Method ServeHTTP

apps/cli/internal/web/sse.go:36–71

ServeHTTP handles SSE connections at /api/events.

(w http.ResponseWriter, r *http.Request)

// ServeHTTP handles SSE connections at /api/events.
func (b *SSEBroker) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	flusher, ok := w.(http.Flusher)
	if !ok {
		http.Error(w, "streaming unsupported", http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "text/event-stream")
	w.Header().Set("Cache-Control", "no-cache")
	w.Header().Set("Connection", "keep-alive")

	ch := make(chan struct{}, 1)
	b.mu.Lock()
	b.clients[ch] = struct{}{}
	b.mu.Unlock()

	defer func() {
		b.mu.Lock()
		delete(b.clients, ch)
		b.mu.Unlock()
	}()

	// Send initial connected event
	fmt.Fprintf(w, "event: connected\ndata: ok\n\n")
	flusher.Flush()

	for {
		select {
		case <-ch:
			fmt.Fprintf(w, "event: reload\ndata: changed\n\n")
			flusher.Flush()
		case <-r.Context().Done():
			return
		}
	}
}