feat(notifications): add channel routing matrix, daily summary, and task watch button

frontend/src/features/settings/__tests__/UserSettingsView.alarms.test.tsx

@@ -0,0 +1,106 @@
+import React from 'react';
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, fireEvent, waitFor } from '@testing-library/react';
+import { UserSettingsView } from '../UserSettingsView';
+import { api } from '../../../lib/api';
+import { User } from '../../../lib/types';
+
+vi.mock('../../../lib/api', async () => {
+  const actual = await vi.importActual<typeof import('../../../lib/api')>('../../../lib/api');
+  return {
+    ...actual,
+    api: {
+      ...actual.api,
+      getMe: vi.fn(async () => ({ isLastAdmin: false })),
+      getAuthStatus: vi.fn(async () => ({ demoMode: false })),
+      updateSettings: vi.fn(async (patch) => ({ ...baseUser, ...patch })),
+    },
+  };
+});
+
+const baseUser: User = {
+  id: 'u1',
+  email: 'anna@example.com',
+  displayName: 'Anna',
+  role: 'member',
+  isActive: true,
+  alarmChannels: ['email'],
+  createdAt: '2026-10-30T00:00:00Z',
+};
+
+describe('UserSettingsView notification matrix', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('derives events.due from alarmChannels, disables Discord without webhook, and saves the exact notificationSettings object', async () => {
+    const onUserUpdated = vi.fn();
+    render(
+      <UserSettingsView
+        currentUser={baseUser}
+        activeTheme="dark"
+        themes={[]}
+        customThemes={[]}
+        onThemeChange={() => {}}
+        onCustomThemesChange={() => {}}
+        onUserUpdated={onUserUpdated}
+        onBack={() => {}}
+      />
+    );
+
+    // Open "Alarme" section
+    fireEvent.click(screen.getByText('Alarme'));
+
+    // Without Discord webhook, Discord switches are disabled and hint is visible
+    const discordSwitches = screen.getAllByTitle('Bitte zuerst unten eine Discord Webhook URL eintragen');
+    expect(discordSwitches.length).toBe(5);
+    expect((discordSwitches[0] as HTMLButtonElement).disabled).toBe(true);
+    expect(screen.getByText(/Discord-Schalter sind deaktiviert/)).toBeTruthy();
+
+    // Enter a Discord Webhook URL to enable the Discord column
+    fireEvent.change(screen.getByPlaceholderText(/https:\/\/discord\.com\/api\/webhooks/), {
+      target: { value: 'https://discord.com/api/webhooks/123/abc' },
+    });
+
+    // Derive check: alarmChannels=['email'] -> due.email=true, due.discord=false
+    expect(screen.getByTitle('Fällige Aufgaben (sofort) – E-Mail').getAttribute('aria-checked')).toBe('true');
+    expect(screen.getByTitle('Fällige Aufgaben (sofort) – Discord').getAttribute('aria-checked')).toBe('false');
+
+    // Toggle settings in the matrix, daily summary, and global switches
+    fireEvent.click(screen.getByTitle('Fällige Aufgaben (sofort) – Discord'));
+    fireEvent.click(screen.getByTitle('Geteilte Aufgabe erledigt – E-Mail'));
+    fireEvent.click(screen.getByTitle('Beobachtete Aufgaben – Discord'));
+    fireEvent.click(screen.getByTitle('Alle Benachrichtigungen pausieren'));
+    fireEvent.click(screen.getByTitle('Auch eigene Änderungen an beobachteten Aufgaben melden'));
+    fireEvent.click(screen.getByTitle('Tageszusammenfassung'));
+    fireEvent.change(screen.getByLabelText('Uhrzeit der Tageszusammenfassung'), {
+      target: { value: '08:30' },
+    });
+    fireEvent.click(screen.getByTitle('Tageszusammenfassung – Discord'));
+
+    fireEvent.click(screen.getByRole('button', { name: 'Alarm-Einstellungen speichern' }));
+
+    await waitFor(() => expect(api.updateSettings).toHaveBeenCalledTimes(1));
+    expect(api.updateSettings).toHaveBeenCalledWith(
+      expect.objectContaining({
+        discordWebhookUrl: 'https://discord.com/api/webhooks/123/abc',
+        notificationSettings: {
+          paused: true,
+          includeOwnWatched: true,
+          events: {
+            due: { email: true, discord: true },
+            shared: { email: true, discord: false },
+            taskDone: { email: true, discord: false },
+            watched: { email: true, discord: false },
+          },
+          dailySummary: {
+            enabled: true,
+            time: '08:30',
+            email: true,
+            discord: true,
+          },
+        },
+      })
+    );
+  });
+});