feat(web): add queue notification feed

apps/web/src/components/mission-control/QueueNotificationFeed.test.tsx

@@ -0,0 +1,225 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { act, render, screen, waitFor } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import type { ButtonHTMLAttributes, HTMLAttributes, ReactNode } from "react";
+
+vi.mock("date-fns", () => ({
+  formatDistanceToNow: (): string => "5 minutes ago",
+}));
+
+interface MockButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
+  children: ReactNode;
+}
+
+interface MockContainerProps extends HTMLAttributes<HTMLElement> {
+  children: ReactNode;
+}
+
+interface MockEventSourceInstance {
+  url: string;
+  onerror: ((event: Event) => void) | null;
+  onmessage: ((event: MessageEvent<string>) => void) | null;
+  close: ReturnType<typeof vi.fn>;
+  emitMessage: (payload: unknown) => void;
+}
+
+interface QueueNotification {
+  id: string;
+  agent: string;
+  filename: string;
+  payload: unknown;
+  createdAt: string;
+}
+
+const mockApiGet = vi.fn<(endpoint: string) => Promise<QueueNotification[]>>();
+const mockApiPost = vi.fn<(endpoint: string) => Promise<{ success: true; id: string }>>();
+const mockShowToast = vi.fn<(message: string, variant?: string) => void>();
+
+let mockEventSourceInstances: MockEventSourceInstance[] = [];
+
+const MockEventSource = vi.fn(function (this: MockEventSourceInstance, url: string): void {
+  this.url = url;
+  this.onerror = null;
+  this.onmessage = null;
+  this.close = vi.fn();
+  this.emitMessage = (payload: unknown): void => {
+    this.onmessage?.(new MessageEvent("message", { data: JSON.stringify(payload) }));
+  };
+
+  mockEventSourceInstances.push(this);
+});
+
+vi.mock("@/lib/api/client", () => ({
+  apiGet: (endpoint: string): Promise<QueueNotification[]> => mockApiGet(endpoint),
+  apiPost: (endpoint: string): Promise<{ success: true; id: string }> => mockApiPost(endpoint),
+}));
+
+vi.mock("@mosaic/ui", () => ({
+  useToast: (): { showToast: typeof mockShowToast; removeToast: ReturnType<typeof vi.fn> } => ({
+    showToast: mockShowToast,
+    removeToast: vi.fn(),
+  }),
+}));
+
+vi.mock("@/components/ui/button", () => ({
+  Button: ({ children, ...props }: MockButtonProps): React.JSX.Element => (
+    <button {...props}>{children}</button>
+  ),
+}));
+
+vi.mock("@/components/ui/badge", () => ({
+  Badge: ({ children, ...props }: MockContainerProps): React.JSX.Element => (
+    <span {...props}>{children}</span>
+  ),
+}));
+
+vi.mock("@/components/ui/card", () => ({
+  Card: ({ children, ...props }: MockContainerProps): React.JSX.Element => (
+    <section {...props}>{children}</section>
+  ),
+  CardHeader: ({ children, ...props }: MockContainerProps): React.JSX.Element => (
+    <header {...props}>{children}</header>
+  ),
+  CardContent: ({ children, ...props }: MockContainerProps): React.JSX.Element => (
+    <div {...props}>{children}</div>
+  ),
+  CardTitle: ({ children, ...props }: MockContainerProps): React.JSX.Element => (
+    <h2 {...props}>{children}</h2>
+  ),
+}));
+
+vi.mock("@/components/ui/collapsible", () => ({
+  Collapsible: ({ children }: MockContainerProps): React.JSX.Element => <div>{children}</div>,
+}));
+
+vi.mock("@/components/ui/scroll-area", () => ({
+  ScrollArea: ({ children, ...props }: MockContainerProps): React.JSX.Element => (
+    <div {...props}>{children}</div>
+  ),
+}));
+
+vi.mock("@/components/ui/skeleton", () => ({
+  Skeleton: (props: HTMLAttributes<HTMLDivElement>): React.JSX.Element => <div {...props} />,
+}));
+
+import { QueueNotificationFeed } from "./QueueNotificationFeed";
+
+function latestEventSource(): MockEventSourceInstance {
+  const instance = mockEventSourceInstances[mockEventSourceInstances.length - 1];
+  if (!instance) {
+    throw new Error("Expected an EventSource instance");
+  }
+  return instance;
+}
+
+function makeNotification(overrides: Partial<QueueNotification>): QueueNotification {
+  return {
+    id: "notif-1",
+    agent: "mosaic",
+    filename: "notif-1.json",
+    payload: {
+      taskId: "MS24-WEB-001",
+      eventType: "task.ready",
+    },
+    createdAt: "2026-03-08T23:00:00.000Z",
+    ...overrides,
+  };
+}
+
+describe("QueueNotificationFeed", (): void => {
+  beforeEach((): void => {
+    vi.clearAllMocks();
+    vi.stubGlobal("EventSource", MockEventSource);
+    vi.stubGlobal("fetch", vi.fn());
+    mockEventSourceInstances = [];
+    mockApiGet.mockResolvedValue([]);
+    mockApiPost.mockResolvedValue({ success: true, id: "notif-1" });
+  });
+
+  afterEach((): void => {
+    vi.unstubAllGlobals();
+  });
+
+  it("loads and renders notifications grouped by agent", async (): Promise<void> => {
+    mockApiGet.mockResolvedValue([
+      makeNotification({ id: "notif-1", agent: "mosaic" }),
+      makeNotification({
+        id: "notif-2",
+        agent: "dyor",
+        payload: { taskId: "MS24-WEB-002", eventType: "task.blocked" },
+      }),
+    ]);
+
+    render(<QueueNotificationFeed />);
+
+    await waitFor((): void => {
+      expect(mockApiGet).toHaveBeenCalledWith("/api/orchestrator/api/queue/notifications");
+    });
+
+    expect(screen.getByText("mosaic")).toBeInTheDocument();
+    expect(screen.getByText("dyor")).toBeInTheDocument();
+    expect(screen.getByText("MS24-WEB-001")).toBeInTheDocument();
+    expect(screen.getByText("task.ready")).toBeInTheDocument();
+    expect(screen.getAllByText("5 minutes ago")).toHaveLength(2);
+    expect(MockEventSource).toHaveBeenCalledWith("/api/orchestrator/queue/notifications/stream");
+  });
+
+  it("acknowledges a notification and removes it from the list", async (): Promise<void> => {
+    const user = userEvent.setup();
+    mockApiGet.mockResolvedValue([makeNotification({ id: "notif-ack" })]);
+
+    render(<QueueNotificationFeed />);
+
+    await waitFor((): void => {
+      expect(screen.getByText("MS24-WEB-001")).toBeInTheDocument();
+    });
+
+    await user.click(screen.getByRole("button", { name: "ACK notification MS24-WEB-001" }));
+
+    await waitFor((): void => {
+      expect(mockApiPost).toHaveBeenCalledWith(
+        "/api/orchestrator/api/queue/notifications/notif-ack/ack"
+      );
+    });
+
+    await waitFor((): void => {
+      expect(screen.getByText("No pending notifications")).toBeInTheDocument();
+    });
+  });
+
+  it("renders the empty state when there are no notifications", async (): Promise<void> => {
+    mockApiGet.mockResolvedValue([]);
+
+    render(<QueueNotificationFeed />);
+
+    await waitFor((): void => {
+      expect(screen.getByText("No pending notifications")).toBeInTheDocument();
+    });
+  });
+
+  it("refreshes the list when an SSE message arrives", async (): Promise<void> => {
+    mockApiGet.mockResolvedValue([makeNotification({ id: "notif-before" })]);
+
+    render(<QueueNotificationFeed />);
+
+    await waitFor((): void => {
+      expect(screen.getByText("MS24-WEB-001")).toBeInTheDocument();
+    });
+
+    act(() => {
+      latestEventSource().emitMessage([
+        makeNotification({
+          id: "notif-after",
+          agent: "sage",
+          payload: { taskId: "MS24-WEB-003", eventType: "task.failed" },
+        }),
+      ]);
+    });
+
+    await waitFor((): void => {
+      expect(screen.getByText("sage")).toBeInTheDocument();
+      expect(screen.getByText("MS24-WEB-003")).toBeInTheDocument();
+      expect(screen.getByText("task.failed")).toBeInTheDocument();
+    });
+  });
+});