = deliveries or []

    def query(self, model):
        name = getattr(model, "__name__", str(model))
        if name == "PlPlanLoad":
            return _FakeQuery(self.load)
        if name == "PlPlanDelivery":
            return _FakeQuery(self.deliveries)
        return _FakeQuery(None)


def _plan(**kwargs):
    defaults = {
        "id": "plan-1",
        "supplier_name": None,
        "customer_name": None,
        "destination_name": None,
    }
    defaults.update(kwargs)
    return SimpleNamespace(**defaults)


def test_internal_delivery_requires_site_link():
    plan = _plan()
    db = _FakeSession(
        load=SimpleNamespace(customer_name="巢湖市大自然化工有限公司"),
        deliveries=[SimpleNamespace(customer_name="安庆市山峡化工有限公司")],
    )
    assert plan_requires_site_link(db, tenant_no="shanxia2.0", plan=plan) is True


def test_external_stops_do_not_require_site_link():
    plan = _plan()
    db = _FakeSession(
        load=SimpleNamespace(customer_name="巢湖市大自然化工有限公司"),
        deliveries=[SimpleNamespace(customer_name="外部客户有限公司")],
    )
    assert plan_requires_site_link(db, tenant_no="shanxia2.0", plan=plan) is False


def test_legacy_plan_customer_fallback():
    plan = _plan(customer_name="安徽云栋化工有限公司")
    db = _FakeSession(load=None, deliveries=[])
    assert plan_requires_site_link(db, tenant_no="shanxia2.0", plan=plan) is True


def test_internal_customer_names_constant():
    assert "安庆市山峡化工有限公司" in INTERNAL_CUSTOMER_NAMES
    assert "安徽云栋化工有限公司" in INTERNAL_CUSTOMER_NAMES