Add iOS profile leave flow

apps/ios/TeleTuiIOS/Sources/TeleTuiIOSCore/Views.swift

@@ -173,7 +173,10 @@ public struct ChatListView: View {
             }
         } detail: {
             if let selectedChat {
-                ChatDetailView(viewModel: ChatViewModel(chat: selectedChat, bridge: bridge), bridge: bridge)
+                ChatDetailView(viewModel: ChatViewModel(chat: selectedChat, bridge: bridge), bridge: bridge) {
+                    self.selectedChat = nil
+                    Task { await viewModel.load() }
+                }
             } else {
                 Text("Select a chat")
             }
@@ -327,15 +330,18 @@ public struct ChatDetailView: View {
     @State private var deleteCandidate: Message?
     @State private var forwardCandidate: Message?
     @State private var forwardChatIdText = ""
+    private let onChatLeft: () -> Void
 
     public init(
         viewModel: ChatViewModel,
         bridge: SessionBridge,
-        clipboard: ClipboardWriting = SystemClipboardWriter()
+        clipboard: ClipboardWriting = SystemClipboardWriter(),
+        onChatLeft: @escaping () -> Void = {}
     ) {
         _viewModel = StateObject(wrappedValue: viewModel)
         self.bridge = bridge
         self.clipboard = clipboard
+        self.onChatLeft = onChatLeft
         _profileViewModel = StateObject(wrappedValue: ProfileViewModel(bridge: bridge))
     }
 
@@ -437,7 +443,10 @@ public struct ChatDetailView: View {
             }
         }
         .sheet(isPresented: $showsProfile) {
-            ProfileView(viewModel: profileViewModel)
+            ProfileView(viewModel: profileViewModel, chatId: viewModel.chat.id) {
+                showsProfile = false
+                onChatLeft()
+            }
         }
         .alert("Edit Message", isPresented: editAlertBinding) {
             TextField("Message", text: $editedText)
@@ -852,9 +861,14 @@ public struct ComposeBar: View {
 
 public struct ProfileView: View {
     @ObservedObject public var viewModel: ProfileViewModel
+    public var chatId: Int64?
+    public var onLeave: () -> Void
+    @State private var confirmsLeave = false
 
-    public init(viewModel: ProfileViewModel) {
+    public init(viewModel: ProfileViewModel, chatId: Int64? = nil, onLeave: @escaping () -> Void = {}) {
         self.viewModel = viewModel
+        self.chatId = chatId
+        self.onLeave = onLeave
     }
 
     public var body: some View {
@@ -877,11 +891,33 @@ public struct ProfileView: View {
                             Text("\(memberCount) members")
                         }
                     }
+                    if profile.isGroup, chatId != nil {
+                        Section {
+                            Button(role: .destructive) {
+                                confirmsLeave = true
+                            } label: {
+                                Label("Leave Chat", systemImage: "rectangle.portrait.and.arrow.right")
+                            }
+                        }
+                    }
                 } else {
                     ProgressView()
                 }
             }
             .navigationTitle("Profile")
+            .alert("Leave Chat", isPresented: $confirmsLeave) {
+                Button("Leave", role: .destructive) {
+                    if let chatId {
+                        Task {
+                            await viewModel.leave(chatId: chatId)
+                            if viewModel.errorMessage == nil {
+                                onLeave()
+                            }
+                        }
+                    }
+                }
+                Button("Cancel", role: .cancel) {}
+            }
         }
     }
 }