progress on slow mode

packages/stream_chat/lib/src/client/channel.dart

@@ -130,6 +130,9 @@ class Channel {
     return state?.channelStateStream.map((cs) => cs.channel?.cooldown);
   }
 
+  ///
+  DateTime? cooldownStartedAt;
+
   /// Channel creation date
   DateTime? get createdAt {
     _checkInitialized();
@@ -429,6 +432,9 @@ class Channel {
         skipPush: skipPush,
       );
       state!.addMessage(response.message);
+      if (cooldown! > 0) {
+        cooldownStartedAt = DateTime.now();
+      }
       return response;
     } catch (e) {
       if (e is StreamChatNetworkError && e.isRetriable) {
@@ -827,6 +833,20 @@ class Channel {
     return _client.updateChannelPartial(id!, type, set: set, unset: unset);
   }
 
+  /// Enable slow mode
+  Future<UpdateChannelResponse> enableSlowMode({
+    required int cooldownInterval,
+  }) async {
+    _checkInitialized();
+    return _client.enableSlowdown(id!, type, cooldownInterval);
+  }
+
+  /// Disable slow mode
+  Future<UpdateChannelResponse> disableSlowMode() async {
+    _checkInitialized();
+    return _client.disableSlowdown(id!, type);
+  }
+
   /// Delete this channel. Messages are permanently removed.
   Future<EmptyResponse> delete() async {
     _checkInitialized();

packages/stream_chat/lib/src/client/client.dart

@@ -1244,6 +1244,28 @@ class StreamChatClient {
         language,
       );
 
+  /// Enables slow mode
+  Future<UpdateChannelResponse> enableSlowdown(
+    String channelId,
+    String channelType,
+    int cooldown,
+  ) async =>
+      _chatApi.channel.enableSlowdown(
+        channelId,
+        channelType,
+        cooldown,
+      );
+
+  /// Disables slow mode
+  Future<UpdateChannelResponse> disableSlowdown(
+    String channelId,
+    String channelType,
+  ) async =>
+      _chatApi.channel.disableSlowdown(
+        channelId,
+        channelType,
+      );
+
   /// Pins provided message
   /// [timeoutOrExpirationDate] can either be a [DateTime] or a value in seconds
   /// to be added to [DateTime.now]

packages/stream_chat/lib/src/core/api/channel_api.dart

@@ -123,6 +123,35 @@ class ChannelApi {
     return PartialUpdateChannelResponse.fromJson(response.data);
   }
 
+  /// Enable slowdown
+  Future<UpdateChannelResponse> enableSlowdown(
+    String channelId,
+    String channelType,
+    int cooldown,
+  ) async {
+    final response = await _client.post(
+      _getChannelUrl(channelId, channelType),
+      data: {
+        'cooldown': cooldown,
+      },
+    );
+    return UpdateChannelResponse.fromJson(response.data);
+  }
+
+  /// Disable slowdown
+  Future<UpdateChannelResponse> disableSlowdown(
+    String channelId,
+    String channelType,
+  ) async {
+    final response = await _client.post(
+      _getChannelUrl(channelId, channelType),
+      data: {
+        'cooldown': 0,
+      },
+    );
+    return UpdateChannelResponse.fromJson(response.data);
+  }
+
   /// Accept invitation to the channel
   Future<AcceptInviteResponse> acceptChannelInvite(
     String channelId,

packages/stream_chat/lib/src/core/models/channel_model.dart

@@ -83,7 +83,7 @@ class ChannelModel {
   final int memberCount;
 
   /// The number of seconds in a cooldown
-  @JsonKey(includeIfNull: false)
+  @JsonKey(includeIfNull: false, defaultValue: 0)
   final int cooldown;
 
   /// Map of custom channel extraData

packages/stream_chat/lib/src/core/models/channel_model.g.dart

@@ -33,6 +33,7 @@ ChannelModel _$ChannelModelFromJson(Map<String, dynamic> json) {
     memberCount: json['member_count'] as int? ?? 0,
     extraData: json['extra_data'] as Map<String, dynamic>? ?? {},
     team: json['team'] as String?,
+    cooldown: json['cooldown'] as int? ?? 0,
   );
 }
 
@@ -57,6 +58,7 @@ Map<String, dynamic> _$ChannelModelToJson(ChannelModel instance) {
   writeNotNull('updated_at', readonly(instance.updatedAt));
   writeNotNull('deleted_at', readonly(instance.deletedAt));
   writeNotNull('member_count', readonly(instance.memberCount));
+  val['cooldown'] = instance.cooldown;
   val['extra_data'] = instance.extraData;
   writeNotNull('team', readonly(instance.team));
   return val;

packages/stream_chat/lib/src/core/models/own_user.g.dart

@@ -36,5 +36,8 @@ OwnUser _$OwnUserFromJson(Map<String, dynamic> json) {
     online: json['online'] as bool? ?? false,
     extraData: json['extra_data'] as Map<String, dynamic>? ?? {},
     banned: json['banned'] as bool? ?? false,
+    teams:
+        (json['teams'] as List<dynamic>?)?.map((e) => e as String).toList() ??
+            [],
   );
 }