Merge branch 'master' into remote-desktop

apps/ios/Shared/AppDelegate.swift

@@ -55,7 +55,6 @@ class AppDelegate: NSObject, UIApplicationDelegate {
                      didReceiveRemoteNotification userInfo: [AnyHashable : Any],
                      fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
         logger.debug("AppDelegate: didReceiveRemoteNotification")
-        print("*** userInfo", userInfo)
         let m = ChatModel.shared
         if let ntfData = userInfo["notificationData"] as? [AnyHashable : Any],
            m.notificationMode != .off {

apps/ios/Shared/Model/ChatModel.swift

@@ -64,7 +64,7 @@ final class ChatModel: ObservableObject {
     @Published var reversedChatItems: [ChatItem] = []
     var chatItemStatuses: Dictionary<Int64, CIStatus> = [:]
     @Published var chatToTop: String?
-    @Published var groupMembers: [GroupMember] = []
+    @Published var groupMembers: [GMember] = []
     // items in the terminal view
     @Published var showingTerminal = false
     @Published var terminalItems: [TerminalItem] = []
@@ -163,6 +163,10 @@ final class ChatModel: ObservableObject {
         }
     }
 
+    func getGroupMember(_ groupMemberId: Int64) -> GMember? {
+        groupMembers.first { $0.groupMemberId == groupMemberId }
+    }
+
     private func getChatIndex(_ id: String) -> Int? {
         chats.firstIndex(where: { $0.id == id })
     }
@@ -176,6 +180,7 @@ final class ChatModel: ObservableObject {
     func updateChatInfo(_ cInfo: ChatInfo) {
         if let i = getChatIndex(cInfo.id) {
             chats[i].chatInfo = cInfo
+            chats[i].created = Date.now
         }
     }
 
@@ -339,7 +344,7 @@ final class ChatModel: ObservableObject {
         reversedChatItems[i].viewTimestamp = .now
     }
 
-    private func getChatItemIndex(_ cItem: ChatItem) -> Int? {
+    func getChatItemIndex(_ cItem: ChatItem) -> Int? {
         reversedChatItems.firstIndex(where: { $0.id == cItem.id })
     }
 
@@ -528,27 +533,62 @@ final class ChatModel: ObservableObject {
             users.filter { !$0.user.activeUser }.reduce(0, { unread, next -> Int in unread + next.unreadCount })
     }
 
-    func getConnectedMemberNames(_ ci: ChatItem) -> [String] {
-        guard var i = getChatItemIndex(ci) else { return [] }
+    // this function analyses "connected" events and assumes that each member will be there only once
+    func getConnectedMemberNames(_ chatItem: ChatItem) -> (Int, [String]) {
+        var count = 0
         var ns: [String] = []
-        while i < reversedChatItems.count, let m = reversedChatItems[i].memberConnected {
-            ns.append(m.displayName)
-            i += 1
+        if let ciCategory = chatItem.mergeCategory,
+           var i = getChatItemIndex(chatItem) {
+            while i < reversedChatItems.count {
+                let ci = reversedChatItems[i]
+                if ci.mergeCategory != ciCategory { break }
+                if let m = ci.memberConnected {
+                    ns.append(m.displayName)
+                }
+                count += 1
+                i += 1
+            }
         }
-        return ns
+        return (count, ns)
     }
 
-    func getChatItemNeighbors(_ ci: ChatItem) -> (ChatItem?, ChatItem?) {
-        if let i = getChatItemIndex(ci)  {
-            return (
-                i + 1 < reversedChatItems.count ? reversedChatItems[i + 1] : nil,
-                i - 1 >= 0 ? reversedChatItems[i - 1] : nil
-            )
+    // returns the index of the passed item and the next item (it has smaller index)
+    func getNextChatItem(_ ci: ChatItem) -> (Int?, ChatItem?) {
+        if let i = getChatItemIndex(ci) {
+            (i, i > 0 ? reversedChatItems[i - 1] : nil)
         } else {
-            return (nil, nil)
+            (nil, nil)
         }
     }
 
+    // returns the index of the first item in the same merged group (the first hidden item)
+    // and the previous visible item with another merge category
+    func getPrevShownChatItem(_ ciIndex: Int?, _ ciCategory: CIMergeCategory?) -> (Int?, ChatItem?) {
+        guard var i = ciIndex else { return (nil, nil) }
+        let fst = reversedChatItems.count - 1
+        while i < fst {
+            i = i + 1
+            let ci = reversedChatItems[i]
+            if ciCategory == nil || ciCategory != ci.mergeCategory {
+                return (i - 1, ci)
+            }
+        }
+        return (i, nil)
+    }
+
+    // returns the previous member in the same merge group and the count of members in this group
+    func getPrevHiddenMember(_ member: GroupMember, _ range: ClosedRange<Int>) -> (GroupMember?, Int) {
+        var prevMember: GroupMember? = nil
+        var memberIds: Set<Int64> = []
+        for i in range {
+            if case let .groupRcv(m) = reversedChatItems[i].chatDir {
+                if prevMember == nil && m.groupMemberId != member.groupMemberId { prevMember = m }
+                memberIds.insert(m.groupMemberId)
+            }
+        }
+        return (prevMember, memberIds.count)
+    }
+
     func popChat(_ id: String) {
         if let i = getChatIndex(id) {
             popChat_(i)
@@ -583,13 +623,14 @@ final class ChatModel: ObservableObject {
         }
         // update current chat
         if chatId == groupInfo.id {
-            if let i = groupMembers.firstIndex(where: { $0.id == member.id }) {
+            if let i = groupMembers.firstIndex(where: { $0.groupMemberId == member.groupMemberId }) {
                 withAnimation(.default) {
-                    self.groupMembers[i] = member
+                    self.groupMembers[i].wrapped = member
+                    self.groupMembers[i].created = Date.now
                 }
                 return false
             } else {
-                withAnimation { groupMembers.append(member) }
+                withAnimation { groupMembers.append(GMember(member)) }
                 return true
             }
         } else {
@@ -598,11 +639,10 @@ final class ChatModel: ObservableObject {
     }
 
     func updateGroupMemberConnectionStats(_ groupInfo: GroupInfo, _ member: GroupMember, _ connectionStats: ConnectionStats) {
-        if let conn = member.activeConn {
-            var updatedConn = conn
-            updatedConn.connectionStats = connectionStats
+        if var conn = member.activeConn {
+            conn.connectionStats = connectionStats
             var updatedMember = member
-            updatedMember.activeConn = updatedConn
+            updatedMember.activeConn = conn
             _ = upsertGroupMember(groupInfo, updatedMember)
         }
     }
@@ -700,3 +740,19 @@ final class Chat: ObservableObject, Identifiable {
 
     public static var sampleData: Chat = Chat(chatInfo: ChatInfo.sampleData.direct, chatItems: [])
 }
+
+final class GMember: ObservableObject, Identifiable {
+    @Published var wrapped: GroupMember
+    var created = Date.now
+
+    init(_ member: GroupMember) {
+        self.wrapped = member
+    }
+
+    var id: String { wrapped.id }
+    var groupId: Int64 { wrapped.groupId }
+    var groupMemberId: Int64 { wrapped.groupMemberId }
+    var displayName: String { wrapped.displayName }
+    var viewId: String { get { "\(wrapped.id) \(created.timeIntervalSince1970)" } }
+    static let sampleData = GMember(GroupMember.sampleData)
+}

apps/ios/Shared/Model/SimpleXAPI.swift

@@ -502,6 +502,10 @@ func apiSetChatSettings(type: ChatType, id: Int64, chatSettings: ChatSettings) a
     try await sendCommandOkResp(.apiSetChatSettings(type: type, id: id, chatSettings: chatSettings))
 }
 
+func apiSetMemberSettings(_ groupId: Int64, _ groupMemberId: Int64, _ memberSettings: GroupMemberSettings) async throws {
+    try await sendCommandOkResp(.apiSetMemberSettings(groupId: groupId, groupMemberId: groupMemberId, memberSettings: memberSettings))
+}
+
 func apiContactInfo(_ contactId: Int64) async throws -> (ConnectionStats?, Profile?) {
     let r = await chatSendCmd(.apiContactInfo(contactId: contactId))
     if case let .contactInfo(_, _, connStats, customUserProfile) = r { return (connStats, customUserProfile) }
@@ -1111,8 +1115,8 @@ func apiListMembers(_ groupId: Int64) async -> [GroupMember] {
     return []
 }
 
-func filterMembersToAdd(_ ms: [GroupMember]) -> [Contact] {
-    let memberContactIds = ms.compactMap{ m in m.memberCurrent ? m.memberContactId : nil }
+func filterMembersToAdd(_ ms: [GMember]) -> [Contact] {
+    let memberContactIds = ms.compactMap{ m in m.wrapped.memberCurrent ? m.wrapped.memberContactId : nil }
     return ChatModel.shared.chats
         .compactMap{ $0.chatInfo.contact }
         .filter{ !memberContactIds.contains($0.apiId) }
@@ -1394,6 +1398,12 @@ func processReceivedMsg(_ res: ChatResponse) async {
                 m.updateChatInfo(cInfo)
             }
         }
+    case let .groupMemberUpdated(user, groupInfo, _, toMember):
+        if active(user) {
+            await MainActor.run {
+                _ = m.upsertGroupMember(groupInfo, toMember)
+            }
+        }
     case let .contactsMerged(user, intoContact, mergedContact):
         if active(user) && m.hasChat(mergedContact.id) {
             await MainActor.run {
@@ -1507,6 +1517,16 @@ func processReceivedMsg(_ res: ChatResponse) async {
                 m.removeChat(hostContact.activeConn.id)
             }
         }
+    case let .groupLinkConnecting(user, groupInfo, hostMember):
+        if !active(user) { return }
+        
+        await MainActor.run {
+            m.updateGroup(groupInfo)
+            if let hostConn = hostMember.activeConn {
+                m.dismissConnReqView(hostConn.id)
+                m.removeChat(hostConn.id)
+            }
+        }
     case let .joinedGroupMemberConnecting(user, groupInfo, _, member):
         if active(user) {
             await MainActor.run {
@@ -1566,10 +1586,11 @@ func processReceivedMsg(_ res: ChatResponse) async {
                 m.updateGroup(toGroup)
             }
         }
-    case let .memberRole(user, groupInfo, _, _, _, _):
+    case let .memberRole(user, groupInfo, byMember: _, member: member, fromRole: _, toRole: _):
         if active(user) {
             await MainActor.run {
                 m.updateGroup(groupInfo)
+                _ = m.upsertGroupMember(groupInfo, member)
             }
         }
     case let .newMemberContactReceivedInv(user, contact, _, _):

apps/ios/Shared/Views/Call/CallController.swift

@@ -108,7 +108,6 @@ class CallController: NSObject, CXProviderDelegate, PKPushRegistryDelegate, Obse
             try audioSession.setActive(true)
             logger.debug("audioSession activated")
         } catch {
-            print(error)
             logger.error("failed activating audio session")
         }
     }
@@ -121,7 +120,6 @@ class CallController: NSObject, CXProviderDelegate, PKPushRegistryDelegate, Obse
             try audioSession.setActive(false)
             logger.debug("audioSession deactivated")
         } catch {
-            print(error)
             logger.error("failed deactivating audio session")
         }
         suspendOnEndCall()

apps/ios/Shared/Views/Chat/ChatItem/CICallItemView.swift

@@ -11,7 +11,7 @@ import SimpleXChat
 
 struct CICallItemView: View {
     @EnvironmentObject var m: ChatModel
-    var chatInfo: ChatInfo
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
     var status: CICallStatus
     var duration: Int
@@ -60,7 +60,7 @@ struct CICallItemView: View {
 
 
     @ViewBuilder private func acceptCallButton() -> some View {
-        if case let .direct(contact) = chatInfo {
+        if case let .direct(contact) = chat.chatInfo {
             Button {
                 if let invitation = m.callInvitations[contact.id] {
                     CallController.shared.answerCall(invitation: invitation)

apps/ios/Shared/Views/Chat/ChatItem/CIChatFeatureView.swift

@@ -10,20 +10,92 @@ import SwiftUI
 import SimpleXChat
 
 struct CIChatFeatureView: View {
+    @EnvironmentObject var m: ChatModel
     var chatItem: ChatItem
+    @Binding var revealed: Bool
     var feature: Feature
     var icon: String? = nil
     var iconColor: Color
 
     var body: some View {
+        if !revealed, let fs = mergedFeautures() {
+            HStack {
+                ForEach(fs, content: featureIconView)
+            }
+            .padding(.horizontal, 6)
+            .padding(.vertical, 6)
+        } else {
+            fullFeatureView
+        }
+    }
+
+    private struct FeatureInfo: Identifiable {
+        var icon: String
+        var scale: CGFloat
+        var color: Color
+        var param: String?
+
+        init(_ f: Feature, _ color: Color, _ param: Int?) {
+            self.icon = f.iconFilled
+            self.scale = f.iconScale
+            self.color = color
+            self.param = f.hasParam && param != nil ? timeText(param) : nil
+        }
+
+        var id: String {
+            "\(icon) \(color) \(param ?? "")"
+        }
+    }
+
+    private func mergedFeautures() -> [FeatureInfo]? {
+        var fs: [FeatureInfo] = []
+        var icons: Set<String> = []
+        if var i = m.getChatItemIndex(chatItem) {
+            while i < m.reversedChatItems.count,
+                  let f = featureInfo(m.reversedChatItems[i]) {
+                if !icons.contains(f.icon) {
+                    fs.insert(f, at: 0)
+                    icons.insert(f.icon)
+                }
+                i += 1
+            }
+        }
+        return fs.count > 1 ? fs : nil
+    }
+
+    private func featureInfo(_ ci: ChatItem) -> FeatureInfo? {
+        switch ci.content {
+        case let .rcvChatFeature(feature, enabled, param): FeatureInfo(feature, enabled.iconColor, param)
+        case let .sndChatFeature(feature, enabled, param): FeatureInfo(feature, enabled.iconColor, param)
+        case let .rcvGroupFeature(feature, preference, param): FeatureInfo(feature, preference.enable.iconColor, param)
+        case let .sndGroupFeature(feature, preference, param): FeatureInfo(feature, preference.enable.iconColor, param)
+        default: nil
+        }
+    }
+
+    @ViewBuilder private func featureIconView(_ f: FeatureInfo) -> some View {
+        let i = Image(systemName: f.icon)
+            .foregroundColor(f.color)
+            .scaleEffect(f.scale)
+        if let param = f.param {
+            HStack {
+                i
+                chatEventText(Text(param)).lineLimit(1)
+            }
+        } else {
+            i
+        }
+    }
+
+    private var fullFeatureView: some View {
         HStack(alignment: .bottom, spacing: 4) {
             Image(systemName: icon ?? feature.iconFilled)
                 .foregroundColor(iconColor)
                 .scaleEffect(feature.iconScale)
             chatEventText(chatItem)
         }
-        .padding(.leading, 6)
-        .padding(.bottom, 6)
+        .padding(.horizontal, 6)
+        .padding(.vertical, 4)
         .textSelection(.disabled)
     }
 }
@@ -31,6 +103,6 @@ struct CIChatFeatureView: View {
 struct CIChatFeatureView_Previews: PreviewProvider {
     static var previews: some View {
         let enabled = FeatureEnabled(forUser: false, forContact: false)
-        CIChatFeatureView(chatItem: ChatItem.getChatFeatureSample(.fullDelete, enabled), feature: ChatFeature.fullDelete, iconColor: enabled.iconColor)
+        CIChatFeatureView(chatItem: ChatItem.getChatFeatureSample(.fullDelete, enabled), revealed: Binding.constant(true), feature: ChatFeature.fullDelete, iconColor: enabled.iconColor)
     }
 }

apps/ios/Shared/Views/Chat/ChatItem/CIEventView.swift

@@ -13,11 +13,9 @@ struct CIEventView: View {
     var eventText: Text
 
     var body: some View {
-        HStack(alignment: .bottom, spacing: 0) {
-            eventText
-        }
-        .padding(.leading, 6)
-        .padding(.bottom, 6)
+        eventText
+        .padding(.horizontal, 6)
+        .padding(.vertical, 4)
         .textSelection(.disabled)
     }
 }

apps/ios/Shared/Views/Chat/ChatItem/CIFeaturePreferenceView.swift

@@ -10,7 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct CIFeaturePreferenceView: View {
-    @EnvironmentObject var chat: Chat
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
     var feature: ChatFeature
     var allowed: FeatureAllowed
@@ -80,7 +80,6 @@ struct CIFeaturePreferenceView_Previews: PreviewProvider {
             quotedItem: nil,
             file: nil
         )
-        CIFeaturePreferenceView(chatItem: chatItem, feature: ChatFeature.timedMessages, allowed: .yes, param: 30)
-            .environmentObject(Chat.sampleData)
+        CIFeaturePreferenceView(chat: Chat.sampleData, chatItem: chatItem, feature: ChatFeature.timedMessages, allowed: .yes, param: 30)
     }
 }

apps/ios/Shared/Views/Chat/ChatItem/CIFileView.swift

@@ -10,6 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct CIFileView: View {
+    @EnvironmentObject var m: ChatModel
     @Environment(\.colorScheme) var colorScheme
     let file: CIFile?
     let edited: Bool
@@ -83,7 +84,7 @@ struct CIFileView: View {
                 if fileSizeValid() {
                     Task {
                         logger.debug("CIFileView fileAction - in .rcvInvitation, in Task")
-                        if let user = ChatModel.shared.currentUser {
+                        if let user = m.currentUser {
                             let encrypted = privacyEncryptLocalFilesGroupDefault.get()
                             await receiveFile(user: user, fileId: file.fileId, encrypted: encrypted)
                         }
@@ -234,18 +235,17 @@ struct CIFileView_Previews: PreviewProvider {
             file: nil
         )
         Group {
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: sentFile, revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getFileMsgContentSample(), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getFileMsgContentSample(fileName: "some_long_file_name_here", fileStatus: .rcvInvitation), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getFileMsgContentSample(fileStatus: .rcvAccepted), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getFileMsgContentSample(fileStatus: .rcvTransfer(rcvProgress: 7, rcvTotal: 10)), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getFileMsgContentSample(fileStatus: .rcvCancelled), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getFileMsgContentSample(fileSize: 1_000_000_000, fileStatus: .rcvInvitation), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getFileMsgContentSample(text: "Hello there", fileStatus: .rcvInvitation), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getFileMsgContentSample(text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.", fileStatus: .rcvInvitation), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: fileChatItemWtFile, revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: sentFile, revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getFileMsgContentSample(), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getFileMsgContentSample(fileName: "some_long_file_name_here", fileStatus: .rcvInvitation), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getFileMsgContentSample(fileStatus: .rcvAccepted), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getFileMsgContentSample(fileStatus: .rcvTransfer(rcvProgress: 7, rcvTotal: 10)), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getFileMsgContentSample(fileStatus: .rcvCancelled), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getFileMsgContentSample(fileSize: 1_000_000_000, fileStatus: .rcvInvitation), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getFileMsgContentSample(text: "Hello there", fileStatus: .rcvInvitation), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getFileMsgContentSample(text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.", fileStatus: .rcvInvitation), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: fileChatItemWtFile, revealed: Binding.constant(false))
         }
         .previewLayout(.fixed(width: 360, height: 360))
-        .environmentObject(Chat.sampleData)
     }
 }

apps/ios/Shared/Views/Chat/ChatItem/CIImageView.swift

@@ -10,6 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct CIImageView: View {
+    @EnvironmentObject var m: ChatModel
     @Environment(\.colorScheme) var colorScheme
     let chatItem: ChatItem
     let image: String
@@ -36,7 +37,7 @@ struct CIImageView: View {
                             switch file.fileStatus {
                             case .rcvInvitation:
                                 Task {
-                                    if let user = ChatModel.shared.currentUser {
+                                    if let user = m.currentUser {
                                         await receiveFile(user: user, fileId: file.fileId, encrypted: chatItem.encryptLocalFile)
                                     }
                                 }

apps/ios/Shared/Views/Chat/ChatItem/CIMemberCreatedContactView.swift

@@ -10,6 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct CIMemberCreatedContactView: View {
+    @EnvironmentObject var m: ChatModel
     var chatItem: ChatItem
     
     var body: some View {
@@ -21,7 +22,7 @@ struct CIMemberCreatedContactView: View {
                         .onTapGesture {
                             dismissAllSheets(animated: true)
                             DispatchQueue.main.async {
-                                ChatModel.shared.chatId = "@\(contactId)"
+                                m.chatId = "@\(contactId)"
                             }
                         }
                 } else {

apps/ios/Shared/Views/Chat/ChatItem/CIMetaView.swift

@@ -10,7 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct CIMetaView: View {
-    @EnvironmentObject var chat: Chat
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
     var metaColor = Color.secondary
     var paleMetaColor = Color(UIColor.tertiaryLabel)
@@ -95,15 +95,14 @@ private func statusIconText(_ icon: String, _ color: Color) -> Text {
 struct CIMetaView_Previews: PreviewProvider {
     static var previews: some View {
         Group {
-            CIMetaView(chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndSent(sndProgress: .complete)))
-            CIMetaView(chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndSent(sndProgress: .partial)))
-            CIMetaView(chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndRcvd(msgRcptStatus: .ok, sndProgress: .complete)))
-            CIMetaView(chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndRcvd(msgRcptStatus: .ok, sndProgress: .partial)))
-            CIMetaView(chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndRcvd(msgRcptStatus: .badMsgHash, sndProgress: .complete)))
-            CIMetaView(chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndSent(sndProgress: .complete), itemEdited: true))
-            CIMetaView(chatItem: ChatItem.getDeletedContentSample())
+            CIMetaView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndSent(sndProgress: .complete)))
+            CIMetaView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndSent(sndProgress: .partial)))
+            CIMetaView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndRcvd(msgRcptStatus: .ok, sndProgress: .complete)))
+            CIMetaView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndRcvd(msgRcptStatus: .ok, sndProgress: .partial)))
+            CIMetaView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndRcvd(msgRcptStatus: .badMsgHash, sndProgress: .complete)))
+            CIMetaView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directSnd, .now, "https://simplex.chat", .sndSent(sndProgress: .complete), itemEdited: true))
+            CIMetaView(chat: Chat.sampleData, chatItem: ChatItem.getDeletedContentSample())
         }
         .previewLayout(.fixed(width: 360, height: 100))
-        .environmentObject(Chat.sampleData)
     }
 }

apps/ios/Shared/Views/Chat/ChatItem/CIRcvDecryptionError.swift

@@ -12,7 +12,8 @@ import SimpleXChat
 let decryptErrorReason: LocalizedStringKey = "It can happen when you or your connection used the old database backup."
 
 struct CIRcvDecryptionError: View {
-    @EnvironmentObject var chat: Chat
+    @EnvironmentObject var m: ChatModel
+    @ObservedObject var chat: Chat
     var msgDecryptError: MsgDecryptError
     var msgCount: UInt32
     var chatItem: ChatItem
@@ -45,7 +46,7 @@ struct CIRcvDecryptionError: View {
                     do {
                         let (member, stats) = try apiGroupMemberInfo(groupInfo.apiId, groupMember.groupMemberId)
                         if let s = stats {
-                            ChatModel.shared.updateGroupMemberConnectionStats(groupInfo, member, s)
+                            m.updateGroupMemberConnectionStats(groupInfo, member, s)
                         }
                     } catch let error {
                         logger.error("apiGroupMemberInfo error: \(responseError(error))")
@@ -79,8 +80,8 @@ struct CIRcvDecryptionError: View {
             }
         } else if case let .group(groupInfo) = chat.chatInfo,
                   case let .groupRcv(groupMember) = chatItem.chatDir,
-                  let modelMember = ChatModel.shared.groupMembers.first(where: { $0.id == groupMember.id }),
-                  let memberStats = modelMember.activeConn?.connectionStats {
+                  let mem = m.getGroupMember(groupMember.groupMemberId),
+                  let memberStats = mem.wrapped.activeConn?.connectionStats {
             if memberStats.ratchetSyncAllowed {
                 decryptionErrorItemFixButton(syncSupported: true) {
                     alert = .syncAllowedAlert { syncMemberConnection(groupInfo, groupMember) }
@@ -122,7 +123,7 @@ struct CIRcvDecryptionError: View {
                 )
             }
             .padding(.horizontal, 12)
-            CIMetaView(chatItem: chatItem)
+            CIMetaView(chat: chat, chatItem: chatItem)
                 .padding(.horizontal, 12)
         }
         .onTapGesture(perform: { onClick() })
@@ -142,7 +143,7 @@ struct CIRcvDecryptionError: View {
                 + ciMetaText(chatItem.meta, chatTTL: nil, encrypted: nil, transparent: true)
             }
             .padding(.horizontal, 12)
-            CIMetaView(chatItem: chatItem)
+            CIMetaView(chat: chat, chatItem: chatItem)
                 .padding(.horizontal, 12)
         }
         .onTapGesture(perform: { onClick() })
@@ -173,7 +174,7 @@ struct CIRcvDecryptionError: View {
             do {
                 let (mem, stats) = try apiSyncGroupMemberRatchet(groupInfo.apiId, member.groupMemberId, false)
                 await MainActor.run {
-                    ChatModel.shared.updateGroupMemberConnectionStats(groupInfo, mem, stats)
+                    m.updateGroupMemberConnectionStats(groupInfo, mem, stats)
                 }
             } catch let error {
                 logger.error("syncMemberConnection apiSyncGroupMemberRatchet error: \(responseError(error))")
@@ -190,7 +191,7 @@ struct CIRcvDecryptionError: View {
             do {
                 let stats = try apiSyncContactRatchet(contact.apiId, false)
                 await MainActor.run {
-                    ChatModel.shared.updateContactConnectionStats(contact, stats)
+                    m.updateContactConnectionStats(contact, stats)
                 }
             } catch let error {
                 logger.error("syncContactConnection apiSyncContactRatchet error: \(responseError(error))")

apps/ios/Shared/Views/Chat/ChatItem/CIVideoView.swift

@@ -11,6 +11,7 @@ import AVKit
 import SimpleXChat
 
 struct CIVideoView: View {
+    @EnvironmentObject var m: ChatModel
     @Environment(\.colorScheme) var colorScheme
     private let chatItem: ChatItem
     private let image: String
@@ -101,7 +102,7 @@ struct CIVideoView: View {
                 let canBePlayed = !chatItem.chatDir.sent || file.fileStatus == CIFileStatus.sndComplete
                 VideoPlayerView(player: player, url: url, showControls: false)
                 .frame(width: w, height: w * preview.size.height / preview.size.width)
-                .onChange(of: ChatModel.shared.stopPreviousRecPlay) { playingUrl in
+                .onChange(of: m.stopPreviousRecPlay) { playingUrl in
                     if playingUrl != url {
                         player.pause()
                         videoPlaying = false
@@ -124,7 +125,7 @@ struct CIVideoView: View {
                 }
                 if !videoPlaying {
                     Button {
-                        ChatModel.shared.stopPreviousRecPlay = url
+                        m.stopPreviousRecPlay = url
                         player.play()
                     } label: {
                         playPauseIcon(canBePlayed ? "play.fill" : "play.slash")
@@ -256,7 +257,7 @@ struct CIVideoView: View {
     // TODO encrypt: where file size is checked?
     private func receiveFileIfValidSize(file: CIFile, encrypted: Bool, receiveFile: @escaping (User, Int64, Bool, Bool) async -> Void) {
         Task {
-            if let user = ChatModel.shared.currentUser {
+            if let user = m.currentUser {
                 await receiveFile(user, file.fileId, encrypted, false)
             }
         }
@@ -290,7 +291,7 @@ struct CIVideoView: View {
             )
             .onAppear {
                 DispatchQueue.main.asyncAfter(deadline: .now()) {
-                    ChatModel.shared.stopPreviousRecPlay = url
+                    m.stopPreviousRecPlay = url
                     if let player = fullPlayer {
                         player.play()
                         fullScreenTimeObserver = NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: player.currentItem, queue: .main) { _ in

apps/ios/Shared/Views/Chat/ChatItem/CIVoiceView.swift

@@ -10,6 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct CIVoiceView: View {
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
     let recordingFile: CIFile?
     let duration: Int
@@ -91,7 +92,7 @@ struct CIVoiceView: View {
     }
 
     private func metaView() -> some View {
-        CIMetaView(chatItem: chatItem)
+        CIMetaView(chat: chat, chatItem: chatItem)
     }
 }
 
@@ -219,7 +220,7 @@ struct VoiceMessagePlayer: View {
     private func downloadButton(_ recordingFile: CIFile) -> some View {
         Button {
             Task {
-                if let user = ChatModel.shared.currentUser {
+                if let user = chatModel.currentUser {
                     await receiveFile(user: user, fileId: recordingFile.fileId, encrypted: privacyEncryptLocalFilesGroupDefault.get())
                 }
             }
@@ -284,6 +285,7 @@ struct CIVoiceView_Previews: PreviewProvider {
         )
         Group {
             CIVoiceView(
+                chat: Chat.sampleData,
                 chatItem: ChatItem.getVoiceMsgContentSample(),
                 recordingFile: CIFile.getSample(fileName: "voice.m4a", fileSize: 65536, fileStatus: .rcvComplete),
                 duration: 30,
@@ -292,12 +294,11 @@ struct CIVoiceView_Previews: PreviewProvider {
                 playbackTime: .constant(TimeInterval(20)),
                 allowMenu: Binding.constant(true)
             )
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: sentVoiceMessage, revealed: Binding.constant(false), allowMenu: .constant(true), playbackState: .constant(.noPlayback), playbackTime: .constant(nil))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getVoiceMsgContentSample(), revealed: Binding.constant(false), allowMenu: .constant(true), playbackState: .constant(.noPlayback), playbackTime: .constant(nil))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getVoiceMsgContentSample(fileStatus: .rcvTransfer(rcvProgress: 7, rcvTotal: 10)), revealed: Binding.constant(false), allowMenu: .constant(true), playbackState: .constant(.noPlayback), playbackTime: .constant(nil))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: voiceMessageWtFile, revealed: Binding.constant(false), allowMenu: .constant(true), playbackState: .constant(.noPlayback), playbackTime: .constant(nil))
+            ChatItemView(chat: Chat.sampleData, chatItem: sentVoiceMessage, revealed: Binding.constant(false), allowMenu: .constant(true), playbackState: .constant(.noPlayback), playbackTime: .constant(nil))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getVoiceMsgContentSample(), revealed: Binding.constant(false), allowMenu: .constant(true), playbackState: .constant(.noPlayback), playbackTime: .constant(nil))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getVoiceMsgContentSample(fileStatus: .rcvTransfer(rcvProgress: 7, rcvTotal: 10)), revealed: Binding.constant(false), allowMenu: .constant(true), playbackState: .constant(.noPlayback), playbackTime: .constant(nil))
+            ChatItemView(chat: Chat.sampleData, chatItem: voiceMessageWtFile, revealed: Binding.constant(false), allowMenu: .constant(true), playbackState: .constant(.noPlayback), playbackTime: .constant(nil))
         }
         .previewLayout(.fixed(width: 360, height: 360))
-        .environmentObject(Chat.sampleData)
     }
 }

apps/ios/Shared/Views/Chat/ChatItem/DeletedItemView.swift

@@ -11,6 +11,7 @@ import SimpleXChat
 
 struct DeletedItemView: View {
     @Environment(\.colorScheme) var colorScheme
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
 
     var body: some View {
@@ -18,7 +19,7 @@ struct DeletedItemView: View {
             Text(chatItem.content.text)
                 .foregroundColor(.secondary)
                 .italic()
-            CIMetaView(chatItem: chatItem)
+            CIMetaView(chat: chat, chatItem: chatItem)
                 .padding(.horizontal, 12)
         }
         .padding(.leading, 12)
@@ -32,8 +33,8 @@ struct DeletedItemView: View {
 struct DeletedItemView_Previews: PreviewProvider {
     static var previews: some View {
         Group {
-            DeletedItemView(chatItem: ChatItem.getDeletedContentSample())
-            DeletedItemView(chatItem: ChatItem.getDeletedContentSample(dir: .groupRcv(groupMember: GroupMember.sampleData)))
+            DeletedItemView(chat: Chat.sampleData, chatItem: ChatItem.getDeletedContentSample())
+            DeletedItemView(chat: Chat.sampleData, chatItem: ChatItem.getDeletedContentSample(dir: .groupRcv(groupMember: GroupMember.sampleData)))
         }
         .previewLayout(.fixed(width: 360, height: 200))
     }

apps/ios/Shared/Views/Chat/ChatItem/EmojiItemView.swift

@@ -10,6 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct EmojiItemView: View {
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
 
     var body: some View {
@@ -17,7 +18,7 @@ struct EmojiItemView: View {
             emojiText(chatItem.content.text)
                 .padding(.top, 8)
                 .padding(.horizontal, 6)
-            CIMetaView(chatItem: chatItem)
+            CIMetaView(chat: chat, chatItem: chatItem)
                 .padding(.bottom, 8)
                 .padding(.horizontal, 12)
         }
@@ -32,8 +33,8 @@ func emojiText(_ text: String) -> Text {
 struct EmojiItemView_Previews: PreviewProvider {
     static var previews: some View {
         Group{
-            EmojiItemView(chatItem: ChatItem.getSample(1, .directSnd, .now, "🙂", .sndSent(sndProgress: .complete)))
-            EmojiItemView(chatItem: ChatItem.getSample(2, .directRcv, .now, "👍"))
+            EmojiItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(1, .directSnd, .now, "🙂", .sndSent(sndProgress: .complete)))
+            EmojiItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directRcv, .now, "👍"))
         }
         .previewLayout(.fixed(width: 360, height: 70))
     }

apps/ios/Shared/Views/Chat/ChatItem/FramedCIVoiceView.swift

@@ -88,13 +88,12 @@ struct FramedCIVoiceView_Previews: PreviewProvider {
             file: CIFile.getSample(fileStatus: .sndComplete)
         )
         Group {
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: sentVoiceMessage, revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getVoiceMsgContentSample(text: "Hello there"), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getVoiceMsgContentSample(text: "Hello there", fileStatus: .rcvTransfer(rcvProgress: 7, rcvTotal: 10)), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getVoiceMsgContentSample(text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: voiceMessageWithQuote, revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: sentVoiceMessage, revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getVoiceMsgContentSample(text: "Hello there"), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getVoiceMsgContentSample(text: "Hello there", fileStatus: .rcvTransfer(rcvProgress: 7, rcvTotal: 10)), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getVoiceMsgContentSample(text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: voiceMessageWithQuote, revealed: Binding.constant(false))
         }
         .previewLayout(.fixed(width: 360, height: 360))
-        .environmentObject(Chat.sampleData)
     }
 }

apps/ios/Shared/Views/Chat/ChatItem/FullScreenMediaView.swift

@@ -150,7 +150,7 @@ struct FullScreenMediaView: View {
 
     private func startPlayerAndNotify() {
         if let player = player {
-            ChatModel.shared.stopPreviousRecPlay = url
+            m.stopPreviousRecPlay = url
             player.play()
         }
     }

apps/ios/Shared/Views/Chat/ChatItem/IntegrityErrorItemView.swift

@@ -10,11 +10,12 @@ import SwiftUI
 import SimpleXChat
 
 struct IntegrityErrorItemView: View {
+    @ObservedObject var chat: Chat
     var msgError: MsgErrorType
     var chatItem: ChatItem
 
     var body: some View {
-        CIMsgError(chatItem: chatItem) {
+        CIMsgError(chat: chat, chatItem: chatItem) {
             switch msgError {
             case .msgSkipped:
                 AlertManager.shared.showAlertMsg(
@@ -52,6 +53,7 @@ struct IntegrityErrorItemView: View {
 }
 
 struct CIMsgError: View {
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
     var onTap: () -> Void
 
@@ -60,7 +62,7 @@ struct CIMsgError: View {
             Text(chatItem.content.text)
                 .foregroundColor(.red)
                 .italic()
-            CIMetaView(chatItem: chatItem)
+            CIMetaView(chat: chat, chatItem: chatItem)
                 .padding(.horizontal, 12)
         }
         .padding(.leading, 12)
@@ -74,6 +76,6 @@ struct CIMsgError: View {
 
 struct IntegrityErrorItemView_Previews: PreviewProvider {
     static var previews: some View {
-        IntegrityErrorItemView(msgError: .msgBadHash, chatItem: ChatItem.getIntegrityErrorSample())
+        IntegrityErrorItemView(chat: Chat.sampleData, msgError: .msgBadHash, chatItem: ChatItem.getIntegrityErrorSample())
     }
 }

apps/ios/Shared/Views/Chat/ChatItem/MarkedDeletedItemView.swift

@@ -10,39 +10,70 @@ import SwiftUI
 import SimpleXChat
 
 struct MarkedDeletedItemView: View {
+    @EnvironmentObject var m: ChatModel
     @Environment(\.colorScheme) var colorScheme
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
+    @Binding var revealed: Bool
 
     var body: some View {
-        HStack(alignment: .bottom, spacing: 0) {
-            if case let .moderated(_, byGroupMember) = chatItem.meta.itemDeleted {
-                markedDeletedText("moderated by \(byGroupMember.chatViewName)")
-            } else {
-                markedDeletedText("marked deleted")
-            }
-            CIMetaView(chatItem: chatItem)
-                .padding(.horizontal, 12)
-        }
-        .padding(.leading, 12)
+        (Text(mergedMarkedDeletedText).italic() + Text(" ") + chatItem.timestampText)
+        .font(.caption)
+        .foregroundColor(.secondary)
+        .padding(.horizontal, 12)
         .padding(.vertical, 6)
         .background(chatItemFrameColor(chatItem, colorScheme))
         .cornerRadius(18)
         .textSelection(.disabled)
     }
 
-    func markedDeletedText(_ s: LocalizedStringKey) -> some View {
-        Text(s)
-            .font(.caption)
-            .foregroundColor(.secondary)
-            .italic()
-            .lineLimit(1)
+    var mergedMarkedDeletedText: LocalizedStringKey {
+        if !revealed,
+           let ciCategory = chatItem.mergeCategory,
+           var i = m.getChatItemIndex(chatItem) {
+            var moderated = 0
+            var blocked = 0
+            var deleted = 0
+            var moderatedBy: Set<String> = []
+            while i < m.reversedChatItems.count,
+                  let ci = .some(m.reversedChatItems[i]),
+                  ci.mergeCategory == ciCategory,
+                  let itemDeleted = ci.meta.itemDeleted {
+                switch itemDeleted {
+                case let .moderated(_, byGroupMember):
+                    moderated += 1
+                    moderatedBy.insert(byGroupMember.displayName)
+                case .blocked: blocked += 1
+                case .deleted: deleted += 1
+                }
+                i += 1
+            }
+            let total = moderated + blocked + deleted
+            return total <= 1
+            ? markedDeletedText
+            : total == moderated
+            ? "\(total) messages moderated by \(moderatedBy.joined(separator: ", "))"
+            : total == blocked
+            ? "\(total) messages blocked"
+            : "\(total) messages marked deleted"
+        } else {
+            return markedDeletedText
+        }
+    }
+
+    var markedDeletedText: LocalizedStringKey {
+        switch chatItem.meta.itemDeleted {
+        case let .moderated(_, byGroupMember): "moderated by \(byGroupMember.displayName)"
+        case .blocked: "blocked"
+        default: "marked deleted"
+        }
     }
 }
 
 struct MarkedDeletedItemView_Previews: PreviewProvider {
     static var previews: some View {
         Group {
-            MarkedDeletedItemView(chatItem: ChatItem.getSample(1, .directSnd, .now, "hello", .sndSent(sndProgress: .complete), itemDeleted: .deleted(deletedTs: .now)))
+            MarkedDeletedItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(1, .directSnd, .now, "hello", .sndSent(sndProgress: .complete), itemDeleted: .deleted(deletedTs: .now)), revealed: Binding.constant(true))
         }
         .previewLayout(.fixed(width: 360, height: 200))
     }

apps/ios/Shared/Views/Chat/ChatItem/MsgContentView.swift

@@ -25,7 +25,7 @@ private func typing(_ w: Font.Weight = .light) -> Text {
 }
 
 struct MsgContentView: View {
-    @EnvironmentObject var chat: Chat
+    @ObservedObject var chat: Chat
     var text: String
     var formattedText: [FormattedText]? = nil
     var sender: String? = nil
@@ -152,6 +152,7 @@ struct MsgContentView_Previews: PreviewProvider {
     static var previews: some View {
         let chatItem = ChatItem.getSample(1, .directSnd, .now, "hello")
         return MsgContentView(
+            chat: Chat.sampleData,
             text: chatItem.text,
             formattedText: chatItem.formattedText,
             sender: chatItem.memberDisplayName,

apps/ios/Shared/Views/Chat/ChatItemInfoView.swift

@@ -10,6 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct ChatItemInfoView: View {
+    @EnvironmentObject var chatModel: ChatModel
     @Environment(\.colorScheme) var colorScheme
     var ci: ChatItem
     @Binding var chatItemInfo: ChatItemInfo?
@@ -290,8 +291,8 @@ struct ChatItemInfoView: View {
 
     private func membersStatuses(_ memberDeliveryStatuses: [MemberDeliveryStatus]) -> [(GroupMember, CIStatus)] {
         memberDeliveryStatuses.compactMap({ mds in
-            if let mem = ChatModel.shared.groupMembers.first(where: { $0.groupMemberId == mds.groupMemberId }) {
-                return (mem, mds.memberDeliveryStatus)
+            if let mem = chatModel.getGroupMember(mds.groupMemberId) {
+                return (mem.wrapped, mds.memberDeliveryStatus)
             } else {
                 return nil
             }

apps/ios/Shared/Views/Chat/ChatItemView.swift

@@ -10,7 +10,7 @@ import SwiftUI
 import SimpleXChat
 
 struct ChatItemView: View {
-    var chatInfo: ChatInfo
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
     var maxWidth: CGFloat = .infinity
     @State var scrollProxy: ScrollViewProxy? = nil
@@ -19,8 +19,19 @@ struct ChatItemView: View {
     @Binding var audioPlayer: AudioPlayer?
     @Binding var playbackState: VoiceMessagePlaybackState
     @Binding var playbackTime: TimeInterval?
-    init(chatInfo: ChatInfo, chatItem: ChatItem, showMember: Bool = false, maxWidth: CGFloat = .infinity, scrollProxy: ScrollViewProxy? = nil, revealed: Binding<Bool>, allowMenu: Binding<Bool> = .constant(false), audioPlayer: Binding<AudioPlayer?> = .constant(nil), playbackState: Binding<VoiceMessagePlaybackState> = .constant(.noPlayback), playbackTime: Binding<TimeInterval?> = .constant(nil)) {
-        self.chatInfo = chatInfo
+    init(
+        chat: Chat,
+        chatItem: ChatItem,
+        showMember: Bool = false,
+        maxWidth: CGFloat = .infinity,
+        scrollProxy: ScrollViewProxy? = nil,
+        revealed: Binding<Bool>,
+        allowMenu: Binding<Bool> = .constant(false),
+        audioPlayer: Binding<AudioPlayer?> = .constant(nil),
+        playbackState: Binding<VoiceMessagePlaybackState> = .constant(.noPlayback),
+        playbackTime: Binding<TimeInterval?> = .constant(nil)
+    ) {
+        self.chat = chat
         self.chatItem = chatItem
         self.maxWidth = maxWidth
         _scrollProxy = .init(initialValue: scrollProxy)
@@ -33,15 +44,15 @@ struct ChatItemView: View {
 
     var body: some View {
         let ci = chatItem
-        if chatItem.meta.itemDeleted != nil && !revealed {
-            MarkedDeletedItemView(chatItem: chatItem)
+        if chatItem.meta.itemDeleted != nil && (!revealed || chatItem.isDeletedContent) {
+            MarkedDeletedItemView(chat: chat, chatItem: chatItem, revealed: $revealed)
         } else if ci.quotedItem == nil && ci.meta.itemDeleted == nil && !ci.meta.isLive {
             if let mc = ci.content.msgContent, mc.isText && isShortEmoji(ci.content.text) {
-                EmojiItemView(chatItem: ci)
+                EmojiItemView(chat: chat, chatItem: ci)
             } else if ci.content.text.isEmpty, case let .voice(_, duration) = ci.content.msgContent {
-                CIVoiceView(chatItem: ci, recordingFile: ci.file, duration: duration, audioPlayer: $audioPlayer, playbackState: $playbackState, playbackTime: $playbackTime, allowMenu: $allowMenu)
+                CIVoiceView(chat: chat, chatItem: ci, recordingFile: ci.file, duration: duration, audioPlayer: $audioPlayer, playbackState: $playbackState, playbackTime: $playbackTime, allowMenu: $allowMenu)
             } else if ci.content.msgContent == nil {
-                ChatItemContentView(chatInfo: chatInfo, chatItem: chatItem, msgContentView: { Text(ci.text) }) // msgContent is unreachable branch in this case
+                ChatItemContentView(chat: chat, chatItem: chatItem, revealed: $revealed, msgContentView: { Text(ci.text) }) // msgContent is unreachable branch in this case
             } else {
                 framedItemView()
             }
@@ -51,14 +62,15 @@ struct ChatItemView: View {
     }
 
     private func framedItemView() -> some View {
-        FramedItemView(chatInfo: chatInfo, chatItem: chatItem, maxWidth: maxWidth, scrollProxy: scrollProxy, allowMenu: $allowMenu, audioPlayer: $audioPlayer, playbackState: $playbackState, playbackTime: $playbackTime)
+        FramedItemView(chat: chat, chatItem: chatItem, revealed: $revealed, maxWidth: maxWidth, scrollProxy: scrollProxy, allowMenu: $allowMenu, audioPlayer: $audioPlayer, playbackState: $playbackState, playbackTime: $playbackTime)
     }
 }
 
 struct ChatItemContentView<Content: View>: View {
     @EnvironmentObject var chatModel: ChatModel
-    var chatInfo: ChatInfo
+    @ObservedObject var chat: Chat
     var chatItem: ChatItem
+    @Binding var revealed: Bool
     var msgContentView: () -> Content
     @AppStorage(DEFAULT_DEVELOPER_TOOLS) private var developerTools = false
 
@@ -72,15 +84,14 @@ struct ChatItemContentView<Content: View>: View {
         case let .rcvCall(status, duration): callItemView(status, duration)
         case let .rcvIntegrityError(msgError):
             if developerTools {
-                IntegrityErrorItemView(msgError: msgError, chatItem: chatItem)
+                IntegrityErrorItemView(chat: chat, msgError: msgError, chatItem: chatItem)
             } else {
                 ZStack {}
             }
-        case let .rcvDecryptionError(msgDecryptError, msgCount): CIRcvDecryptionError(msgDecryptError: msgDecryptError, msgCount: msgCount, chatItem: chatItem)
+        case let .rcvDecryptionError(msgDecryptError, msgCount): CIRcvDecryptionError(chat: chat, msgDecryptError: msgDecryptError, msgCount: msgCount, chatItem: chatItem)
         case let .rcvGroupInvitation(groupInvitation, memberRole): groupInvitationItemView(groupInvitation, memberRole)
         case let .sndGroupInvitation(groupInvitation, memberRole): groupInvitationItemView(groupInvitation, memberRole)
         case .rcvDirectEvent: eventItemView()
-        case .rcvGroupEvent(.memberConnected): CIEventView(eventText: membersConnectedItemText)
         case .rcvGroupEvent(.memberCreatedContact): CIMemberCreatedContactView(chatItem: chatItem)
         case .rcvGroupEvent: eventItemView()
         case .sndGroupEvent: eventItemView()
@@ -89,9 +100,9 @@ struct ChatItemContentView<Content: View>: View {
         case let .rcvChatFeature(feature, enabled, _): chatFeatureView(feature, enabled.iconColor)
         case let .sndChatFeature(feature, enabled, _): chatFeatureView(feature, enabled.iconColor)
         case let .rcvChatPreference(feature, allowed, param):
-            CIFeaturePreferenceView(chatItem: chatItem, feature: feature, allowed: allowed, param: param)
+            CIFeaturePreferenceView(chat: chat, chatItem: chatItem, feature: feature, allowed: allowed, param: param)
         case let .sndChatPreference(feature, _, _):
-            CIChatFeatureView(chatItem: chatItem, feature: feature, icon: feature.icon, iconColor: .secondary)
+            CIChatFeatureView(chatItem: chatItem, revealed: $revealed, feature: feature, icon: feature.icon, iconColor: .secondary)
         case let .rcvGroupFeature(feature, preference, _): chatFeatureView(feature, preference.enable.iconColor)
         case let .sndGroupFeature(feature, preference, _): chatFeatureView(feature, preference.enable.iconColor)
         case let .rcvChatFeatureRejected(feature): chatFeatureView(feature, .red)
@@ -103,15 +114,15 @@ struct ChatItemContentView<Content: View>: View {
     }
 
     private func deletedItemView() -> some View {
-        DeletedItemView(chatItem: chatItem)
+        DeletedItemView(chat: chat, chatItem: chatItem)
     }
 
     private func callItemView(_ status: CICallStatus, _ duration: Int) -> some View {
-        CICallItemView(chatInfo: chatInfo, chatItem: chatItem, status: status, duration: duration)
+        CICallItemView(chat: chat, chatItem: chatItem, status: status, duration: duration)
     }
 
     private func groupInvitationItemView(_ groupInvitation: CIGroupInvitation, _ memberRole: GroupMemberRole) -> some View {
-        CIGroupInvitationView(chatItem: chatItem, groupInvitation: groupInvitation, memberRole: memberRole, chatIncognito: chatInfo.incognito)
+        CIGroupInvitationView(chatItem: chatItem, groupInvitation: groupInvitation, memberRole: memberRole, chatIncognito: chat.chatInfo.incognito)
     }
 
     private func eventItemView() -> some View {
@@ -119,7 +130,9 @@ struct ChatItemContentView<Content: View>: View {
     }
 
     private func eventItemViewText() -> Text {
-        if let member = chatItem.memberDisplayName {
+        if !revealed, let t = mergedGroupEventText {
+            return chatEventText(t + Text(" ") + chatItem.timestampText)
+        } else if let member = chatItem.memberDisplayName {
             return Text(member + " ")
                     .font(.caption)
                     .foregroundColor(.secondary)
@@ -131,36 +144,44 @@ struct ChatItemContentView<Content: View>: View {
     }
 
     private func chatFeatureView(_ feature: Feature, _ iconColor: Color) -> some View {
-        CIChatFeatureView(chatItem: chatItem, feature: feature, iconColor: iconColor)
+        CIChatFeatureView(chatItem: chatItem, revealed: $revealed, feature: feature, iconColor: iconColor)
     }
 
-    private var membersConnectedItemText: Text {
-        if let t = membersConnectedText {
-            return chatEventText(t, chatItem.timestampText)
+    private var mergedGroupEventText: Text? {
+        let (count, ns) = chatModel.getConnectedMemberNames(chatItem)
+        let members: LocalizedStringKey =
+            switch ns.count {
+            case 1: "\(ns[0]) connected"
+            case 2: "\(ns[0]) and \(ns[1]) connected"
+            case 3: "\(ns[0] + ", " + ns[1]) and \(ns[2]) connected"
+            default:
+                ns.count > 3
+                ? "\(ns[0]), \(ns[1]) and \(ns.count - 2) other members connected"
+                : ""
+            }
+        return if count <= 1 {
+            nil
+        } else if ns.count == 0 {
+            Text("\(count) group events")
+        } else if count > ns.count {
+            Text(members) + Text(" ") + Text("and \(count - ns.count) other events")
         } else {
-            return eventItemViewText()
+            Text(members)
         }
     }
-
-    private var membersConnectedText: LocalizedStringKey? {
-        let ns = chatModel.getConnectedMemberNames(chatItem)
-        return ns.count > 3
-            ? "\(ns[0]), \(ns[1]) and \(ns.count - 2) other members connected"
-            : ns.count == 3
-            ? "\(ns[0] + ", " + ns[1]) and \(ns[2]) connected"
-            : ns.count == 2
-            ? "\(ns[0]) and \(ns[1]) connected"
-            : nil
-    }
 }
 
-func chatEventText(_ eventText: LocalizedStringKey, _ ts: Text) -> Text {
-    (Text(eventText) + Text(" ") + ts)
+func chatEventText(_ text: Text) -> Text {
+    text
         .font(.caption)
         .foregroundColor(.secondary)
         .fontWeight(.light)
 }
 
+func chatEventText(_ eventText: LocalizedStringKey, _ ts: Text) -> Text {
+    chatEventText(Text(eventText) + Text(" ") + ts)
+}
+
 func chatEventText(_ ci: ChatItem) -> Text {
     chatEventText("\(ci.content.text)", ci.timestampText)
 }
@@ -168,15 +189,15 @@ func chatEventText(_ ci: ChatItem) -> Text {
 struct ChatItemView_Previews: PreviewProvider {
     static var previews: some View {
         Group{
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getSample(1, .directSnd, .now, "hello"), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getSample(2, .directRcv, .now, "hello there too"), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getSample(1, .directSnd, .now, "🙂"), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getSample(2, .directRcv, .now, "🙂🙂🙂🙂🙂"), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getSample(2, .directRcv, .now, "🙂🙂🙂🙂🙂🙂"), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getDeletedContentSample(), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getSample(1, .directSnd, .now, "hello", .sndSent(sndProgress: .complete), itemDeleted: .deleted(deletedTs: .now)), revealed: Binding.constant(false))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getSample(1, .directSnd, .now, "🙂", .sndSent(sndProgress: .complete), itemLive: true), revealed: Binding.constant(true))
-            ChatItemView(chatInfo: ChatInfo.sampleData.direct, chatItem: ChatItem.getSample(1, .directSnd, .now, "hello", .sndSent(sndProgress: .complete), itemLive: true), revealed: Binding.constant(true))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(1, .directSnd, .now, "hello"), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directRcv, .now, "hello there too"), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(1, .directSnd, .now, "🙂"), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directRcv, .now, "🙂🙂🙂🙂🙂"), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(2, .directRcv, .now, "🙂🙂🙂🙂🙂🙂"), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getDeletedContentSample(), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(1, .directSnd, .now, "hello", .sndSent(sndProgress: .complete), itemDeleted: .deleted(deletedTs: .now)), revealed: Binding.constant(false))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(1, .directSnd, .now, "🙂", .sndSent(sndProgress: .complete), itemLive: true), revealed: Binding.constant(true))
+            ChatItemView(chat: Chat.sampleData, chatItem: ChatItem.getSample(1, .directSnd, .now, "hello", .sndSent(sndProgress: .complete), itemLive: true), revealed: Binding.constant(true))
         }
         .previewLayout(.fixed(width: 360, height: 70))
         .environmentObject(Chat.sampleData)
@@ -188,7 +209,7 @@ struct ChatItemView_NonMsgContentDeleted_Previews: PreviewProvider {
         let ciFeatureContent = CIContent.rcvChatFeature(feature: .fullDelete, enabled: FeatureEnabled(forUser: false, forContact: false), param: nil)
         Group{
             ChatItemView(
-                chatInfo: ChatInfo.sampleData.direct,
+                chat: Chat.sampleData,
                 chatItem: ChatItem(
                     chatDir: .directRcv,
                     meta: CIMeta.getSample(1, .now, "1 skipped message", .rcvRead, itemDeleted: .deleted(deletedTs: .now)),
@@ -199,7 +220,7 @@ struct ChatItemView_NonMsgContentDeleted_Previews: PreviewProvider {
                 revealed: Binding.constant(true)
             )
             ChatItemView(
-                chatInfo: ChatInfo.sampleData.direct,
+                chat: Chat.sampleData,
                 chatItem: ChatItem(
                     chatDir: .directRcv,
                     meta: CIMeta.getSample(1, .now, "1 skipped message", .rcvRead),
@@ -210,7 +231,7 @@ struct ChatItemView_NonMsgContentDeleted_Previews: PreviewProvider {
                 revealed: Binding.constant(true)
             )
             ChatItemView(
-                chatInfo: ChatInfo.sampleData.direct,
+                chat: Chat.sampleData,
                 chatItem: ChatItem(
                     chatDir: .directRcv,
                     meta: CIMeta.getSample(1, .now, "received invitation to join group team as admin", .rcvRead, itemDeleted: .deleted(deletedTs: .now)),
@@ -221,7 +242,7 @@ struct ChatItemView_NonMsgContentDeleted_Previews: PreviewProvider {
                 revealed: Binding.constant(true)
             )
             ChatItemView(
-                chatInfo: ChatInfo.sampleData.direct,
+                chat: Chat.sampleData,
                 chatItem: ChatItem(
                     chatDir: .directRcv,
                     meta: CIMeta.getSample(1, .now, "group event text", .rcvRead, itemDeleted: .deleted(deletedTs: .now)),
@@ -232,7 +253,7 @@ struct ChatItemView_NonMsgContentDeleted_Previews: PreviewProvider {
                 revealed: Binding.constant(true)
             )
             ChatItemView(
-                chatInfo: ChatInfo.sampleData.direct,
+                chat: Chat.sampleData,
                 chatItem: ChatItem(
                     chatDir: .directRcv,
                     meta: CIMeta.getSample(1, .now, ciFeatureContent.text, .rcvRead, itemDeleted: .deleted(deletedTs: .now)),

apps/ios/Shared/Views/Chat/ChatView.swift

@@ -21,9 +21,7 @@ struct ChatView: View {
     @State private var showChatInfoSheet: Bool = false
     @State private var showAddMembersSheet: Bool = false
     @State private var composeState = ComposeState()
-    @State private var deletingItem: ChatItem? = nil
     @State private var keyboardVisible = false
-    @State private var showDeleteMessage = false
     @State private var connectionStats: ConnectionStats?
     @State private var customUserProfile: Profile?
     @State private var connectionCode: String?
@@ -36,7 +34,8 @@ struct ChatView: View {
     @State private var searchText: String = ""
     @FocusState private var searchFocussed
     // opening GroupMemberInfoView on member icon
-    @State private var selectedMember: GroupMember? = nil
+    @State private var membersLoaded = false
+    @State private var selectedMember: GMember? = nil
     // opening GroupLinkView on link button (incognito)
     @State private var showGroupLinkSheet: Bool = false
     @State private var groupLink: String?
@@ -97,6 +96,8 @@ struct ChatView: View {
                     if chatModel.chatId == nil {
                         chatModel.chatItemStatuses = [:]
                         chatModel.reversedChatItems = []
+                        chatModel.groupMembers = []
+                        membersLoaded = false
                     }
                 }
             }
@@ -134,18 +135,21 @@ struct ChatView: View {
                     }
                 } else if case let .group(groupInfo) = cInfo {
                     Button {
-                        Task {
-                            let groupMembers = await apiListMembers(groupInfo.groupId)
-                            await MainActor.run {
-                                ChatModel.shared.groupMembers = groupMembers
-                                showChatInfoSheet = true
-                            }
-                        }
+                        Task { await loadGroupMembers(groupInfo) { showChatInfoSheet = true } }
                     } label: {
                         ChatInfoToolbar(chat: chat)
                     }
                     .appSheet(isPresented: $showChatInfoSheet) {
-                        GroupChatInfoView(chat: chat, groupInfo: groupInfo)
+                        GroupChatInfoView(
+                            chat: chat,
+                            groupInfo: Binding(
+                                get: { groupInfo },
+                                set: { gInfo in
+                                    chat.chatInfo = .group(groupInfo: gInfo)
+                                    chat.created = Date.now
+                                }
+                            )
+                        )
                     }
                 }
             }
@@ -208,6 +212,17 @@ struct ChatView: View {
         }
     }
 
+    private func loadGroupMembers(_ groupInfo: GroupInfo, updateView: @escaping () -> Void = {}) async {
+        let groupMembers = await apiListMembers(groupInfo.groupId)
+        await MainActor.run {
+            if chatModel.chatId == groupInfo.id {
+                chatModel.groupMembers = groupMembers.map { GMember.init($0) }
+                membersLoaded = true
+                updateView()
+            }
+        }
+    }
+
     private func initChatView() {
         let cInfo = chat.chatInfo
         if case let .direct(contact) = cInfo {
@@ -416,13 +431,7 @@ struct ChatView: View {
     private func addMembersButton() -> some View {
         Button {
             if case let .group(gInfo) = chat.chatInfo {
-                Task {
-                    let groupMembers = await apiListMembers(gInfo.groupId)
-                    await MainActor.run {
-                        ChatModel.shared.groupMembers = groupMembers
-                        showAddMembersSheet = true
-                    }
-                }
+                Task { await loadGroupMembers(gInfo) { showAddMembersSheet = true } }
             }
         } label: {
             Image(systemName: "person.crop.circle.badge.plus")
@@ -477,73 +486,30 @@ struct ChatView: View {
     }
     
     @ViewBuilder private func chatItemView(_ ci: ChatItem, _ maxWidth: CGFloat) -> some View {
-        if case let .groupRcv(member) = ci.chatDir,
-           case let .group(groupInfo) = chat.chatInfo {
-            let (prevItem, nextItem) = chatModel.getChatItemNeighbors(ci)
-            if ci.memberConnected != nil && nextItem?.memberConnected != nil {
-                // memberConnected events are aggregated at the last chat item in a row of such events, see ChatItemView
-                ZStack {} // scroll doesn't work if it's EmptyView()
-            } else {
-                if prevItem == nil || showMemberImage(member, prevItem) {
-                    VStack(alignment: .leading, spacing: 4) {
-                        if ci.content.showMemberName {
-                            Text(member.displayName)
-                                .font(.caption)
-                                .foregroundStyle(.secondary)
-                                .padding(.leading, memberImageSize + 14)
-                                .padding(.top, 7)
-                        }
-                        HStack(alignment: .top, spacing: 8) {
-                            ProfileImage(imageStr: member.memberProfile.image)
-                                .frame(width: memberImageSize, height: memberImageSize)
-                                .onTapGesture { selectedMember = member }
-                                .appSheet(item: $selectedMember) { member in
-                                    GroupMemberInfoView(groupInfo: groupInfo, member: member, navigation: true)
-                                }
-                            chatItemWithMenu(ci, maxWidth)
-                        }
-                    }
-                    .padding(.top, 5)
-                    .padding(.trailing)
-                    .padding(.leading, 12)
-                } else {
-                    chatItemWithMenu(ci, maxWidth)
-                        .padding(.top, 5)
-                        .padding(.trailing)
-                        .padding(.leading, memberImageSize + 8 + 12)
-                }
-            }
-        } else {
-            chatItemWithMenu(ci, maxWidth)
-                .padding(.horizontal)
-                .padding(.top, 5)
-        }
-    }
-
-    private func chatItemWithMenu(_ ci: ChatItem, _ maxWidth: CGFloat) -> some View {
         ChatItemWithMenu(
-            ci: ci,
+            chat: chat,
+            chatItem: ci,
             maxWidth: maxWidth,
-            scrollProxy: scrollProxy,
-            deleteMessage: deleteMessage,
-            deletingItem: $deletingItem,
             composeState: $composeState,
-            showDeleteMessage: $showDeleteMessage
+            selectedMember: $selectedMember,
+            chatView: self
         )
-        .environmentObject(chat)
     }
 
     private struct ChatItemWithMenu: View {
-        @EnvironmentObject var chat: Chat
+        @EnvironmentObject var m: ChatModel
         @Environment(\.colorScheme) var colorScheme
-        var ci: ChatItem
+        @ObservedObject var chat: Chat
+        var chatItem: ChatItem
         var maxWidth: CGFloat
-        var scrollProxy: ScrollViewProxy?
-        var deleteMessage: (CIDeleteMode) -> Void
-        @Binding var deletingItem: ChatItem?
         @Binding var composeState: ComposeState
-        @Binding var showDeleteMessage: Bool
+        @Binding var selectedMember: GMember?
+        var chatView: ChatView
 
+        @State private var deletingItem: ChatItem? = nil
+        @State private var showDeleteMessage = false
+        @State private var deletingItems: [Int64] = []
+        @State private var showDeleteMessages = false
         @State private var revealed = false
         @State private var showChatItemInfoSheet: Bool = false
         @State private var chatItemInfo: ChatItemInfo?
@@ -555,18 +521,114 @@ struct ChatView: View {
         @State private var playbackTime: TimeInterval?
 
         var body: some View {
+            let (currIndex, nextItem) = m.getNextChatItem(chatItem)
+            let ciCategory = chatItem.mergeCategory
+            if (ciCategory != nil && ciCategory == nextItem?.mergeCategory) {
+                // memberConnected events and deleted items are aggregated at the last chat item in a row, see ChatItemView
+                ZStack {} // scroll doesn't work if it's EmptyView()
+            } else {
+                let (prevHidden, prevItem) = m.getPrevShownChatItem(currIndex, ciCategory)
+                let range = itemsRange(currIndex, prevHidden)
+                if revealed, let range = range {
+                    let items = Array(zip(Array(range), m.reversedChatItems[range]))
+                    ForEach(items, id: \.1.viewId) { (i, ci) in
+                        let prev = i == prevHidden ? prevItem : m.reversedChatItems[i + 1]
+                        chatItemView(ci, nil, prev)
+                    }
+                } else {
+                    chatItemView(chatItem, range, prevItem)
+                }
+            }
+        }
+
+        @ViewBuilder func chatItemView(_ ci: ChatItem, _ range: ClosedRange<Int>?, _ prevItem: ChatItem?) -> some View {
+            if case let .groupRcv(member) = ci.chatDir,
+               case let .group(groupInfo) = chat.chatInfo {
+                let (prevMember, memCount): (GroupMember?, Int) =
+                    if let range = range {
+                        m.getPrevHiddenMember(member, range)
+                    } else {
+                        (nil, 1)
+                    }
+                if prevItem == nil || showMemberImage(member, prevItem) || prevMember != nil {
+                    VStack(alignment: .leading, spacing: 4) {
+                        if ci.content.showMemberName {
+                            Text(memberNames(member, prevMember, memCount))
+                                .font(.caption)
+                                .foregroundStyle(.secondary)
+                                .padding(.leading, memberImageSize + 14)
+                                .padding(.top, 7)
+                        }
+                        HStack(alignment: .top, spacing: 8) {
+                            ProfileImage(imageStr: member.memberProfile.image)
+                                .frame(width: memberImageSize, height: memberImageSize)
+                                .onTapGesture {
+                                    if chatView.membersLoaded {
+                                        selectedMember = m.getGroupMember(member.groupMemberId)
+                                    } else {
+                                        Task {
+                                            await chatView.loadGroupMembers(groupInfo) {
+                                                selectedMember = m.getGroupMember(member.groupMemberId)
+                                            }
+                                        }
+                                    }
+                                }
+                                .appSheet(item: $selectedMember) { member in
+                                    GroupMemberInfoView(groupInfo: groupInfo, groupMember: member, navigation: true)
+                                }
+                            chatItemWithMenu(ci, range, maxWidth)
+                        }
+                    }
+                    .padding(.top, 5)
+                    .padding(.trailing)
+                    .padding(.leading, 12)
+                } else {
+                    chatItemWithMenu(ci, range, maxWidth)
+                        .padding(.top, 5)
+                        .padding(.trailing)
+                        .padding(.leading, memberImageSize + 8 + 12)
+                }
+            } else {
+                chatItemWithMenu(ci, range, maxWidth)
+                    .padding(.horizontal)
+                    .padding(.top, 5)
+            }
+        }
+
+        private func memberNames(_ member: GroupMember, _ prevMember: GroupMember?, _ memCount: Int) -> LocalizedStringKey {
+            let name = member.displayName
+            return if let prevName = prevMember?.displayName {
+                memCount > 2
+                ? "\(name), \(prevName) and \(memCount - 2) members"
+                : "\(name) and \(prevName)"
+            } else {
+                "\(name)"
+            }
+        }
+
+        @ViewBuilder func chatItemWithMenu(_ ci: ChatItem, _ range: ClosedRange<Int>?, _ maxWidth: CGFloat) -> some View {
             let alignment: Alignment = ci.chatDir.sent ? .trailing : .leading
             let uiMenu: Binding<UIMenu> = Binding(
-                get: { UIMenu(title: "", children: menu(live: composeState.liveMessage != nil)) },
+                get: { UIMenu(title: "", children: menu(ci, range, live: composeState.liveMessage != nil)) },
                 set: { _ in }
             )
             
             VStack(alignment: alignment.horizontal, spacing: 3) {
-                ChatItemView(chatInfo: chat.chatInfo, chatItem: ci, maxWidth: maxWidth, scrollProxy: scrollProxy, revealed: $revealed, allowMenu: $allowMenu, audioPlayer: $audioPlayer, playbackState: $playbackState, playbackTime: $playbackTime)
-                    .uiKitContextMenu(menu: uiMenu, allowMenu: $allowMenu)
-                    .accessibilityLabel("")
+                ChatItemView(
+                    chat: chat,
+                    chatItem: ci,
+                    maxWidth: maxWidth,
+                    scrollProxy: chatView.scrollProxy,
+                    revealed: $revealed,
+                    allowMenu: $allowMenu,
+                    audioPlayer: $audioPlayer,
+                    playbackState: $playbackState,
+                    playbackTime: $playbackTime
+                )
+                .uiKitContextMenu(menu: uiMenu, allowMenu: $allowMenu)
+                .accessibilityLabel("")
                 if ci.content.msgContent != nil && (ci.meta.itemDeleted == nil || revealed) && ci.reactions.count > 0 {
-                    chatItemReactions()
+                    chatItemReactions(ci)
                         .padding(.bottom, 4)
                 }
             }
@@ -580,6 +642,11 @@ struct ChatView: View {
                         }
                     }
                 }
+                .confirmationDialog(deleteMessagesTitle, isPresented: $showDeleteMessages, titleVisibility: .visible) {
+                    Button("Delete for me", role: .destructive) {
+                        deleteMessages()
+                    }
+                }
                 .frame(maxWidth: maxWidth, maxHeight: .infinity, alignment: alignment)
                 .frame(minWidth: 0, maxWidth: .infinity, alignment: alignment)
                 .onDisappear {
@@ -597,7 +664,15 @@ struct ChatView: View {
                 }
         }
 
-        private func chatItemReactions() -> some View {
+        private func showMemberImage(_ member: GroupMember, _ prevItem: ChatItem?) -> Bool {
+            switch (prevItem?.chatDir) {
+            case .groupSnd: return true
+            case let .groupRcv(prevMember): return prevMember.groupMemberId != member.groupMemberId
+            default: return false
+            }
+        }
+
+        private func chatItemReactions(_ ci: ChatItem) -> some View {
             HStack(spacing: 4) {
                 ForEach(ci.reactions, id: \.reaction) { r in
                     let v = HStack(spacing: 4) {
@@ -617,7 +692,7 @@ struct ChatView: View {
 
                     if chat.chatInfo.featureEnabled(.reactions) && (ci.allowAddReaction || r.userReacted) {
                         v.onTapGesture {
-                            setReaction(add: !r.userReacted, reaction: r.reaction)
+                            setReaction(ci, add: !r.userReacted, reaction: r.reaction)
                         }
                     } else {
                         v
@@ -626,10 +701,10 @@ struct ChatView: View {
             }
         }
 
-        private func menu(live: Bool) -> [UIMenuElement] {
+        private func menu(_ ci: ChatItem, _ range: ClosedRange<Int>?, live: Bool) -> [UIMenuElement] {
             var menu: [UIMenuElement] = []
             if let mc = ci.content.msgContent, ci.meta.itemDeleted == nil || revealed {
-                let rs = allReactions()
+                let rs = allReactions(ci)
                 if chat.chatInfo.featureEnabled(.reactions) && ci.allowAddReaction,
                    rs.count > 0 {
                     var rm: UIMenu
@@ -646,10 +721,10 @@ struct ChatView: View {
                     menu.append(rm)
                 }
                 if ci.meta.itemDeleted == nil && !ci.isLiveDummy && !live {
-                    menu.append(replyUIAction())
+                    menu.append(replyUIAction(ci))
                 }
-                menu.append(shareUIAction())
-                menu.append(copyUIAction())
+                menu.append(shareUIAction(ci))
+                menu.append(copyUIAction(ci))
                 if let fileSource = getLoadedFileSource(ci.file) {
                     if case .image = ci.content.msgContent, let image = getLoadedImage(ci.file) {
                         if image.imageData != nil {
@@ -662,9 +737,9 @@ struct ChatView: View {
                     }
                 }
                 if ci.meta.editable && !mc.isVoice && !live {
-                    menu.append(editAction())
+                    menu.append(editAction(ci))
                 }
-                menu.append(viewInfoUIAction())
+                menu.append(viewInfoUIAction(ci))
                 if revealed {
                     menu.append(hideUIAction())
                 }
@@ -674,25 +749,31 @@ struct ChatView: View {
                     menu.append(cancelFileUIAction(file.fileId, cancelAction))
                 }
                 if !live || !ci.meta.isLive {
-                    menu.append(deleteUIAction())
+                    menu.append(deleteUIAction(ci))
                 }
                 if let (groupInfo, _) = ci.memberToModerate(chat.chatInfo) {
-                    menu.append(moderateUIAction(groupInfo))
+                    menu.append(moderateUIAction(ci, groupInfo))
                 }
             } else if ci.meta.itemDeleted != nil {
-                if !ci.isDeletedContent {
+                if revealed {
+                    menu.append(hideUIAction())
+                } else if !ci.isDeletedContent {
                     menu.append(revealUIAction())
+                } else if range != nil {
+                    menu.append(expandUIAction())
                 }
-                menu.append(viewInfoUIAction())
-                menu.append(deleteUIAction())
+                menu.append(viewInfoUIAction(ci))
+                menu.append(deleteUIAction(ci))
             } else if ci.isDeletedContent {
-                menu.append(viewInfoUIAction())
-                menu.append(deleteUIAction())
+                menu.append(viewInfoUIAction(ci))
+                menu.append(deleteUIAction(ci))
+            } else if ci.mergeCategory != nil {
+                menu.append(revealed ? shrinkUIAction() : expandUIAction())
             }
             return menu
         }
         
-        private func replyUIAction() -> UIAction {
+        private func replyUIAction(_ ci: ChatItem) -> UIAction {
             UIAction(
                 title: NSLocalizedString("Reply", comment: "chat item action"),
                 image: UIImage(systemName: "arrowshape.turn.up.left")
@@ -727,11 +808,11 @@ struct ChatView: View {
             )
         }
 
-        private func allReactions() -> [UIAction] {
+        private func allReactions(_ ci: ChatItem) -> [UIAction] {
             MsgReaction.values.compactMap { r in
                 ci.reactions.contains(where: { $0.userReacted && $0.reaction == r })
                 ? nil
-                : UIAction(title: r.text) { _ in setReaction(add: true, reaction: r) }
+                : UIAction(title: r.text) { _ in setReaction(ci, add: true, reaction: r) }
             }
         }
 
@@ -739,7 +820,7 @@ struct ChatView: View {
             rs.count > 4 ? 3 : 4
         }
 
-        private func setReaction(add: Bool, reaction: MsgReaction) {
+        private func setReaction(_ ci: ChatItem, add: Bool, reaction: MsgReaction) {
             Task {
                 do {
                     let cInfo = chat.chatInfo
@@ -751,7 +832,7 @@ struct ChatView: View {
                         reaction: reaction
                     )
                     await MainActor.run {
-                        ChatModel.shared.updateChatItem(chat.chatInfo, chatItem)
+                        m.updateChatItem(chat.chatInfo, chatItem)
                     }
                 } catch let error {
                     logger.error("apiChatItemReaction error: \(responseError(error))")
@@ -759,7 +840,7 @@ struct ChatView: View {
             }
         }
 
-        private func shareUIAction() -> UIAction {
+        private func shareUIAction(_ ci: ChatItem) -> UIAction {
             UIAction(
                 title: NSLocalizedString("Share", comment: "chat item action"),
                 image: UIImage(systemName: "square.and.arrow.up")
@@ -772,7 +853,7 @@ struct ChatView: View {
             }
         }
         
-        private func copyUIAction() -> UIAction {
+        private func copyUIAction(_ ci: ChatItem) -> UIAction {
             UIAction(
                 title: NSLocalizedString("Copy", comment: "chat item action"),
                 image: UIImage(systemName: "doc.on.doc")
@@ -805,7 +886,7 @@ struct ChatView: View {
             }
         }
         
-        private func editAction() -> UIAction {
+        private func editAction(_ ci: ChatItem) -> UIAction {
             UIAction(
                 title: NSLocalizedString("Edit", comment: "chat item action"),
                 image: UIImage(systemName: "square.and.pencil")
@@ -816,7 +897,7 @@ struct ChatView: View {
             }
         }
 
-        private func viewInfoUIAction() -> UIAction {
+        private func viewInfoUIAction(_ ci: ChatItem) -> UIAction {
             UIAction(
                 title: NSLocalizedString("Info", comment: "chat item action"),
                 image: UIImage(systemName: "info.circle")
@@ -829,10 +910,7 @@ struct ChatView: View {
                             chatItemInfo = ciInfo
                         }
                         if case let .group(gInfo) = chat.chatInfo {
-                            let groupMembers = await apiListMembers(gInfo.groupId)
-                            await MainActor.run {
-                                ChatModel.shared.groupMembers = groupMembers
-                            }
+                            await chatView.loadGroupMembers(gInfo)
                         }
                     } catch let error {
                         logger.error("apiGetChatItemInfo error: \(responseError(error))")
@@ -853,7 +931,7 @@ struct ChatView: View {
                     message: Text(cancelAction.alert.message),
                     primaryButton: .destructive(Text(cancelAction.alert.confirm)) {
                         Task {
-                            if let user = ChatModel.shared.currentUser {
+                            if let user = m.currentUser {
                                 await cancelFile(user: user, fileId: fileId)
                             }
                         }
@@ -874,18 +952,45 @@ struct ChatView: View {
             }
         }
         
-        private func deleteUIAction() -> UIAction {
+        private func deleteUIAction(_ ci: ChatItem) -> UIAction {
             UIAction(
                 title: NSLocalizedString("Delete", comment: "chat item action"),
                 image: UIImage(systemName: "trash"),
                 attributes: [.destructive]
             ) { _ in
-                showDeleteMessage = true
-                deletingItem = ci
+                if !revealed && ci.meta.itemDeleted != nil,
+                   let currIndex = m.getChatItemIndex(ci),
+                   let ciCategory = ci.mergeCategory {
+                    let (prevHidden, _) = m.getPrevShownChatItem(currIndex, ciCategory)
+                    if let range = itemsRange(currIndex, prevHidden) {
+                        var itemIds: [Int64] = []
+                        for i in range {
+                            itemIds.append(m.reversedChatItems[i].id)
+                        }
+                        showDeleteMessages = true
+                        deletingItems = itemIds
+                    } else {
+                        showDeleteMessage = true
+                        deletingItem = ci
+                    }
+                } else {
+                    showDeleteMessage = true
+                    deletingItem = ci
+                }
             }
         }
 
-        private func moderateUIAction(_ groupInfo: GroupInfo) -> UIAction {
+        private func itemsRange(_ currIndex: Int?, _ prevHidden: Int?) -> ClosedRange<Int>? {
+            if let currIndex = currIndex,
+               let prevHidden = prevHidden,
+               prevHidden > currIndex {
+                currIndex...prevHidden
+            } else {
+                nil
+            }
+        }
+
+        private func moderateUIAction(_ ci: ChatItem, _ groupInfo: GroupInfo) -> UIAction {
             UIAction(
                 title: NSLocalizedString("Moderate", comment: "chat item action"),
                 image: UIImage(systemName: "flag"),
@@ -917,20 +1022,105 @@ struct ChatView: View {
                 }
             }
         }
-        
+
+        private func expandUIAction() -> UIAction {
+            UIAction(
+                title: NSLocalizedString("Expand", comment: "chat item action"),
+                image: UIImage(systemName: "arrow.up.and.line.horizontal.and.arrow.down")
+            ) { _ in
+                withAnimation {
+                    revealed = true
+                }
+            }
+        }
+
+        private func shrinkUIAction() -> UIAction {
+            UIAction(
+                title: NSLocalizedString("Hide", comment: "chat item action"),
+                image: UIImage(systemName: "arrow.down.and.line.horizontal.and.arrow.up")
+            ) { _ in
+                withAnimation {
+                    revealed = false
+                }
+            }
+        }
+
         private var broadcastDeleteButtonText: LocalizedStringKey {
             chat.chatInfo.featureEnabled(.fullDelete) ? "Delete for everyone" : "Mark deleted for everyone"
         }
-    }
 
-    private func showMemberImage(_ member: GroupMember, _ prevItem: ChatItem?) -> Bool {
-        switch (prevItem?.chatDir) {
-        case .groupSnd: return true
-        case let .groupRcv(prevMember): return prevMember.groupMemberId != member.groupMemberId
-        default: return false
+        var deleteMessagesTitle: LocalizedStringKey {
+            let n = deletingItems.count
+            return n == 1 ? "Delete message?" : "Delete \(n) messages?"
+        }
+
+        private func deleteMessages() {
+            let itemIds = deletingItems
+            if itemIds.count > 0 {
+                let chatInfo = chat.chatInfo
+                Task {
+                    var deletedItems: [ChatItem] = []
+                    for itemId in itemIds {
+                        do {
+                            let (di, _) = try await apiDeleteChatItem(
+                                type: chatInfo.chatType,
+                                id: chatInfo.apiId,
+                                itemId: itemId,
+                                mode: .cidmInternal
+                            )
+                            deletedItems.append(di)
+                        } catch {
+                            logger.error("ChatView.deleteMessage error: \(error.localizedDescription)")
+                        }
+                    }
+                    await MainActor.run {
+                        for di in deletedItems {
+                            m.removeChatItem(chatInfo, di)
+                        }
+                    }
+                }
+            }
+        }
+
+        private func deleteMessage(_ mode: CIDeleteMode) {
+            logger.debug("ChatView deleteMessage")
+            Task {
+                logger.debug("ChatView deleteMessage: in Task")
+                do {
+                    if let di = deletingItem {
+                        var deletedItem: ChatItem
+                        var toItem: ChatItem?
+                        if case .cidmBroadcast = mode,
+                           let (groupInfo, groupMember) = di.memberToModerate(chat.chatInfo) {
+                            (deletedItem, toItem) = try await apiDeleteMemberChatItem(
+                                groupId: groupInfo.apiId,
+                                groupMemberId: groupMember.groupMemberId,
+                                itemId: di.id
+                            )
+                        } else {
+                            (deletedItem, toItem) = try await apiDeleteChatItem(
+                                type: chat.chatInfo.chatType,
+                                id: chat.chatInfo.apiId,
+                                itemId: di.id,
+                                mode: mode
+                            )
+                        }
+                        DispatchQueue.main.async {
+                            deletingItem = nil
+                            if let toItem = toItem {
+                                _ = m.upsertChatItem(chat.chatInfo, toItem)
+                            } else {
+                                m.removeChatItem(chat.chatInfo, deletedItem)
+                            }
+                        }
+                    }
+                } catch {
+                    logger.error("ChatView.deleteMessage error: \(error.localizedDescription)")
+                }
+            }
         }
     }
-    
+
     private func scrollToBottom(_ proxy: ScrollViewProxy) {
         if let ci = chatModel.reversedChatItems.first {
             withAnimation { proxy.scrollTo(ci.viewId, anchor: .top) }
@@ -942,44 +1132,6 @@ struct ChatView: View {
             withAnimation { proxy.scrollTo(ci.viewId, anchor: .top) }
         }
     }
-    
-    private func deleteMessage(_ mode: CIDeleteMode) {
-        logger.debug("ChatView deleteMessage")
-        Task {
-            logger.debug("ChatView deleteMessage: in Task")
-            do {
-                if let di = deletingItem {
-                    var deletedItem: ChatItem
-                    var toItem: ChatItem?
-                    if case .cidmBroadcast = mode,
-                       let (groupInfo, groupMember) = di.memberToModerate(chat.chatInfo) {
-                        (deletedItem, toItem) = try await apiDeleteMemberChatItem(
-                            groupId: groupInfo.apiId,
-                            groupMemberId: groupMember.groupMemberId,
-                            itemId: di.id
-                        )
-                    } else {
-                        (deletedItem, toItem) = try await apiDeleteChatItem(
-                            type: chat.chatInfo.chatType,
-                            id: chat.chatInfo.apiId,
-                            itemId: di.id,
-                            mode: mode
-                        )
-                    }
-                    DispatchQueue.main.async {
-                        deletingItem = nil
-                        if let toItem = toItem {
-                            _ = chatModel.upsertChatItem(chat.chatInfo, toItem)
-                        } else {
-                            chatModel.removeChatItem(chat.chatInfo, deletedItem)
-                        }
-                    }
-                }
-            } catch {
-                logger.error("ChatView.deleteMessage error: \(error.localizedDescription)")
-            }
-        }
-    }
 }
 
 @ViewBuilder func toggleNtfsButton(_ chat: Chat) -> some View {

apps/ios/Shared/Views/Chat/ComposeMessage/ComposeView.swift

@@ -592,12 +592,14 @@ struct ComposeView: View {
             EmptyView()
         case let .quotedItem(chatItem: quotedItem):
             ContextItemView(
+                chat: chat,
                 contextItem: quotedItem,
                 contextIcon: "arrowshape.turn.up.left",
                 cancelContextItem: { composeState = composeState.copy(contextItem: .noContextItem) }
             )
         case let .editingItem(chatItem: editingItem):
             ContextItemView(
+                chat: chat,
                 contextItem: editingItem,
                 contextIcon: "pencil",
                 cancelContextItem: { clearState() }

apps/ios/Shared/Views/Chat/ComposeMessage/ContextItemView.swift

@@ -11,6 +11,7 @@ import SimpleXChat
 
 struct ContextItemView: View {
     @Environment(\.colorScheme) var colorScheme
+    @ObservedObject var chat: Chat
     let contextItem: ChatItem
     let contextIcon: String
     let cancelContextItem: () -> Void
@@ -48,6 +49,7 @@ struct ContextItemView: View {
 
     private func msgContentView(lines: Int) -> some View {
         MsgContentView(
+            chat: chat,
             text: contextItem.text,
             formattedText: contextItem.formattedText
         )
@@ -59,6 +61,6 @@ struct ContextItemView: View {
 struct ContextItemView_Previews: PreviewProvider {
     static var previews: some View {
         let contextItem: ChatItem = ChatItem.getSample(1, .directSnd, .now, "hello")
-        return ContextItemView(contextItem: contextItem, contextIcon: "pencil.circle", cancelContextItem: {})
+        return ContextItemView(chat: Chat.sampleData, contextItem: contextItem, contextIcon: "pencil.circle", cancelContextItem: {})
     }
 }

apps/ios/Shared/Views/Chat/Group/AddGroupMembersView.swift

@@ -144,7 +144,7 @@ struct AddGroupMembersViewCommon: View {
             do {
                 for contactId in selectedContacts {
                     let member = try await apiAddMember(groupInfo.groupId, contactId, selectedRole)
-                    await MainActor.run { _ = ChatModel.shared.upsertGroupMember(groupInfo, member) }
+                    await MainActor.run { _ = chatModel.upsertGroupMember(groupInfo, member) }
                 }
                 addedMembersCb(selectedContacts)
             } catch {

apps/ios/Shared/Views/Chat/Group/GroupChatInfoView.swift

@@ -15,7 +15,7 @@ struct GroupChatInfoView: View {
     @EnvironmentObject var chatModel: ChatModel
     @Environment(\.dismiss) var dismiss: DismissAction
     @ObservedObject var chat: Chat
-    @State var groupInfo: GroupInfo
+    @Binding var groupInfo: GroupInfo
     @ObservedObject private var alertManager = AlertManager.shared
     @State private var alert: GroupChatInfoViewAlert? = nil
     @State private var groupLink: String?
@@ -35,14 +35,30 @@ struct GroupChatInfoView: View {
         case leaveGroupAlert
         case cantInviteIncognitoAlert
         case largeGroupReceiptsDisabled
+        case blockMemberAlert(mem: GroupMember)
+        case unblockMemberAlert(mem: GroupMember)
+        case removeMemberAlert(mem: GroupMember)
+        case error(title: LocalizedStringKey, error: LocalizedStringKey)
 
-        var id: GroupChatInfoViewAlert { get { self } }
+        var id: String {
+            switch self {
+            case .deleteGroupAlert: return "deleteGroupAlert"
+            case .clearChatAlert: return "clearChatAlert"
+            case .leaveGroupAlert: return "leaveGroupAlert"
+            case .cantInviteIncognitoAlert: return "cantInviteIncognitoAlert"
+            case .largeGroupReceiptsDisabled: return "largeGroupReceiptsDisabled"
+            case let .blockMemberAlert(mem): return "blockMemberAlert \(mem.groupMemberId)"
+            case let .unblockMemberAlert(mem): return "unblockMemberAlert \(mem.groupMemberId)"
+            case let .removeMemberAlert(mem): return "removeMemberAlert \(mem.groupMemberId)"
+            case let .error(title, _): return "error \(title)"
+            }
+        }
     }
 
     var body: some View {
         NavigationView {
             let members = chatModel.groupMembers
-                .filter { $0.memberStatus != .memLeft && $0.memberStatus != .memRemoved }
+                .filter { m in let status = m.wrapped.memberStatus; return status != .memLeft && status != .memRemoved }
                 .sorted { $0.displayName.lowercased() < $1.displayName.lowercased() }
 
             List {
@@ -57,7 +73,7 @@ struct GroupChatInfoView: View {
                         addOrEditWelcomeMessage()
                     }
                     groupPreferencesButton($groupInfo)
-                    if members.filter({ $0.memberCurrent }).count <= SMALL_GROUPS_RCPS_MEM_LIMIT {
+                    if members.filter({ $0.wrapped.memberCurrent }).count <= SMALL_GROUPS_RCPS_MEM_LIMIT {
                         sendReceiptsOption()
                     } else {
                         sendReceiptsOptionDisabled()
@@ -84,17 +100,17 @@ struct GroupChatInfoView: View {
                             .padding(.leading, 8)
                     }
                     let s = searchText.trimmingCharacters(in: .whitespaces).localizedLowercase
-                    let filteredMembers = s == "" ? members : members.filter { $0.chatViewName.localizedLowercase.contains(s) }
-                    memberView(groupInfo.membership, user: true)
+                    let filteredMembers = s == "" ? members : members.filter { $0.wrapped.chatViewName.localizedLowercase.contains(s) }
+                    MemberRowView(groupInfo: groupInfo, groupMember: GMember(groupInfo.membership), user: true, alert: $alert)
                     ForEach(filteredMembers) { member in
                         ZStack {
                             NavigationLink {
-                                memberInfoView(member.groupMemberId)
+                                memberInfoView(member)
                             } label: {
                                 EmptyView()
                             }
                             .opacity(0)
-                            memberView(member)
+                            MemberRowView(groupInfo: groupInfo, groupMember: member, alert: $alert)
                         }
                     }
                 }
@@ -126,6 +142,10 @@ struct GroupChatInfoView: View {
             case .leaveGroupAlert: return leaveGroupAlert()
             case .cantInviteIncognitoAlert: return cantInviteIncognitoAlert()
             case .largeGroupReceiptsDisabled: return largeGroupReceiptsDisabledAlert()
+            case let .blockMemberAlert(mem): return blockMemberAlert(groupInfo, mem)
+            case let .unblockMemberAlert(mem): return unblockMemberAlert(groupInfo, mem)
+            case let .removeMemberAlert(mem): return removeMemberAlert(mem)
+            case let .error(title, error): return Alert(title: Text(title), message: Text(error))
             }
         }
         .onAppear {
@@ -174,7 +194,7 @@ struct GroupChatInfoView: View {
                     Task {
                         let groupMembers = await apiListMembers(groupInfo.groupId)
                         await MainActor.run {
-                            ChatModel.shared.groupMembers = groupMembers
+                            chatModel.groupMembers = groupMembers.map { GMember.init($0) }
                         }
                     }
                 }
@@ -183,44 +203,79 @@ struct GroupChatInfoView: View {
         }
     }
 
-    private func memberView(_ member: GroupMember, user: Bool = false) -> some View {
-        HStack{
-            ProfileImage(imageStr: member.image)
-                .frame(width: 38, height: 38)
-                .padding(.trailing, 2)
-            // TODO server connection status
-            VStack(alignment: .leading) {
-                let t = Text(member.chatViewName).foregroundColor(member.memberIncognito ? .indigo : .primary)
-                (member.verified ? memberVerifiedShield + t : t)
-                    .lineLimit(1)
-                let s = Text(member.memberStatus.shortText)
-                (user ? Text ("you: ") + s : s)
-                    .lineLimit(1)
-                    .font(.caption)
-                    .foregroundColor(.secondary)
+    private struct MemberRowView: View {
+        var groupInfo: GroupInfo
+        @ObservedObject var groupMember: GMember
+        var user: Bool = false
+        @Binding var alert: GroupChatInfoViewAlert?
+
+        var body: some View {
+            let member = groupMember.wrapped
+            let v = HStack{
+                ProfileImage(imageStr: member.image)
+                    .frame(width: 38, height: 38)
+                    .padding(.trailing, 2)
+                // TODO server connection status
+                VStack(alignment: .leading) {
+                    let t = Text(member.chatViewName).foregroundColor(member.memberIncognito ? .indigo : .primary)
+                    (member.verified ? memberVerifiedShield + t : t)
+                        .lineLimit(1)
+                    let s = Text(member.memberStatus.shortText)
+                    (user ? Text ("you: ") + s : s)
+                        .lineLimit(1)
+                        .font(.caption)
+                        .foregroundColor(.secondary)
+                }
+                Spacer()
+                let role = member.memberRole
+                if role == .owner || role == .admin {
+                    Text(member.memberRole.text)
+                        .foregroundColor(.secondary)
+                }
             }
-            Spacer()
-            let role = member.memberRole
-            if role == .owner || role == .admin {
-                Text(member.memberRole.text)
-                    .foregroundColor(.secondary)
+
+            if user {
+                v
+            } else if member.canBeRemoved(groupInfo: groupInfo) {
+                removeSwipe(member, blockSwipe(member, v))
+            } else {
+                blockSwipe(member, v)
+            }
+        }
+
+        private func blockSwipe<V: View>(_ member: GroupMember, _ v: V) -> some View {
+            v.swipeActions(edge: .leading) {
+                if member.memberSettings.showMessages {
+                    Button {
+                        alert = .blockMemberAlert(mem: member)
+                    } label: {
+                        Label("Block member", systemImage: "hand.raised").foregroundColor(.secondary)
+                    }
+                } else {
+                    Button {
+                        alert = .unblockMemberAlert(mem: member)
+                    } label: {
+                        Label("Unblock member", systemImage: "hand.raised.slash").foregroundColor(.accentColor)
+                    }
+                }
+            }
+        }
+
+        private func removeSwipe<V: View>(_ member: GroupMember, _ v: V) -> some View {
+            v.swipeActions(edge: .trailing) {
+                Button(role: .destructive) {
+                    alert = .removeMemberAlert(mem: member)
+                } label: {
+                    Label("Remove member", systemImage: "trash")
+                        .foregroundColor(Color.red)
+                }
             }
         }
     }
 
-    private var memberVerifiedShield: Text {
-        (Text(Image(systemName: "checkmark.shield")) + Text(" "))
-            .font(.caption)
-            .baselineOffset(2)
-            .kerning(-2)
-            .foregroundColor(.secondary)
-    }
-
-    @ViewBuilder private func memberInfoView(_ groupMemberId: Int64?) -> some View {
-        if let mId = groupMemberId, let member = chatModel.groupMembers.first(where: { $0.groupMemberId == mId }) {
-            GroupMemberInfoView(groupInfo: groupInfo, member: member)
-                .navigationBarHidden(false)
-        }
+    private func memberInfoView(_ groupMember: GMember) -> some View {
+        GroupMemberInfoView(groupInfo: groupInfo, groupMember: groupMember)
+            .navigationBarHidden(false)
     }
 
     private func groupLinkButton() -> some View {
@@ -381,6 +436,28 @@ struct GroupChatInfoView: View {
             alert = .largeGroupReceiptsDisabled
         }
     }
+
+    private func removeMemberAlert(_ mem: GroupMember) -> Alert {
+        Alert(
+            title: Text("Remove member?"),
+            message: Text("Member will be removed from group - this cannot be undone!"),
+            primaryButton: .destructive(Text("Remove")) {
+                Task {
+                    do {
+                        let updatedMember = try await apiRemoveMember(groupInfo.groupId, mem.groupMemberId)
+                        await MainActor.run {
+                            _ = chatModel.upsertGroupMember(groupInfo, updatedMember)
+                        }
+                    } catch let error {
+                        logger.error("apiRemoveMember error: \(responseError(error))")
+                        let a = getErrorAlert(error, "Error removing member")
+                        alert = .error(title: a.title, error: a.message)
+                    }
+                }
+            },
+            secondaryButton: .cancel()
+        )
+    }
 }
 
 func groupPreferencesButton(_ groupInfo: Binding<GroupInfo>, _ creatingGroup: Bool = false) -> some View {
@@ -402,6 +479,14 @@ func groupPreferencesButton(_ groupInfo: Binding<GroupInfo>, _ creatingGroup: Bo
     }
 }
 
+private var memberVerifiedShield: Text {
+    (Text(Image(systemName: "checkmark.shield")) + Text(" "))
+        .font(.caption)
+        .baselineOffset(2)
+        .kerning(-2)
+        .foregroundColor(.secondary)
+}
+
 func cantInviteIncognitoAlert() -> Alert {
     Alert(
         title: Text("Can't invite contacts!"),
@@ -418,6 +503,9 @@ func largeGroupReceiptsDisabledAlert() -> Alert {
 
 struct GroupChatInfoView_Previews: PreviewProvider {
     static var previews: some View {
-        GroupChatInfoView(chat: Chat(chatInfo: ChatInfo.sampleData.group, chatItems: []), groupInfo: GroupInfo.sampleData)
+        GroupChatInfoView(
+            chat: Chat(chatInfo: ChatInfo.sampleData.group, chatItems: []),
+            groupInfo: Binding.constant(GroupInfo.sampleData)
+        )
     }
 }

apps/ios/Shared/Views/Chat/Group/GroupMemberInfoView.swift

@@ -12,8 +12,8 @@ import SimpleXChat
 struct GroupMemberInfoView: View {
     @EnvironmentObject var chatModel: ChatModel
     @Environment(\.dismiss) var dismiss: DismissAction
-    var groupInfo: GroupInfo
-    @State var member: GroupMember
+    @State var groupInfo: GroupInfo
+    @ObservedObject var groupMember: GMember
     var navigation: Bool = false
     @State private var connectionStats: ConnectionStats? = nil
     @State private var connectionCode: String? = nil
@@ -25,6 +25,8 @@ struct GroupMemberInfoView: View {
     @State private var progressIndicator = false
 
     enum GroupMemberInfoViewAlert: Identifiable {
+        case blockMemberAlert(mem: GroupMember)
+        case unblockMemberAlert(mem: GroupMember)
         case removeMemberAlert(mem: GroupMember)
         case changeMemberRoleAlert(mem: GroupMember, role: GroupMemberRole)
         case switchAddressAlert
@@ -35,8 +37,10 @@ struct GroupMemberInfoView: View {
 
         var id: String {
             switch self {
-            case .removeMemberAlert: return "removeMemberAlert"
-            case let .changeMemberRoleAlert(_, role): return "changeMemberRoleAlert \(role.rawValue)"
+            case let .blockMemberAlert(mem): return "blockMemberAlert \(mem.groupMemberId)"
+            case let .unblockMemberAlert(mem): return "unblockMemberAlert \(mem.groupMemberId)"
+            case let .removeMemberAlert(mem): return "removeMemberAlert \(mem.groupMemberId)"
+            case let .changeMemberRoleAlert(mem, role): return "changeMemberRoleAlert \(mem.groupMemberId) \(role.rawValue)"
             case .switchAddressAlert: return "switchAddressAlert"
             case .abortSwitchAddressAlert: return "abortSwitchAddressAlert"
             case .syncConnectionForceAlert: return "syncConnectionForceAlert"
@@ -66,6 +70,7 @@ struct GroupMemberInfoView: View {
     private func groupMemberInfoView() -> some View {
         ZStack {
             VStack {
+                let member = groupMember.wrapped
                 List {
                     groupMemberInfoHeader(member)
                         .listRowBackground(Color.clear)
@@ -159,9 +164,14 @@ struct GroupMemberInfoView: View {
                         }
                     }
 
-                    if member.canBeRemoved(groupInfo: groupInfo) {
-                        Section {
-                            removeMemberButton(member)
+                    Section {
+                        if member.memberSettings.showMessages {
+                            blockMemberButton(member)
+                        } else {
+                            unblockMemberButton(member)
+                        }
+                        if member.canBeRemoved(groupInfo: groupInfo) {
+                                removeMemberButton(member)
                         }
                     }
 
@@ -182,7 +192,7 @@ struct GroupMemberInfoView: View {
                     do {
                         let (_, stats) = try apiGroupMemberInfo(groupInfo.apiId, member.groupMemberId)
                         let (mem, code) = member.memberActive ? try apiGetGroupMemberCode(groupInfo.apiId, member.groupMemberId) : (member, nil)
-                        member = mem
+                        _ = chatModel.upsertGroupMember(groupInfo, mem)
                         connectionStats = stats
                         connectionCode = code
                     } catch let error {
@@ -190,15 +200,20 @@ struct GroupMemberInfoView: View {
                     }
                     justOpened = false
                 }
-                .onChange(of: newRole) { _ in
+                .onChange(of: newRole) { newRole in
                     if newRole != member.memberRole {
                         alert = .changeMemberRoleAlert(mem: member, role: newRole)
                     }
                 }
+                .onChange(of: member.memberRole) { role in
+                    newRole = role
+                }
             }
             .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .top)
             .alert(item: $alert) { alertItem in
                 switch(alertItem) {
+                case let .blockMemberAlert(mem): return blockMemberAlert(groupInfo, mem)
+                case let .unblockMemberAlert(mem): return unblockMemberAlert(groupInfo, mem)
                 case let .removeMemberAlert(mem): return removeMemberAlert(mem)
                 case let .changeMemberRoleAlert(mem, _): return changeMemberRoleAlert(mem)
                 case .switchAddressAlert: return switchAddressAlert(switchMemberAddress)
@@ -263,7 +278,7 @@ struct GroupMemberInfoView: View {
             progressIndicator = true
             Task {
                 do {
-                    let memberContact = try await apiCreateMemberContact(groupInfo.apiId, member.groupMemberId)
+                    let memberContact = try await apiCreateMemberContact(groupInfo.apiId, groupMember.groupMemberId)
                     await MainActor.run {
                         progressIndicator = false
                         chatModel.addChat(Chat(chatInfo: .direct(contact: memberContact)))
@@ -321,20 +336,20 @@ struct GroupMemberInfoView: View {
     }
 
     private func verifyCodeButton(_ code: String) -> some View {
-        NavigationLink {
+        let member = groupMember.wrapped
+        return NavigationLink {
             VerifyCodeView(
                 displayName: member.displayName,
                 connectionCode: code,
                 connectionVerified: member.verified,
                 verify: { code in
+                    var member = groupMember.wrapped
                     if let r = apiVerifyGroupMember(member.groupId, member.groupMemberId, connectionCode: code) {
                         let (verified, existingCode) = r
                         let connCode = verified ? SecurityCode(securityCode: existingCode, verifiedAt: .now) : nil
                         connectionCode = existingCode
                         member.activeConn?.connectionCode = connCode
-                        if let i = chatModel.groupMembers.firstIndex(where: { $0.groupMemberId == member.groupMemberId }) {
-                            chatModel.groupMembers[i].activeConn?.connectionCode = connCode
-                        }
+                        _ = chatModel.upsertGroupMember(groupInfo, member)
                         return r
                     }
                     return nil
@@ -368,12 +383,29 @@ struct GroupMemberInfoView: View {
         }
     }
 
+    private func blockMemberButton(_ mem: GroupMember) -> some View {
+        Button(role: .destructive) {
+            alert = .blockMemberAlert(mem: mem)
+        } label: {
+            Label("Block member", systemImage: "hand.raised")
+                .foregroundColor(.red)
+        }
+    }
+
+    private func unblockMemberButton(_ mem: GroupMember) -> some View {
+        Button {
+            alert = .unblockMemberAlert(mem: mem)
+        } label: {
+            Label("Unblock member", systemImage: "hand.raised.slash")
+        }
+    }
+
     private func removeMemberButton(_ mem: GroupMember) -> some View {
         Button(role: .destructive) {
             alert = .removeMemberAlert(mem: mem)
         } label: {
             Label("Remove member", systemImage: "trash")
-                .foregroundColor(Color.red)
+                .foregroundColor(.red)
         }
     }
 
@@ -409,7 +441,6 @@ struct GroupMemberInfoView: View {
                     do {
                         let updatedMember = try await apiMemberRole(groupInfo.groupId, mem.groupMemberId, newRole)
                         await MainActor.run {
-                            member = updatedMember
                             _ = chatModel.upsertGroupMember(groupInfo, updatedMember)
                         }
                         
@@ -430,10 +461,10 @@ struct GroupMemberInfoView: View {
     private func switchMemberAddress() {
         Task {
             do {
-                let stats = try apiSwitchGroupMember(groupInfo.apiId, member.groupMemberId)
+                let stats = try apiSwitchGroupMember(groupInfo.apiId, groupMember.groupMemberId)
                 connectionStats = stats
                 await MainActor.run {
-                    chatModel.updateGroupMemberConnectionStats(groupInfo, member, stats)
+                    chatModel.updateGroupMemberConnectionStats(groupInfo, groupMember.wrapped, stats)
                     dismiss()
                 }
             } catch let error {
@@ -449,10 +480,10 @@ struct GroupMemberInfoView: View {
     private func abortSwitchMemberAddress() {
         Task {
             do {
-                let stats = try apiAbortSwitchGroupMember(groupInfo.apiId, member.groupMemberId)
+                let stats = try apiAbortSwitchGroupMember(groupInfo.apiId, groupMember.groupMemberId)
                 connectionStats = stats
                 await MainActor.run {
-                    chatModel.updateGroupMemberConnectionStats(groupInfo, member, stats)
+                    chatModel.updateGroupMemberConnectionStats(groupInfo, groupMember.wrapped, stats)
                 }
             } catch let error {
                 logger.error("abortSwitchMemberAddress apiAbortSwitchGroupMember error: \(responseError(error))")
@@ -467,7 +498,7 @@ struct GroupMemberInfoView: View {
     private func syncMemberConnection(force: Bool) {
         Task {
             do {
-                let (mem, stats) = try apiSyncGroupMemberRatchet(groupInfo.apiId, member.groupMemberId, force)
+                let (mem, stats) = try apiSyncGroupMemberRatchet(groupInfo.apiId, groupMember.groupMemberId, force)
                 connectionStats = stats
                 await MainActor.run {
                     chatModel.updateGroupMemberConnectionStats(groupInfo, mem, stats)
@@ -484,11 +515,54 @@ struct GroupMemberInfoView: View {
     }
 }
 
+func blockMemberAlert(_ gInfo: GroupInfo, _ mem: GroupMember) -> Alert {
+    Alert(
+        title: Text("Block member?"),
+        message: Text("All new messages from \(mem.chatViewName) will be hidden!"),
+        primaryButton: .destructive(Text("Block")) {
+            toggleShowMemberMessages(gInfo, mem, false)
+        },
+        secondaryButton: .cancel()
+    )
+}
+
+func unblockMemberAlert(_ gInfo: GroupInfo, _ mem: GroupMember) -> Alert {
+    Alert(
+        title: Text("Unblock member?"),
+        message: Text("Messages from \(mem.chatViewName) will be shown!"),
+        primaryButton: .default(Text("Unblock")) {
+            toggleShowMemberMessages(gInfo, mem, true)
+        },
+        secondaryButton: .cancel()
+    )
+}
+
+func toggleShowMemberMessages(_ gInfo: GroupInfo, _ member: GroupMember, _ showMessages: Bool) {
+    var memberSettings = member.memberSettings
+    memberSettings.showMessages = showMessages
+    updateMemberSettings(gInfo, member, memberSettings)
+}
+
+func updateMemberSettings(_ gInfo: GroupInfo, _ member: GroupMember, _ memberSettings: GroupMemberSettings) {
+    Task {
+        do {
+            try await apiSetMemberSettings(gInfo.groupId, member.groupMemberId, memberSettings)
+            await MainActor.run {
+                var mem = member
+                mem.memberSettings = memberSettings
+                _ = ChatModel.shared.upsertGroupMember(gInfo, mem)
+            }
+        } catch let error {
+            logger.error("apiSetMemberSettings error \(responseError(error))")
+        }
+    }
+}
+
 struct GroupMemberInfoView_Previews: PreviewProvider {
     static var previews: some View {
         GroupMemberInfoView(
             groupInfo: GroupInfo.sampleData,
-            member: GroupMember.sampleData
+            groupMember: GMember.sampleData
         )
     }
 }

apps/ios/Shared/Views/ChatList/ChatListView.swift

@@ -29,7 +29,7 @@ struct ChatListView: View {
         ZStack(alignment: .topLeading) {
             NavStackCompat(
                 isActive: Binding(
-                    get: { ChatModel.shared.chatId != nil },
+                    get: { chatModel.chatId != nil },
                     set: { _ in }
                 ),
                 destination: chatView

apps/ios/Shared/Views/ChatList/ContactConnectionInfo.swift

@@ -119,7 +119,7 @@ struct ContactConnectionInfo: View {
                 if let conn = try await apiSetConnectionAlias(connId: contactConnection.pccConnId, localAlias: localAlias) {
                     await MainActor.run {
                         contactConnection = conn
-                        ChatModel.shared.updateContactConnection(conn)
+                        m.updateContactConnection(conn)
                         dismiss()
                     }
                 }

apps/ios/Shared/Views/Helpers/VideoPlayerView.swift

@@ -52,7 +52,6 @@ struct VideoPlayerView: UIViewRepresentable {
         var timeObserver: Any? = nil
 
         deinit {
-            print("deinit coordinator of VideoPlayer")
             if let timeObserver = timeObserver {
                 NotificationCenter.default.removeObserver(timeObserver)
             }

apps/ios/Shared/Views/NewChat/AddContactView.swift

@@ -48,7 +48,7 @@ struct AddContactView: View {
                        let conn = try await apiSetConnectionIncognito(connId: contactConn.pccConnId, incognito: incognito) {
                         await MainActor.run {
                             contactConnection = conn
-                            ChatModel.shared.updateContactConnection(conn)
+                            chatModel.updateContactConnection(conn)
                         }
                     }
                 } catch {

apps/ios/Shared/Views/NewChat/AddGroupView.swift

@@ -189,7 +189,7 @@ struct AddGroupView: View {
             Task {
                 let groupMembers = await apiListMembers(gInfo.groupId)
                 await MainActor.run {
-                    ChatModel.shared.groupMembers = groupMembers
+                    m.groupMembers = groupMembers.map { GMember.init($0) }
                 }
             }
             let c = Chat(chatInfo: .group(groupInfo: gInfo), chatItems: [])

apps/ios/Shared/Views/UserSettings/PrivacySettings.swift

@@ -119,7 +119,7 @@ struct PrivacySettings: View {
                     Text("Send delivery receipts to")
                 } footer: {
                     VStack(alignment: .leading) {
-                        Text("These settings are for your current profile **\(ChatModel.shared.currentUser?.displayName ?? "")**.")
+                        Text("These settings are for your current profile **\(m.currentUser?.displayName ?? "")**.")
                         Text("They can be overridden in contact and group settings.")
                     }
                     .frame(maxWidth: .infinity, alignment: .leading)

apps/ios/SimpleXChat/APITypes.swift

@@ -73,6 +73,7 @@ public enum ChatCommand {
     case apiGetNetworkConfig
     case reconnectAllServers
     case apiSetChatSettings(type: ChatType, id: Int64, chatSettings: ChatSettings)
+    case apiSetMemberSettings(groupId: Int64, groupMemberId: Int64, memberSettings: GroupMemberSettings)
     case apiContactInfo(contactId: Int64)
     case apiGroupMemberInfo(groupId: Int64, groupMemberId: Int64)
     case apiSwitchContact(contactId: Int64)
@@ -206,6 +207,7 @@ public enum ChatCommand {
             case .apiGetNetworkConfig: return "/network"
             case .reconnectAllServers: return "/reconnect"
             case let .apiSetChatSettings(type, id, chatSettings): return "/_settings \(ref(type, id)) \(encodeJSON(chatSettings))"
+            case let .apiSetMemberSettings(groupId, groupMemberId, memberSettings): return "/_member settings #\(groupId) \(groupMemberId) \(encodeJSON(memberSettings))"
             case let .apiContactInfo(contactId): return "/_info @\(contactId)"
             case let .apiGroupMemberInfo(groupId, groupMemberId): return "/_info #\(groupId) \(groupMemberId)"
             case let .apiSwitchContact(contactId): return "/_switch @\(contactId)"
@@ -341,6 +343,7 @@ public enum ChatCommand {
             case .apiGetNetworkConfig: return "apiGetNetworkConfig"
             case .reconnectAllServers: return "reconnectAllServers"
             case .apiSetChatSettings: return "apiSetChatSettings"
+            case .apiSetMemberSettings: return "apiSetMemberSettings"
             case .apiContactInfo: return "apiContactInfo"
             case .apiGroupMemberInfo: return "apiGroupMemberInfo"
             case .apiSwitchContact: return "apiSwitchContact"
@@ -520,6 +523,7 @@ public enum ChatResponse: Decodable, Error {
     case acceptingContactRequest(user: UserRef, contact: Contact)
     case contactRequestRejected(user: UserRef)
     case contactUpdated(user: UserRef, toContact: Contact)
+    case groupMemberUpdated(user: UserRef, groupInfo: GroupInfo, fromMember: GroupMember, toMember: GroupMember)
     // TODO remove events below
     case contactsSubscribed(server: String, contactRefs: [ContactRef])
     case contactsDisconnected(server: String, contactRefs: [ContactRef])
@@ -542,6 +546,7 @@ public enum ChatResponse: Decodable, Error {
     case groupCreated(user: UserRef, groupInfo: GroupInfo)
     case sentGroupInvitation(user: UserRef, groupInfo: GroupInfo, contact: Contact, member: GroupMember)
     case userAcceptedGroupSent(user: UserRef, groupInfo: GroupInfo, hostContact: Contact?)
+    case groupLinkConnecting(user: UserRef, groupInfo: GroupInfo, hostMember: GroupMember)
     case userDeletedMember(user: UserRef, groupInfo: GroupInfo, member: GroupMember)
     case leftMemberUser(user: UserRef, groupInfo: GroupInfo)
     case groupMembers(user: UserRef, group: Group)
@@ -669,6 +674,7 @@ public enum ChatResponse: Decodable, Error {
             case .acceptingContactRequest: return "acceptingContactRequest"
             case .contactRequestRejected: return "contactRequestRejected"
             case .contactUpdated: return "contactUpdated"
+            case .groupMemberUpdated: return "groupMemberUpdated"
             case .contactsSubscribed: return "contactsSubscribed"
             case .contactsDisconnected: return "contactsDisconnected"
             case .contactSubSummary: return "contactSubSummary"
@@ -688,6 +694,7 @@ public enum ChatResponse: Decodable, Error {
             case .groupCreated: return "groupCreated"
             case .sentGroupInvitation: return "sentGroupInvitation"
             case .userAcceptedGroupSent: return "userAcceptedGroupSent"
+            case .groupLinkConnecting: return "groupLinkConnecting"
             case .userDeletedMember: return "userDeletedMember"
             case .leftMemberUser: return "leftMemberUser"
             case .groupMembers: return "groupMembers"
@@ -815,6 +822,7 @@ public enum ChatResponse: Decodable, Error {
             case let .acceptingContactRequest(u, contact): return withUser(u, String(describing: contact))
             case .contactRequestRejected: return noDetails
             case let .contactUpdated(u, toContact): return withUser(u, String(describing: toContact))
+            case let .groupMemberUpdated(u, groupInfo, fromMember, toMember): return withUser(u, "groupInfo: \(groupInfo)\nfromMember: \(fromMember)\ntoMember: \(toMember)")
             case let .contactsSubscribed(server, contactRefs): return "server: \(server)\ncontacts:\n\(String(describing: contactRefs))"
             case let .contactsDisconnected(server, contactRefs): return "server: \(server)\ncontacts:\n\(String(describing: contactRefs))"
             case let .contactSubSummary(u, contactSubscriptions): return withUser(u, String(describing: contactSubscriptions))
@@ -834,6 +842,7 @@ public enum ChatResponse: Decodable, Error {
             case let .groupCreated(u, groupInfo): return withUser(u, String(describing: groupInfo))
             case let .sentGroupInvitation(u, groupInfo, contact, member): return withUser(u, "groupInfo: \(groupInfo)\ncontact: \(contact)\nmember: \(member)")
             case let .userAcceptedGroupSent(u, groupInfo, hostContact): return withUser(u, "groupInfo: \(groupInfo)\nhostContact: \(String(describing: hostContact))")
+            case let .groupLinkConnecting(u, groupInfo, hostMember): return withUser(u, "groupInfo: \(groupInfo)\nhostMember: \(String(describing: hostMember))")
             case let .userDeletedMember(u, groupInfo, member): return withUser(u, "groupInfo: \(groupInfo)\nmember: \(member)")
             case let .leftMemberUser(u, groupInfo): return withUser(u, String(describing: groupInfo))
             case let .groupMembers(u, group): return withUser(u, String(describing: group))

apps/ios/SimpleXChat/ChatTypes.swift

@@ -422,8 +422,8 @@ public enum CustomTimeUnit {
 
 
 public func timeText(_ seconds: Int?) -> String {
-    guard let seconds = seconds else { return "off" }
-    if seconds == 0 { return "0 sec" }
+    guard let seconds = seconds else { return NSLocalizedString("off", comment: "time to disappear") }
+    if seconds == 0 { return NSLocalizedString("0 sec", comment: "time to disappear") }
     return CustomTimeUnit.toText(seconds: seconds)
 }
 
@@ -1867,8 +1867,8 @@ public struct GroupMember: Identifiable, Decodable {
     )
 }
 
-public struct GroupMemberSettings: Decodable {
-    var showMessages: Bool
+public struct GroupMemberSettings: Codable {
+    public var showMessages: Bool
 }
 
 public struct GroupMemberRef: Decodable {
@@ -2090,7 +2090,7 @@ public struct ChatItem: Identifiable, Decodable {
 
     public var memberConnected: GroupMember? {
         switch chatDir {
-        case .groupRcv(let groupMember):
+        case let .groupRcv(groupMember):
             switch content {
             case .rcvGroupEvent(rcvGroupEvent: .memberConnected): return groupMember
             default: return nil
@@ -2099,6 +2099,35 @@ public struct ChatItem: Identifiable, Decodable {
         }
     }
 
+    public var mergeCategory: CIMergeCategory? {
+        switch content {
+        case .rcvChatFeature: .chatFeature
+        case .sndChatFeature: .chatFeature
+        case .rcvGroupFeature: .chatFeature
+        case .sndGroupFeature: .chatFeature
+        case let.rcvGroupEvent(event):
+            switch event {
+            case .userRole: nil
+            case .userDeleted: nil
+            case .groupDeleted: nil
+            case .memberCreatedContact: nil
+            default: .rcvGroupEvent
+            }
+        case let .sndGroupEvent(event):
+            switch event {
+            case .userRole: nil
+            case .userLeft: nil
+            default: .sndGroupEvent
+            }
+        default:
+            if meta.itemDeleted == nil {
+                nil
+            } else {
+                chatDir.sent ? .sndItemDeleted : .rcvItemDeleted
+            }
+        }
+    }
+
     private var showNtfDir: Bool {
         return !chatDir.sent
     }
@@ -2176,7 +2205,7 @@ public struct ChatItem: Identifiable, Decodable {
     public var memberDisplayName: String? {
         get {
             if case let .groupRcv(groupMember) = chatDir {
-                return groupMember.displayName
+                return groupMember.chatViewName
             } else {
                 return nil
             }
@@ -2330,6 +2359,15 @@ public struct ChatItem: Identifiable, Decodable {
     }
 }
 
+public enum CIMergeCategory {
+    case memberConnected
+    case rcvGroupEvent
+    case sndGroupEvent
+    case sndItemDeleted
+    case rcvItemDeleted
+    case chatFeature
+}
+
 public enum CIDirection: Decodable {
     case directSnd
     case directRcv
@@ -2508,11 +2546,13 @@ public enum SndCIStatusProgress: String, Decodable {
 
 public enum CIDeleted: Decodable {
     case deleted(deletedTs: Date?)
+    case blocked(deletedTs: Date?)
     case moderated(deletedTs: Date?, byGroupMember: GroupMember)
 
     var id: String {
         switch self {
         case .deleted: return  "deleted"
+        case .blocked: return  "blocked"
         case .moderated: return "moderated"
         }
     }
@@ -2530,8 +2570,8 @@ protocol ItemContent {
 public enum CIContent: Decodable, ItemContent {
     case sndMsgContent(msgContent: MsgContent)
     case rcvMsgContent(msgContent: MsgContent)
-    case sndDeleted(deleteMode: CIDeleteMode)
-    case rcvDeleted(deleteMode: CIDeleteMode)
+    case sndDeleted(deleteMode: CIDeleteMode) // legacy - since v4.3.0 itemDeleted field is used
+    case rcvDeleted(deleteMode: CIDeleteMode) // legacy - since v4.3.0 itemDeleted field is used
     case sndCall(status: CICallStatus, duration: Int)
     case rcvCall(status: CICallStatus, duration: Int)
     case rcvIntegrityError(msgError: MsgErrorType)

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt

@@ -137,6 +137,7 @@ object ChatModel {
   fun getChat(id: String): Chat? = chats.toList().firstOrNull { it.id == id }
   fun getContactChat(contactId: Long): Chat? = chats.toList().firstOrNull { it.chatInfo is ChatInfo.Direct && it.chatInfo.apiId == contactId }
   fun getGroupChat(groupId: Long): Chat? = chats.toList().firstOrNull { it.chatInfo is ChatInfo.Group && it.chatInfo.apiId == groupId }
+  fun getGroupMember(groupMemberId: Long): GroupMember? = groupMembers.firstOrNull { it.groupMemberId == groupMemberId }
   private fun getChatIndex(id: String): Int = chats.toList().indexOfFirst { it.id == id }
   fun addChat(chat: Chat) = chats.add(index = 0, chat)
 
@@ -442,6 +443,78 @@ object ChatModel {
     }
   }
 
+  fun getChatItemIndexOrNull(cItem: ChatItem): Int? {
+    val reversedChatItems = chatItems.asReversed()
+    val index = reversedChatItems.indexOfFirst { it.id == cItem.id }
+    return if (index != -1) index else null
+  }
+
+  // this function analyses "connected" events and assumes that each member will be there only once
+  fun getConnectedMemberNames(cItem: ChatItem): Pair<Int, List<String>> {
+    var count = 0
+    val ns = mutableListOf<String>()
+    var idx = getChatItemIndexOrNull(cItem)
+    if (cItem.mergeCategory != null && idx != null) {
+      val reversedChatItems = chatItems.asReversed()
+      while (idx < reversedChatItems.size) {
+        val ci = reversedChatItems[idx]
+        if (ci.mergeCategory != cItem.mergeCategory) break
+        val m = ci.memberConnected
+        if (m != null) {
+          ns.add(m.displayName)
+        }
+        count++
+        idx++
+      }
+    }
+    return count to ns
+  }
+
+  // returns the index of the passed item and the next item (it has smaller index)
+  fun getNextChatItem(ci: ChatItem): Pair<Int?, ChatItem?> {
+    val i = getChatItemIndexOrNull(ci)
+    return if (i != null) {
+      val reversedChatItems = chatItems.asReversed()
+      i to if (i > 0) reversedChatItems[i - 1] else null
+    } else {
+      null to null
+    }
+  }
+
+  // returns the index of the first item in the same merged group (the first hidden item)
+  // and the previous visible item with another merge category
+  fun getPrevShownChatItem(ciIndex: Int?, ciCategory: CIMergeCategory?): Pair<Int?, ChatItem?> {
+    var i = ciIndex ?: return null to null
+    val reversedChatItems = chatItems.asReversed()
+    val fst = reversedChatItems.lastIndex
+    while (i < fst) {
+      i++
+      val ci = reversedChatItems[i]
+      if (ciCategory == null || ciCategory != ci.mergeCategory) {
+        return i - 1 to ci
+      }
+    }
+    return i to null
+  }
+
+  // returns the previous member in the same merge group and the count of members in this group
+  fun getPrevHiddenMember(member: GroupMember, range: IntRange): Pair<GroupMember?, Int> {
+    val reversedChatItems = chatItems.asReversed()
+    var prevMember: GroupMember? = null
+    val names: MutableSet<Long> = mutableSetOf()
+    for (i in range) {
+      val dir = reversedChatItems[i].chatDir
+      if (dir is CIDirection.GroupRcv) {
+        val m = dir.groupMember
+        if (prevMember == null && m.groupMemberId != member.groupMemberId) {
+          prevMember = m
+        }
+        names.add(m.groupMemberId)
+      }
+    }
+    return prevMember to names.size
+  }
+
 //  func popChat(_ id: String) {
 //    if let i = getChatIndex(id) {
 //      popChat_(i)
@@ -474,7 +547,7 @@ object ChatModel {
     }
     // update current chat
     return if (chatId.value == groupInfo.id) {
-      val memberIndex = groupMembers.indexOfFirst { it.id == member.id }
+      val memberIndex = groupMembers.indexOfFirst { it.groupMemberId == member.groupMemberId }
       if (memberIndex >= 0) {
         groupMembers[memberIndex] = member
         false
@@ -1090,11 +1163,11 @@ data class GroupMember (
   val groupMemberId: Long,
   val groupId: Long,
   val memberId: String,
-  var memberRole: GroupMemberRole,
-  var memberCategory: GroupMemberCategory,
-  var memberStatus: GroupMemberStatus,
-  var memberSettings: GroupMemberSettings,
-  var invitedBy: InvitedBy,
+  val memberRole: GroupMemberRole,
+  val memberCategory: GroupMemberCategory,
+  val memberStatus: GroupMemberStatus,
+  val memberSettings: GroupMemberSettings,
+  val invitedBy: InvitedBy,
   val localDisplayName: String,
   val memberProfile: LocalProfile,
   val memberContactId: Long? = null,
@@ -1467,7 +1540,7 @@ data class ChatItem (
         chatController.appPrefs.privacyEncryptLocalFiles.get()
 
   val memberDisplayName: String? get() =
-    if (chatDir is CIDirection.GroupRcv) chatDir.groupMember.displayName
+    if (chatDir is CIDirection.GroupRcv) chatDir.groupMember.chatViewName
     else null
 
   val isDeletedContent: Boolean get() =
@@ -1491,6 +1564,29 @@ data class ChatItem (
       else -> null
     }
 
+  val mergeCategory: CIMergeCategory?
+    get() = when (content) {
+      is CIContent.RcvChatFeature,
+      is CIContent.SndChatFeature,
+      is CIContent.RcvGroupFeature,
+      is CIContent.SndGroupFeature -> CIMergeCategory.ChatFeature
+      is CIContent.RcvGroupEventContent -> when (content.rcvGroupEvent) {
+        is RcvGroupEvent.UserRole, is RcvGroupEvent.UserDeleted, is RcvGroupEvent.GroupDeleted, is RcvGroupEvent.MemberCreatedContact -> null
+        else -> CIMergeCategory.RcvGroupEvent
+      }
+      is CIContent.SndGroupEventContent -> when (content.sndGroupEvent) {
+        is SndGroupEvent.UserRole, is SndGroupEvent.UserLeft -> null
+        else -> CIMergeCategory.SndGroupEvent
+      }
+      else -> {
+        if (meta.itemDeleted == null) {
+          null
+        } else {
+          if (chatDir.sent) CIMergeCategory.SndItemDeleted else CIMergeCategory.RcvItemDeleted
+        }
+      }
+    }
+
   fun memberToModerate(chatInfo: ChatInfo): Pair<GroupInfo, GroupMember>? {
     return if (chatInfo is ChatInfo.Group && chatDir is CIDirection.GroupRcv) {
       val m = chatInfo.groupInfo.membership
@@ -1695,6 +1791,15 @@ data class ChatItem (
   }
 }
 
+enum class CIMergeCategory {
+  MemberConnected,
+  RcvGroupEvent,
+  SndGroupEvent,
+  SndItemDeleted,
+  RcvItemDeleted,
+  ChatFeature,
+}
+
 @Serializable
 sealed class CIDirection {
   @Serializable @SerialName("directSnd") class DirectSnd: CIDirection()
@@ -1895,7 +2000,9 @@ sealed class CIContent: ItemContent {
 
   @Serializable @SerialName("sndMsgContent") class SndMsgContent(override val msgContent: MsgContent): CIContent()
   @Serializable @SerialName("rcvMsgContent") class RcvMsgContent(override val msgContent: MsgContent): CIContent()
+  // legacy - since v4.3.0 itemDeleted field is used
   @Serializable @SerialName("sndDeleted") class SndDeleted(val deleteMode: CIDeleteMode): CIContent() { override val msgContent: MsgContent? get() = null }
+  // legacy - since v4.3.0 itemDeleted field is used
   @Serializable @SerialName("rcvDeleted")  class RcvDeleted(val deleteMode: CIDeleteMode): CIContent() { override val msgContent: MsgContent? get() = null }
   @Serializable @SerialName("sndCall") class SndCall(val status: CICallStatus, val duration: Int): CIContent() { override val msgContent: MsgContent? get() = null }
   @Serializable @SerialName("rcvCall") class RcvCall(val status: CICallStatus, val duration: Int): CIContent() { override val msgContent: MsgContent? get() = null }

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/SimpleXAPI.kt

@@ -753,6 +753,9 @@ object ChatController {
     }
   }
 
+  suspend fun apiSetMemberSettings(groupId: Long, groupMemberId: Long, memberSettings: GroupMemberSettings): Boolean =
+    sendCommandOkResp(CC.ApiSetMemberSettings(groupId, groupMemberId, memberSettings))
+
   suspend fun apiContactInfo(contactId: Long): Pair<ConnectionStats, Profile?>? {
     val r = sendCmd(CC.APIContactInfo(contactId))
     if (r is CR.ContactInfo) return r.connectionStats to r.customUserProfile
@@ -1498,6 +1501,11 @@ object ChatController {
           chatModel.updateChatInfo(cInfo)
         }
       }
+      is CR.GroupMemberUpdated -> {
+        if (active(r.user)) {
+          chatModel.upsertGroupMember(r.groupInfo, r.toMember)
+        }
+      }
       is CR.ContactsMerged -> {
         if (active(r.user) && chatModel.hasChat(r.mergedContact.id)) {
           if (chatModel.chatId.value == r.mergedContact.id) {
@@ -1608,6 +1616,16 @@ object ChatController {
           chatModel.removeChat(r.hostContact.activeConn.id)
         }
       }
+      is CR.GroupLinkConnecting -> {
+        if (!active(r.user)) return
+
+        chatModel.updateGroup(r.groupInfo)
+        val hostConn = r.hostMember.activeConn
+        if (hostConn != null) {
+          chatModel.dismissConnReqView(hostConn.id)
+          chatModel.removeChat(hostConn.id)
+        }
+      }
       is CR.JoinedGroupMemberConnecting ->
         if (active(r.user)) {
           chatModel.upsertGroupMember(r.groupInfo, r.member)
@@ -1973,6 +1991,7 @@ sealed class CC {
   class APISetNetworkConfig(val networkConfig: NetCfg): CC()
   class APIGetNetworkConfig: CC()
   class APISetChatSettings(val type: ChatType, val id: Long, val chatSettings: ChatSettings): CC()
+  class ApiSetMemberSettings(val groupId: Long, val groupMemberId: Long, val memberSettings: GroupMemberSettings): CC()
   class APIContactInfo(val contactId: Long): CC()
   class APIGroupMemberInfo(val groupId: Long, val groupMemberId: Long): CC()
   class APISwitchContact(val contactId: Long): CC()
@@ -2096,6 +2115,7 @@ sealed class CC {
     is APISetNetworkConfig -> "/_network ${json.encodeToString(networkConfig)}"
     is APIGetNetworkConfig -> "/network"
     is APISetChatSettings -> "/_settings ${chatRef(type, id)} ${json.encodeToString(chatSettings)}"
+    is ApiSetMemberSettings -> "/_member settings #$groupId $groupMemberId ${json.encodeToString(memberSettings)}"
     is APIContactInfo -> "/_info @$contactId"
     is APIGroupMemberInfo -> "/_info #$groupId $groupMemberId"
     is APISwitchContact -> "/_switch @$contactId"
@@ -2212,9 +2232,10 @@ sealed class CC {
     is APITestProtoServer -> "testProtoServer"
     is APISetChatItemTTL -> "apiSetChatItemTTL"
     is APIGetChatItemTTL -> "apiGetChatItemTTL"
-    is APISetNetworkConfig -> "/apiSetNetworkConfig"
-    is APIGetNetworkConfig -> "/apiGetNetworkConfig"
-    is APISetChatSettings -> "/apiSetChatSettings"
+    is APISetNetworkConfig -> "apiSetNetworkConfig"
+    is APIGetNetworkConfig -> "apiGetNetworkConfig"
+    is APISetChatSettings -> "apiSetChatSettings"
+    is ApiSetMemberSettings -> "apiSetMemberSettings"
     is APIContactInfo -> "apiContactInfo"
     is APIGroupMemberInfo -> "apiGroupMemberInfo"
     is APISwitchContact -> "apiSwitchContact"
@@ -3497,6 +3518,7 @@ sealed class CR {
   @Serializable @SerialName("acceptingContactRequest") class AcceptingContactRequest(val user: UserRef, val contact: Contact): CR()
   @Serializable @SerialName("contactRequestRejected") class ContactRequestRejected(val user: UserRef): CR()
   @Serializable @SerialName("contactUpdated") class ContactUpdated(val user: UserRef, val toContact: Contact): CR()
+  @Serializable @SerialName("groupMemberUpdated") class GroupMemberUpdated(val user: UserRef, val groupInfo: GroupInfo, val fromMember: GroupMember, val toMember: GroupMember): CR()
   // TODO remove below
   @Serializable @SerialName("contactsSubscribed") class ContactsSubscribed(val server: String, val contactRefs: List<ContactRef>): CR()
   @Serializable @SerialName("contactsDisconnected") class ContactsDisconnected(val server: String, val contactRefs: List<ContactRef>): CR()
@@ -3519,6 +3541,7 @@ sealed class CR {
   @Serializable @SerialName("groupCreated") class GroupCreated(val user: UserRef, val groupInfo: GroupInfo): CR()
   @Serializable @SerialName("sentGroupInvitation") class SentGroupInvitation(val user: UserRef, val groupInfo: GroupInfo, val contact: Contact, val member: GroupMember): CR()
   @Serializable @SerialName("userAcceptedGroupSent") class UserAcceptedGroupSent (val user: UserRef, val groupInfo: GroupInfo, val hostContact: Contact? = null): CR()
+  @Serializable @SerialName("groupLinkConnecting") class GroupLinkConnecting (val user: UserRef, val groupInfo: GroupInfo, val hostMember: GroupMember): CR()
   @Serializable @SerialName("userDeletedMember") class UserDeletedMember(val user: UserRef, val groupInfo: GroupInfo, val member: GroupMember): CR()
   @Serializable @SerialName("leftMemberUser") class LeftMemberUser(val user: UserRef, val groupInfo: GroupInfo): CR()
   @Serializable @SerialName("groupMembers") class GroupMembers(val user: UserRef, val group: Group): CR()
@@ -3647,6 +3670,7 @@ sealed class CR {
     is AcceptingContactRequest -> "acceptingContactRequest"
     is ContactRequestRejected -> "contactRequestRejected"
     is ContactUpdated -> "contactUpdated"
+    is GroupMemberUpdated -> "groupMemberUpdated"
     is ContactsSubscribed -> "contactsSubscribed"
     is ContactsDisconnected -> "contactsDisconnected"
     is ContactSubSummary -> "contactSubSummary"
@@ -3666,6 +3690,7 @@ sealed class CR {
     is GroupCreated -> "groupCreated"
     is SentGroupInvitation -> "sentGroupInvitation"
     is UserAcceptedGroupSent -> "userAcceptedGroupSent"
+    is GroupLinkConnecting -> "groupLinkConnecting"
     is UserDeletedMember -> "userDeletedMember"
     is LeftMemberUser -> "leftMemberUser"
     is GroupMembers -> "groupMembers"
@@ -3789,6 +3814,7 @@ sealed class CR {
     is AcceptingContactRequest -> withUser(user, json.encodeToString(contact))
     is ContactRequestRejected -> withUser(user, noDetails())
     is ContactUpdated -> withUser(user, json.encodeToString(toContact))
+    is GroupMemberUpdated -> withUser(user, "groupInfo: $groupInfo\nfromMember: $fromMember\ntoMember: $toMember")
     is ContactsSubscribed -> "server: $server\ncontacts:\n${json.encodeToString(contactRefs)}"
     is ContactsDisconnected -> "server: $server\ncontacts:\n${json.encodeToString(contactRefs)}"
     is ContactSubSummary -> withUser(user, json.encodeToString(contactSubscriptions))
@@ -3808,6 +3834,7 @@ sealed class CR {
     is GroupCreated -> withUser(user, json.encodeToString(groupInfo))
     is SentGroupInvitation -> withUser(user, "groupInfo: $groupInfo\ncontact: $contact\nmember: $member")
     is UserAcceptedGroupSent -> json.encodeToString(groupInfo)
+    is GroupLinkConnecting -> withUser(user, "groupInfo: $groupInfo\nhostMember: $hostMember")
     is UserDeletedMember -> withUser(user, "groupInfo: $groupInfo\nmember: $member")
     is LeftMemberUser -> withUser(user, json.encodeToString(groupInfo))
     is GroupMembers -> withUser(user, json.encodeToString(group))

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/ChatItemInfoView.kt

@@ -382,7 +382,7 @@ fun ChatItemInfoView(chatModel: ChatModel, ci: ChatItem, ciInfo: ChatItemInfo, d
 
 private fun membersStatuses(chatModel: ChatModel, memberDeliveryStatuses: List<MemberDeliveryStatus>): List<Pair<GroupMember, CIStatus>> {
   return memberDeliveryStatuses.mapNotNull { mds ->
-    chatModel.groupMembers.firstOrNull { it.groupMemberId == mds.groupMemberId }?.let { mem ->
+    chatModel.getGroupMember(mds.groupMemberId)?.let { mem ->
       mem to mds.memberDeliveryStatus
     }
   }

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/ChatView.kt

@@ -152,6 +152,7 @@ fun ChatView(chatId: String, chatModel: ChatModel, onComposed: suspend (chatId:
         hideKeyboard(view)
         AudioPlayer.stop()
         chatModel.chatId.value = null
+        chatModel.groupMembers.clear()
       },
       info = {
         if (ModalManager.end.hasModalsOpen()) {
@@ -212,7 +213,7 @@ fun ChatView(chatId: String, chatModel: ChatModel, onComposed: suspend (chatId:
           setGroupMembers(groupInfo, chatModel)
           ModalManager.end.closeModals()
           ModalManager.end.showModalCloseable(true) { close ->
-            remember { derivedStateOf { chatModel.groupMembers.firstOrNull { it.memberId == member.memberId } } }.value?.let { mem ->
+            remember { derivedStateOf { chatModel.getGroupMember(member.groupMemberId) } }.value?.let { mem ->
               GroupMemberInfoView(groupInfo, mem, stats, code, chatModel, close, close)
             }
           }
@@ -263,6 +264,25 @@ fun ChatView(chatId: String, chatModel: ChatModel, onComposed: suspend (chatId:
           }
         }
       },
+      deleteMessages = { itemIds ->
+        if (itemIds.isNotEmpty()) {
+          val chatInfo = chat.chatInfo
+          withBGApi {
+            val deletedItems: ArrayList<ChatItem> = arrayListOf()
+            for (itemId in itemIds) {
+              val di = chatModel.controller.apiDeleteChatItem(
+                chatInfo.chatType, chatInfo.apiId, itemId, CIDeleteMode.cidmInternal
+              )?.deletedChatItem?.chatItem
+              if (di != null) {
+                deletedItems.add(di)
+              }
+            }
+            for (di in deletedItems) {
+              chatModel.removeChatItem(chatInfo, di)
+            }
+          }
+        }
+      },
       receiveFile = { fileId, encrypted ->
         withApi { chatModel.controller.receiveFile(user, fileId, encrypted) }
       },
@@ -442,6 +462,7 @@ fun ChatLayout(
   showMemberInfo: (GroupInfo, GroupMember) -> Unit,
   loadPrevMessages: (ChatInfo) -> Unit,
   deleteMessage: (Long, CIDeleteMode) -> Unit,
+  deleteMessages: (List<Long>) -> Unit,
   receiveFile: (Long, Boolean) -> Unit,
   cancelFile: (Long) -> Unit,
   joinGroup: (Long, () -> Unit) -> Unit,
@@ -517,7 +538,7 @@ fun ChatLayout(
           ) {
             ChatItemsList(
               chat, unreadCount, composeState, chatItems, searchValue,
-              useLinkPreviews, linkMode, showMemberInfo, loadPrevMessages, deleteMessage,
+              useLinkPreviews, linkMode, showMemberInfo, loadPrevMessages, deleteMessage, deleteMessages,
               receiveFile, cancelFile, joinGroup, acceptCall, acceptFeature, openDirectChat,
               updateContactStats, updateMemberStats, syncContactConnection, syncMemberConnection, findModelChat, findModelMember,
               setReaction, showItemDetails, markRead, setFloatingButton, onComposed, developerTools,
@@ -744,6 +765,7 @@ fun BoxWithConstraintsScope.ChatItemsList(
   showMemberInfo: (GroupInfo, GroupMember) -> Unit,
   loadPrevMessages: (ChatInfo) -> Unit,
   deleteMessage: (Long, CIDeleteMode) -> Unit,
+  deleteMessages: (List<Long>) -> Unit,
   receiveFile: (Long, Boolean) -> Unit,
   cancelFile: (Long) -> Unit,
   joinGroup: (Long, () -> Unit) -> Unit,
@@ -846,31 +868,27 @@ fun BoxWithConstraintsScope.ChatItemsList(
             }
           }
         }
-        val voiceWithTransparentBack = cItem.content.msgContent is MsgContent.MCVoice && cItem.content.text.isEmpty() && cItem.quotedItem == null
-        if (chat.chatInfo is ChatInfo.Group) {
-          if (cItem.chatDir is CIDirection.GroupRcv) {
-            val prevItem = if (i < reversedChatItems.lastIndex) reversedChatItems[i + 1] else null
-            val nextItem = if (i - 1 >= 0) reversedChatItems[i - 1] else null
-            fun getConnectedMemberNames(): List<String> {
-              val ns = mutableListOf<String>()
-              var idx = i
-              while (idx < reversedChatItems.size) {
-                val m = reversedChatItems[idx].memberConnected
-                if (m != null) {
-                  ns.add(m.displayName)
-                } else {
-                  break
-                }
-                idx++
-              }
-              return ns
-            }
-            if (cItem.memberConnected != null && nextItem?.memberConnected != null) {
-              // memberConnected events are aggregated at the last chat item in a row of such events, see ChatItemView
-              Box(Modifier.size(0.dp)) {}
-            } else {
+
+        val revealed = remember { mutableStateOf(false) }
+
+        @Composable
+        fun ChatItemViewShortHand(cItem: ChatItem, range: IntRange?) {
+          ChatItemView(chat.chatInfo, cItem, composeState, provider, useLinkPreviews = useLinkPreviews, linkMode = linkMode, revealed = revealed, range = range, deleteMessage = deleteMessage, deleteMessages = deleteMessages, receiveFile = receiveFile, cancelFile = cancelFile, joinGroup = { _, _ -> }, acceptCall = acceptCall, acceptFeature = acceptFeature, openDirectChat = openDirectChat, updateContactStats = updateContactStats, updateMemberStats = updateMemberStats, syncContactConnection = syncContactConnection, syncMemberConnection = syncMemberConnection, findModelChat = findModelChat, findModelMember = findModelMember, scrollToItem = scrollToItem, setReaction = setReaction, showItemDetails = showItemDetails, developerTools = developerTools)
+        }
+
+        @Composable
+        fun ChatItemView(cItem: ChatItem, range: IntRange?, prevItem: ChatItem?) {
+          val voiceWithTransparentBack = cItem.content.msgContent is MsgContent.MCVoice && cItem.content.text.isEmpty() && cItem.quotedItem == null
+          if (chat.chatInfo is ChatInfo.Group) {
+            if (cItem.chatDir is CIDirection.GroupRcv) {
               val member = cItem.chatDir.groupMember
-              if (showMemberImage(member, prevItem)) {
+              val (prevMember, memCount) =
+                if (range != null) {
+                  chatModel.getPrevHiddenMember(member, range)
+                } else {
+                  null to 1
+                }
+              if (prevItem == null || showMemberImage(member, prevItem) || prevMember != null) {
                 Column(
                   Modifier
                     .padding(top = 8.dp)
@@ -880,7 +898,7 @@ fun BoxWithConstraintsScope.ChatItemsList(
                 ) {
                   if (cItem.content.showMemberName) {
                     Text(
-                      member.displayName,
+                      memberNames(member, prevMember, memCount),
                       Modifier.padding(start = MEMBER_IMAGE_SIZE + 10.dp),
                       style = TextStyle(fontSize = 13.5.sp, color = CurrentColors.value.colors.secondary)
                     )
@@ -898,7 +916,7 @@ fun BoxWithConstraintsScope.ChatItemsList(
                     ) {
                       MemberImage(member)
                     }
-                    ChatItemView(chat.chatInfo, cItem, composeState, provider, useLinkPreviews = useLinkPreviews, linkMode = linkMode, deleteMessage = deleteMessage, receiveFile = receiveFile, cancelFile = cancelFile, joinGroup = { _, _ -> }, acceptCall = acceptCall, acceptFeature = acceptFeature, openDirectChat = openDirectChat, updateContactStats = updateContactStats, updateMemberStats = updateMemberStats, syncContactConnection = syncContactConnection, syncMemberConnection = syncMemberConnection, findModelChat = findModelChat, findModelMember = findModelMember, scrollToItem = scrollToItem, setReaction = setReaction, showItemDetails = showItemDetails, getConnectedMemberNames = ::getConnectedMemberNames, developerTools = developerTools)
+                    ChatItemViewShortHand(cItem, range)
                   }
                 }
               } else {
@@ -907,28 +925,45 @@ fun BoxWithConstraintsScope.ChatItemsList(
                     .padding(start = 8.dp + MEMBER_IMAGE_SIZE + 4.dp, end = if (voiceWithTransparentBack) 12.dp else 66.dp)
                     .then(swipeableModifier)
                 ) {
-                  ChatItemView(chat.chatInfo, cItem, composeState, provider, useLinkPreviews = useLinkPreviews, linkMode = linkMode, deleteMessage = deleteMessage, receiveFile = receiveFile, cancelFile = cancelFile, joinGroup = { _, _ -> }, acceptCall = acceptCall, acceptFeature = acceptFeature, openDirectChat = openDirectChat, updateContactStats = updateContactStats, updateMemberStats = updateMemberStats, syncContactConnection = syncContactConnection, syncMemberConnection = syncMemberConnection, findModelChat = findModelChat, findModelMember = findModelMember, scrollToItem = scrollToItem, setReaction = setReaction, showItemDetails = showItemDetails, getConnectedMemberNames = ::getConnectedMemberNames, developerTools = developerTools)
+                  ChatItemViewShortHand(cItem, range)
                 }
               }
+            } else {
+              Box(
+                Modifier
+                  .padding(start = if (voiceWithTransparentBack) 12.dp else 104.dp, end = 12.dp)
+                  .then(swipeableModifier)
+              ) {
+                ChatItemViewShortHand(cItem, range)
+              }
             }
-          } else {
+          } else { // direct message
+            val sent = cItem.chatDir.sent
             Box(
-              Modifier
-                .padding(start = if (voiceWithTransparentBack) 12.dp else 104.dp, end = 12.dp)
-                .then(swipeableModifier)
+              Modifier.padding(
+                start = if (sent && !voiceWithTransparentBack) 76.dp else 12.dp,
+                end = if (sent || voiceWithTransparentBack) 12.dp else 76.dp,
+              ).then(swipeableModifier)
             ) {
-              ChatItemView(chat.chatInfo, cItem, composeState, provider, useLinkPreviews = useLinkPreviews, linkMode = linkMode, deleteMessage = deleteMessage, receiveFile = receiveFile, cancelFile = cancelFile, joinGroup = { _, _ -> }, acceptCall = acceptCall, acceptFeature = acceptFeature, openDirectChat = openDirectChat, updateContactStats = updateContactStats, updateMemberStats = updateMemberStats, syncContactConnection = syncContactConnection, syncMemberConnection = syncMemberConnection, findModelChat = findModelChat, findModelMember = findModelMember, scrollToItem = scrollToItem, setReaction = setReaction, showItemDetails = showItemDetails, developerTools = developerTools)
+              ChatItemViewShortHand(cItem, range)
             }
           }
-        } else { // direct message
-          val sent = cItem.chatDir.sent
-          Box(
-            Modifier.padding(
-              start = if (sent && !voiceWithTransparentBack) 76.dp else 12.dp,
-              end = if (sent || voiceWithTransparentBack) 12.dp else 76.dp,
-            ).then(swipeableModifier)
-          ) {
-            ChatItemView(chat.chatInfo, cItem, composeState, provider, useLinkPreviews = useLinkPreviews, linkMode = linkMode, deleteMessage = deleteMessage, receiveFile = receiveFile, cancelFile = cancelFile, joinGroup = joinGroup, acceptCall = acceptCall, acceptFeature = acceptFeature, openDirectChat = openDirectChat, updateContactStats = updateContactStats, updateMemberStats = updateMemberStats, syncContactConnection = syncContactConnection, syncMemberConnection = syncMemberConnection, findModelChat = findModelChat, findModelMember = findModelMember, scrollToItem = scrollToItem, setReaction = setReaction, showItemDetails = showItemDetails, developerTools = developerTools)
+        }
+
+        val (currIndex, nextItem) = chatModel.getNextChatItem(cItem)
+        val ciCategory = cItem.mergeCategory
+        if (ciCategory != null && ciCategory == nextItem?.mergeCategory) {
+          // memberConnected events and deleted items are aggregated at the last chat item in a row, see ChatItemView
+        } else {
+          val (prevHidden, prevItem) = chatModel.getPrevShownChatItem(currIndex, ciCategory)
+          val range = chatViewItemsRange(currIndex, prevHidden)
+          if (revealed.value && range != null) {
+            reversedChatItems.subList(range.first, range.last + 1).forEachIndexed { index, ci ->
+              val prev = if (index + range.first == prevHidden) prevItem else reversedChatItems[index + range.first + 1]
+              ChatItemView(ci, null, prev)
+            }
+          } else {
+            ChatItemView(cItem, range, prevItem)
           }
         }
 
@@ -1106,10 +1141,12 @@ fun PreloadItems(
   }
 }
 
-fun showMemberImage(member: GroupMember, prevItem: ChatItem?): Boolean {
-  return prevItem == null || prevItem.chatDir is CIDirection.GroupSnd ||
-      (prevItem.chatDir is CIDirection.GroupRcv && prevItem.chatDir.groupMember.groupMemberId != member.groupMemberId)
-}
+private fun showMemberImage(member: GroupMember, prevItem: ChatItem?): Boolean =
+  when (val dir = prevItem?.chatDir) {
+    is CIDirection.GroupSnd -> true
+    is CIDirection.GroupRcv -> dir.groupMember.groupMemberId != member.groupMemberId
+    else -> false
+  }
 
 val MEMBER_IMAGE_SIZE: Dp = 38.dp
 
@@ -1206,6 +1243,29 @@ private fun markUnreadChatAsRead(activeChat: MutableState<Chat?>, chatModel: Cha
   }
 }
 
+@Composable
+private fun memberNames(member: GroupMember, prevMember: GroupMember?, memCount: Int): String {
+  val name = member.displayName
+  val prevName = prevMember?.displayName
+  return if (prevName != null) {
+    if (memCount > 2) {
+      stringResource(MR.strings.group_members_n).format(name, prevName, memCount - 2)
+    } else {
+      stringResource(MR.strings.group_members_2).format(name, prevName)
+    }
+  } else {
+    name
+  }
+}
+
+fun chatViewItemsRange(currIndex: Int?, prevHidden: Int?): IntRange? =
+  if (currIndex != null && prevHidden != null && prevHidden > currIndex) {
+    currIndex..prevHidden
+  } else {
+    null
+  }
+
+
 sealed class ProviderMedia {
   data class Image(val data: ByteArray, val image: ImageBitmap): ProviderMedia()
   data class Video(val uri: URI, val preview: String): ProviderMedia()
@@ -1347,6 +1407,7 @@ fun PreviewChatLayout() {
       showMemberInfo = { _, _ -> },
       loadPrevMessages = { _ -> },
       deleteMessage = { _, _ -> },
+      deleteMessages = { _ -> },
       receiveFile = { _, _ -> },
       cancelFile = {},
       joinGroup = { _, _ -> },
@@ -1418,6 +1479,7 @@ fun PreviewGroupChatLayout() {
       showMemberInfo = { _, _ -> },
       loadPrevMessages = { _ -> },
       deleteMessage = { _, _ -> },
+      deleteMessages = {},
       receiveFile = { _, _ -> },
       cancelFile = {},
       joinGroup = { _, _ -> },

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/group/GroupChatInfoView.kt

@@ -4,10 +4,12 @@ import InfoRow
 import SectionBottomSpacer
 import SectionDividerSpaced
 import SectionItemView
+import SectionItemViewLongClickable
 import SectionSpacer
 import SectionTextFooter
 import SectionView
 import androidx.compose.desktop.ui.tooling.preview.Preview
+import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.*
 import androidx.compose.material.*
@@ -31,6 +33,7 @@ import chat.simplex.common.views.usersettings.*
 import chat.simplex.common.model.GroupInfo
 import chat.simplex.common.platform.*
 import chat.simplex.common.views.chat.*
+import chat.simplex.common.views.chat.item.ItemAction
 import chat.simplex.common.views.chatlist.*
 import chat.simplex.res.MR
 import kotlinx.coroutines.launch
@@ -82,7 +85,7 @@ fun GroupChatInfoView(chatModel: ChatModel, groupLink: String?, groupLinkMemberR
             member to null
           }
           ModalManager.end.showModalCloseable(true) { closeCurrent ->
-            remember { derivedStateOf { chatModel.groupMembers.firstOrNull { it.memberId == member.memberId } } }.value?.let { mem ->
+            remember { derivedStateOf { chatModel.getGroupMember(member.groupMemberId) } }.value?.let { mem ->
               GroupMemberInfoView(groupInfo, mem, stats, code, chatModel, closeCurrent) {
                 closeCurrent()
                 close()
@@ -157,6 +160,23 @@ fun leaveGroupDialog(groupInfo: GroupInfo, chatModel: ChatModel, close: (() -> U
   )
 }
 
+private fun removeMemberAlert(groupInfo: GroupInfo, mem: GroupMember) {
+  AlertManager.shared.showAlertDialog(
+    title = generalGetString(MR.strings.button_remove_member_question),
+    text = generalGetString(MR.strings.member_will_be_removed_from_group_cannot_be_undone),
+    confirmText = generalGetString(MR.strings.remove_member_confirmation),
+    onConfirm = {
+      withApi {
+        val updatedMember = chatModel.controller.apiRemoveMember(groupInfo.groupId, mem.groupMemberId)
+        if (updatedMember != null) {
+          chatModel.upsertGroupMember(groupInfo, updatedMember)
+        }
+      }
+    },
+    destructive = true,
+  )
+}
+
 @Composable
 fun GroupChatInfoLayout(
   chat: Chat,
@@ -238,8 +258,10 @@ fun GroupChatInfoLayout(
     }
     items(filteredMembers.value) { member ->
       Divider()
-      SectionItemView({ showMemberInfo(member) }, minHeight = 54.dp) {
-        MemberRow(member)
+      val showMenu = remember { mutableStateOf(false) }
+      SectionItemViewLongClickable({ showMemberInfo(member) }, { showMenu.value = true }, minHeight = 54.dp) {
+        DropDownMenuForMember(member, groupInfo, showMenu)
+        MemberRow(member, onClick = { showMemberInfo(member) })
       }
     }
     item {
@@ -344,7 +366,7 @@ private fun AddMembersButton(tint: Color = MaterialTheme.colors.primary, onClick
 }
 
 @Composable
-private fun MemberRow(member: GroupMember, user: Boolean = false) {
+private fun MemberRow(member: GroupMember, user: Boolean = false, onClick: (() -> Unit)? = null) {
   Row(
     Modifier.fillMaxWidth(),
     horizontalArrangement = Arrangement.SpaceBetween,
@@ -390,6 +412,29 @@ private fun MemberVerifiedShield() {
   Icon(painterResource(MR.images.ic_verified_user), null, Modifier.padding(end = 3.dp).size(16.dp), tint = MaterialTheme.colors.secondary)
 }
 
+@Composable
+private fun DropDownMenuForMember(member: GroupMember, groupInfo: GroupInfo, showMenu: MutableState<Boolean>) {
+  DefaultDropdownMenu(showMenu) {
+    if (member.canBeRemoved(groupInfo)) {
+      ItemAction(stringResource(MR.strings.remove_member_button), painterResource(MR.images.ic_delete), color = MaterialTheme.colors.error, onClick = {
+        removeMemberAlert(groupInfo, member)
+        showMenu.value = false
+      })
+    }
+    if (member.memberSettings.showMessages) {
+      ItemAction(stringResource(MR.strings.block_member_button), painterResource(MR.images.ic_back_hand), color = MaterialTheme.colors.error, onClick = {
+        blockMemberAlert(groupInfo, member)
+        showMenu.value = false
+      })
+    } else {
+      ItemAction(stringResource(MR.strings.unblock_member_button), painterResource(MR.images.ic_do_not_touch), onClick = {
+        unblockMemberAlert(groupInfo, member)
+        showMenu.value = false
+      })
+    }
+  }
+}
+
 @Composable
 private fun GroupLinkButton(onClick: () -> Unit) {
   SettingsActionItem(

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/group/GroupMemberInfoView.kt

@@ -96,6 +96,8 @@ fun GroupMemberInfoView(
       connectViaAddress = { connReqUri ->
         connectViaMemberAddressAlert(connReqUri)
       },
+      blockMember = { blockMemberAlert(groupInfo, member) },
+      unblockMember = { unblockMemberAlert(groupInfo, member) },
       removeMember = { removeMemberDialog(groupInfo, member, chatModel, close) },
       onRoleSelected = {
         if (it == newRole.value) return@GroupMemberInfoLayout
@@ -162,7 +164,7 @@ fun GroupMemberInfoView(
       },
       verifyClicked = {
         ModalManager.end.showModalCloseable { close ->
-          remember { derivedStateOf { chatModel.groupMembers.firstOrNull { it.memberId == member.memberId } } }.value?.let { mem ->
+          remember { derivedStateOf { chatModel.getGroupMember(member.groupMemberId) } }.value?.let { mem ->
             VerifyCodeView(
               mem.displayName,
               connectionCode,
@@ -224,6 +226,8 @@ fun GroupMemberInfoLayout(
   openDirectChat: (Long) -> Unit,
   createMemberContact: () -> Unit,
   connectViaAddress: (String) -> Unit,
+  blockMember: () -> Unit,
+  unblockMember: () -> Unit,
   removeMember: () -> Unit,
   onRoleSelected: (GroupMemberRole) -> Unit,
   switchMemberAddress: () -> Unit,
@@ -338,9 +342,14 @@ fun GroupMemberInfoLayout(
       }
     }
 
-    if (member.canBeRemoved(groupInfo)) {
-      SectionDividerSpaced(maxBottomPadding = false)
-      SectionView {
+    SectionDividerSpaced(maxBottomPadding = false)
+    SectionView {
+      if (member.memberSettings.showMessages) {
+        BlockMemberButton(blockMember)
+      } else {
+        UnblockMemberButton(unblockMember)
+      }
+      if (member.canBeRemoved(groupInfo)) {
         RemoveMemberButton(removeMember)
       }
     }
@@ -396,6 +405,26 @@ fun GroupMemberInfoHeader(member: GroupMember) {
   }
 }
 
+@Composable
+fun BlockMemberButton(onClick: () -> Unit) {
+  SettingsActionItem(
+    painterResource(MR.images.ic_back_hand),
+    stringResource(MR.strings.block_member_button),
+    click = onClick,
+    textColor = Color.Red,
+    iconColor = Color.Red,
+  )
+}
+
+@Composable
+fun UnblockMemberButton(onClick: () -> Unit) {
+  SettingsActionItem(
+    painterResource(MR.images.ic_do_not_touch),
+    stringResource(MR.strings.unblock_member_button),
+    click = onClick
+  )
+}
+
 @Composable
 fun RemoveMemberButton(onClick: () -> Unit) {
   SettingsActionItem(
@@ -485,6 +514,43 @@ fun connectViaMemberAddressAlert(connReqUri: String) {
   }
 }
 
+fun blockMemberAlert(gInfo: GroupInfo, mem: GroupMember) {
+  AlertManager.shared.showAlertDialog(
+    title = generalGetString(MR.strings.block_member_question),
+    text = generalGetString(MR.strings.block_member_desc).format(mem.chatViewName),
+    confirmText = generalGetString(MR.strings.block_member_confirmation),
+    onConfirm = {
+      toggleShowMemberMessages(gInfo, mem, false)
+    },
+    destructive = true,
+  )
+}
+
+fun unblockMemberAlert(gInfo: GroupInfo, mem: GroupMember) {
+  AlertManager.shared.showAlertDialog(
+    title = generalGetString(MR.strings.unblock_member_question),
+    text = generalGetString(MR.strings.unblock_member_desc).format(mem.chatViewName),
+    confirmText = generalGetString(MR.strings.unblock_member_confirmation),
+    onConfirm = {
+      toggleShowMemberMessages(gInfo, mem, true)
+    },
+  )
+}
+
+fun toggleShowMemberMessages(gInfo: GroupInfo, member: GroupMember, showMessages: Boolean) {
+  val updatedMemberSettings = member.memberSettings.copy(showMessages = showMessages)
+  updateMemberSettings(gInfo, member, updatedMemberSettings)
+}
+
+fun updateMemberSettings(gInfo: GroupInfo, member: GroupMember, memberSettings: GroupMemberSettings) {
+  withBGApi {
+    val success = ChatController.apiSetMemberSettings(gInfo.groupId, member.groupMemberId, memberSettings)
+    if (success) {
+      ChatModel.upsertGroupMember(gInfo, member.copy(memberSettings = memberSettings))
+    }
+  }
+}
+
 @Preview
 @Composable
 fun PreviewGroupMemberInfoLayout() {
@@ -500,6 +566,8 @@ fun PreviewGroupMemberInfoLayout() {
       openDirectChat = {},
       createMemberContact = {},
       connectViaAddress = {},
+      blockMember = {},
+      unblockMember = {},
       removeMember = {},
       onRoleSelected = {},
       switchMemberAddress = {},

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/item/CIChatFeatureView.kt

@@ -1,19 +1,119 @@
 package chat.simplex.common.views.chat.item
 
+import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.*
-import androidx.compose.runtime.Composable
+import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.painter.Painter
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
-import chat.simplex.common.model.ChatItem
-import chat.simplex.common.model.Feature
+import chat.simplex.common.model.*
+import chat.simplex.common.model.ChatModel.getChatItemIndexOrNull
+import chat.simplex.common.views.helpers.onRightClick
 
 @Composable
 fun CIChatFeatureView(
+  chatItem: ChatItem,
+  feature: Feature,
+  iconColor: Color,
+  icon: Painter? = null,
+  revealed: MutableState<Boolean>,
+  showMenu: MutableState<Boolean>,
+) {
+  val merged = if (!revealed.value) mergedFeatures(chatItem) else emptyList()
+  Box(
+    Modifier
+      .combinedClickable(
+        onLongClick = { showMenu.value = true },
+        onClick = {}
+      )
+      .onRightClick { showMenu.value = true }
+  ) {
+    if (!revealed.value && merged != null) {
+      Row(
+        Modifier.padding(horizontal = 6.dp, vertical = 8.dp),
+        horizontalArrangement = Arrangement.spacedBy(4.dp)
+      ) {
+        merged.forEach {
+          FeatureIconView(it)
+        }
+      }
+    } else {
+      FullFeatureView(chatItem, feature, iconColor, icon)
+    }
+  }
+}
+
+private data class FeatureInfo(
+  val icon: PainterBox,
+  val color: Color,
+  val param: String?
+)
+
+private class PainterBox(
+  val featureName: String,
+  val icon: Painter,
+) {
+  override fun hashCode(): Int = featureName.hashCode()
+  override fun equals(other: Any?): Boolean = other is PainterBox && featureName == other.featureName
+}
+
+@Composable
+private fun Feature.toFeatureInfo(color: Color, param: Int?, type: String): FeatureInfo =
+  FeatureInfo(
+    icon = PainterBox(type, iconFilled()),
+    color = color,
+    param = if (this.hasParam && param != null) timeText(param) else null
+  )
+
+@Composable
+private fun mergedFeatures(chatItem: ChatItem): List<FeatureInfo>? {
+  val m = ChatModel
+  val fs: ArrayList<FeatureInfo> = arrayListOf()
+  val icons: MutableSet<PainterBox> = mutableSetOf()
+  var i = getChatItemIndexOrNull(chatItem)
+  if (i != null) {
+    val reversedChatItems = m.chatItems.asReversed()
+    while (i < reversedChatItems.size) {
+      val f = featureInfo(reversedChatItems[i]) ?: break
+      if (!icons.contains(f.icon)) {
+        fs.add(0, f)
+        icons.add(f.icon)
+      }
+      i++
+    }
+  }
+  return if (fs.size > 1) fs else null
+}
+
+@Composable
+private fun featureInfo(ci: ChatItem): FeatureInfo? =
+  when (ci.content) {
+    is CIContent.RcvChatFeature -> ci.content.feature.toFeatureInfo(ci.content.enabled.iconColor, ci.content.param, ci.content.feature.name)
+    is CIContent.SndChatFeature -> ci.content.feature.toFeatureInfo(ci.content.enabled.iconColor, ci.content.param, ci.content.feature.name)
+    is CIContent.RcvGroupFeature -> ci.content.groupFeature.toFeatureInfo(ci.content.preference.enable.iconColor, ci.content.param, ci.content.groupFeature.name)
+    is CIContent.SndGroupFeature -> ci.content.groupFeature.toFeatureInfo(ci.content.preference.enable.iconColor, ci.content.param, ci.content.groupFeature.name)
+    else -> null
+  }
+
+@Composable
+private fun FeatureIconView(f: FeatureInfo) {
+  val icon = @Composable { Icon(f.icon.icon, null, Modifier.size(20.dp), tint = f.color) }
+  if (f.param != null) {
+    Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(4.dp)) {
+      icon()
+      Text(chatEventText(f.param, ""), maxLines = 1)
+    }
+  } else {
+    icon()
+  }
+}
+
+@Composable
+private fun FullFeatureView(
   chatItem: ChatItem,
   feature: Feature,
   iconColor: Color,
@@ -24,7 +124,7 @@ fun CIChatFeatureView(
     verticalAlignment = Alignment.CenterVertically,
     horizontalArrangement = Arrangement.spacedBy(4.dp)
   ) {
-    Icon(icon ?: feature.iconFilled(), feature.text, Modifier.size(18.dp), tint = iconColor)
+    Icon(icon ?: feature.iconFilled(), feature.text, Modifier.size(20.dp), tint = iconColor)
     Text(
       chatEventText(chatItem),
       Modifier,

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/item/CIEventView.kt

@@ -1,11 +1,9 @@
 package chat.simplex.common.views.chat.item
 
 import androidx.compose.desktop.ui.tooling.preview.Preview
-import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material.*
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.*
 import androidx.compose.ui.unit.dp
@@ -14,12 +12,7 @@ import chat.simplex.common.ui.theme.*
 
 @Composable
 fun CIEventView(text: AnnotatedString) {
-  Row(
-    Modifier.padding(horizontal = 6.dp, vertical = 6.dp),
-    verticalAlignment = Alignment.CenterVertically
-  ) {
-    Text(text, style = MaterialTheme.typography.body1.copy(lineHeight = 22.sp))
-  }
+  Text(text, Modifier.padding(horizontal = 6.dp, vertical = 6.dp), style = MaterialTheme.typography.body1.copy(lineHeight = 22.sp))
 }
 @Preview/*(
   uiMode = Configuration.UI_MODE_NIGHT_YES,

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/item/ChatItemView.kt

@@ -21,9 +21,8 @@ import androidx.compose.ui.unit.*
 import chat.simplex.common.model.*
 import chat.simplex.common.platform.*
 import chat.simplex.common.ui.theme.*
+import chat.simplex.common.views.chat.*
 import chat.simplex.common.views.helpers.*
-import chat.simplex.common.views.chat.ComposeContextItem
-import chat.simplex.common.views.chat.ComposeState
 import chat.simplex.res.MR
 import kotlinx.datetime.Clock
 
@@ -47,7 +46,10 @@ fun ChatItemView(
   imageProvider: (() -> ImageGalleryProvider)? = null,
   useLinkPreviews: Boolean,
   linkMode: SimplexLinkMode,
+  revealed: MutableState<Boolean>,
+  range: IntRange?,
   deleteMessage: (Long, CIDeleteMode) -> Unit,
+  deleteMessages: (List<Long>) -> Unit,
   receiveFile: (Long, Boolean) -> Unit,
   cancelFile: (Long) -> Unit,
   joinGroup: (Long, () -> Unit) -> Unit,
@@ -63,14 +65,12 @@ fun ChatItemView(
   findModelMember: (String) -> GroupMember?,
   setReaction: (ChatInfo, ChatItem, Boolean, MsgReaction) -> Unit,
   showItemDetails: (ChatInfo, ChatItem) -> Unit,
-  getConnectedMemberNames: (() -> List<String>)? = null,
   developerTools: Boolean,
 ) {
   val uriHandler = LocalUriHandler.current
   val sent = cItem.chatDir.sent
   val alignment = if (sent) Alignment.CenterEnd else Alignment.CenterStart
   val showMenu = remember { mutableStateOf(false) }
-  val revealed = remember { mutableStateOf(false) }
   val fullDeleteAllowed = remember(cInfo) { cInfo.featureEnabled(ChatFeature.FullDelete) }
   val onLinkLongClick = { _: String -> showMenu.value = true }
   val live = composeState.value.liveMessage != null
@@ -178,61 +178,75 @@ fun ChatItemView(
         fun MsgContentItemDropdownMenu() {
           val saveFileLauncher = rememberSaveFileLauncher(ciFile = cItem.file)
           DefaultDropdownMenu(showMenu) {
-            if (cInfo.featureEnabled(ChatFeature.Reactions) && cItem.allowAddReaction) {
-              MsgReactionsMenu()
-            }
-            if (cItem.meta.itemDeleted == null && !live) {
-              ItemAction(stringResource(MR.strings.reply_verb), painterResource(MR.images.ic_reply), onClick = {
-                if (composeState.value.editing) {
-                  composeState.value = ComposeState(contextItem = ComposeContextItem.QuotedItem(cItem), useLinkPreviews = useLinkPreviews)
-                } else {
-                  composeState.value = composeState.value.copy(contextItem = ComposeContextItem.QuotedItem(cItem))
-                }
-                showMenu.value = false
-              })
-            }
-            val clipboard = LocalClipboardManager.current
-            ItemAction(stringResource(MR.strings.share_verb), painterResource(MR.images.ic_share), onClick = {
-              val fileSource = getLoadedFileSource(cItem.file)
-              when {
-                fileSource != null -> shareFile(cItem.text, fileSource)
-                else -> clipboard.shareText(cItem.content.text)
+            if (cItem.content.msgContent != null) {
+              if (cInfo.featureEnabled(ChatFeature.Reactions) && cItem.allowAddReaction) {
+                MsgReactionsMenu()
               }
-              showMenu.value = false
-            })
-            ItemAction(stringResource(MR.strings.copy_verb), painterResource(MR.images.ic_content_copy), onClick = {
-              copyItemToClipboard(cItem, clipboard)
-              showMenu.value = false
-            })
-            if ((cItem.content.msgContent is MsgContent.MCImage || cItem.content.msgContent is MsgContent.MCVideo || cItem.content.msgContent is MsgContent.MCFile || cItem.content.msgContent is MsgContent.MCVoice) && getLoadedFilePath(cItem.file) != null) {
-              SaveContentItemAction(cItem, saveFileLauncher, showMenu)
-            }
-            if (cItem.meta.editable && cItem.content.msgContent !is MsgContent.MCVoice && !live) {
-              ItemAction(stringResource(MR.strings.edit_verb), painterResource(MR.images.ic_edit_filled), onClick = {
-                composeState.value = ComposeState(editingItem = cItem, useLinkPreviews = useLinkPreviews)
+              if (cItem.meta.itemDeleted == null && !live) {
+                ItemAction(stringResource(MR.strings.reply_verb), painterResource(MR.images.ic_reply), onClick = {
+                  if (composeState.value.editing) {
+                    composeState.value = ComposeState(contextItem = ComposeContextItem.QuotedItem(cItem), useLinkPreviews = useLinkPreviews)
+                  } else {
+                    composeState.value = composeState.value.copy(contextItem = ComposeContextItem.QuotedItem(cItem))
+                  }
+                  showMenu.value = false
+                })
+              }
+              val clipboard = LocalClipboardManager.current
+              ItemAction(stringResource(MR.strings.share_verb), painterResource(MR.images.ic_share), onClick = {
+                val fileSource = getLoadedFileSource(cItem.file)
+                when {
+                  fileSource != null -> shareFile(cItem.text, fileSource)
+                  else -> clipboard.shareText(cItem.content.text)
+                }
                 showMenu.value = false
               })
-            }
-            if (cItem.meta.itemDeleted != null && revealed.value) {
-              ItemAction(
-                stringResource(MR.strings.hide_verb),
-                painterResource(MR.images.ic_visibility_off),
-                onClick = {
-                  revealed.value = false
+              ItemAction(stringResource(MR.strings.copy_verb), painterResource(MR.images.ic_content_copy), onClick = {
+                copyItemToClipboard(cItem, clipboard)
+                showMenu.value = false
+              })
+              if ((cItem.content.msgContent is MsgContent.MCImage || cItem.content.msgContent is MsgContent.MCVideo || cItem.content.msgContent is MsgContent.MCFile || cItem.content.msgContent is MsgContent.MCVoice) && getLoadedFilePath(cItem.file) != null) {
+                SaveContentItemAction(cItem, saveFileLauncher, showMenu)
+              }
+              if (cItem.meta.editable && cItem.content.msgContent !is MsgContent.MCVoice && !live) {
+                ItemAction(stringResource(MR.strings.edit_verb), painterResource(MR.images.ic_edit_filled), onClick = {
+                  composeState.value = ComposeState(editingItem = cItem, useLinkPreviews = useLinkPreviews)
                   showMenu.value = false
-                }
-              )
-            }
-            ItemInfoAction(cInfo, cItem, showItemDetails, showMenu)
-            if (cItem.meta.itemDeleted == null && cItem.file != null && cItem.file.cancelAction != null) {
-              CancelFileItemAction(cItem.file.fileId, showMenu, cancelFile = cancelFile, cancelAction = cItem.file.cancelAction)
-            }
-            if (!(live && cItem.meta.isLive)) {
-              DeleteItemAction(cItem, showMenu, questionText = deleteMessageQuestionText(), deleteMessage)
-            }
-            val groupInfo = cItem.memberToModerate(cInfo)?.first
-            if (groupInfo != null) {
-              ModerateItemAction(cItem, questionText = moderateMessageQuestionText(), showMenu, deleteMessage)
+                })
+              }
+              ItemInfoAction(cInfo, cItem, showItemDetails, showMenu)
+              if (revealed.value) {
+                HideItemAction(revealed, showMenu)
+              }
+              if (cItem.meta.itemDeleted == null && cItem.file != null && cItem.file.cancelAction != null) {
+                CancelFileItemAction(cItem.file.fileId, showMenu, cancelFile = cancelFile, cancelAction = cItem.file.cancelAction)
+              }
+              if (!(live && cItem.meta.isLive)) {
+                DeleteItemAction(cItem, revealed, showMenu, questionText = deleteMessageQuestionText(), deleteMessage, deleteMessages)
+              }
+              val groupInfo = cItem.memberToModerate(cInfo)?.first
+              if (groupInfo != null) {
+                ModerateItemAction(cItem, questionText = moderateMessageQuestionText(), showMenu, deleteMessage)
+              }
+            } else if (cItem.meta.itemDeleted != null) {
+              if (revealed.value) {
+                HideItemAction(revealed, showMenu)
+              } else if (!cItem.isDeletedContent) {
+                RevealItemAction(revealed, showMenu)
+              } else if (range != null) {
+                ExpandItemAction(revealed, showMenu)
+              }
+              ItemInfoAction(cInfo, cItem, showItemDetails, showMenu)
+              DeleteItemAction(cItem, revealed, showMenu, questionText = deleteMessageQuestionText(), deleteMessage, deleteMessages)
+            } else if (cItem.isDeletedContent) {
+              ItemInfoAction(cInfo, cItem, showItemDetails, showMenu)
+              DeleteItemAction(cItem, revealed, showMenu, questionText = deleteMessageQuestionText(), deleteMessage, deleteMessages)
+            } else if (cItem.mergeCategory != null) {
+              if (revealed.value) {
+                ShrinkItemAction(revealed, showMenu)
+              } else {
+                ExpandItemAction(revealed, showMenu)
+              }
             }
           }
         }
@@ -241,25 +255,18 @@ fun ChatItemView(
         fun MarkedDeletedItemDropdownMenu() {
           DefaultDropdownMenu(showMenu) {
             if (!cItem.isDeletedContent) {
-              ItemAction(
-                stringResource(MR.strings.reveal_verb),
-                painterResource(MR.images.ic_visibility),
-                onClick = {
-                  revealed.value = true
-                  showMenu.value = false
-                }
-              )
+              RevealItemAction(revealed, showMenu)
             }
             ItemInfoAction(cInfo, cItem, showItemDetails, showMenu)
-            DeleteItemAction(cItem, showMenu, questionText = deleteMessageQuestionText(), deleteMessage)
+            DeleteItemAction(cItem, revealed, showMenu, questionText = deleteMessageQuestionText(), deleteMessage, deleteMessages)
           }
         }
 
         @Composable
         fun ContentItem() {
           val mc = cItem.content.msgContent
-          if (cItem.meta.itemDeleted != null && !revealed.value) {
-            MarkedDeletedItemView(cItem, cInfo.timedMessagesTTL)
+          if (cItem.meta.itemDeleted != null && (!revealed.value || cItem.isDeletedContent)) {
+            MarkedDeletedItemView(cItem, cInfo.timedMessagesTTL, revealed)
             MarkedDeletedItemDropdownMenu()
           } else {
             if (cItem.quotedItem == null && cItem.meta.itemDeleted == null && !cItem.meta.isLive) {
@@ -281,7 +288,7 @@ fun ChatItemView(
           DeletedItemView(cItem, cInfo.timedMessagesTTL)
           DefaultDropdownMenu(showMenu) {
             ItemInfoAction(cInfo, cItem, showItemDetails, showMenu)
-            DeleteItemAction(cItem, showMenu, questionText = deleteMessageQuestionText(), deleteMessage)
+            DeleteItemAction(cItem, revealed, showMenu, questionText = deleteMessageQuestionText(), deleteMessage, deleteMessages)
           }
         }
 
@@ -289,9 +296,32 @@ fun ChatItemView(
           CICallItemView(cInfo, cItem, status, duration, acceptCall)
         }
 
+        fun mergedGroupEventText(chatItem: ChatItem): String? {
+          val (count, ns) = chatModel.getConnectedMemberNames(chatItem)
+          val members = when {
+            ns.size == 1 -> String.format(generalGetString(MR.strings.rcv_group_event_1_member_connected), ns[0])
+            ns.size == 2 -> String.format(generalGetString(MR.strings.rcv_group_event_2_members_connected), ns[0], ns[1])
+            ns.size == 3 -> String.format(generalGetString(MR.strings.rcv_group_event_3_members_connected), ns[0], ns[1], ns[2])
+            ns.size > 3 -> String.format(generalGetString(MR.strings.rcv_group_event_n_members_connected), ns[0], ns[1], ns.size - 2)
+            else -> ""
+          }
+          return if (count <= 1) {
+            null
+          } else if (ns.isEmpty()) {
+            generalGetString(MR.strings.rcv_group_events_count).format(count)
+          } else if (count > ns.size) {
+            members + " " + generalGetString(MR.strings.rcv_group_and_other_events).format(count - ns.size)
+          } else {
+            members
+          }
+        }
+
         fun eventItemViewText(): AnnotatedString {
           val memberDisplayName = cItem.memberDisplayName
-          return if (memberDisplayName != null) {
+          val t = mergedGroupEventText(cItem)
+          return if (!revealed.value && t != null) {
+            chatEventText(t, cItem.timestampText)
+          } else if (memberDisplayName != null) {
             buildAnnotatedString {
               withStyle(chatEventStyle) { append(memberDisplayName) }
               append(" ")
@@ -305,35 +335,12 @@ fun ChatItemView(
           CIEventView(eventItemViewText())
         }
 
-        fun membersConnectedText(): String? {
-          return if (getConnectedMemberNames != null) {
-            val ns = getConnectedMemberNames()
-            when {
-              ns.size > 3 -> String.format(generalGetString(MR.strings.rcv_group_event_n_members_connected), ns[0], ns[1], ns.size - 2)
-              ns.size == 3 -> String.format(generalGetString(MR.strings.rcv_group_event_3_members_connected), ns[0], ns[1], ns[2])
-              ns.size == 2 -> String.format(generalGetString(MR.strings.rcv_group_event_2_members_connected), ns[0], ns[1])
-              else -> null
-            }
-          } else {
-            null
-          }
-        }
-
-        fun membersConnectedItemText(): AnnotatedString {
-          val t = membersConnectedText()
-          return if (t != null) {
-            chatEventText(t, cItem.timestampText)
-          } else {
-            eventItemViewText()
-          }
-        }
-
         @Composable
         fun ModeratedItem() {
-          MarkedDeletedItemView(cItem, cInfo.timedMessagesTTL)
+          MarkedDeletedItemView(cItem, cInfo.timedMessagesTTL, revealed)
           DefaultDropdownMenu(showMenu) {
             ItemInfoAction(cInfo, cItem, showItemDetails, showMenu)
-            DeleteItemAction(cItem, showMenu, questionText = generalGetString(MR.strings.delete_message_cannot_be_undone_warning), deleteMessage)
+            DeleteItemAction(cItem, revealed, showMenu, questionText = generalGetString(MR.strings.delete_message_cannot_be_undone_warning), deleteMessage, deleteMessages)
           }
         }
 
@@ -352,26 +359,61 @@ fun ChatItemView(
           is CIContent.RcvDecryptionError -> CIRcvDecryptionError(c.msgDecryptError, c.msgCount, cInfo, cItem, updateContactStats = updateContactStats, updateMemberStats = updateMemberStats, syncContactConnection = syncContactConnection, syncMemberConnection = syncMemberConnection, findModelChat = findModelChat, findModelMember = findModelMember)
           is CIContent.RcvGroupInvitation -> CIGroupInvitationView(cItem, c.groupInvitation, c.memberRole, joinGroup = joinGroup, chatIncognito = cInfo.incognito)
           is CIContent.SndGroupInvitation -> CIGroupInvitationView(cItem, c.groupInvitation, c.memberRole, joinGroup = joinGroup, chatIncognito = cInfo.incognito)
-          is CIContent.RcvDirectEventContent -> EventItemView()
-          is CIContent.RcvGroupEventContent -> when (c.rcvGroupEvent) {
-            is RcvGroupEvent.MemberConnected -> CIEventView(membersConnectedItemText())
-            is RcvGroupEvent.MemberCreatedContact -> CIMemberCreatedContactView(cItem, openDirectChat)
-            else -> EventItemView()
+          is CIContent.RcvDirectEventContent -> {
+            EventItemView()
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.RcvGroupEventContent -> {
+            when (c.rcvGroupEvent) {
+              is RcvGroupEvent.MemberCreatedContact -> CIMemberCreatedContactView(cItem, openDirectChat)
+              else -> EventItemView()
+            }
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.SndGroupEventContent -> {
+            EventItemView()
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.RcvConnEventContent -> {
+            EventItemView()
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.SndConnEventContent -> {
+            EventItemView()
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.RcvChatFeature -> {
+            CIChatFeatureView(cItem, c.feature, c.enabled.iconColor, revealed = revealed, showMenu = showMenu)
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.SndChatFeature -> {
+            CIChatFeatureView(cItem, c.feature, c.enabled.iconColor, revealed = revealed, showMenu = showMenu)
+            MsgContentItemDropdownMenu()
           }
-          is CIContent.SndGroupEventContent -> EventItemView()
-          is CIContent.RcvConnEventContent -> EventItemView()
-          is CIContent.SndConnEventContent -> EventItemView()
-          is CIContent.RcvChatFeature -> CIChatFeatureView(cItem, c.feature, c.enabled.iconColor)
-          is CIContent.SndChatFeature -> CIChatFeatureView(cItem, c.feature, c.enabled.iconColor)
           is CIContent.RcvChatPreference -> {
             val ct = if (cInfo is ChatInfo.Direct) cInfo.contact else null
             CIFeaturePreferenceView(cItem, ct, c.feature, c.allowed, acceptFeature)
           }
-          is CIContent.SndChatPreference -> CIChatFeatureView(cItem, c.feature, MaterialTheme.colors.secondary, icon = c.feature.icon,)
-          is CIContent.RcvGroupFeature -> CIChatFeatureView(cItem, c.groupFeature, c.preference.enable.iconColor)
-          is CIContent.SndGroupFeature -> CIChatFeatureView(cItem, c.groupFeature, c.preference.enable.iconColor)
-          is CIContent.RcvChatFeatureRejected -> CIChatFeatureView(cItem, c.feature, Color.Red)
-          is CIContent.RcvGroupFeatureRejected -> CIChatFeatureView(cItem, c.groupFeature, Color.Red)
+          is CIContent.SndChatPreference -> {
+            CIChatFeatureView(cItem, c.feature, MaterialTheme.colors.secondary, icon = c.feature.icon, revealed, showMenu = showMenu)
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.RcvGroupFeature -> {
+            CIChatFeatureView(cItem, c.groupFeature, c.preference.enable.iconColor, revealed = revealed, showMenu = showMenu)
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.SndGroupFeature -> {
+            CIChatFeatureView(cItem, c.groupFeature, c.preference.enable.iconColor, revealed = revealed, showMenu = showMenu)
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.RcvChatFeatureRejected -> {
+            CIChatFeatureView(cItem, c.feature, Color.Red, revealed = revealed, showMenu = showMenu)
+            MsgContentItemDropdownMenu()
+          }
+          is CIContent.RcvGroupFeatureRejected -> {
+            CIChatFeatureView(cItem, c.groupFeature, Color.Red, revealed = revealed, showMenu = showMenu)
+            MsgContentItemDropdownMenu()
+          }
           is CIContent.SndModerated -> ModeratedItem()
           is CIContent.RcvModerated -> ModeratedItem()
           is CIContent.InvalidJSON -> CIInvalidJSONView(c.json)
@@ -430,16 +472,38 @@ fun ItemInfoAction(
 @Composable
 fun DeleteItemAction(
   cItem: ChatItem,
+  revealed: MutableState<Boolean>,
   showMenu: MutableState<Boolean>,
   questionText: String,
-  deleteMessage: (Long, CIDeleteMode) -> Unit
+  deleteMessage: (Long, CIDeleteMode) -> Unit,
+  deleteMessages: (List<Long>) -> Unit,
 ) {
   ItemAction(
     stringResource(MR.strings.delete_verb),
     painterResource(MR.images.ic_delete),
     onClick = {
       showMenu.value = false
-      deleteMessageAlertDialog(cItem, questionText, deleteMessage = deleteMessage)
+      if (!revealed.value && cItem.meta.itemDeleted != null) {
+        val currIndex = chatModel.getChatItemIndexOrNull(cItem)
+        val ciCategory = cItem.mergeCategory
+        if (currIndex != null && ciCategory != null) {
+          val (prevHidden, _) = chatModel.getPrevShownChatItem(currIndex, ciCategory)
+          val range = chatViewItemsRange(currIndex, prevHidden)
+          if (range != null) {
+            val itemIds: ArrayList<Long> = arrayListOf()
+            for (i in range) {
+              itemIds.add(chatModel.chatItems.asReversed()[i].id)
+            }
+            deleteMessagesAlertDialog(itemIds, generalGetString(MR.strings.delete_message_mark_deleted_warning), deleteMessages = deleteMessages)
+          } else {
+            deleteMessageAlertDialog(cItem, questionText, deleteMessage = deleteMessage)
+          }
+        } else {
+          deleteMessageAlertDialog(cItem, questionText, deleteMessage = deleteMessage)
+        }
+      } else {
+        deleteMessageAlertDialog(cItem, questionText, deleteMessage = deleteMessage)
+      }
     },
     color = Color.Red
   )
@@ -463,6 +527,54 @@ fun ModerateItemAction(
   )
 }
 
+@Composable
+private fun RevealItemAction(revealed: MutableState<Boolean>, showMenu: MutableState<Boolean>) {
+  ItemAction(
+    stringResource(MR.strings.reveal_verb),
+    painterResource(MR.images.ic_visibility),
+    onClick = {
+      revealed.value = true
+      showMenu.value = false
+    }
+  )
+}
+
+@Composable
+private fun HideItemAction(revealed: MutableState<Boolean>, showMenu: MutableState<Boolean>) {
+  ItemAction(
+    stringResource(MR.strings.hide_verb),
+    painterResource(MR.images.ic_visibility_off),
+    onClick = {
+      revealed.value = false
+      showMenu.value = false
+    }
+  )
+}
+
+@Composable
+private fun ExpandItemAction(revealed: MutableState<Boolean>, showMenu: MutableState<Boolean>) {
+  ItemAction(
+    stringResource(MR.strings.expand_verb),
+    painterResource(MR.images.ic_expand_all),
+    onClick = {
+      revealed.value = true
+      showMenu.value = false
+    },
+  )
+}
+
+@Composable
+private fun ShrinkItemAction(revealed: MutableState<Boolean>, showMenu: MutableState<Boolean>) {
+  ItemAction(
+    stringResource(MR.strings.hide_verb),
+    painterResource(MR.images.ic_collapse_all),
+    onClick = {
+      revealed.value = false
+      showMenu.value = false
+    },
+  )
+}
+
 @Composable
 fun ItemAction(text: String, icon: Painter, onClick: () -> Unit, color: Color = Color.Unspecified) {
   val finalColor = if (color == Color.Unspecified) {
@@ -542,6 +654,26 @@ fun deleteMessageAlertDialog(chatItem: ChatItem, questionText: String, deleteMes
   )
 }
 
+fun deleteMessagesAlertDialog(itemIds: List<Long>, questionText: String, deleteMessages: (List<Long>) -> Unit) {
+  AlertManager.shared.showAlertDialogButtons(
+    title = generalGetString(MR.strings.delete_messages__question).format(itemIds.size),
+    text = questionText,
+    buttons = {
+      Row(
+        Modifier
+          .fillMaxWidth()
+          .padding(horizontal = 8.dp, vertical = 2.dp),
+        horizontalArrangement = Arrangement.Center,
+      ) {
+        TextButton(onClick = {
+          deleteMessages(itemIds)
+          AlertManager.shared.hideAlert()
+        }) { Text(stringResource(MR.strings.for_me_only), color = MaterialTheme.colors.error) }
+      }
+    }
+  )
+}
+
 fun moderateMessageAlertDialog(chatItem: ChatItem, questionText: String, deleteMessage: (Long, CIDeleteMode) -> Unit) {
   AlertManager.shared.showAlertDialog(
     title = generalGetString(MR.strings.delete_member_message__question),
@@ -575,7 +707,10 @@ fun PreviewChatItemView() {
       useLinkPreviews = true,
       linkMode = SimplexLinkMode.DESCRIPTION,
       composeState = remember { mutableStateOf(ComposeState(useLinkPreviews = true)) },
+      revealed = remember { mutableStateOf(false) },
+      range = 0..1,
       deleteMessage = { _, _ -> },
+      deleteMessages = { _ -> },
       receiveFile = { _, _ -> },
       cancelFile = {},
       joinGroup = { _, _ -> },
@@ -606,7 +741,10 @@ fun PreviewChatItemViewDeletedContent() {
       useLinkPreviews = true,
       linkMode = SimplexLinkMode.DESCRIPTION,
       composeState = remember { mutableStateOf(ComposeState(useLinkPreviews = true)) },
+      revealed = remember { mutableStateOf(false) },
+      range = 0..1,
       deleteMessage = { _, _ -> },
+      deleteMessages = { _ -> },
       receiveFile = { _, _ -> },
       cancelFile = {},
       joinGroup = { _, _ -> },

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/item/FramedItemView.kt

@@ -202,10 +202,16 @@ fun FramedItemView(
       Column(Modifier.width(IntrinsicSize.Max)) {
         PriorityLayout(Modifier, CHAT_IMAGE_LAYOUT_ID) {
           if (ci.meta.itemDeleted != null) {
-            if (ci.meta.itemDeleted is CIDeleted.Moderated) {
-              FramedItemHeader(String.format(stringResource(MR.strings.moderated_item_description), ci.meta.itemDeleted.byGroupMember.chatViewName), true, painterResource(MR.images.ic_flag))
-            } else {
-              FramedItemHeader(stringResource(MR.strings.marked_deleted_description), true, painterResource(MR.images.ic_delete))
+            when (ci.meta.itemDeleted) {
+              is CIDeleted.Moderated -> {
+                FramedItemHeader(String.format(stringResource(MR.strings.moderated_item_description), ci.meta.itemDeleted.byGroupMember.chatViewName), true, painterResource(MR.images.ic_flag))
+              }
+              is CIDeleted.Blocked -> {
+                FramedItemHeader(stringResource(MR.strings.blocked_item_description), true, painterResource(MR.images.ic_back_hand))
+              }
+              else -> {
+                FramedItemHeader(stringResource(MR.strings.marked_deleted_description), true, painterResource(MR.images.ic_delete))
+              }
             }
           } else if (ci.meta.isLive) {
             FramedItemHeader(stringResource(MR.strings.live), false)

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/item/MarkedDeletedItemView.kt

@@ -2,25 +2,25 @@ package chat.simplex.common.views.chat.item
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.*
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.collectAsState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.*
 import androidx.compose.ui.text.font.FontStyle
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.desktop.ui.tooling.preview.Preview
+import androidx.compose.runtime.*
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
-import chat.simplex.common.model.CIDeleted
-import chat.simplex.common.model.ChatItem
+import chat.simplex.common.model.*
+import chat.simplex.common.model.ChatModel.getChatItemIndexOrNull
 import chat.simplex.common.ui.theme.*
 import chat.simplex.common.views.helpers.generalGetString
 import chat.simplex.res.MR
+import dev.icerock.moko.resources.compose.stringResource
 import kotlinx.datetime.Clock
 
 @Composable
-fun MarkedDeletedItemView(ci: ChatItem, timedMessagesTTL: Int?) {
+fun MarkedDeletedItemView(ci: ChatItem, timedMessagesTTL: Int?, revealed: MutableState<Boolean>) {
   val sentColor = CurrentColors.collectAsState().value.appColors.sentMessage
   val receivedColor = CurrentColors.collectAsState().value.appColors.receivedMessage
   Surface(
@@ -32,11 +32,7 @@ fun MarkedDeletedItemView(ci: ChatItem, timedMessagesTTL: Int?) {
       verticalAlignment = Alignment.CenterVertically
     ) {
       Box(Modifier.weight(1f, false)) {
-        if (ci.meta.itemDeleted is CIDeleted.Moderated) {
-          MarkedDeletedText(String.format(generalGetString(MR.strings.moderated_item_description), ci.meta.itemDeleted.byGroupMember.chatViewName))
-        } else {
-          MarkedDeletedText(generalGetString(MR.strings.marked_deleted_description))
-        }
+        MergedMarkedDeletedText(ci, revealed)
       }
       CIMetaView(ci, timedMessagesTTL)
     }
@@ -44,7 +40,41 @@ fun MarkedDeletedItemView(ci: ChatItem, timedMessagesTTL: Int?) {
 }
 
 @Composable
-private fun MarkedDeletedText(text: String) {
+private fun MergedMarkedDeletedText(chatItem: ChatItem, revealed: MutableState<Boolean>) {
+  var i = getChatItemIndexOrNull(chatItem)
+  val ciCategory = chatItem.mergeCategory
+  val text =  if (!revealed.value && ciCategory != null && i != null) {
+    val reversedChatItems = ChatModel.chatItems.asReversed()
+    var moderated = 0
+    var blocked = 0
+    var deleted = 0
+    val moderatedBy: MutableSet<String> = mutableSetOf()
+    while (i < reversedChatItems.size) {
+      val ci = reversedChatItems.getOrNull(i)
+      if (ci?.mergeCategory != ciCategory) break
+      when (val itemDeleted = ci.meta.itemDeleted ?: break) {
+        is CIDeleted.Moderated -> {
+          moderated += 1
+          moderatedBy.add(itemDeleted.byGroupMember.displayName)
+        }
+        is CIDeleted.Blocked -> blocked += 1
+        is CIDeleted.Deleted -> deleted += 1
+      }
+      i++
+    }
+    val total = moderated + blocked + deleted
+    if (total <= 1)
+      markedDeletedText(chatItem.meta)
+    else if (total == moderated)
+      stringResource(MR.strings.moderated_items_description).format(total, moderatedBy.joinToString(", "))
+    else if (total == blocked)
+      stringResource(MR.strings.blocked_items_description).format(total)
+    else
+      stringResource(MR.strings.marked_deleted_items_description).format(total)
+  } else {
+    markedDeletedText(chatItem.meta)
+  }
+
   Text(
     buildAnnotatedString {
       withStyle(SpanStyle(fontSize = 12.sp, fontStyle = FontStyle.Italic, color = MaterialTheme.colors.secondary)) { append(text) }
@@ -56,6 +86,16 @@ private fun MarkedDeletedText(text: String) {
   )
 }
 
+private fun markedDeletedText(meta: CIMeta): String =
+  when (meta.itemDeleted) {
+    is CIDeleted.Moderated ->
+      String.format(generalGetString(MR.strings.moderated_item_description), meta.itemDeleted.byGroupMember.displayName)
+    is CIDeleted.Blocked ->
+      generalGetString(MR.strings.blocked_item_description)
+    else ->
+      generalGetString(MR.strings.marked_deleted_description)
+  }
+
 @Preview/*(
   uiMode = Configuration.UI_MODE_NIGHT_YES,
   name = "Dark Mode"

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/helpers/Section.kt

@@ -98,6 +98,34 @@ fun SectionItemView(
   }
 }
 
+@Composable
+fun SectionItemViewLongClickable(
+  click: () -> Unit,
+  longClick: () -> Unit,
+  minHeight: Dp = 46.dp,
+  disabled: Boolean = false,
+  extraPadding: Boolean = false,
+  padding: PaddingValues = if (extraPadding)
+    PaddingValues(start = DEFAULT_PADDING * 1.7f, end = DEFAULT_PADDING)
+  else
+    PaddingValues(horizontal = DEFAULT_PADDING),
+  content: (@Composable RowScope.() -> Unit)
+) {
+  val modifier = Modifier
+    .fillMaxWidth()
+    .sizeIn(minHeight = minHeight)
+  Row(
+    if (disabled) {
+      modifier.padding(padding)
+    } else {
+      modifier.combinedClickable(onClick = click, onLongClick = longClick).onRightClick(longClick).padding(padding)
+    },
+    verticalAlignment = Alignment.CenterVertically
+  ) {
+    content()
+  }
+}
+
 @Composable
 fun SectionItemViewWithIcon(
   click: (() -> Unit)? = null,

apps/multiplatform/common/src/commonMain/resources/MR/base/strings.xml

@@ -30,7 +30,11 @@
   <!-- Item Content - ChatModel.kt -->
   <string name="deleted_description">deleted</string>
   <string name="marked_deleted_description">marked deleted</string>
+  <string name="marked_deleted_items_description">%d messages marked deleted</string>
   <string name="moderated_item_description">moderated by %s</string>
+  <string name="moderated_items_description">%d messages moderated by %s</string>
+  <string name="blocked_item_description">blocked</string>
+  <string name="blocked_items_description">%d messages blocked</string>
   <string name="sending_files_not_yet_supported">sending files is not supported yet</string>
   <string name="receiving_files_not_yet_supported">receiving files is not supported yet</string>
   <string name="sender_you_pronoun">you</string>
@@ -243,7 +247,9 @@
   <string name="hide_verb">Hide</string>
   <string name="allow_verb">Allow</string>
   <string name="moderate_verb">Moderate</string>
+  <string name="expand_verb">Expand</string>
   <string name="delete_message__question">Delete message?</string>
+  <string name="delete_messages__question">Delete %d messages?</string>
   <string name="delete_message_cannot_be_undone_warning">Message will be deleted - this cannot be undone!</string>
   <string name="delete_message_mark_deleted_warning">Message will be marked for deletion. The recipient(s) will be able to reveal this message.</string>
   <string name="delete_member_message__question">Delete member message?</string>
@@ -1132,9 +1138,14 @@
   <string name="snd_group_event_user_left">you left</string>
   <string name="snd_group_event_group_profile_updated">group profile updated</string>
 
+  <string name="rcv_group_event_1_member_connected">%s connected</string>
   <string name="rcv_group_event_2_members_connected">%s and %s connected</string>
   <string name="rcv_group_event_3_members_connected">%s, %s and %s connected</string>
   <string name="rcv_group_event_n_members_connected">%s, %s and %d other members connected</string>
+  <string name="rcv_group_events_count">%d group events</string>
+  <string name="rcv_group_and_other_events">and %d other events</string>
+  <string name="group_members_2">%s and %s</string>
+  <string name="group_members_n">%s, %s and %d members</string>
 
   <string name="rcv_group_event_open_chat">Open</string>
 
@@ -1250,10 +1261,21 @@
   <string name="recipient_colon_delivery_status">%s: %s</string>
 
   <!-- GroupMemberInfoView.kt -->
+  <string name="button_remove_member_question">Remove member?</string>
   <string name="button_remove_member">Remove member</string>
+
   <string name="button_send_direct_message">Send direct message</string>
   <string name="member_will_be_removed_from_group_cannot_be_undone">Member will be removed from group - this cannot be undone!</string>
   <string name="remove_member_confirmation">Remove</string>
+  <string name="remove_member_button">Remove member</string>
+  <string name="block_member_question">Block member?</string>
+  <string name="block_member_button">Block member</string>
+  <string name="block_member_confirmation">Block</string>
+  <string name="block_member_desc">All new messages from %s will be hidden!</string>
+  <string name="unblock_member_question">Unblock member?</string>
+  <string name="unblock_member_button">Unblock member</string>
+  <string name="unblock_member_confirmation">Unblock</string>
+  <string name="unblock_member_desc">Messages from %s will be shown!</string>
   <string name="member_info_section_title_member">MEMBER</string>
   <string name="role_in_group">Role</string>
   <string name="change_role">Change role</string>

apps/multiplatform/common/src/commonMain/resources/MR/images/ic_back_hand.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M504.5-45q-92 0-169.75-46T210-216.5l-147.5-247 19-19.5q15-15 36-16.5T156-489l129 93v-410.5q0-10.925 8.154-19.713 8.153-8.787 20.75-8.787 11.096 0 19.846 8.787 8.75 8.788 8.75 19.713v522l-185-134L258-250q37.5 68.5 103.318 108 65.817 39.5 143.182 39.5 112.792 0 192.896-78.104Q777.5-258.708 777.5-371v-395.688q0-10.812 8.154-19.562 8.153-8.75 20.75-8.75 11.096 0 19.846 8.787Q835-777.425 835-766.5V-371q0 136-96.832 231Q641.335-45 504.5-45Zm-55-446.5v-395q0-10.925 8.654-19.713 8.653-8.787 20.25-8.787 12.096 0 20.346 8.787Q507-897.425 507-886.5v395h-57.5Zm164.5 0v-355q0-10.925 8.154-19.713 8.153-8.787 20.75-8.787 11.096 0 19.846 8.787 8.75 8.788 8.75 19.713v355H614ZM468-297Z"/></svg>

apps/multiplatform/common/src/commonMain/resources/MR/images/ic_collapse_all.svg

@@ -0,0 +1 @@
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apps/multiplatform/common/src/commonMain/resources/MR/images/ic_do_not_touch.svg

@@ -0,0 +1 @@
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apps/multiplatform/common/src/commonMain/resources/MR/images/ic_expand_all.svg

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docs/rfcs/2023-09-25-groups-integrity.md

@@ -0,0 +1,124 @@
+# Groups integrity
+
+## Problems
+
+- Inconsistency of group state:
+  - group profile including group wide preferences,
+  - list of members and their roles.
+- Lack of group messages integrity - group member can send different messages to different members.
+
+Lack of group consistency leads to group federation both in terms of members list and content visible to different members, which leads to user frustration and lack of trust.
+
+Improvements to group design should provide:
+
+- Consistent group state.
+- Group messages integrity:
+  - integrity violations (different message sent to different members) should be identified and shown to users,
+  - missed messages should be requested to fill in gaps.
+
+## Design ideas and questions
+
+### Group messages integrity
+
+A message container to include member's message ID (ordered?), and list of IDs and hashes of parent messages.
+
+```haskell
+data MsgParentId = MsgParentId
+  { memberId :: MemberId,
+    msgId :: Int64, -- sequential message ID for parent message (among memberId member messages)
+    msgHash :: ByteString
+  }
+
+data MsgIds = MsgIds
+  { msgId :: Int64, -- sequential message ID for member's message
+    parentIds :: [MsgParentId]
+  }
+```
+
+Questions:
+  - What level of protocol should include MsgIds, and what messages should be included into integrity graph?
+    - Having it on AppMessage level would allow to include all protocol messages. But some protocol messages are sent with different content per member (XGrpMemIntro, XGrpMemFwd, probe messages) and would have different hash. Also they contain sensitive data such as invitation links and should not be forwarded anyway.
+    - If MsgIds is MsgContainer level, only XMsgNew would have it. This excludes other content messages such as updates, deletes, etc.
+    - Include it into specific "content" chat events - XMsgNew, XMsgFileCancel (unused), XMsgUpdate, XMsgDel, XMsgReact, XFile (not used anymore but was never fully deprecated), XFileCancel.
+    - Some new protocol level container, uniting above events?
+  - Should msgId be sequential integer? (It leaks metadata about member's previous activity in the group) Can SharedMsgId be used instead?
+  - Depending on number of parent messages, parentIds can become arbitrarily long and not fit into 16KB block, especially for messages containing profiles pictures.
+
+When receiving a message with unknown parent identifiers, client should request missing messages from the sender by sending XGrpRequestSkipped, including last seen message reference for each missing parent. When receiving XGrpRequestSkipped, member should forward requested messages up to last seen parent using XGrpRequested.
+
+```haskell
+-- include received parentId?
+XGrpRequestSkipped :: [MsgParentId] -> ChatMsgEvent 'Json
+
+data MsgRequestedParent = MsgRequested
+  { parentId :: MsgParentId,
+    msg :: MsgContainer -- content TBD based on scope of messages included into integrity graph. Full event?
+  }
+
+XGrpRequested :: MsgRequestedParent -> ChatMsgEvent 'Json
+```
+
+Questions:
+  - Depending on number of missing parents, XGrpRequestSkipped may not fit into 16KB block.
+  - There may be multiple skipped messages for a given member, should they be sent sequentially from oldest (following the one known to requesting member) to newest?
+  - XGrpRequested may not fit into 16KB block even if original MsgContainer / chat event did fit. On the other hand multiple XGrpRequested messages can be batched.
+  - Malicious group member may arbitrarily request (at any time or in response to a new message) any number of skipped messages by sending parentIds from the past and trigger receiving member to send a lot of traffic. There are already some automatic response events in protocol, but they are harder to abuse: XGrpMemFwd - requires cooperation with other member, or creating connection; receipts - can be turned off; probes - requires member having matching contact and being non incognito in group. Should the member receiving XGrpRequestSkipped protect from such abuse by limiting number of requested messages? Limiting number or requests from a specific member in time?
+  - By the time member requests skipped messages, sender may be offline. Should the requester send XGrpRequestSkipped to other members?
+    - together with the request to sender or after some period?
+    - to which members? - fraction of admins? all admins?
+  - Member receiving XGrpRequestSkipped may not have requested messages, for example:
+    - request is for the older parent id, and member never received it himself (was not part of the group then or has gap in place of this message), or has gap between sent message parent and requested parent.
+    - member deleted parent(s), e.g. via periodic cleanup, or by deleting specific messages.
+    - don't fully delete group message records while in group? instead only overwrite content?
+
+Message integrity is computed for received messages, can be updated on receiving requested message parents.
+
+```haskell
+data GroupMsgIntegrity
+  = GMIOk
+  | GMISkippedParents {skippedParents :: [MsgParentId]}
+  | GMIBadParentHash {knownParent :: MsgParentId, badParent :: MsgParentId} -- list?
+```
+
+```sql
+CREATE TABLE message_integrity_records( -- message_hashes? group_messages?
+  message_integrity_record_id INTEGER PRIMARY KEY,
+  message_id INTEGER NOT NULL REFERENCES messages ON DELETE CASCADE, -- SET NULL?
+  group_id INTEGER NOT NULL REFERENCES groups ON DELETE CASCADE,
+  group_member_id INTEGER NOT NULL REFERENCES group_members ON DELETE CASCADE,
+  member_id BLOB NOT NULL,
+  member_msg_id INTEGER NOT NULL, -- shared_msg_id?
+  msg_hash BLOB NOT NULL,
+  msg_integrity TEXT NOT NULL, -- computed for received messages, for sent always Ok?
+  created_at TEXT NOT NULL DEFAULT(datetime('now')),
+  updated_at TEXT NOT NULL DEFAULT(datetime('now'))
+);
+
+-- many to many table for message_integrity_records table
+-- (parent can have multiple children, child can have multiple parents)
+-- parent can be null if it wasn't received
+CREATE TABLE message_parents(
+  message_parent_id INTEGER PRIMARY KEY,
+  message_integrity_record_id INTEGER NOT NULL REFERENCES message_integrity_record_id ON DELETE CASCADE,
+  message_parent_integrity_record_id INTEGER REFERENCES message_integrity_record_id ON DELETE CASCADE,
+  msg_parent_member_id BLOB NOT NULL,
+  msg_parent_member_msg_id INTEGER NOT NULL,
+  msg_hash BLOB NOT NULL,
+  created_at TEXT NOT NULL DEFAULT(datetime('now')),
+  updated_at TEXT NOT NULL DEFAULT(datetime('now'))
+);
+```
+
+How should message integrity errors be displayed in UI?
+  - Displaying skipped parent errors would clutter UI due to delays in delivery. Probably they shouldn't be displayed.
+  - Integrity violations (hashes not matching) should be displayed on respective chat items.
+    - if integrity is on AppMessage level for all chat events - not all messages have corresponding chat items, create internal chat items?
+    - if it's on the level of content messages, updates / etc. can be high above in message history, deletes can be not visible at all (full delete).
+    - how to get reference to message via chat item when loading chat items? Integrity violation can be on a message different than chat item's created_by_msg_id message. For each chat item load integrity of all messages via chat_item_messages?
+  - If integrity errors are only displayed on integrity violations, for malicious member to work around it and send different message to different group members could he specify unknown (far into future or past) message id, instead of incorrect one? Sender then wouldn't respond with skipped parents (and other members wouldn't be able to) - how to differentiate between this case and skipper parent error that is to be ignored in UI?
+  - Should it be prohibited to not send MsgIds (to avoid message integrity check) if member protocol version supports it? Should it be prohibited at all and group with integrity be separated? How to distinguish between messages sent without integrity fields and messages with skipped parents in UI?
+  - Not showing skipped parents integrity error in UI would lead user to believe integrity is preserved, and integrity violation can be revealed later. If conversation is time sensitive member may react to message considering it conversation integrity wasn't breached, and integrity violation may be revealed later. Having eventual integrity may not be better than having no integrity at all, and may even be worse because it produces false assumptions regarding conversation integrity. The goal can be narrowed to only restoring missed messages (gaps), without calculating integrity.
+
+### Consistent group state
+
+TODO

docs/rfcs/2023-10-20-group-integrity.md

@@ -0,0 +1,229 @@
+# Group integrity
+
+3 level of DAGs:
+
+Owner
+  - group profile and permissions, admin invites and removals
+  - in case of gap vote before applying event
+
+Admin
+  - member invites and removals
+  - prohibit to add and remove admins
+  - in case of gap most destructive wins
+  - link to owner dag
+
+Messages
+  - in case of gap show history according to local graph, correct when owner or admin dag changes
+  - link to both admin and owner dags
+
+```haskell
+-- protocol
+data MsgParent = MsgParent
+  { memberId :: MemberId,
+    memberName :: String,         -- recipient can use to display message if they don't have member introduced;
+                                  -- optional?
+    sharedMsgId :: SharedMsgId,
+    msgHash :: ByteString,
+    msgBody :: String?            -- recipient can use to display message in case parent wasn't yet received;
+                                  -- sender can pack as many parents as fits into block
+    stored :: Bool                -- whether sender has message stored, and it can be requested
+  }
+
+data MsgIds = MsgIds              -- include into chat event
+  { sharedMsgId :: SharedMsgId,
+    ownerDAGMsgId :: SharedMsgId, -- list of parents?
+    adminDAGMsgId :: SharedMsgId,
+    parents :: [MsgParent]
+  }
+
+-- model
+data OwnerDAGEventParent
+  = ODEPKnown {eventId :: ?}      -- DB id? sharedMsgId?
+  | ODEPUnknown {eventId :: ?}
+
+data OwnerDAGEvent = DAGEvent
+  { eventId :: ?,
+    parents :: [OwnerDAGEventParent]
+  }
+
+data AdminDAGEventParent
+  = ADEPKnown {eventId :: ?}
+  | ADEPUnknown {eventId :: ?}
+
+data AdminDAGEvent = DAGEvent
+  { eventId :: ?,
+    ownerDAGEventId :: ?,         -- [OwnerDAGEventParent] - parentIds? ?
+    parents :: [AdminDAGEventParent]
+  }
+
+data MessagesDAGEventParent
+  = MDEPKnown {eventId :: ?}
+  | MDEPUnknown {eventId :: ?}
+
+data MessagesDAGEvent = DAGEvent
+  { eventId :: ?,
+    ownerDAGEventId :: ?,         -- [OwnerDAGEventParent] - parentIds? ?
+    adminDAGEventId :: ?,         -- [AdminDAGEventParent] - parentIds? ?
+    parents :: [MessagesDAGEventParent]
+  }
+```
+
+How to restore from destructive messages?
+Even if all message parents are known, destructive logic of message should be applied after other members refer it.
+
+How to workaround members maliciously referring non-existent parents?
+For example, this can lead to an owner preventing group updates.
+
+```
+-- should dag be maintained in memory? older events to be removed
+-- read on event?
+-- how long into past to get dag?
+
+ClassifiedEvent = OwnerEvent | AdminEvent | MsgEvent
+
+def processEvent(e: Event) =
+  classifiedEvent <- classifyEvent(e)
+  case classifiedEvent of
+    OwnerEvent oe -> processOwnerEvent(oe)
+    AdminEvent ae -> processAdminEvent(ae)
+    MsgEvent me -> processMsgEvent(me)
+
+def classifyEvent(e: Event) -> ClassifiedEvent? =
+  case e of
+    XMsgNew         -> MsgEvent
+    XMsgFileDescr   -> Nothing       -- different per member
+    XMsgFileCancel  -> MsgEvent
+    XMsgUpdate      -> MsgEvent
+    XMsgDel         -> MsgEvent
+    XMsgReact       -> MsgEvent
+    XFile           -> MsgEvent
+    XFileCancel     -> MsgEvent
+    XFileAcptInv    -> Nothing       -- different per member
+    XGrpMemNew      -> OwnerEvent    -- sent by owner, new member is admin or owner
+                       or AdminEvent -- sent by admin (or by owner and new member role is less than admin?)
+                       -- problem: if member role changes, members can add event to different dags
+                       -- what should define member role?
+    XGrpMemIntro    -> Nothing       -- received only by invitee
+    XGrpMemInv      -> Nothing       -- received only by host
+    XGrpMemFwd      -> Nothing       -- different per member; not received by invitee
+    XGrpMemRole     -> OwnerEvent    -- sent by owner about owner or admin
+                       or AdminEvent -- sent by admin (or by owner about member with role less than admin?)
+    XGrpMemDel      -> OwnerEvent    -- sent by owner about owner or admin
+                       or AdminEvent -- sent by admin (or by owner about member with role less than admin?)
+    XGrpLeave       -> MsgEvent
+    XGrpDel         -> OwnerEvent
+    XGrpInfo        -> OwnerEvent
+    XGrpDirectInv   -> Nothing       -- received by single member
+    XInfoProbe      -> Nothing       -- per member
+    XInfoProbeCheck -> Nothing       -- per member
+    XInfoProbeOk    -> Nothing       -- per member
+    BFileChunk      -> Nothing       -- could be MsgEvent?
+    _               -> Nothing       -- not supported in groups
+
+-- # owner events
+
+def processOwnerEvent(oe: OwnerEvent) =
+  process every owner event after owners reach consensus
+
+// def processOwnerEvent(oe: OwnerEvent) =
+//   addOwnerDagEvent(oe)
+//   applyOwnerDagEvent(oe)
+// 
+// def addOwnerDagEvent(oe: OwnerEvent) =
+//   if (any parent of oe not in dag):
+//     buffer until all parents are in ownerDag
+//   else
+//     add oe to ownerDag
+// 
+// def applyOwnerDagEvent(oe: OwnerEvent) =
+//   case oe of
+//     -- process XGrpMemNew, XGrpMemRole, XGrpMemDel same as for admin dag (see below), or should vote for all events?
+//     XGrpMemNew -> ...
+//     XGrpMemRole -> ...
+//     XGrpMemDel -> ...
+//     -- how to vote - to depend on action (group - manual, update - automatic?);
+//     -- wait for voting always, or if event has unknown parents? (gaps in dag)
+//     -- how to treat delayed integrity violation - owner sending message to select members
+//     XGrpDel ->
+//       -- create "pending group deletion", wait for confirmation from majority of owners?
+//       -- new protocol requiring user action from other owners?
+//     XGrpInfo ->
+//       -- create "unconfirmed group profile update", remember prev group profile
+//       -- remove from "unconfirmed group profile update" when this event is in dag and not a leaf?
+//       -- if another group profile update event is received, revert "unconfirmed" event, don't apply new
+//       -- so if more than one update is received while dag is not merged to single vertice, all updates are not applied
+//       --   - this would likely lock out owners from any future updates
+//       --   - merge to new starting point after some time passes?
+//       --   - mark parents that are never received and so always block graph merging as special type?
+
+-- # admin events
+
+def processAdminEvent(ae: AdminEvent) =
+  lookup in owner dag - does member still have permission?
+  addAdminDagEvent(ae)
+  applyAdminDagEvent(ae)
+
+def addAdminDagEvent(ae: AdminEvent) =
+  if (any parent of ae not in dag):
+    buffer until all parents are in adminDag
+  else
+    add ae to adminDag
+
+def applyAdminDagEvent(ae: AdminEvent) =
+  case ae of
+    XGrpMemNew ->
+      -- handles case where messages from 2 admins about member addition and deletion arrive out of order
+      if member is not in "unconfirmed member deletions":
+        add member
+    XGrpMemRole ->
+      add role change to "unconfirmed role change"
+      -- remove from "unconfirmed role change" when this event is in dag and not a leaf?
+      if another role change already in "unconfirmed role change":
+        if new role is less than role in "unconfirmed role change":
+          change role -- role change applies in direction of lower role
+    XGrpMemDel ->
+      add member to "unconfirmed member deletions"
+      -- remove from "unconfirmed member deletions" when this event is in dag and not a leaf?
+      if member found by memberId:
+        delete member
+
+-- ^ problem: if later admin event turns out to fail integrity check, how to revert it?
+-- member deletion: don't apply until in graph and not a leaf
+-- role change: remember previous role and revert
+-- member addition: delete member
+
+-- # message events
+
+def processMsgEvent(me: MsgEvent) =
+  lookup points in owner and admin dag?
+  - does member have permission to send event? (role changed/removed)
+  addMsgDagEvent(me)
+  applyMsgEvent(me)
+
+def addMsgDagEvent(me: MsgEvent) =
+  for me.parents not in msgDag:
+    add MDEPUnknown parent to msgDag
+  add me to msgDag
+
+def applyMsgEvent(me: MsgEvent) =
+  case me of
+    XMsgNew         -> message to view
+                       -- start process waiting for missing parents; if parents are not received:
+                       --   can be shown as integrity violation if parents are not received
+                       -- can be shown as integrity violation if other members don't refer it?
+    XMsgFileCancel  -> cancel file immediately
+                       -- wait for missing parents / referrals similarly to XMsgNew
+                       -- restart file reception on integrity violation?
+    XMsgUpdate      -> update to view -- same as XMsgNew
+    XMsgDel         -> mark deleted, don't apply full delete until parents/referrals are received?
+    XMsgReact       -> to view -- same as XMsgNew
+    XFile           -> -- deprecate?
+    XFileCancel     -> cancel -- same as XMsgFileCancel
+    XGrpLeave       -> mark member as left, don't delete member connection immediately
+                       -- member may try to maliciously remove connections selectively
+                       -- wait for integrity check
+```
+
+# Admin blockchain
+
+Suppose admin DAG is replaced with blockchain, with a conflict resolution protocol to provide consistency of membership changes. Take Simplex (not to confuse with SimpleX chat) protocol (https://simplex.blog/). To reach BFT consensus and make progress, 2n/3 votes on block proposals are required, and it's assumed `f < n/3` where f is number of malicious actors. In a highly asynchronous setting of decentralized groups operated by mobile devices, progress seems unlikely or very slow. Should "admin participation" be hosted?

src/Simplex/Chat/Markdown.hs

@@ -16,7 +16,7 @@ import qualified Data.Aeson as J
 import qualified Data.Aeson.TH as JQ
 import Data.Attoparsec.Text (Parser)
 import qualified Data.Attoparsec.Text as A
-import Data.Char (isDigit)
+import Data.Char (isDigit, isPunctuation)
 import Data.Either (fromRight)
 import Data.Functor (($>))
 import Data.List (intercalate, foldl')
@@ -214,11 +214,15 @@ markdownP = mconcat <$> A.many' fragmentP
     wordMD :: Text -> Markdown
     wordMD s
       | T.null s = unmarked s
-      | isUri s = case strDecode $ encodeUtf8 s of
-        Right cReq -> markdown (simplexUriFormat cReq) s
-        _ -> markdown Uri s
+      | isUri s =
+        let t = T.takeWhileEnd isPunctuation s
+            uri = uriMarkdown $ T.dropWhileEnd isPunctuation s
+         in if T.null t then uri else uri :|: unmarked t
       | isEmail s = markdown Email s
       | otherwise = unmarked s
+    uriMarkdown s = case strDecode $ encodeUtf8 s of
+      Right cReq -> markdown (simplexUriFormat cReq) s
+      _ -> markdown Uri s
     isUri s = T.length s >= 10 && any (`T.isPrefixOf` s) ["http://", "https://", "simplex:/"]
     isEmail s = T.any (== '@') s && Email.isValid (encodeUtf8 s)
     noFormat = pure . unmarked

tests/ChatTests/Files.hs

@@ -1393,10 +1393,16 @@ testXFTPMarkToReceive = do
       alice <## "completed uploading file 1 (test.pdf) for bob"
       bob #$> ("/_set_file_to_receive 1", id, "ok")
 
+      threadDelay 100000
+
       bob ##> "/_stop"
       bob <## "chat stopped"
+
       bob #$> ("/_files_folder ./tests/tmp/bob_files", id, "ok")
       bob #$> ("/_temp_folder ./tests/tmp/bob_xftp", id, "ok")
+
+      threadDelay 100000
+
       bob ##> "/_start"
       bob <## "chat started"
 

tests/MarkdownTests.hs

@@ -144,6 +144,8 @@ textWithUri :: Spec
 textWithUri = describe "text with Uri" do
   it "correct markdown" do
     parseMarkdown "https://simplex.chat" `shouldBe` uri "https://simplex.chat"
+    parseMarkdown "https://simplex.chat." `shouldBe` uri "https://simplex.chat" <> "."
+    parseMarkdown "https://simplex.chat, hello" `shouldBe` uri "https://simplex.chat" <> ", hello"
     parseMarkdown "http://simplex.chat" `shouldBe` uri "http://simplex.chat"
     parseMarkdown "this is https://simplex.chat" `shouldBe` "this is " <> uri "https://simplex.chat"
     parseMarkdown "https://simplex.chat site" `shouldBe` uri "https://simplex.chat" <> " site"