fix scroll to bottom, on insert

apps/ios/Shared/Model/ChatModel.swift

@@ -50,9 +50,6 @@ class ItemsModel: ObservableObject {
     var reversedChatItems: [ChatItem] = [] {
         willSet { publisher.send() }
     }
-    var itemAdded = false {
-        willSet { publisher.send() }
-    }
     
     // Publishes directly to `objectWillChange` publisher,
     // this will cause reversedChatItems to be rendered without throttling
@@ -456,7 +453,6 @@ final class ChatModel: ObservableObject {
                     ci.meta.itemStatus = status
                 }
                 im.reversedChatItems.insert(ci, at: hasLiveDummy ? 1 : 0)
-                im.itemAdded = true
             }
             return true
         }
@@ -551,7 +547,6 @@ final class ChatModel: ObservableObject {
         let cItem = ChatItem.liveDummy(chatInfo.chatType)
         withAnimation {
             im.reversedChatItems.insert(cItem, at: 0)
-            im.itemAdded = true
         }
         return cItem
     }
@@ -915,7 +910,6 @@ final class ChatModel: ObservableObject {
             // TODO these thresholds account for the fact that items are still "visible" while
             // covered by compose area, they should be replaced with the actual height in pixels below the screen.
             isNearBottom: totalBelow < 15,
-            isReallyNearBottom: totalBelow < 2,
             unreadBelow: unreadBelow
         )
     }
@@ -942,7 +936,6 @@ struct NTFContactRequest {
 
 struct UnreadChatItemCounts: Equatable {
     var isNearBottom: Bool
-    var isReallyNearBottom: Bool
     var unreadBelow: Int
 }
 

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

@@ -472,7 +472,6 @@ struct ChatView: View {
         init() {
             unreadChatItemCounts = UnreadChatItemCounts(
                 isNearBottom: true,
-                isReallyNearBottom: true,
                 unreadBelow: 0
             )
             events

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

@@ -163,17 +163,31 @@ struct ReverseList<Item: Identifiable & Hashable & Sendable, Content: View>: UIV
                     animated: animated
                 )
             } else {
-                tableView.setContentOffset(
-                    CGPoint(x: .zero, y: -InvertedTableView.inset),
-                    animated: animated
-                )
+                scrollToBottom(animated: animated)
             }
             Task { representer.scrollState = .atDestination }
         }
 
-        var itemId: Item.ID?
-        var retainedItems: [Item]?
-        var updateInProgress = false
+        private func scrollToBottom(animated: Bool) {
+            tableView.setContentOffset(
+                CGPoint(x: .zero, y: -InvertedTableView.inset),
+                animated: animated
+            )
+        }
+
+        private var isNearBottom: Bool {
+            let adjustedOffset = tableView.contentOffset.y + InvertedTableView.inset
+            return adjustedOffset > 0 && adjustedOffset < 500
+        }
+
+        private var isFarFromBottom: Bool {
+            let adjustedOffset = tableView.contentOffset.y + InvertedTableView.inset
+            return adjustedOffset > 1000
+        }
+
+        private var itemId: Item.ID?
+        private var retainedItems: [Item]?
+        private var updateInProgress = false
 
         func update(items: [Item]) {
             if updateInProgress {
@@ -190,6 +204,7 @@ struct ReverseList<Item: Identifiable & Hashable & Sendable, Content: View>: UIV
                         // Added items animated by sliding from bottom (.top)
                         self._update(items: items, animated: true) {
                             self.updateInProgress = false
+                            if self.isNearBottom { self.scrollToBottom(animated: true) }
                             // Process update, which might have arrived before completion
                             if let items = self.retainedItems { self.update(items: items) }
                         }