added media fixes, search, push updates, pwa, metrics. preparing release 1.0

server/internal/realtime/hub.go

@@ -8,6 +8,8 @@ import (
 	"sync"
 
 	"github.com/coder/websocket"
+
+	"messenger/internal/platform/metrics"
 )
 
 // MembershipProvider resolves conversation membership and read state.
@@ -145,6 +147,13 @@ func (h *Hub) PublishReactionChanged(conversationID, messageID, userID int64, em
 	h.sendToConversation(conversationID, envelope{Type: evtType, Data: mustMarshal(evt)}, 0)
 }
 
+// IsOnline reports whether a user has at least one active WebSocket connection.
+func (h *Hub) IsOnline(userID int64) bool {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	return len(h.conns[userID]) > 0
+}
+
 func (h *Hub) register(c *client, conversationIDs []int64) {
 	h.mu.Lock()
 	defer h.mu.Unlock()
@@ -158,6 +167,7 @@ func (h *Hub) register(c *client, conversationIDs []int64) {
 		}
 		h.subs[cid][c.userID] = struct{}{}
 	}
+	metrics.RecordWS(1)
 }
 
 func (h *Hub) unregister(c *client, conversationIDs []int64) {
@@ -177,6 +187,7 @@ func (h *Hub) unregister(c *client, conversationIDs []int64) {
 			}
 		}
 	}
+	metrics.RecordWS(-1)
 	close(c.done)
 }