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

const exists = vi.fn();
vi.mock("@/lib/redis/client", () => ({
  getRedisClient: async () => ({ exists }),
  discordWorkerHeartbeatKey: () => "buzz:events:discord-worker:heartbeat",
}));

const { checkSlip2Go, checkDiscordBot, checkLunaris } = await import("./services");
const originalFetch = globalThis.fetch;
const originalUrl = process.env.SLIP2GO_VERIFY_URL;
const originalSecret = process.env.SLIP2GO_API_SECRET;
const fetchMock = vi.fn();

describe("external service checks", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    globalThis.fetch = fetchMock as unknown as typeof fetch;
    process.env.SLIP2GO_VERIFY_URL = "https://slip2go.example.test/verify";
    process.env.SLIP2GO_API_SECRET = "secret";
  });

  afterEach(() => {
    globalThis.fetch = originalFetch;
    if (originalUrl === undefined) delete process.env.SLIP2GO_VERIFY_URL;
    else process.env.SLIP2GO_VERIFY_URL = originalUrl;
    if (originalSecret === undefined) delete process.env.SLIP2GO_API_SECRET;
    else process.env.SLIP2GO_API_SECRET = originalSecret;
  });

  it("checks Slip2Go reachability without submitting a slip", async () => {
    fetchMock.mockResolvedValue(new Response(null, { status: 405 }));
    await expect(checkSlip2Go(AbortSignal.timeout(1000))).resolves.toBeUndefined();
    expect(fetchMock).toHaveBeenCalledWith(
      new URL("https://slip2go.example.test/verify"),
      expect.objectContaining({ method: "HEAD", cache: "no-store" }),
    );
    fetchMock.mockResolvedValue(new Response(null, { status: 503 }));
    await expect(checkSlip2Go(AbortSignal.timeout(1000))).rejects.toThrow("503");
  });

  it("requires a valid Lunaris version response", async () => {
    fetchMock.mockResolvedValueOnce(Response.json({ version: "7.0.54" }));
    await expect(checkLunaris(AbortSignal.timeout(1000))).resolves.toBeUndefined();
    fetchMock.mockResolvedValueOnce(Response.json({ version: "invalid" }));
    await expect(checkLunaris(AbortSignal.timeout(1000))).rejects.toThrow();
  });

  it("requires a live Discord worker heartbeat", async () => {
    exists.mockResolvedValueOnce(1).mockResolvedValueOnce(0);
    await expect(checkDiscordBot()).resolves.toBeUndefined();
    await expect(checkDiscordBot()).rejects.toThrow("heartbeat");
  });
});