import { describe, it, expect, vi, beforeEach } from "vitest";
import { backendStore } from "./backend.svelte.ts";

// Mock WebSocket globally so the store module can reference it
class MockWebSocket {
  onopen: ((ev: Event) => void) | null = null;
  onclose: ((ev: CloseEvent) => void) | null = null;
  onmessage: ((ev: MessageEvent) => void) | null = null;
  onerror: ((ev: Event) => void) | null = null;
  close = vi.fn();
}
vi.stubGlobal("WebSocket", MockWebSocket);

// Mock fetch to prevent real network calls
vi.stubGlobal(
  "fetch",
  vi.fn(() =>
    Promise.resolve({
      ok: true,
      json: () => Promise.resolve({}),
    })
  )
);

describe("backend store", () => {
  beforeEach(() => {
    backendStore.disconnect();
    backendStore.setPort(8081);
  });

  it("test_exports_expected_properties", () => {
    expect(backendStore).toHaveProperty("port");
    expect(backendStore).toHaveProperty("connectionState");
    expect(backendStore).toHaveProperty("connected");
    expect(backendStore).toHaveProperty("appState");
    expect(backendStore).toHaveProperty("stateMessage");
    expect(backendStore).toHaveProperty("deviceInfo");
    expect(backendStore).toHaveProperty("version");
    expect(backendStore).toHaveProperty("lastError");
    expect(backendStore).toHaveProperty("apiBaseUrl");
    expect(backendStore).toHaveProperty("wsUrl");
    expect(backendStore).toHaveProperty("obsUrl");
    expect(backendStore).toHaveProperty("syncUrl");
  });

  it("test_exports_expected_methods", () => {
    expect(typeof backendStore.setPort).toBe("function");
    expect(typeof backendStore.connect).toBe("function");
    expect(typeof backendStore.disconnect).toBe("function");
    expect(typeof backendStore.apiUrl).toBe("function");
    expect(typeof backendStore.apiFetch).toBe("function");
    expect(typeof backendStore.apiGet).toBe("function");
    expect(typeof backendStore.apiPost).toBe("function");
    expect(typeof backendStore.apiPut).toBe("function");
  });

  it("test_obsUrl_derives_from_port", () => {
    backendStore.setPort(8081);
    expect(backendStore.obsUrl).toBe("http://localhost:8080");
  });

  it("test_apiBaseUrl_uses_port", () => {
    backendStore.setPort(8081);
    expect(backendStore.apiBaseUrl).toBe("http://localhost:8081");
  });

  it("test_wsUrl_uses_port", () => {
    backendStore.setPort(8081);
    expect(backendStore.wsUrl).toBe("ws://localhost:8081/ws/control");
  });

  it("test_initial_state", () => {
    // After disconnect() in beforeEach, state should be disconnected
    expect(backendStore.connectionState).toBe("disconnected");
    expect(backendStore.appState).toBe("initializing");
  });
});