From 8c5db3438b95849b9e90159ac243715df6acf131 Mon Sep 17 00:00:00 2001
From: Plague Fox <plugfox@gmail.com>
Date: Thu, 3 Aug 2023 16:36:20 +0400
Subject: [PATCH] On push event

---
 lib/src/client/centrifuge.dart  | 3 +++
 lib/src/client/observer.dart    | 4 ++++
 lib/src/model/channel_push.dart | 5 +++++
 lib/src/model/event.dart        | 3 +++
 4 files changed, 15 insertions(+)

diff --git a/lib/src/client/centrifuge.dart b/lib/src/client/centrifuge.dart
index 6a89c88..b487be4 100644
--- a/lib/src/client/centrifuge.dart
+++ b/lib/src/client/centrifuge.dart
@@ -97,6 +97,7 @@ abstract base class CentrifugeBase implements ICentrifuge {
   @protected
   @mustCallSuper
   void _initCentrifuge() {
+    logger.fine('Centrifuge client initialized');
     Centrifuge.observer?.onCreate(this);
   }
 
@@ -124,6 +125,7 @@ abstract base class CentrifugeBase implements ICentrifuge {
   @mustCallSuper
   Future<void> close() async {
     await _transport.close();
+    logger.fine('Centrifuge client closed');
     Centrifuge.observer?.onClose(this);
   }
 }
@@ -187,6 +189,7 @@ base mixin CentrifugeEventReceiverMixin
   @pragma('vm:prefer-inline')
   @pragma('dart2js:tryInline')
   void _onEvent(CentrifugeEvent event) {
+    Centrifuge.observer?.onEvent(this, event);
     if (event is! CentrifugeChannelPush) return;
     // This is a push to a channel.
     _clientSubscriptionManager.onPush(event);
diff --git a/lib/src/client/observer.dart b/lib/src/client/observer.dart
index 9a2f032..fb0bd89 100644
--- a/lib/src/client/observer.dart
+++ b/lib/src/client/observer.dart
@@ -1,5 +1,6 @@
 import 'package:centrifuge_dart/centrifuge.dart';
 import 'package:centrifuge_dart/src/client/centrifuge_interface.dart';
+import 'package:centrifuge_dart/src/model/event.dart';
 
 /// An interface for observing the behavior of Centrifuge instances.
 abstract class CentrifugeObserver {
@@ -10,6 +11,9 @@ abstract class CentrifugeObserver {
   /// to [CentrifugeState$Connecting].
   void onConnected(ICentrifuge client, CentrifugeState$Connected state) {}
 
+  /// Called whenever a [ICentrifuge] client receives a [CentrifugeEvent].
+  void onEvent(ICentrifuge client, CentrifugeEvent event) {}
+
   /// Called whenever a [ICentrifuge] client changes its state
   /// to [CentrifugeState$Disconnected].
   void onDisconnected(ICentrifuge client, CentrifugeState$Disconnected state) {}
diff --git a/lib/src/model/channel_push.dart b/lib/src/model/channel_push.dart
index e6f8873..d47803d 100644
--- a/lib/src/model/channel_push.dart
+++ b/lib/src/model/channel_push.dart
@@ -1,4 +1,5 @@
 import 'package:centrifuge_dart/src/model/event.dart';
+import 'package:meta/meta.dart';
 
 /// {@template centrifuge_channel_push}
 /// Base class for all channel push events.
@@ -12,4 +13,8 @@ abstract base class CentrifugeChannelPush extends CentrifugeEvent {
 
   /// Channel
   final String channel;
+
+  @override
+  @nonVirtual
+  bool get isPush => true;
 }
diff --git a/lib/src/model/event.dart b/lib/src/model/event.dart
index d8b0656..318d8a3 100644
--- a/lib/src/model/event.dart
+++ b/lib/src/model/event.dart
@@ -15,4 +15,7 @@ abstract base class CentrifugeEvent {
 
   /// Timestamp of event
   final DateTime timestamp;
+
+  /// Whether this event is a push event.
+  bool get isPush;
 }