import { describe, it, expect, vi, beforeEach } from "vitest";
import { createRequest, parseJsonResponse } from "@/__tests__/helpers/api-test-utils";

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

vi.mock("@/lib/amap", () => ({
  requireAmapApiKey: vi.fn().mockReturnValue("test-key"),
}));

const mockFetch = vi.fn();
vi.stubGlobal("fetch", mockFetch);

import { GET } from "./route";

const mockCtx = { params: Promise.resolve({}) };

beforeEach(() => {
  vi.clearAllMocks();
});

describe("GET /api/location/regeo", () => {
  it("returns reverse geocoded location", async () => {
    mockFetch.mockResolvedValue({
      json: () =>
        Promise.resolve({
          status: "1",
          regeocode: {
            formatted_address: "上海市黄浦区人民大道",
            addressComponent: {
              district: "黄浦区",
              township: "南京东路街道",
              neighborhood: { name: "人民广场" },
            },
          },
        }),
    });

    const req = createRequest("/api/location/regeo?lat=31.23&lng=121.47");
    const res = await GET(req, mockCtx);
    const { status, data } = await parseJsonResponse(res);

    expect(status).toBe(200);
    expect(data.name).toContain("黄浦区");
    expect(data.formatted).toBe("上海市黄浦区人民大道");
  });

  it("returns null name when API returns no result", async () => {
    mockFetch.mockResolvedValue({
      json: () => Promise.resolve({ status: "0" }),
    });

    const req = createRequest("/api/location/regeo?lat=31.23&lng=121.47");
    const res = await GET(req, mockCtx);
    const { data } = await parseJsonResponse(res);
    expect(data.name).toBeNull();
  });

  it("returns 400 when coordinates missing", async () => {
    const req = createRequest("/api/location/regeo");
    const res = await GET(req, mockCtx);
    expect(res.status).toBe(400);
  });

  it("returns 503 when API unavailable", async () => {
    mockFetch.mockRejectedValue(new Error("network"));

    const req = createRequest("/api/location/regeo?lat=31.23&lng=121.47");
    const res = await GET(req, mockCtx);
    expect(res.status).toBe(503);
  });
});