msg fix

yobble/Resources/Localizable.xcstrings

@@ -280,6 +280,9 @@
     "Блокировка контакта \"%1$@\" появится позже." : {
       "comment" : "Contacts block placeholder message"
     },
+    "Больше сообщений нет" : {
+      "comment" : "Chat history top reached"
+    },
     "Бот" : {
       "comment" : "Тип сессии — бот"
     },

yobble/ViewModels/PrivateChatViewModel.swift

@@ -7,13 +7,13 @@ final class PrivateChatViewModel: ObservableObject {
     @Published private(set) var isLoadingMore: Bool = false
     @Published var errorMessage: String?
     @Published private(set) var isSending: Bool = false
+    @Published private(set) var hasMore: Bool = true
 
     private let chatService: ChatService
     private let chatId: String
     private let currentUserId: String?
     private let pageSize: Int
     private let maxMessageLength: Int = 4096
-    private var hasMore: Bool = true
     private var didLoadInitially: Bool = false
     private var messageObserver: NSObjectProtocol?
 
@@ -127,11 +127,21 @@ final class PrivateChatViewModel: ObservableObject {
 
     func loadMoreIfNeeded(for message: MessageItem) {
         guard didLoadInitially, !isInitialLoading, hasMore, !isLoadingMore else { return }
-        guard let first = messages.first, first.id == message.id else { return }
+
+        guard let messageIndex = messages.firstIndex(where: { $0.id == message.id }) else {
+            return
+        }
+
+        let threshold = 10
+        guard messageIndex < threshold else {
+            return
+        }
+
+        guard let oldestMessage = messages.first else { return }
 
         isLoadingMore = true
 
-        chatService.fetchPrivateChatHistory(chatId: chatId, beforeMessageId: message.id, limit: pageSize) { [weak self] result in
+        chatService.fetchPrivateChatHistory(chatId: chatId, beforeMessageId: oldestMessage.id, limit: pageSize) { [weak self] result in
             guard let self else { return }
 
             switch result {

yobble/Views/Chat/PrivateChatView.swift

@@ -24,6 +24,10 @@ struct PrivateChatView: View {
     @EnvironmentObject private var messageCenter: IncomingMessageCenter
     @Environment(\.dismiss) private var dismiss
 
+    @State private var previousStandardAppearance: UINavigationBarAppearance?
+    @State private var previousScrollEdgeAppearance: UINavigationBarAppearance?
+    @State private var previousCompactAppearance: UINavigationBarAppearance?
+
     init(chat: PrivateChatListItem, currentUserId: String?) {
         self.chat = chat
         self.currentUserId = currentUserId
@@ -36,14 +40,15 @@ struct PrivateChatView: View {
                 ZStack(alignment: .bottomTrailing) {
                     content
                         .onChange(of: viewModel.messages.count) { _ in
-                            guard !viewModel.isLoadingMore else { return }
-                            scrollToBottom(proxy: proxy)
+                            if isBottomAnchorVisible {
+                                scrollToBottom(proxy: proxy)
+                            }
                         }
                         .onChange(of: scrollToBottomTrigger) { _ in
                             scrollToBottom(proxy: proxy)
                         }
 
-                    if !isBottomAnchorVisible {
+                    if !isBottomAnchorVisible && !viewModel.isInitialLoading {
                         scrollToBottomButton(proxy: proxy)
                             .padding(.trailing, 12)
                             .padding(.bottom, 4)
@@ -93,10 +98,24 @@ struct PrivateChatView: View {
         }
         .onAppear {
             messageCenter.activeChatId = chat.chatId
+
+            previousStandardAppearance = UINavigationBar.appearance().standardAppearance
+            previousScrollEdgeAppearance = UINavigationBar.appearance().scrollEdgeAppearance
+            previousCompactAppearance = UINavigationBar.appearance().compactAppearance
+
+            let appearance = UINavigationBarAppearance()
+            appearance.configureWithDefaultBackground()
+//            appearance.shadowColor = .clear
+
+            UINavigationBar.appearance().standardAppearance = appearance
+            UINavigationBar.appearance().scrollEdgeAppearance = appearance
+            UINavigationBar.appearance().compactAppearance = appearance
         }
         .onChange(of: viewModel.isInitialLoading) { isLoading in
             if isLoading {
                 hasPositionedToBottom = false
+            } else if !viewModel.messages.isEmpty {
+                scrollToBottomTrigger = .init()
             }
         }
         .safeAreaInset(edge: .bottom) {
@@ -106,6 +125,12 @@ struct PrivateChatView: View {
             if messageCenter.activeChatId == chat.chatId {
                 messageCenter.activeChatId = nil
             }
+
+            if let standard = previousStandardAppearance {
+                UINavigationBar.appearance().standardAppearance = standard
+            }
+            UINavigationBar.appearance().scrollEdgeAppearance = previousScrollEdgeAppearance
+            UINavigationBar.appearance().compactAppearance = previousCompactAppearance
         }
     }
 
@@ -124,35 +149,43 @@ struct PrivateChatView: View {
     private var messagesList: some View {
         ScrollView {
             LazyVStack(alignment: .leading, spacing: 12) {
-                if viewModel.isLoadingMore {
-                    loadingMoreView
-                } else if viewModel.messages.isEmpty {
-                    emptyState
+                Color.clear
+                    .frame(height: 1)
+                    .id(bottomAnchorId)
+                    .onAppear { isBottomAnchorVisible = true }
+                    .onDisappear { isBottomAnchorVisible = false }
+
+                if let message = viewModel.errorMessage,
+                   !message.isEmpty,
+                   !viewModel.messages.isEmpty {
+                    errorBanner(message: message)
+                        .scaleEffect(x: 1, y: -1, anchor: .center)
                 }
 
-                ForEach(viewModel.messages) { message in
+                ForEach(viewModel.messages.reversed()) { message in
                     messageRow(for: message)
                         .id(message.id)
+                        .scaleEffect(x: 1, y: -1, anchor: .center)
                         .onAppear {
                             guard hasPositionedToBottom else { return }
                             viewModel.loadMoreIfNeeded(for: message)
                         }
                 }
 
-                if let message = viewModel.errorMessage,
-                   !message.isEmpty,
-                   !viewModel.messages.isEmpty {
-                    errorBanner(message: message)
+                if viewModel.isLoadingMore {
+                    loadingMoreView
+                        .scaleEffect(x: 1, y: -1, anchor: .center)
+                } else if !viewModel.hasMore && !viewModel.messages.isEmpty {
+                    noMoreMessagesView
+                        .scaleEffect(x: 1, y: -1, anchor: .center)
+                } else if viewModel.messages.isEmpty {
+                    emptyState
+                        .scaleEffect(x: 1, y: -1, anchor: .center)
                 }
-
-                Color.clear
-                    .frame(height: 1)
-                    .id(bottomAnchorId)
-                    .onAppear { isBottomAnchorVisible = true }
-                    .onDisappear { isBottomAnchorVisible = false }
             }
             .padding(.vertical, 12)
         }
+        .scaleEffect(x: 1, y: -1, anchor: .center)
         .simultaneousGesture(
             DragGesture().onChanged { value in
                 guard value.translation.height > 0 else { return }
@@ -179,6 +212,14 @@ struct PrivateChatView: View {
         .padding(.vertical, 8)
     }
 
+    private var noMoreMessagesView: some View {
+        Text(NSLocalizedString("Больше сообщений нет", comment: "Chat history top reached"))
+            .font(.caption)
+            .foregroundColor(.secondary)
+            .padding(.vertical, 16)
+            .frame(maxWidth: .infinity)
+    }
+
     private func errorView(message: String) -> some View {
         VStack(spacing: 12) {
             Text(message)
@@ -441,7 +482,7 @@ struct PrivateChatView: View {
 
         DispatchQueue.main.async {
             withAnimation(.easeInOut(duration: 0.2)) {
-                proxy.scrollTo(targetId, anchor: .bottom)
+                proxy.scrollTo(targetId, anchor: .top)
             }
         }
     }