Implement most of status system (still kinda bootycheeks at checking if

you're connected), fionally fix prettierrc

src/routes/api/updates/+server.ts

@@ -0,0 +1,48 @@
+interface SubscribedTo {
+  subscribed: string[];
+  userId: string;
+  controller: ReadableStreamDefaultController;
+}
+
+export const _clients = new Map<string, SubscribedTo>();
+export function _sendToSubscribers(userId: string, payload: unknown) {
+  for (const client of _clients) {
+    if (client[1].subscribed.includes(userId)) {
+      try {
+        client[1].controller.enqueue(`data: ${JSON.stringify(payload)}\n\n`);
+      } catch {
+        _clients.delete(client[0]);
+      }
+    }
+  }
+}
+export async function GET({ locals, request }) {
+  if (!locals.user) {
+    return new Response('No authentication', { status: 401 });
+  }
+
+  const subscribed = locals.user.friends.map((z) => z.id);
+  const reqId = crypto.randomUUID();
+
+  const stream = new ReadableStream({
+    start(controller) {
+      _clients.set(reqId, { subscribed, userId: locals.user!.id, controller });
+      console.log(`SSE Client opened. ${_clients.size}`);
+
+      controller.enqueue(`data: ${JSON.stringify({ type: 'connected' })}\n\n`);
+
+      request.signal.addEventListener('abort', () => {
+        _clients.delete(reqId);
+        console.log(`SSE Client aborted. ${_clients.size}`);
+      });
+    }
+  });
+
+  return new Response(stream, {
+    headers: {
+      'Content-Type': 'text/event-stream',
+      'Cache-Control': 'no-cache',
+      Connection: 'keep-alive'
+    }
+  });
+}