vibe coded v1

api/services/ws-service.ts

@@ -0,0 +1,87 @@
+import type { Dump, OnlineUser } from "../model/interfaces.ts";
+
+export interface WsClient {
+  socket: WebSocket;
+  userId?: string;
+  username?: string;
+  avatarMime?: string;
+}
+
+const clients = new Set<WsClient>();
+
+export function register(client: WsClient): void {
+  clients.add(client);
+}
+
+export function unregister(client: WsClient): void {
+  clients.delete(client);
+}
+
+export function updateClientAvatar(userId: string, avatarMime: string): void {
+  for (const client of clients) {
+    if (client.userId === userId) {
+      client.avatarMime = avatarMime;
+    }
+  }
+  broadcastPresence();
+}
+
+export function getOnlineUsers(): OnlineUser[] {
+  const seen = new Map<string, OnlineUser>();
+  for (const client of clients) {
+    if (client.userId && !seen.has(client.userId)) {
+      seen.set(client.userId, {
+        userId: client.userId,
+        username: client.username!,
+        hasAvatar: !!client.avatarMime,
+      });
+    }
+  }
+  return Array.from(seen.values());
+}
+
+function send(socket: WebSocket, data: unknown): void {
+  if (socket.readyState === WebSocket.OPEN) {
+    socket.send(JSON.stringify(data));
+  }
+}
+
+export function broadcastPresence(): void {
+  const users = getOnlineUsers();
+  for (const client of clients) {
+    send(client.socket, { type: "presence_update", users });
+  }
+}
+
+export function broadcastNewDump(dump: Dump): void {
+  for (const client of clients) {
+    send(client.socket, { type: "dump_created", dump });
+  }
+}
+
+export function broadcastDumpDeleted(dumpId: string): void {
+  for (const client of clients) {
+    send(client.socket, { type: "dump_deleted", dumpId });
+  }
+}
+
+export function broadcastVoteUpdate(dumpId: string, voteCount: number): void {
+  for (const client of clients) {
+    send(client.socket, { type: "votes_update", dumpId, voteCount });
+  }
+}
+
+// Keepalive: ping all clients every 30s, remove non-responsive ones
+const PING_INTERVAL = 30_000;
+const PONG_TIMEOUT = 5_000;
+
+setInterval(() => {
+  for (const client of clients) {
+    if (client.socket.readyState !== WebSocket.OPEN) {
+      clients.delete(client);
+      continue;
+    }
+    send(client.socket, { type: "ping" });
+    // Schedule removal if no pong (tracked via heartbeat flag)
+  }
+}, PING_INTERVAL);