Added config to update channels from messages list

Author: martinmitrevski

Sources/StreamChatSwiftUI/ChatChannel/MessageList/MessageContainerView.swift

@@ -130,7 +130,7 @@ public struct MessageContainerView<Factory: ViewFactory>: View {
                     .offset(x: self.offsetX)
                     .simultaneousGesture(
                         DragGesture(
-                            minimumDistance: 15,
+                            minimumDistance: 10,
                             coordinateSpace: .local
                         )
                         .updating($offset) { (value, gestureState, _) in

Sources/StreamChatSwiftUI/ChatChannel/MessageList/MessageListConfig.swift

@@ -18,7 +18,8 @@ public struct MessageListConfig {
         pageSize: Int = 50,
         messagePopoverEnabled: Bool = true,
         doubleTapOverlayEnabled: Bool = false,
-        becomesFirstResponderOnOpen: Bool = false
+        becomesFirstResponderOnOpen: Bool = false,
+        updateChannelsFromMessageList: Bool = false
     ) {
         self.messageListType = messageListType
         self.typingIndicatorPlacement = typingIndicatorPlacement
@@ -30,6 +31,7 @@ public struct MessageListConfig {
         self.messagePopoverEnabled = messagePopoverEnabled
         self.doubleTapOverlayEnabled = doubleTapOverlayEnabled
         self.becomesFirstResponderOnOpen = becomesFirstResponderOnOpen
+        self.updateChannelsFromMessageList = updateChannelsFromMessageList
     }
 
     let messageListType: MessageListType
@@ -42,6 +44,7 @@ public struct MessageListConfig {
     let messagePopoverEnabled: Bool
     let doubleTapOverlayEnabled: Bool
     let becomesFirstResponderOnOpen: Bool
+    let updateChannelsFromMessageList: Bool
 }
 
 /// Contains information about the message paddings.

Sources/StreamChatSwiftUI/ChatChannelList/ChatChannelListViewModel.swift

@@ -242,6 +242,7 @@ open class ChatChannelListViewModel: ObservableObject, ChatChannelListController
     private func handleChannelListChanges(_ controller: ChatChannelListController) {
         if selectedChannel != nil || !searchText.isEmpty || deeplinkChannel != nil {
             queuedChannelsChanges = controller.channels
+            updateChannelsIfNeeded()
         } else {
             channels = controller.channels
         }
@@ -363,35 +364,47 @@ open class ChatChannelListViewModel: ObservableObject, ChatChannelListController
         if !queuedChannelsChanges.isEmpty && selectedChannel == nil && deeplinkChannel == nil {
             channels = queuedChannelsChanges
         } else if !queuedChannelsChanges.isEmpty {
-            let selected = selectedChannel != nil ? selectedChannel?.channel : deeplinkChannel?.channel
-            var index: Int?
-            var temp = Array(queuedChannelsChanges)
-            for i in 0..<temp.count {
-                let current = temp[i]
-                if current.cid == selected?.cid {
-                    index = i
-                    selectedChannel?.injectedChannelInfo = InjectedChannelInfo(
-                        subtitle: current.subtitleText,
-                        unreadCount: 0,
-                        timestamp: current.timestampText,
-                        lastMessageAt: current.lastMessageAt,
-                        latestMessages: current.latestMessages
-                    )
-                    break
-                }
-            }
-            if let index = index, let selected = selected {
-                temp[index] = selected
-            }
-            markDirty = true
-            channels = LazyCachedMapCollection(source: temp, map: { $0 })
+            handleQueuedChanges()
         } else if queuedChannelsChanges.isEmpty && (selectedChannel != nil || deeplinkChannel != nil) {
             if selectedChannel?.injectedChannelInfo == nil {
                 selectedChannel?.injectedChannelInfo = InjectedChannelInfo(unreadCount: 0)
             }
         }
     }
 
+    private func updateChannelsIfNeeded() {
+        if utils.messageListConfig.updateChannelsFromMessageList {
+            DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { [weak self] in
+                self?.handleChannelAppearance()
+            }
+        }
+    }
+    
+    private func handleQueuedChanges() {
+        let selected = selectedChannel != nil ? selectedChannel?.channel : deeplinkChannel?.channel
+        var index: Int?
+        var temp = Array(queuedChannelsChanges)
+        for i in 0..<temp.count {
+            let current = temp[i]
+            if current.cid == selected?.cid {
+                index = i
+                selectedChannel?.injectedChannelInfo = InjectedChannelInfo(
+                    subtitle: current.subtitleText,
+                    unreadCount: 0,
+                    timestamp: current.timestampText,
+                    lastMessageAt: current.lastMessageAt,
+                    latestMessages: current.latestMessages
+                )
+                break
+            }
+        }
+        if let index = index, let selected = selected {
+            temp[index] = selected
+        }
+        markDirty = true
+        channels = LazyCachedMapCollection(source: temp, map: { $0 })
+    }
+    
     private func observeChannelDismiss() {
         NotificationCenter.default.addObserver(
             self,

StreamChatSwiftUITests/Tests/ChatChannelList/ChatChannelListViewModel_Tests.swift

@@ -8,6 +8,14 @@ import XCTest
 
 class ChatChannelListViewModel_Tests: StreamChatTestCase {
 
+    override open func setUp() {
+        super.setUp()
+        let utils = Utils(
+            messageListConfig: MessageListConfig(updateChannelsFromMessageList: true)
+        )
+        streamChat = StreamChat(chatClient: chatClient, utils: utils)
+    }
+    
     func test_channelListVMCreation_channelsLoaded() {
         // Given
         let channelListController = makeChannelListController()