feat(playlists): share playlists with revocable read-only links

apps/web/src/shared/lib/share.test.ts

@@ -1,5 +1,6 @@
 import { afterEach, describe, expect, it, vi } from 'vitest';
-import { shareTrack } from './share';
+import { sharePlaylist, shareTrack } from './share';
+import * as desktop from '../../desktop';
 
 afterEach(() => vi.restoreAllMocks());
 
@@ -38,3 +39,34 @@ describe('shareTrack', () => {
     finally { vi.unstubAllGlobals(); }
   });
 });
+
+
+describe('sharePlaylist', () => {
+  it('copies the shared page URL without exposing streaming links', async () => {
+    const writeText = vi.fn().mockResolvedValue(undefined);
+    vi.stubGlobal('navigator', { userAgent: 'Windows', clipboard: { writeText } });
+    try {
+      expect(await sharePlaylist('token', 'Mix')).toBe('copied');
+      expect(writeText).toHaveBeenCalledWith(`${window.location.origin}/shared/playlist/token`);
+    } finally { vi.unstubAllGlobals(); }
+  });
+
+  it('uses the configured music server when sharing from desktop', async () => {
+    const writeText = vi.fn().mockResolvedValue(undefined);
+    vi.spyOn(desktop, 'desktopHandle').mockReturnValue({ server: 'https://music.example' } as desktop.DesktopHandle);
+    vi.stubGlobal('navigator', { userAgent: 'Windows', clipboard: { writeText } });
+    try {
+      await sharePlaylist('token', 'Mix');
+      expect(writeText).toHaveBeenCalledWith('https://music.example/shared/playlist/token');
+    } finally { vi.unstubAllGlobals(); }
+  });
+
+  it('opens the native share sheet on mobile browsers', async () => {
+    const share = vi.fn().mockResolvedValue(undefined);
+    vi.stubGlobal('navigator', { userAgent: 'Android', share });
+    try {
+      expect(await sharePlaylist('token', 'Mix')).toBe('shared');
+      expect(share).toHaveBeenCalledWith({ title: 'Mix', url: `${window.location.origin}/shared/playlist/token` });
+    } finally { vi.unstubAllGlobals(); }
+  });
+});

apps/web/src/shared/lib/share.ts

@@ -1,8 +1,16 @@
-import { trackShareUrl } from '@pipu/core';
+import { playlistShareUrl, trackShareUrl } from '@pipu/core';
+import { desktopHandle } from '../../desktop';
 
 /** Desktop always copies; mobile browsers can open their native share sheet. */
 export async function shareTrack(id: string, title: string): Promise<'copied' | 'shared' | 'cancelled'> {
-  const url = trackShareUrl(window.location.origin, id);
+  return shareUrl(trackShareUrl(desktopHandle()?.server ?? window.location.origin, id), title);
+}
+
+export async function sharePlaylist(shareId: string, title: string): Promise<'copied' | 'shared' | 'cancelled'> {
+  return shareUrl(playlistShareUrl(desktopHandle()?.server ?? window.location.origin, shareId), title);
+}
+
+async function shareUrl(url: string, title: string): Promise<'copied' | 'shared' | 'cancelled'> {
   if (/Android|iPhone|iPad|iPod/i.test(navigator.userAgent) && navigator.share) {
     try {
       await navigator.share({ title, url });