Possibility to customize message grouping

Author: martinmitrevski

CHANGELOG.md

@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### ✅ Added
 - Config to change the scrolling anchor (top/bottom) on messages
+- Pass extra data in attachments
+- Custom message grouping by overriding `groupMessages` in `ChatChannelViewModel`
+
+### 🔄 Changed
+- `AddedAsset`'s `extraData` property is now of type `[String: RawJSON]`
 
 # [4.25.0](https://github.com/GetStream/stream-chat-swiftui/releases/tag/4.25.0)
 _December 16, 2022_

Sources/StreamChatSwiftUI/ChatChannel/ChatChannelViewModel.swift

@@ -1,5 +1,5 @@
 //
-// Copyright © 2022 Stream.io Inc. All rights reserved.
+// Copyright © 2023 Stream.io Inc. All rights reserved.
 //
 
 import Combine
@@ -184,6 +184,54 @@ open class ChatChannelViewModel: ObservableObject, MessagesDataSource {
         }
     }
 
+    open func groupMessages() {
+        var temp = [String: [String]]()
+        for (index, message) in messages.enumerated() {
+            let date = message.createdAt
+            temp[message.id] = []
+            if index == 0 {
+                temp[message.id] = [firstMessageKey]
+                continue
+            } else if index == messages.count - 1 {
+                temp[message.id] = [lastMessageKey]
+            }
+            
+            let previous = index - 1
+            let previousMessage = messages[previous]
+            let currentAuthorId = messageCachingUtils.authorId(for: message)
+            let previousAuthorId = messageCachingUtils.authorId(for: previousMessage)
+
+            if currentAuthorId != previousAuthorId {
+                temp[message.id]?.append(firstMessageKey)
+                var prevInfo = temp[previousMessage.id] ?? []
+                prevInfo.append(lastMessageKey)
+                temp[previousMessage.id] = prevInfo
+            }
+
+            if previousMessage.type == .error
+                || previousMessage.type == .ephemeral
+                || previousMessage.type == .system {
+                temp[message.id] = [firstMessageKey]
+                continue
+            }
+
+            let delay = previousMessage.createdAt.timeIntervalSince(date)
+
+            if delay > utils.messageListConfig.maxTimeIntervalBetweenMessagesInGroup {
+                temp[message.id]?.append(firstMessageKey)
+                var prevInfo = temp[previousMessage.id] ?? []
+                prevInfo.append(lastMessageKey)
+                temp[previousMessage.id] = prevInfo
+            }
+            
+            if temp[message.id]?.isEmpty == true {
+                temp[message.id] = nil
+            }
+        }
+        
+        messagesGroupingInfo = temp
+    }
+    
     func dataSource(
         channelDataSource: ChannelDataSource,
         didUpdateMessages messages: LazyCachedMapCollection<ChatMessage>,
@@ -369,54 +417,6 @@ open class ChatChannelViewModel: ObservableObject, MessagesDataSource {
         }
     }
 
-    private func groupMessages() {
-        var temp = [String: [String]]()
-        for (index, message) in messages.enumerated() {
-            let date = message.createdAt
-            temp[message.id] = []
-            if index == 0 {
-                temp[message.id] = [firstMessageKey]
-                continue
-            } else if index == messages.count - 1 {
-                temp[message.id] = [lastMessageKey]
-            }
-            
-            let previous = index - 1
-            let previousMessage = messages[previous]
-            let currentAuthorId = messageCachingUtils.authorId(for: message)
-            let previousAuthorId = messageCachingUtils.authorId(for: previousMessage)
-
-            if currentAuthorId != previousAuthorId {
-                temp[message.id]?.append(firstMessageKey)
-                var prevInfo = temp[previousMessage.id] ?? []
-                prevInfo.append(lastMessageKey)
-                temp[previousMessage.id] = prevInfo
-            }
-
-            if previousMessage.type == .error
-                || previousMessage.type == .ephemeral
-                || previousMessage.type == .system {
-                temp[message.id] = [firstMessageKey]
-                continue
-            }
-
-            let delay = previousMessage.createdAt.timeIntervalSince(date)
-
-            if delay > utils.messageListConfig.maxTimeIntervalBetweenMessagesInGroup {
-                temp[message.id]?.append(firstMessageKey)
-                var prevInfo = temp[previousMessage.id] ?? []
-                prevInfo.append(lastMessageKey)
-                temp[previousMessage.id] = prevInfo
-            }
-            
-            if temp[message.id]?.isEmpty == true {
-                temp[message.id] = nil
-            }
-        }
-        
-        messagesGroupingInfo = temp
-    }
-    
     private func handleDateChange() {
         guard showScrollToLatestButton == true, let currentDate = currentDate else {
             currentDateString = nil