"""CUS-001 ~ CUS-010: 客户管理测试。

覆盖功能点:
- 新增客户成功与重复校验
- 客户列表筛选
- 客户详情
- 业务员客户范围隔离
"""
from __future__ import annotations

import pytest


@pytest.mark.customer
@pytest.mark.p0
class TestCustomerCreation:
    """CUS-001 ~ CUS-003: 客户创建测试。"""

    def test_create_customer_success(self, client, admin_headers):
        """CUS-001: 新增客户成功。"""
        resp = client.post("/api/customers", headers=admin_headers, json={
            "customer_name": "新客户测试",
            "mobile": "13800001001",
            "settlement_type": "immediate",
        })
        assert resp.status_code == 200
        data = resp.json()
        assert data["code"] == 0

    def test_duplicate_customer_name_mobile(self, client, admin_headers, make_customer):
        """CUS-002: 姓名+手机号重复应返回 40006。"""
        make_customer(customer_name="重复客户", mobile="13800009999")
        resp = client.post("/api/customers", headers=admin_headers, json={
            "customer_name": "重复客户",
            "mobile": "13800009999",
        })
        assert resp.status_code in (400, 409)
        data = resp.json()
        assert data["code"] == 40006

    def test_customer_mobile_required(self, client, admin_headers):
        """CUS-003: 手机号为空应返回验证错误。

        注意: FastAPI 默认返回 422 Unprocessable Entity (Pydantic 校验)，
        而非 400 Bad Request。
        """
        resp = client.post("/api/customers", headers=admin_headers, json={
            "customer_name": "无手机号客户",
        })
        # FastAPI Pydantic 校验返回 422，自定义校验返回 400
        assert resp.status_code in (400, 422)


@pytest.mark.customer
@pytest.mark.p0
class TestCustomerList:
    """CUS-004: 客户列表筛选测试。"""

    def test_list_customers(self, client, admin_headers, make_customer):
        """客户列表查询成功。"""
        make_customer()
        make_customer()
        resp = client.get("/api/customers", headers=admin_headers)
        assert resp.status_code == 200
        data = resp.json()
        assert "list" in data["data"]
        assert data["data"]["total"] >= 2

    def test_filter_customers_by_name(self, client, admin_headers, make_customer):
        """按姓名筛选客户。"""
        make_customer(customer_name="特殊客户A")
        make_customer(customer_name="普通客户B")
        resp = client.get("/api/customers?keyword=特殊", headers=admin_headers)
        assert resp.status_code == 200


@pytest.mark.customer
@pytest.mark.p0
class TestCustomerIsolation:
    """CUS-008: 业务员客户范围隔离测试。"""

    def test_salesman_only_see_own_customers(self, client, salesman_headers, salesman2_headers, make_customer):
        """业务员只能看到自己的客户。"""
        make_customer(customer_name="业务员A客户", salesman_id=2)
        make_customer(customer_name="业务员B客户", salesman_id=3)

        # 业务员A查看客户列表
        resp = client.get("/api/customers", headers=salesman_headers)
        data = resp.json()
        # 应该只能看到自己的客户
        for c in data["data"]["list"]:
            assert c["salesman_id"] in (2, None)

    def test_admin_see_all_customers(self, client, admin_headers, make_customer):
        """管理员可以看到所有客户。"""
        make_customer(customer_name="客户1", salesman_id=2)
        make_customer(customer_name="客户2", salesman_id=3)

        resp = client.get("/api/customers", headers=admin_headers)
        data = resp.json()
        assert data["data"]["total"] >= 2


@pytest.mark.customer
@pytest.mark.p1
class TestCustomerDetail:
    """CUS-005, CUS-009 ~ CUS-010: 客户详情测试。"""

    def test_customer_detail(self, client, admin_headers, make_customer):
        """CUS-005: 客户详情返回完整信息。"""
        customer = make_customer()
        resp = client.get(f"/api/customers/{customer.id}", headers=admin_headers)
        assert resp.status_code == 200
        data = resp.json()["data"]
        assert data["customer_name"] is not None

    def test_monthly_customer_flag(self, client, admin_headers, make_customer):
        """CUS-009: 月结客户标识。"""
        customer = make_customer(settlement_type="monthly", settlement_days=30)
        resp = client.get(f"/api/customers/{customer.id}", headers=admin_headers)
        assert resp.status_code == 200
        data = resp.json()["data"]
        assert data["settlement_type"] == "monthly"