import { beforeEach, describe, expect, it, vi } from "vitest";

const { findFirst } = vi.hoisted(() => ({
  findFirst: vi.fn(),
}));

vi.mock("@/lib/prisma", () => ({
  prisma: {
    businessCustomerUser: {
      findFirst,
      findMany: vi.fn(),
    },
  },
}));

import {
  resolveBusinessCustomerByAccount,
  resolveBusinessCustomerIdForQuote,
} from "@/modules/customer/business-customer-user-service";
import { ValidationError } from "@/modules/quote/types";

describe("business-customer-user-service", () => {
  beforeEach(() => {
    findFirst.mockReset();
  });

  it("按账号命中业务客户", async () => {
    findFirst.mockResolvedValue({
      customerId: "CUST_004",
      account: "demo_user",
      businessCustomer: {
        businessCustomerId: "bc-guid-1",
        externalCode: "76642888",
        name: "测试客户",
      },
    });
    const hit = await resolveBusinessCustomerByAccount("CUST_004", "demo_user");
    expect(hit?.business_customer_id).toBe("bc-guid-1");
    expect(hit?.external_code).toBe("76642888");
  });

  it("询价：已有 BC 不覆盖", async () => {
    const id = await resolveBusinessCustomerIdForQuote({
      customerId: "CUST_004",
      businessCustomerId: "bc-explicit",
      businessUserAccount: "any",
    });
    expect(id).toBe("bc-explicit");
    expect(findFirst).not.toHaveBeenCalled();
  });

  it("询价：无 BC + 账号未命中 → ValidationError", async () => {
    findFirst.mockResolvedValue(null);
    await expect(
      resolveBusinessCustomerIdForQuote({
        customerId: "CUST_004",
        businessUserAccount: "missing_user",
      }),
    ).rejects.toBeInstanceOf(ValidationError);
  });

  it("询价：无 BC + 账号命中 → 回填 BC", async () => {
    findFirst.mockResolvedValue({
      customerId: "CUST_004",
      account: "demo_user",
      businessCustomer: {
        businessCustomerId: "bc-guid-2",
        externalCode: "CM072",
        name: "OpenTrucking Inc",
      },
    });
    const id = await resolveBusinessCustomerIdForQuote({
      customerId: "CUST_004",
      businessUserAccount: "demo_user",
    });
    expect(id).toBe("bc-guid-2");
  });
});