Add SwiftUI iOS app shell

.gitignore

@@ -15,3 +15,4 @@ credentials
 # Commit snapshots, but not the .new files
 tests/**/*.snap.new
 *.snap.new
+apps/ios/TeleTuiIOS/.build/

apps/ios/TeleTuiIOS/Package.swift

@@ -0,0 +1,27 @@
+// swift-tools-version: 6.0
+
+import PackageDescription
+
+let package = Package(
+    name: "TeleTuiIOS",
+    platforms: [
+        .iOS(.v17),
+        .macOS(.v14),
+    ],
+    products: [
+        .library(name: "TeleTuiIOSCore", targets: ["TeleTuiIOSCore"]),
+        .executable(name: "TeleTuiIOSApp", targets: ["TeleTuiIOSApp"]),
+        .executable(name: "TeleTuiIOSSmokeTests", targets: ["TeleTuiIOSSmokeTests"]),
+    ],
+    targets: [
+        .target(name: "TeleTuiIOSCore"),
+        .executableTarget(
+            name: "TeleTuiIOSApp",
+            dependencies: ["TeleTuiIOSCore"]
+        ),
+        .executableTarget(
+            name: "TeleTuiIOSSmokeTests",
+            dependencies: ["TeleTuiIOSCore"]
+        ),
+    ]
+)

apps/ios/TeleTuiIOS/README.md

@@ -0,0 +1,22 @@
+# TeleTuiIOS
+
+Native SwiftUI shell for the iOS client.
+
+Current scope:
+
+- SwiftUI + MVVM app shell backed by a deterministic fake bridge.
+- Auth, chat list, folder selector, chat detail, compose bar, profile sheet, and account switcher shell.
+- iOS-oriented storage boundaries: Keychain-shaped credential API and Application Support account paths.
+
+Build and smoke-test the portable shell:
+
+```bash
+cd apps/ios/TeleTuiIOS
+swift run TeleTuiIOSSmokeTests
+```
+
+Simulator/device build is currently blocked on this machine because `xcodebuild -version` fails with:
+
+```text
+xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance
+```

apps/ios/TeleTuiIOS/Sources/TeleTuiIOSApp/TeleTuiIOSApp.swift

@@ -0,0 +1,21 @@
+import SwiftUI
+import TeleTuiIOSCore
+
+@main
+struct TeleTuiIOSApp: App {
+    var body: some Scene {
+        WindowGroup {
+            RootView(store: makeStore())
+        }
+    }
+
+    private func makeStore() -> SessionStore {
+        let paths = AppStoragePaths()
+        let account = Account(
+            id: "fake",
+            displayName: "Fake",
+            databasePath: paths.databasePath(for: "fake")
+        )
+        return SessionStore(account: account, bridge: FakeSessionBridge(auth: .ready))
+    }
+}

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

@@ -0,0 +1,128 @@
+import Foundation
+
+public protocol SessionBridge: Sendable {
+    func authState() async throws -> AuthState
+    func pollEvents() async throws -> [SessionEvent]
+    func sendPhoneNumber(_ phone: String) async throws
+    func sendCode(_ code: String) async throws
+    func sendPassword(_ password: String) async throws
+    func loadFolders() async throws -> [Folder]
+    func loadChats(folderId: Int32?) async throws -> [ChatSummary]
+    func loadHistory(chatId: Int64) async throws -> [Message]
+    func openProfile(chatId: Int64) async throws -> Profile
+    func sendMessage(chatId: Int64, text: String, replyToMessageId: Int64?) async throws -> Message
+}
+
+public actor FakeSessionBridge: SessionBridge {
+    private var auth: AuthState
+    private var chats: [ChatSummary]
+    private var messages: [Int64: [Message]]
+    private var events: [SessionEvent]
+    private var nextMessageId: Int64
+
+    public init(auth: AuthState = .waitPhoneNumber) {
+        self.auth = auth
+        let saved = ChatSummary(
+            id: 1,
+            title: "Saved Messages",
+            username: "saved",
+            lastMessage: "Hello from fake TDLib",
+            unreadCount: 1,
+            isPinned: true
+        )
+        let team = ChatSummary(
+            id: 2,
+            title: "iOS Team",
+            lastMessage: "Bridge smoke is green",
+            unreadMentionCount: 1,
+            folderIds: [0, 2],
+            isMuted: true,
+            draft: Draft(chatId: 2, text: "Follow up")
+        )
+        self.chats = [saved, team]
+        self.messages = [
+            1: [
+                Message(id: 1, chatId: 1, senderName: "Alice", text: "Hello from fake TDLib", isOutgoing: false, isRead: false)
+            ],
+            2: [
+                Message(id: 2, chatId: 2, senderName: "Mikhail", text: "Bridge smoke is green", isOutgoing: true)
+            ],
+        ]
+        self.events = [.chatListChanged([saved, team])]
+        self.nextMessageId = 3
+    }
+
+    public func authState() async throws -> AuthState {
+        auth
+    }
+
+    public func pollEvents() async throws -> [SessionEvent] {
+        let drained = events
+        events.removeAll()
+        return drained
+    }
+
+    public func sendPhoneNumber(_ phone: String) async throws {
+        auth = .waitCode
+        events.append(.authChanged(auth))
+    }
+
+    public func sendCode(_ code: String) async throws {
+        auth = .waitPassword
+        events.append(.authChanged(auth))
+    }
+
+    public func sendPassword(_ password: String) async throws {
+        auth = .ready
+        events.append(.authChanged(auth))
+    }
+
+    public func loadFolders() async throws -> [Folder] {
+        [Folder(id: 0, name: "All"), Folder(id: 2, name: "Work")]
+    }
+
+    public func loadChats(folderId: Int32?) async throws -> [ChatSummary] {
+        let result = folderId.map { folderId in
+            chats.filter { $0.folderIds.contains(folderId) }
+        } ?? chats
+        events.append(.chatListChanged(result))
+        return result
+    }
+
+    public func loadHistory(chatId: Int64) async throws -> [Message] {
+        messages[chatId] ?? []
+    }
+
+    public func openProfile(chatId: Int64) async throws -> Profile {
+        let chat = chats.first { $0.id == chatId }
+        let profile = Profile(
+            chatId: chatId,
+            title: chat?.title ?? "Unknown",
+            username: chat?.username,
+            bio: chatId == 1 ? "Fake profile for the iOS app shell" : "Team chat",
+            isGroup: chatId != 1,
+            memberCount: chatId == 1 ? nil : 4
+        )
+        events.append(.profileLoaded(profile))
+        return profile
+    }
+
+    public func sendMessage(chatId: Int64, text: String, replyToMessageId: Int64?) async throws -> Message {
+        let message = Message(
+            id: nextMessageId,
+            chatId: chatId,
+            senderName: "Me",
+            text: text,
+            isOutgoing: true,
+            replyText: replyToMessageId.map { "Reply to #\($0)" }
+        )
+        nextMessageId += 1
+        messages[chatId, default: []].append(message)
+        if let index = chats.firstIndex(where: { $0.id == chatId }) {
+            chats[index].lastMessage = text
+            chats[index].draft = nil
+        }
+        events.append(.messageAdded(chatId, message))
+        return message
+    }
+}

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

@@ -0,0 +1,168 @@
+import Foundation
+
+public struct Account: Identifiable, Equatable, Sendable {
+    public var id: String
+    public var displayName: String
+    public var databasePath: URL
+
+    public init(id: String, displayName: String, databasePath: URL) {
+        self.id = id
+        self.displayName = displayName
+        self.databasePath = databasePath
+    }
+}
+
+public enum AuthState: Equatable, Sendable {
+    case waitTdlibParameters
+    case waitPhoneNumber
+    case waitCode
+    case waitPassword
+    case ready
+    case closed
+    case error(String)
+}
+
+public struct Folder: Identifiable, Equatable, Sendable {
+    public var id: Int32
+    public var name: String
+
+    public init(id: Int32, name: String) {
+        self.id = id
+        self.name = name
+    }
+}
+
+public struct Draft: Hashable, Sendable {
+    public var chatId: Int64
+    public var text: String
+
+    public init(chatId: Int64, text: String) {
+        self.chatId = chatId
+        self.text = text
+    }
+}
+
+public struct ChatSummary: Identifiable, Hashable, Sendable {
+    public var id: Int64
+    public var title: String
+    public var username: String?
+    public var lastMessage: String
+    public var unreadCount: Int32
+    public var unreadMentionCount: Int32
+    public var isPinned: Bool
+    public var folderIds: [Int32]
+    public var isMuted: Bool
+    public var draft: Draft?
+
+    public init(
+        id: Int64,
+        title: String,
+        username: String? = nil,
+        lastMessage: String,
+        unreadCount: Int32 = 0,
+        unreadMentionCount: Int32 = 0,
+        isPinned: Bool = false,
+        folderIds: [Int32] = [0],
+        isMuted: Bool = false,
+        draft: Draft? = nil
+    ) {
+        self.id = id
+        self.title = title
+        self.username = username
+        self.lastMessage = lastMessage
+        self.unreadCount = unreadCount
+        self.unreadMentionCount = unreadMentionCount
+        self.isPinned = isPinned
+        self.folderIds = folderIds
+        self.isMuted = isMuted
+        self.draft = draft
+    }
+}
+
+public struct Reaction: Equatable, Sendable {
+    public var emoji: String
+    public var count: Int32
+    public var isChosen: Bool
+
+    public init(emoji: String, count: Int32, isChosen: Bool) {
+        self.emoji = emoji
+        self.count = count
+        self.isChosen = isChosen
+    }
+}
+
+public struct Message: Identifiable, Equatable, Sendable {
+    public var id: Int64
+    public var chatId: Int64
+    public var senderName: String
+    public var text: String
+    public var isOutgoing: Bool
+    public var isRead: Bool
+    public var editDate: Int32?
+    public var replyText: String?
+    public var forwardSenderName: String?
+    public var reactions: [Reaction]
+
+    public init(
+        id: Int64,
+        chatId: Int64,
+        senderName: String,
+        text: String,
+        isOutgoing: Bool,
+        isRead: Bool = true,
+        editDate: Int32? = nil,
+        replyText: String? = nil,
+        forwardSenderName: String? = nil,
+        reactions: [Reaction] = []
+    ) {
+        self.id = id
+        self.chatId = chatId
+        self.senderName = senderName
+        self.text = text
+        self.isOutgoing = isOutgoing
+        self.isRead = isRead
+        self.editDate = editDate
+        self.replyText = replyText
+        self.forwardSenderName = forwardSenderName
+        self.reactions = reactions
+    }
+}
+
+public struct Profile: Equatable, Sendable {
+    public var chatId: Int64
+    public var title: String
+    public var username: String?
+    public var bio: String?
+    public var isGroup: Bool
+    public var memberCount: Int32?
+
+    public init(
+        chatId: Int64,
+        title: String,
+        username: String? = nil,
+        bio: String? = nil,
+        isGroup: Bool = false,
+        memberCount: Int32? = nil
+    ) {
+        self.chatId = chatId
+        self.title = title
+        self.username = username
+        self.bio = bio
+        self.isGroup = isGroup
+        self.memberCount = memberCount
+    }
+}
+
+public enum SessionEvent: Equatable, Sendable {
+    case authChanged(AuthState)
+    case chatListChanged([ChatSummary])
+    case messageAdded(Int64, Message)
+    case profileLoaded(Profile)
+}
+
+public enum NetworkState: Equatable, Sendable {
+    case waitingForNetwork
+    case connecting
+    case updating
+    case ready
+}

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

@@ -0,0 +1,38 @@
+import Foundation
+
+public struct AppStoragePaths: Sendable {
+    public var root: URL
+
+    public init(root: URL = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask)[0].appendingPathComponent("TeleTuiIOS")) {
+        self.root = root
+    }
+
+    public func databasePath(for accountId: String) -> URL {
+        root
+            .appendingPathComponent("Accounts", isDirectory: true)
+            .appendingPathComponent(accountId, isDirectory: true)
+            .appendingPathComponent("tdlib", isDirectory: true)
+    }
+}
+
+public protocol CredentialStore: Sendable {
+    func save(account: Account) async throws
+    func loadAccounts() async throws -> [Account]
+}
+
+public actor InMemoryCredentialStore: CredentialStore {
+    private var accounts: [Account]
+
+    public init(accounts: [Account] = []) {
+        self.accounts = accounts
+    }
+
+    public func save(account: Account) async throws {
+        accounts.removeAll { $0.id == account.id }
+        accounts.append(account)
+    }
+
+    public func loadAccounts() async throws -> [Account] {
+        accounts
+    }
+}

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

@@ -0,0 +1,203 @@
+import Foundation
+import Combine
+
+@MainActor
+public final class SessionStore: ObservableObject {
+    @Published public private(set) var account: Account
+    @Published public private(set) var authState: AuthState = .waitTdlibParameters
+    @Published public private(set) var networkState: NetworkState = .ready
+    @Published public private(set) var errorMessage: String?
+
+    public let bridge: SessionBridge
+
+    public init(account: Account, bridge: SessionBridge) {
+        self.account = account
+        self.bridge = bridge
+    }
+
+    public func refreshAuthState() async {
+        do {
+            authState = try await bridge.authState()
+            errorMessage = nil
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+    }
+
+    public func apply(events: [SessionEvent]) {
+        for event in events {
+            if case let .authChanged(state) = event {
+                authState = state
+            }
+        }
+    }
+}
+
+@MainActor
+public final class AuthViewModel: ObservableObject {
+    @Published public var phone = ""
+    @Published public var code = ""
+    @Published public var password = ""
+    @Published public private(set) var isLoading = false
+    @Published public private(set) var errorMessage: String?
+
+    private let store: SessionStore
+
+    public init(store: SessionStore) {
+        self.store = store
+    }
+
+    public func submitCurrentStep() async {
+        isLoading = true
+        defer { isLoading = false }
+
+        do {
+            switch store.authState {
+            case .waitPhoneNumber:
+                try await store.bridge.sendPhoneNumber(phone)
+            case .waitCode:
+                try await store.bridge.sendCode(code)
+            case .waitPassword:
+                try await store.bridge.sendPassword(password)
+            default:
+                break
+            }
+            let events = try await store.bridge.pollEvents()
+            store.apply(events: events)
+            errorMessage = nil
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+    }
+}
+
+@MainActor
+public final class ChatListViewModel: ObservableObject {
+    @Published public private(set) var folders: [Folder] = []
+    @Published public private(set) var chats: [ChatSummary] = []
+    @Published public var selectedFolderId: Int32?
+    @Published public var searchText = ""
+    @Published public private(set) var isLoading = false
+    @Published public private(set) var errorMessage: String?
+
+    private let bridge: SessionBridge
+
+    public init(bridge: SessionBridge) {
+        self.bridge = bridge
+    }
+
+    public var filteredChats: [ChatSummary] {
+        guard !searchText.isEmpty else {
+            return chats
+        }
+        return chats.filter { chat in
+            chat.title.localizedCaseInsensitiveContains(searchText)
+                || (chat.username?.localizedCaseInsensitiveContains(searchText) ?? false)
+        }
+    }
+
+    public func load() async {
+        isLoading = true
+        defer { isLoading = false }
+
+        do {
+            folders = try await bridge.loadFolders()
+            chats = try await bridge.loadChats(folderId: selectedFolderId)
+            errorMessage = nil
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+    }
+}
+
+@MainActor
+public final class ChatViewModel: ObservableObject {
+    @Published public private(set) var chat: ChatSummary
+    @Published public private(set) var messages: [Message] = []
+    @Published public var composeText: String
+    @Published public var replyTo: Message?
+    @Published public private(set) var isLoading = false
+    @Published public private(set) var errorMessage: String?
+
+    private let bridge: SessionBridge
+
+    public init(chat: ChatSummary, bridge: SessionBridge) {
+        self.chat = chat
+        self.bridge = bridge
+        self.composeText = chat.draft?.text ?? ""
+    }
+
+    public func load() async {
+        isLoading = true
+        defer { isLoading = false }
+
+        do {
+            messages = try await bridge.loadHistory(chatId: chat.id)
+            errorMessage = nil
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+    }
+
+    public func send() async {
+        let text = composeText.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard !text.isEmpty else {
+            return
+        }
+
+        do {
+            let sent = try await bridge.sendMessage(
+                chatId: chat.id,
+                text: text,
+                replyToMessageId: replyTo?.id
+            )
+            messages.append(sent)
+            composeText = ""
+            replyTo = nil
+            errorMessage = nil
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+    }
+}
+
+@MainActor
+public final class ProfileViewModel: ObservableObject {
+    @Published public private(set) var profile: Profile?
+    @Published public private(set) var isLoading = false
+    @Published public private(set) var errorMessage: String?
+
+    private let bridge: SessionBridge
+
+    public init(bridge: SessionBridge) {
+        self.bridge = bridge
+    }
+
+    public func load(chatId: Int64) async {
+        isLoading = true
+        defer { isLoading = false }
+
+        do {
+            profile = try await bridge.openProfile(chatId: chatId)
+            errorMessage = nil
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+    }
+}
+
+@MainActor
+public final class MediaViewModel: ObservableObject {
+    @Published public private(set) var activePhotoPath: String?
+    @Published public private(set) var activeVoicePath: String?
+
+    public init() {}
+
+    public func showPhoto(path: String) {
+        activePhotoPath = path
+    }
+
+    public func showVoice(path: String) {
+        activeVoicePath = path
+    }
+}

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

@@ -0,0 +1,370 @@
+import SwiftUI
+
+public struct RootView: View {
+    @StateObject private var store: SessionStore
+    @StateObject private var authViewModel: AuthViewModel
+    @StateObject private var chatListViewModel: ChatListViewModel
+
+    public init(store: SessionStore) {
+        let authViewModel = AuthViewModel(store: store)
+        let chatListViewModel = ChatListViewModel(bridge: store.bridge)
+        _store = StateObject(wrappedValue: store)
+        _authViewModel = StateObject(wrappedValue: authViewModel)
+        _chatListViewModel = StateObject(wrappedValue: chatListViewModel)
+    }
+
+    public var body: some View {
+        Group {
+            switch store.authState {
+            case .ready:
+                ChatListView(viewModel: chatListViewModel, bridge: store.bridge)
+            default:
+                AuthView(state: store.authState, viewModel: authViewModel)
+            }
+        }
+        .task {
+            await store.refreshAuthState()
+        }
+    }
+}
+
+public struct AuthView: View {
+    public var state: AuthState
+    @ObservedObject public var viewModel: AuthViewModel
+
+    public init(state: AuthState, viewModel: AuthViewModel) {
+        self.state = state
+        self.viewModel = viewModel
+    }
+
+    public var body: some View {
+        VStack(spacing: 16) {
+            Text("Telegram")
+                .font(.largeTitle)
+                .fontWeight(.semibold)
+
+            authField
+
+            Button(action: {
+                Task { await viewModel.submitCurrentStep() }
+            }) {
+                Text(buttonTitle)
+                    .frame(maxWidth: .infinity)
+            }
+            .buttonStyle(.borderedProminent)
+            .disabled(viewModel.isLoading || !canSubmit)
+
+            if let errorMessage = viewModel.errorMessage {
+                Text(errorMessage)
+                    .font(.footnote)
+                    .foregroundStyle(.red)
+            }
+        }
+        .padding()
+    }
+
+    @ViewBuilder
+    private var authField: some View {
+        switch state {
+        case .waitPhoneNumber, .waitTdlibParameters:
+            TextField("Phone number", text: $viewModel.phone)
+                .textContentType(.telephoneNumber)
+                .textFieldStyle(.roundedBorder)
+        case .waitCode:
+            TextField("Code", text: $viewModel.code)
+                .textContentType(.oneTimeCode)
+                .textFieldStyle(.roundedBorder)
+        case .waitPassword:
+            SecureField("Password", text: $viewModel.password)
+                .textContentType(.password)
+                .textFieldStyle(.roundedBorder)
+        case .ready:
+            Text("Ready")
+        case .closed:
+            Text("Session closed")
+        case let .error(message):
+            Text(message)
+                .foregroundStyle(.red)
+        }
+    }
+
+    private var buttonTitle: String {
+        switch state {
+        case .waitPhoneNumber, .waitTdlibParameters:
+            "Continue"
+        case .waitCode:
+            "Verify"
+        case .waitPassword:
+            "Unlock"
+        default:
+            "Continue"
+        }
+    }
+
+    private var canSubmit: Bool {
+        switch state {
+        case .waitPhoneNumber, .waitTdlibParameters:
+            !viewModel.phone.isEmpty
+        case .waitCode:
+            !viewModel.code.isEmpty
+        case .waitPassword:
+            !viewModel.password.isEmpty
+        default:
+            false
+        }
+    }
+}
+
+public struct ChatListView: View {
+    @ObservedObject public var viewModel: ChatListViewModel
+    public let bridge: SessionBridge
+    @State private var selectedChat: ChatSummary?
+    @State private var showsAccountSwitcher = false
+
+    public init(viewModel: ChatListViewModel, bridge: SessionBridge) {
+        self.viewModel = viewModel
+        self.bridge = bridge
+    }
+
+    public var body: some View {
+        NavigationSplitView {
+            List(selection: $selectedChat) {
+                ForEach(viewModel.filteredChats) { chat in
+                    NavigationLink(value: chat) {
+                        ChatRow(chat: chat)
+                    }
+                }
+            }
+            .navigationTitle("Chats")
+            .searchable(text: $viewModel.searchText)
+            .toolbar {
+                ToolbarItem {
+                    Button("Accounts") {
+                        showsAccountSwitcher = true
+                    }
+                }
+                ToolbarItem {
+                    folderMenu
+                }
+            }
+            .sheet(isPresented: $showsAccountSwitcher) {
+                AccountSwitcherView()
+            }
+            .task {
+                await viewModel.load()
+            }
+        } detail: {
+            if let selectedChat {
+                ChatDetailView(viewModel: ChatViewModel(chat: selectedChat, bridge: bridge), bridge: bridge)
+            } else {
+                Text("Select a chat")
+            }
+        }
+    }
+
+    private var folderMenu: some View {
+        Menu("Folders") {
+            Button("All") {
+                viewModel.selectedFolderId = nil
+                Task { await viewModel.load() }
+            }
+            ForEach(viewModel.folders) { folder in
+                Button(folder.name) {
+                    viewModel.selectedFolderId = folder.id
+                    Task { await viewModel.load() }
+                }
+            }
+        }
+    }
+}
+
+public struct ChatRow: View {
+    public var chat: ChatSummary
+
+    public init(chat: ChatSummary) {
+        self.chat = chat
+    }
+
+    public var body: some View {
+        VStack(alignment: .leading, spacing: 4) {
+            HStack {
+                Text(chat.title)
+                    .font(.headline)
+                    .lineLimit(1)
+                if chat.isPinned {
+                    Image(systemName: "pin.fill")
+                        .font(.caption)
+                }
+                Spacer()
+                if chat.unreadCount > 0 {
+                    Text("\(chat.unreadCount)")
+                        .font(.caption)
+                        .padding(.horizontal, 7)
+                        .padding(.vertical, 3)
+                        .background(.blue, in: Capsule())
+                        .foregroundStyle(.white)
+                }
+            }
+            Text(chat.draft?.text ?? chat.lastMessage)
+                .font(.subheadline)
+                .foregroundStyle(chat.draft == nil ? Color.secondary : Color.red)
+                .lineLimit(2)
+        }
+        .padding(.vertical, 4)
+    }
+}
+
+public struct ChatDetailView: View {
+    @StateObject public var viewModel: ChatViewModel
+    public let bridge: SessionBridge
+    @StateObject private var profileViewModel: ProfileViewModel
+    @State private var showsProfile = false
+
+    public init(viewModel: ChatViewModel, bridge: SessionBridge) {
+        _viewModel = StateObject(wrappedValue: viewModel)
+        self.bridge = bridge
+        _profileViewModel = StateObject(wrappedValue: ProfileViewModel(bridge: bridge))
+    }
+
+    public var body: some View {
+        VStack(spacing: 0) {
+            List(viewModel.messages) { message in
+                MessageRow(message: message)
+                    .listRowSeparator(.hidden)
+            }
+            ComposeBar(text: $viewModel.composeText) {
+                Task { await viewModel.send() }
+            }
+        }
+        .navigationTitle(viewModel.chat.title)
+        .toolbar {
+            Button("Profile") {
+                showsProfile = true
+                Task { await profileViewModel.load(chatId: viewModel.chat.id) }
+            }
+        }
+        .sheet(isPresented: $showsProfile) {
+            ProfileView(viewModel: profileViewModel)
+        }
+        .task {
+            await viewModel.load()
+        }
+    }
+}
+
+public struct MessageRow: View {
+    public var message: Message
+
+    public init(message: Message) {
+        self.message = message
+    }
+
+    public var body: some View {
+        HStack {
+            if message.isOutgoing {
+                Spacer(minLength: 48)
+            }
+            VStack(alignment: .leading, spacing: 5) {
+                if !message.isOutgoing {
+                    Text(message.senderName)
+                        .font(.caption)
+                        .foregroundStyle(.secondary)
+                }
+                if let replyText = message.replyText {
+                    Text(replyText)
+                        .font(.caption)
+                        .foregroundStyle(.secondary)
+                        .padding(.leading, 6)
+                }
+                Text(message.text)
+                    .textSelection(.enabled)
+                if !message.reactions.isEmpty {
+                    Text(message.reactions.map(\.emoji).joined(separator: " "))
+                        .font(.caption)
+                }
+            }
+            .padding(10)
+            .background(message.isOutgoing ? Color.blue.opacity(0.16) : Color.gray.opacity(0.12), in: RoundedRectangle(cornerRadius: 8))
+            if !message.isOutgoing {
+                Spacer(minLength: 48)
+            }
+        }
+    }
+}
+
+public struct ComposeBar: View {
+    @Binding public var text: String
+    public var send: () -> Void
+
+    public init(text: Binding<String>, send: @escaping () -> Void) {
+        _text = text
+        self.send = send
+    }
+
+    public var body: some View {
+        HStack(spacing: 10) {
+            TextField("Message", text: $text, axis: .vertical)
+                .textFieldStyle(.roundedBorder)
+                .lineLimit(1...5)
+            Button(action: send) {
+                Image(systemName: "paperplane.fill")
+            }
+            .buttonStyle(.borderedProminent)
+            .disabled(text.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty)
+        }
+        .padding()
+        .background(.bar)
+    }
+}
+
+public struct ProfileView: View {
+    @ObservedObject public var viewModel: ProfileViewModel
+
+    public init(viewModel: ProfileViewModel) {
+        self.viewModel = viewModel
+    }
+
+    public var body: some View {
+        NavigationStack {
+            List {
+                if let profile = viewModel.profile {
+                    Section {
+                        Text(profile.title)
+                            .font(.title2)
+                        if let username = profile.username {
+                            Text("@\(username)")
+                                .foregroundStyle(.secondary)
+                        }
+                        if let bio = profile.bio {
+                            Text(bio)
+                        }
+                    }
+                    if let memberCount = profile.memberCount {
+                        Section {
+                            Text("\(memberCount) members")
+                        }
+                    }
+                } else {
+                    ProgressView()
+                }
+            }
+            .navigationTitle("Profile")
+        }
+    }
+}
+
+public struct AccountSwitcherView: View {
+    public init() {}
+
+    public var body: some View {
+        NavigationStack {
+            List {
+                Section {
+                    Label("Default", systemImage: "person.crop.circle")
+                    Label("Add account", systemImage: "plus.circle")
+                }
+            }
+            .navigationTitle("Accounts")
+        }
+    }
+}

apps/ios/TeleTuiIOS/Sources/TeleTuiIOSSmokeTests/main.swift

@@ -0,0 +1,80 @@
+import Foundation
+import TeleTuiIOSCore
+
+@main
+struct TeleTuiIOSSmokeTests {
+    static func main() async throws {
+        try await authFlowMatchesAllInteractiveStates()
+        try await chatListLoadsDeterministicFakeDataAndFilters()
+        try await chatDetailLoadsAndSendsMessage()
+        try await profileLoadsFromSelectedChat()
+        appStorageUsesApplicationSupportStyleAccountPaths()
+        print("TeleTuiIOS smoke tests passed")
+    }
+
+    @MainActor
+    private static func authFlowMatchesAllInteractiveStates() async throws {
+        let account = Account(id: "fake", displayName: "Fake", databasePath: URL(fileURLWithPath: "/tmp/fake"))
+        let store = SessionStore(account: account, bridge: FakeSessionBridge())
+        let viewModel = AuthViewModel(store: store)
+
+        await store.refreshAuthState()
+        precondition(store.authState == .waitPhoneNumber)
+
+        viewModel.phone = "+10000000000"
+        await viewModel.submitCurrentStep()
+        precondition(store.authState == .waitCode)
+
+        viewModel.code = "12345"
+        await viewModel.submitCurrentStep()
+        precondition(store.authState == .waitPassword)
+
+        viewModel.password = "secret"
+        await viewModel.submitCurrentStep()
+        precondition(store.authState == .ready)
+    }
+
+    @MainActor
+    private static func chatListLoadsDeterministicFakeDataAndFilters() async throws {
+        let bridge = FakeSessionBridge(auth: .ready)
+        let viewModel = ChatListViewModel(bridge: bridge)
+
+        await viewModel.load()
+        precondition(viewModel.chats.map(\.title) == ["Saved Messages", "iOS Team"])
+
+        viewModel.searchText = "team"
+        precondition(viewModel.filteredChats.map(\.title) == ["iOS Team"])
+    }
+
+    @MainActor
+    private static func chatDetailLoadsAndSendsMessage() async throws {
+        let bridge = FakeSessionBridge(auth: .ready)
+        let chat = try await bridge.loadChats(folderId: nil)[0]
+        let viewModel = ChatViewModel(chat: chat, bridge: bridge)
+
+        await viewModel.load()
+        precondition(viewModel.messages.count == 1)
+
+        viewModel.composeText = "Hi from SwiftUI"
+        await viewModel.send()
+        precondition(viewModel.messages.last?.text == "Hi from SwiftUI")
+        precondition(viewModel.composeText.isEmpty)
+    }
+
+    @MainActor
+    private static func profileLoadsFromSelectedChat() async throws {
+        let bridge = FakeSessionBridge(auth: .ready)
+        let viewModel = ProfileViewModel(bridge: bridge)
+
+        await viewModel.load(chatId: 1)
+        precondition(viewModel.profile?.title == "Saved Messages")
+        precondition(viewModel.profile?.username == "saved")
+    }
+
+    private static func appStorageUsesApplicationSupportStyleAccountPaths() {
+        let root = URL(fileURLWithPath: "/tmp/TeleTuiIOS")
+        let paths = AppStoragePaths(root: root)
+
+        precondition(paths.databasePath(for: "work").path == "/tmp/TeleTuiIOS/Accounts/work/tdlib")
+    }
+}