Merge pull request #231 from GetStream/add-merge-function

[Message, ChannelModel] Add merge helper functions for easier data manipulation

packages/dart_client/lib/src/api/channel.dart

@@ -1108,30 +1108,7 @@ class ChannelClientState {
 
       final oldIndex = newMessages.indexWhere((m) => m.id == message.id);
       if (oldIndex != -1) {
-        newMessages[oldIndex] = newMessages[oldIndex].copyWith(
+        newMessages[oldIndex] = newMessages[oldIndex].merge(message);
-          text: message.text,
-          type: message.type,
-          attachments: message.attachments,
-          mentionedUsers: message.mentionedUsers,
-          reactionCounts: message.reactionCounts,
-          reactionScores: message.reactionScores,
-          latestReactions: message.latestReactions,
-          ownReactions: message.ownReactions,
-          parentId: message.parentId,
-          quotedMessageId: message.quotedMessageId,
-          quotedMessage: message.quotedMessage,
-          replyCount: message.replyCount,
-          showInChannel: message.showInChannel,
-          command: message.command,
-          silent: message.silent,
-          createdAt: message.createdAt,
-          updatedAt: message.updatedAt,
-          deletedAt: message.deletedAt,
-          user: message.user,
-          status: message.status,
-          threadParticipants: message.threadParticipants,
-          extraData: message.extraData,
-        );
       } else {
         newMessages.add(message);
       }
@@ -1395,20 +1372,7 @@ class ChannelClientState {
 
     _channelState = _channelState.copyWith(
       messages: newMessages,
-      channel: _channelState.channel?.copyWith(
+      channel: _channelState.channel?.merge(updatedState.channel),
-        lastMessageAt: updatedState.channel?.lastMessageAt,
-        createdAt: updatedState.channel?.createdAt,
-        type: updatedState.channel?.type,
-        extraData: updatedState.channel?.extraData,
-        updatedAt: updatedState.channel?.updatedAt,
-        id: updatedState.channel?.id,
-        createdBy: updatedState.channel?.createdBy,
-        config: updatedState.channel?.config,
-        deletedAt: updatedState.channel?.deletedAt,
-        cid: updatedState.channel?.cid,
-        frozen: updatedState.channel?.frozen,
-        memberCount: updatedState.channel?.memberCount,
-      ),
       watchers: newWatchers,
       watcherCount: updatedState.watcherCount,
       members: newMembers,

packages/dart_client/lib/src/models/channel_model.dart

@@ -142,4 +142,25 @@ class ChannelModel {
         extraData: extraData ?? this.extraData,
         team: team ?? this.team,
       );
+
+  /// Returns a new [ChannelModel] that is a combination of this channelModel and the given
+  /// [other] channelModel.
+  ChannelModel merge(ChannelModel other) {
+    if (other == null) return this;
+    return copyWith(
+      id: other.id,
+      type: other.type,
+      cid: other.cid,
+      config: other.config,
+      createdBy: other.createdBy,
+      frozen: other.frozen,
+      lastMessageAt: other.lastMessageAt,
+      createdAt: other.createdAt,
+      updatedAt: other.updatedAt,
+      deletedAt: other.deletedAt,
+      memberCount: other.memberCount,
+      extraData: other.extraData,
+      team: other.team,
+    );
+  }
 }

packages/dart_client/lib/src/models/message.dart

@@ -250,6 +250,38 @@ class Message {
         deletedAt: deletedAt ?? this.deletedAt,
         status: status ?? this.status,
       );
+
+  /// Returns a new [Message] that is a combination of this message and the given
+  /// [other] message.
+  Message merge(Message other) {
+    if (other == null) return this;
+    return copyWith(
+      id: other.id,
+      text: other.text,
+      type: other.type,
+      attachments: other.attachments,
+      mentionedUsers: other.mentionedUsers,
+      reactionCounts: other.reactionCounts,
+      reactionScores: other.reactionScores,
+      latestReactions: other.latestReactions,
+      ownReactions: other.ownReactions,
+      parentId: other.parentId,
+      quotedMessage: other.quotedMessage,
+      quotedMessageId: other.quotedMessageId,
+      replyCount: other.replyCount,
+      threadParticipants: other.threadParticipants,
+      showInChannel: other.showInChannel,
+      command: other.command,
+      createdAt: other.createdAt,
+      silent: other.silent,
+      extraData: other.extraData,
+      user: other.user,
+      shadowed: other.shadowed,
+      updatedAt: other.updatedAt,
+      deletedAt: other.deletedAt,
+      status: other.status,
+    );
+  }
 }
 
 /// A translated message