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

const execute = vi.fn();
const ping = vi.fn();
const checkSlip2Go = vi.fn();
const checkDiscordBot = vi.fn();
const checkLunaris = vi.fn();

vi.mock("next/server", () => ({ connection: vi.fn() }));
vi.mock("@/db/client", () => ({ getDb: () => ({ execute }) }));
vi.mock("@/lib/redis/client", () => ({ getRedisClient: async () => ({ ping }) }));
vi.mock("@/lib/health/services", () => ({ checkSlip2Go, checkDiscordBot, checkLunaris }));

const { GET } = await import("./route");

describe("healthz endpoint", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    execute.mockResolvedValue(undefined);
    ping.mockResolvedValue("PONG");
    checkSlip2Go.mockResolvedValue(undefined);
    checkDiscordBot.mockResolvedValue(undefined);
    checkLunaris.mockResolvedValue(undefined);
  });

  it("checks all five dependencies", async () => {
    const response = await GET();
    expect(response.status).toBe(200);
    expect(response.headers.get("Cache-Control")).toBe("no-store");
    expect(await response.json()).toMatchObject({
      status: "ready",
      checks: { database: "ok", redis: "ok", slip2go: "ok", discordBot: "ok", lunaris: "ok" },
    });
  });

  it("returns 503 and identifies a failed dependency", async () => {
    checkDiscordBot.mockRejectedValueOnce(new Error("offline"));
    const response = await GET();
    expect(response.status).toBe(503);
    expect(await response.json()).toMatchObject({
      status: "not-ready",
      checks: { database: "ok", redis: "ok", slip2go: "ok", discordBot: "failed", lunaris: "ok" },
    });
  });

});