Fix reading messages from muted users (#1063)

Author: laevandus

CHANGELOG.md

@@ -15,6 +15,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - `MentionUsersView`
   - `ParticipantInfoView`
   - `ChatThreadListItem`
+- Fix reading messages from muted users [#1063](https://github.com/GetStream/stream-chat-swiftui/pull/1063)
 
 # [4.94.0](https://github.com/GetStream/stream-chat-swiftui/releases/tag/4.94.0)
 _December 02, 2025_

Sources/StreamChatSwiftUI/ChatChannel/ChatChannelViewModel.swift

@@ -613,10 +613,11 @@ open class ChatChannelViewModel: ObservableObject, MessagesDataSource {
     }
 
     private func sendReadEventIfNeeded(for message: ChatMessage) {
-        guard let channel, channel.unreadCount.messages > 0 else {
+        guard let channel, let currentUserId = chatClient.currentUserId else { return }
+        if currentUserMarkedMessageUnread {
             return
         }
-        if currentUserMarkedMessageUnread {
+        if let read = channel.read(for: currentUserId), read.lastReadAt > message.createdAt {
             return
         }
         throttler.execute { [weak self] in

StreamChatSwiftUITests/Tests/ChatChannel/ChatChannelViewModel_Tests.swift

@@ -740,11 +740,36 @@ class ChatChannelViewModel_Tests: StreamChatTestCase {
         XCTAssertEqual(1, channelController.markReadCallCount)
     }
 
-    func test_chatChannelVM_sendReadEventIfNeeded_whenChannelHasNoUnreadMessages() {
+    func test_chatChannelVM_sendReadEventIfNeeded_whenChannelHasNoReads_thenMarkReadIsCalled() {
         // Given
         let message = ChatMessage.mock()
         let channelController = makeChannelController(messages: [message])
-        channelController.channel_mock = .mock(cid: .unique, unreadCount: ChannelUnreadCount(messages: 0, mentions: 0))
+        channelController.channel_mock = .mockDMChannel(reads: [])
+        channelController.hasLoadedAllNextMessages_mock = true
+        let viewModel = ChatChannelViewModel(channelController: channelController)
+        viewModel.currentUserMarkedMessageUnread = false
+        viewModel.throttler = Throttler_Mock(interval: 0)
+        
+        // When
+        viewModel.handleMessageAppear(index: 0, scrollDirection: .down)
+        
+        // Then
+        XCTAssertEqual(1, channelController.markReadCallCount)
+    }
+    
+    func test_chatChannelVM_sendReadEventIfNeeded_whenChannelReadHasMoreRecentTimestamp_thenMarkReadIsNotCalled() {
+        // Given
+        let message = ChatMessage.mock()
+        let channelController = makeChannelController(messages: [message])
+        channelController.channel_mock = .mockDMChannel(
+            reads: [.mock(
+                lastReadAt: .distantFuture,
+                lastReadMessageId: .unique,
+                unreadMessagesCount: 0,
+                user: .mock(id: chatClient.currentUserId ?? "")
+            )]
+        )
+        channelController.hasLoadedAllNextMessages_mock = true
         let viewModel = ChatChannelViewModel(channelController: channelController)
         viewModel.currentUserMarkedMessageUnread = false
         viewModel.throttler = Throttler_Mock(interval: 0)