user no stays in cache forever, fix some hubs bugs and add new enpoints

packages/httpRequest/get.go

@@ -36,6 +36,45 @@ func getUserByToken(ctx context.Context, token string) (*types.User, error) {
 	return getUserById(ctx, userId)
 }
 
+func getConnection(ctx context.Context, connectionIdStr string, user *types.User) (*types.Connection, bool) {
+	connectionId, err := convertions.StringToUuid(connectionIdStr)
+	if err != nil {
+		return nil, false
+	}
+	if conn, ok := cache.GetConnection(user, connectionId); ok {
+		return conn, true
+	}
+	conn, err := postgresql.ConnectionGetById(ctx, connectionId)
+	if err != nil {
+		return nil, false
+	}
+	if conn.RequestorId != user.Id && conn.RecipientId != user.Id {
+		return nil, false
+	}
+	user.Mu.Lock()
+	user.Connections[conn.Id] = conn
+	user.Mu.Unlock()
+	return conn, true
+}
+
+func getChannelFromUser(user *types.User, channelIdStr string) (*types.HubChannel, bool) {
+	channelId, err := convertions.StringToUuid(channelIdStr)
+	if err != nil {
+		return nil, false
+	}
+	user.Mu.RLock()
+	defer user.Mu.RUnlock()
+	for _, hub := range user.Hubs {
+		hub.Mu.RLock()
+		ch, ok := hub.Channels[channelId]
+		hub.Mu.RUnlock()
+		if ok {
+			return ch, true
+		}
+	}
+	return nil, false
+}
+
 func getConnectionWithResponseOnFail(response http.ResponseWriter, connectionIdStr string, user *types.User) (*types.Connection, bool) {
 	connectionId, err := convertions.StringToUuid(connectionIdStr)
 	if err != nil {