refactor/channel & ipc (#349)

Co-authored-by: paisley <8197966+su8su@users.noreply.github.com>
Co-authored-by: zuolingxuan <zuolingxuan@bytedance.com>

tests/unit/gateway-events.test.ts

@@ -0,0 +1,41 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+const hostApiFetchMock = vi.fn();
+const subscribeHostEventMock = vi.fn();
+
+vi.mock('@/lib/host-api', () => ({
+  hostApiFetch: (...args: unknown[]) => hostApiFetchMock(...args),
+}));
+
+vi.mock('@/lib/host-events', () => ({
+  subscribeHostEvent: (...args: unknown[]) => subscribeHostEventMock(...args),
+}));
+
+describe('gateway store event wiring', () => {
+  beforeEach(() => {
+    vi.resetModules();
+    vi.clearAllMocks();
+  });
+
+  it('subscribes to host events through subscribeHostEvent on init', async () => {
+    hostApiFetchMock.mockResolvedValueOnce({ state: 'running', port: 18789 });
+
+    const handlers = new Map<string, (payload: unknown) => void>();
+    subscribeHostEventMock.mockImplementation((eventName: string, handler: (payload: unknown) => void) => {
+      handlers.set(eventName, handler);
+      return () => {};
+    });
+
+    const { useGatewayStore } = await import('@/stores/gateway');
+    await useGatewayStore.getState().init();
+
+    expect(subscribeHostEventMock).toHaveBeenCalledWith('gateway:status', expect.any(Function));
+    expect(subscribeHostEventMock).toHaveBeenCalledWith('gateway:error', expect.any(Function));
+    expect(subscribeHostEventMock).toHaveBeenCalledWith('gateway:notification', expect.any(Function));
+    expect(subscribeHostEventMock).toHaveBeenCalledWith('gateway:chat-message', expect.any(Function));
+    expect(subscribeHostEventMock).toHaveBeenCalledWith('gateway:channel-status', expect.any(Function));
+
+    handlers.get('gateway:status')?.({ state: 'stopped', port: 18789 });
+    expect(useGatewayStore.getState().status.state).toBe('stopped');
+  });
+});