scroll to top while tap tap

yobble/Views/Tab/ChatsTab.swift

@@ -32,6 +32,7 @@ struct ChatsTab: View {
     @State private var isPendingChatActive: Bool = false
 
     private let searchRevealDistance: CGFloat = 90
+    private let scrollToTopAnchorId = "ChatsListTopAnchor"
 
     private var currentUserId: String? {
         let userId = loginViewModel.userId
@@ -109,6 +110,7 @@ struct ChatsTab: View {
     }
 
     private var chatList: some View {
+        ScrollViewReader { proxy in
             ZStack {
                 List {
 //            VStack(spacing: 0) {
@@ -144,8 +146,10 @@ struct ChatsTab: View {
                                     .listRowInsets(EdgeInsets(top: 24, leading: 16, bottom: 24, trailing: 16))
                                     .listRowSeparator(.hidden)
                             } else {
+                                let firstLocalChatId = localSearchResults.first?.chatId
                                 ForEach(localSearchResults) { chat in
                                     chatRowItem(for: chat)
+                                        .id(chat.chatId == firstLocalChatId ? scrollToTopAnchorId : chat.chatId)
                                 }
                             }
                         }
@@ -161,8 +165,10 @@ struct ChatsTab: View {
                             emptyState
                         } else {
 
+                            let firstChatId = viewModel.chats.first?.chatId
                             ForEach(viewModel.chats) { chat in
                                 chatRowItem(for: chat)
+                                    .id(chat.chatId == firstChatId ? scrollToTopAnchorId : chat.chatId)
                             }
 
                             if viewModel.isLoadingMore {
@@ -175,6 +181,9 @@ struct ChatsTab: View {
                 .modifier(ScrollDismissesKeyboardModifier())
                 .simultaneousGesture(searchBarGesture)
                 .simultaneousGesture(tapToDismissKeyboardGesture)
+                .onReceive(NotificationCenter.default.publisher(for: .chatsShouldScrollToTop)) { _ in
+                    scrollChatsToTop(using: proxy)
+                }
 //            .safeAreaInset(edge: .top) {
 //                VStack(spacing: 0) {
 //                    searchBar
@@ -189,6 +198,7 @@ struct ChatsTab: View {
                 pendingChatNavigationLink
             }
         }
+    }
 
     private var pendingChatNavigationLink: some View {
         NavigationLink(
@@ -217,6 +227,14 @@ struct ChatsTab: View {
         }
     }
 
+    private func scrollChatsToTop(using proxy: ScrollViewProxy) {
+        DispatchQueue.main.async {
+            withAnimation(.spring(response: 0.35, dampingFraction: 0.75)) {
+                proxy.scrollTo(scrollToTopAnchorId, anchor: .top)
+            }
+        }
+    }
+
     private var searchBarGesture: some Gesture {
         DragGesture(minimumDistance: 10, coordinateSpace: .local)
             .onChanged { value in
@@ -319,8 +337,10 @@ struct ChatsTab: View {
         if globalSearchResults.isEmpty {
             globalSearchEmptyRow
         } else {
+            let firstGlobalUserId = globalSearchResults.first?.id
             ForEach(globalSearchResults) { user in
                 globalSearchRow(for: user)
+                    .id(user.id == firstGlobalUserId ? AnyHashable(scrollToTopAnchorId) : AnyHashable(user.id))
             }
         }
     }
@@ -1181,4 +1201,5 @@ extension Notification.Name {
     static let debugRefreshChats = Notification.Name("debugRefreshChats")
     static let chatsShouldRefresh = Notification.Name("chatsShouldRefresh")
     static let chatsReloadCompleted = Notification.Name("chatsReloadCompleted")
+    static let chatsShouldScrollToTop = Notification.Name("chatsShouldScrollToTop")
 }

yobble/Views/Tab/CustomTabBar.swift

@@ -14,7 +14,7 @@ struct CustomTabBar: View {
                 }
 
                 TabBarButton(systemName: "bubble.left.and.bubble.right.fill", text: NSLocalizedString("Чаты", comment: ""), isSelected: selectedTab == 2) {
-                    selectedTab = 2
+                    handleChatsTabTap()
                 }
 
                 TabBarButton(systemName: "gearshape.fill", text: NSLocalizedString("Настройки", comment: ""), isSelected: selectedTab == 5) {
@@ -34,7 +34,7 @@ struct CustomTabBar: View {
                 }
 
                 TabBarButton(systemName: "bubble.left.and.bubble.right.fill", text: NSLocalizedString("Чаты", comment: ""), isSelected: selectedTab == 2) {
-                    selectedTab = 2
+                    handleChatsTabTap()
                 }
 
                 TabBarButton(systemName: "person.crop.square", text: NSLocalizedString("Лицо", comment: ""), isSelected: selectedTab == 3) {
@@ -93,3 +93,13 @@ struct CreateButton: View {
         .offset(y: -3)
     }
 }
+
+private extension CustomTabBar {
+    func handleChatsTabTap() {
+        if selectedTab == 2 {
+            NotificationCenter.default.post(name: .chatsShouldScrollToTop, object: nil)
+        } else {
+            selectedTab = 2
+        }
+    }
+}