import { env } from "cloudflare:workers";
import { beforeEach, describe, expect, it, vi } from "vitest";

import { getUser } from "./getUser";

describe("getUser service", () => {
  const mockStub = {
    getUserProfile: vi.fn(),
  };

  beforeEach(() => {
    vi.clearAllMocks();
    // @ts-expect-error - Partial mock
    env.ANILIST_DO = {
      idFromName: vi.fn().mockReturnValue("global-id"),
      get: vi.fn().mockReturnValue(mockStub),
    };
  });

  it("should fetch user profile from Durable Object", async () => {
    const mockUser = { id: 1, name: "User", statistics: { anime: {} } };
    mockStub.getUserProfile.mockResolvedValue(mockUser);

    const result = await getUser("token");

    expect(result).toEqual({
      ...mockUser,
      statistics: mockUser.statistics.anime,
    });
    expect(mockStub.getUserProfile).toHaveBeenCalledWith("token");
  });

  it("should return null if DO throws 401 error", async () => {
    mockStub.getUserProfile.mockRejectedValue(new Error("401 Unauthorized"));

    const result = await getUser("token");

    expect(result).toBeNull();
  });

  it("should rethrow other DO errors", async () => {
    mockStub.getUserProfile.mockRejectedValue(new Error("Other Error"));

    await expect(getUser("token")).rejects.toThrow("Other Error");
  });

  it("should return null if DO returns null", async () => {
    mockStub.getUserProfile.mockResolvedValue(null);

    const result = await getUser("token");

    expect(result).toBeNull();
  });
});