From 8901a3e6131932b103a068c307edafc009cfe257 Mon Sep 17 00:00:00 2001
From: Plague Fox <plugfox@gmail.com>
Date: Thu, 3 Aug 2023 17:00:47 +0400
Subject: [PATCH] Add history to client

---
 lib/src/client/centrifuge.dart           | 59 ++++++++++++++++++++++--
 lib/src/client/centrifuge_interface.dart | 21 +++++++--
 2 files changed, 70 insertions(+), 10 deletions(-)

diff --git a/lib/src/client/centrifuge.dart b/lib/src/client/centrifuge.dart
index f66e0be..9d473ac 100644
--- a/lib/src/client/centrifuge.dart
+++ b/lib/src/client/centrifuge.dart
@@ -12,12 +12,14 @@ import 'package:centrifuge_dart/src/model/connect.dart';
 import 'package:centrifuge_dart/src/model/disconnect.dart';
 import 'package:centrifuge_dart/src/model/event.dart';
 import 'package:centrifuge_dart/src/model/exception.dart';
+import 'package:centrifuge_dart/src/model/history.dart';
 import 'package:centrifuge_dart/src/model/message.dart';
 import 'package:centrifuge_dart/src/model/presence.dart';
 import 'package:centrifuge_dart/src/model/presence_stats.dart';
 import 'package:centrifuge_dart/src/model/publication.dart';
 import 'package:centrifuge_dart/src/model/pushes_stream.dart';
 import 'package:centrifuge_dart/src/model/refresh.dart';
+import 'package:centrifuge_dart/src/model/stream_position.dart';
 import 'package:centrifuge_dart/src/model/subscribe.dart';
 import 'package:centrifuge_dart/src/model/unsubscribe.dart';
 import 'package:centrifuge_dart/src/subscription/client_subscription_manager.dart';
@@ -45,6 +47,7 @@ final class Centrifuge extends CentrifugeBase
         CentrifugeServerSubscriptionMixin,
         CentrifugePublicationsMixin,
         CentrifugePresenceMixin,
+        CentrifugeHistoryMixin,
         CentrifugeQueueMixin {
   /// {@macro centrifuge}
   Centrifuge([CentrifugeConfig? config])
@@ -604,11 +607,7 @@ base mixin CentrifugePublicationsMixin
 
 /// Mixin responsible for presence.
 /// {@nodoc}
-base mixin CentrifugePresenceMixin
-    on
-        CentrifugeBase,
-        CentrifugeErrorsMixin,
-        CentrifugeClientSubscriptionMixin {
+base mixin CentrifugePresenceMixin on CentrifugeBase, CentrifugeErrorsMixin {
   @override
   Future<CentrifugePresence> presence(String channel) async {
     try {
@@ -646,6 +645,56 @@ base mixin CentrifugePresenceMixin
   }
 }
 
+/// Mixin responsible for history.
+/// {@nodoc}
+base mixin CentrifugeHistoryMixin on CentrifugeBase, CentrifugeErrorsMixin {
+  @override
+  Future<CentrifugeHistory> history(
+    String channel, {
+    int? limit,
+    CentrifugeStreamPosition? since,
+    bool? reverse,
+  }) async {
+    try {
+      await ready();
+      return await _transport.history(
+        channel,
+        limit: limit,
+        since: since,
+        reverse: reverse,
+      );
+    } on CentrifugeException catch (error, stackTrace) {
+      _emitError(error, stackTrace);
+      rethrow;
+    } on Object catch (error, stackTrace) {
+      final centrifugeException = CentrifugeFetchException(
+        message: 'Error while fetching history for channel $channel',
+        error: error,
+      );
+      _emitError(centrifugeException, stackTrace);
+      Error.throwWithStackTrace(centrifugeException, stackTrace);
+    }
+  }
+
+  @override
+  Future<CentrifugePresenceStats> presenceStats(String channel) async {
+    try {
+      await ready();
+      return await _transport.presenceStats(channel);
+    } on CentrifugeException catch (error, stackTrace) {
+      _emitError(error, stackTrace);
+      rethrow;
+    } on Object catch (error, stackTrace) {
+      final centrifugeException = CentrifugeFetchException(
+        message: 'Error while fetching presence for channel $channel',
+        error: error,
+      );
+      _emitError(centrifugeException, stackTrace);
+      Error.throwWithStackTrace(centrifugeException, stackTrace);
+    }
+  }
+}
+
 /// Mixin responsible for queue.
 /// SHOULD BE LAST MIXIN.
 /// {@nodoc}
diff --git a/lib/src/client/centrifuge_interface.dart b/lib/src/client/centrifuge_interface.dart
index 6123359..0d1be9d 100644
--- a/lib/src/client/centrifuge_interface.dart
+++ b/lib/src/client/centrifuge_interface.dart
@@ -3,9 +3,11 @@
 import 'dart:async';
 
 import 'package:centrifuge_dart/centrifuge.dart';
+import 'package:centrifuge_dart/src/model/history.dart';
 import 'package:centrifuge_dart/src/model/presence.dart';
 import 'package:centrifuge_dart/src/model/presence_stats.dart';
 import 'package:centrifuge_dart/src/model/pushes_stream.dart';
+import 'package:centrifuge_dart/src/model/stream_position.dart';
 
 /// Centrifuge client interface.
 abstract interface class ICentrifuge
@@ -15,7 +17,8 @@ abstract interface class ICentrifuge
         ICentrifugePublicationSender,
         ICentrifugeEventReceiver,
         ICentrifugeClientSubscriptionsManager,
-        ICentrifugePresenceOwner {
+        ICentrifugePresenceOwner,
+        ICentrifugeHistoryOwner {
   /// Connect to the server.
   /// [url] is a URL of endpoint.
   Future<void> connect(String url);
@@ -37,10 +40,6 @@ abstract interface class ICentrifuge
 
   /// Send arbitrary RPC and wait for response.
   /* Future<void> rpc(String method, data); */
-
-  /// Send History command.
-  /* Future<HistoryResult> history(String channel,
-      {int limit = 0, StreamPosition? since, bool reverse = false}); */
 }
 
 /// Centrifuge client state owner interface.
@@ -110,3 +109,15 @@ abstract interface class ICentrifugePresenceOwner {
   /// Fetch presence stats information inside a channel.
   Future<CentrifugePresenceStats> presenceStats(String channel);
 }
+
+/// Centrifuge history owner interface.
+abstract interface class ICentrifugeHistoryOwner {
+  /// Fetch publication history inside a channel.
+  /// Only for channels where history is enabled.
+  Future<CentrifugeHistory> history(
+    String channel, {
+    int? limit,
+    CentrifugeStreamPosition? since,
+    bool? reverse,
+  });
+}