feat(web): add WebSocket transport for message event streaming with SSE fallback (#764)

* feat: add websocket message stream transport * fix: avoid false missing session directories in sidebar * fix: re-probe project root session directories * refactor: use button group for message stream transport * fix: resolve chat input hook dependency warning --------- Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
2026-04-17 11:07:26 +03:00
parent fd8972a7d9
commit bee9d19f3a
26 changed files with 1515 additions and 163 deletions
@@ -0,0 +1,65 @@
+import { describe, expect, it } from 'bun:test';
+
+import { createGlobalUiEventBroadcaster } from './runtime.js';
+
+describe('event stream broadcaster', () => {
+  it('fans out synthetic events to SSE and WS clients', () => {
+    const sseEvents = [];
+    const wsPayloads = [];
+    const sseClient = { id: 'sse-1' };
+    const wsClient = {
+      readyState: 1,
+      send(payload) {
+        wsPayloads.push(JSON.parse(payload));
+      },
+    };
+
+    const broadcast = createGlobalUiEventBroadcaster({
+      sseClients: new Set([sseClient]),
+      wsClients: new Set([wsClient]),
+      writeSseEvent(res, payload) {
+        sseEvents.push({ res, payload });
+      },
+    });
+
+    broadcast({ type: 'openchamber:session-status' }, { eventId: 'evt-1', directory: '/tmp/project' });
+
+    expect(sseEvents).toEqual([
+      {
+        res: sseClient,
+        payload: { type: 'openchamber:session-status' },
+      },
+    ]);
+    expect(wsPayloads).toEqual([
+      {
+        type: 'event',
+        payload: { type: 'openchamber:session-status' },
+        eventId: 'evt-1',
+        directory: '/tmp/project',
+      },
+    ]);
+  });
+
+  it('removes websocket clients that fail to receive a payload', () => {
+    const wsClients = new Set([
+      {
+        readyState: 1,
+        send() {
+          throw new Error('socket write failed');
+        },
+      },
+    ]);
+
+    const broadcast = createGlobalUiEventBroadcaster({
+      sseClients: new Set(),
+      wsClients,
+      writeSseEvent() {
+        throw new Error('should not be called');
+      },
+    });
+
+    broadcast({ type: 'openchamber:notification' });
+
+    expect(wsClients.size).toBe(0);
+  });
+});