Use groupChat tracker better

bindings/group.go

@@ -98,15 +98,18 @@ type GroupRequest interface {
 	Callback(payload []byte)
 }
 
-// NewManager creates a bindings-layer group chat manager.
+// LoadOrNewManager creates a bindings-layer group chat manager.
 //
 // Parameters:
 //  - e2eID - e2e object ID in the tracker.
+//  - groupID - GroupChat object ID in the tracker, given from previous call to LoadOrNewManager.
 //  - requestFunc - a callback to handle group chat requests.
 //  - processor - the group chat message processor.
-func NewManager(e2eID int, requestFunc GroupRequest,
+func LoadOrNewManager(e2eID, groupID int, requestFunc GroupRequest,
 	processor GroupChatProcessor) (*GroupChat, error) {
-
+	// Retrieve from singleton
+	groupChat, err := groupChatTrackerSingleton.get(groupID)
+	if err != nil { // If not present, create/load group chat manager
 		// Get user from singleton
 		user, err := e2eTrackerSingleton.get(e2eID)
 		if err != nil {
@@ -130,6 +133,9 @@ func NewManager(e2eID int, requestFunc GroupRequest,
 
 		// Construct wrapper
 		return groupChatTrackerSingleton.make(gcInt), nil
+
+	}
+	return groupChat, nil
 }
 
 // GetID returns the groupChatTracker ID for the GroupChat object.