Feature: adds screen sharing

frontend/src/api/player.tsx

@@ -53,6 +53,7 @@ export enum ServerEvent {
   FavoritesUpdate     = "favorites_update",
   MetadataUpdate      = "metadata_update",
   MPDUpdate           = "mpd_update",
+  ScreenShare         = "screen_share",
 }
 
 export const API = {
@@ -90,6 +91,10 @@ export const API = {
   async play(): Promise<void> {
     await fetch('/api/play', { method: 'POST' });
   },
+
+  async stop(): Promise<void> {
+    await fetch('/api/stop', { method: 'POST' });
+  },
   
   async pause(): Promise<void> {
     await fetch('/api/pause', { method: 'POST' });
@@ -168,5 +173,11 @@ export const API = {
       },
       body: JSON.stringify({ title }),
     });
+  },
+
+  startScreenShare(mimeType: string): WebSocket {
+    const protocol = window.location.protocol === 'https:' ? 'wss' : 'ws';
+    const ws = new WebSocket(`${protocol}://${window.location.host}/api/screenshare?mimeType=${mimeType}`);
+    return ws;
   }
 };