import { afterEach, describe, expect, it } from "vitest";
import {
  areMocksEnabled,
  getMockInvoices,
  getMockVendors,
  resetMockInvoices,
  updateMockInvoicePayDate,
} from "@/mocks";

describe("mocks module", () => {
  afterEach(() => {
    resetMockInvoices();
  });

  it("defaults to mocks enabled", () => {
    expect(areMocksEnabled()).toBe(true);
  });

  it("exposes sample invoices and vendors", () => {
    expect(getMockVendors().length).toBeGreaterThan(0);
    expect(getMockInvoices().length).toBeGreaterThanOrEqual(6);
  });

  it("seeds at least two invoices per dashboard tab", () => {
    const invoices = getMockInvoices();
    const pending = invoices.filter((invoice) => invoice.status === "pending_approval");
    const ready = invoices.filter((invoice) => invoice.status === "approved");

    expect(pending.length).toBeGreaterThanOrEqual(2);
    expect(ready.length).toBeGreaterThanOrEqual(2);
    expect(invoices.every((invoice) => invoice.invoiceNumbers && invoice.amount >= 0)).toBe(true);
  });

  it("updates pay date in the mutable mock store", () => {
    const before = getMockInvoices().find((invoice) => invoice.id === "inv-1");
    expect(before).toBeDefined();

    const updated = updateMockInvoicePayDate("inv-1", "2026-08-18");
    expect(updated.payDate).toBe("2026-08-18");

    const after = getMockInvoices().find((invoice) => invoice.id === "inv-1");
    expect(after?.payDate).toBe("2026-08-18");
  });

  it("throws when updating an unknown invoice", () => {
    expect(() => updateMockInvoicePayDate("missing", "2026-08-18")).toThrow(
      /Mock invoice not found/,
    );
  });
});