From 1cfb729cae5058a31b1c884ca5ec9d1233239beb Mon Sep 17 00:00:00 2001
From: Yusuf Suleman <yusuf@quadjourney.com>
Date: Sat, 4 Apr 2026 13:39:55 -0500
Subject: [PATCH] fix: auto-scroll loads more when near bottom
MIME-Version: 1.0
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onAppear doesn't fire during programmatic scrolling (UIScrollView
contentOffset changes don't trigger SwiftUI lifecycle). Added
onNearBottom callback to ScrollViewDriver — fires when within 500pt
of bottom during auto-scroll tick. 3s cooldown prevents rapid-fire.

Auto-scroll no longer stops at bottom — idles at maxOffset while
loadMore fetches. When new entries arrive, contentSize grows and
scrolling resumes automatically.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 .../Features/Reader/Views/EntryListView.swift |  6 ++++--
 .../Reader/Views/ScrollViewDriver.swift       | 20 +++++++++++++++++--
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/ios/Platform/Platform/Features/Reader/Views/EntryListView.swift b/ios/Platform/Platform/Features/Reader/Views/EntryListView.swift
index 3e6ff27..cba81bf 100644
--- a/ios/Platform/Platform/Features/Reader/Views/EntryListView.swift
+++ b/ios/Platform/Platform/Features/Reader/Views/EntryListView.swift
@@ -40,8 +40,10 @@ struct EntryListView: View {
         } else {
             ScrollView {
                 // Auto-scroll engine — zero-size, drives parent UIScrollView
-                ScrollViewDriver(isScrolling: $isAutoScrolling, speed: scrollSpeed)
-                    .frame(width: 0, height: 0)
+                ScrollViewDriver(isScrolling: $isAutoScrolling, speed: scrollSpeed) {
+                    Task { await vm.loadMore() }
+                }
+                .frame(width: 0, height: 0)
 
                 if isCardView {
                     cardLayout
diff --git a/ios/Platform/Platform/Features/Reader/Views/ScrollViewDriver.swift b/ios/Platform/Platform/Features/Reader/Views/ScrollViewDriver.swift
index 6ea1102..88cf223 100644
--- a/ios/Platform/Platform/Features/Reader/Views/ScrollViewDriver.swift
+++ b/ios/Platform/Platform/Features/Reader/Views/ScrollViewDriver.swift
@@ -7,6 +7,7 @@ import UIKit
 struct ScrollViewDriver: UIViewRepresentable {
     @Binding var isScrolling: Bool
     let speed: Double // 1.0 = 60pt/sec
+    var onNearBottom: (() -> Void)? = nil
 
     func makeUIView(context: Context) -> UIView {
         let view = DriverView()
@@ -21,6 +22,7 @@ struct ScrollViewDriver: UIViewRepresentable {
         let coordinator = context.coordinator
         coordinator.speed = speed
         coordinator.isScrollingBinding = $isScrolling
+        coordinator.onNearBottom = onNearBottom
 
         if isScrolling && coordinator.displayLink == nil {
             coordinator.startScrolling(in: driver)
@@ -54,8 +56,10 @@ struct ScrollViewDriver: UIViewRepresentable {
         var displayLink: CADisplayLink?
         var speed: Double = 1.0
         var isScrollingBinding: Binding<Bool>?
+        var onNearBottom: (() -> Void)?
         private var originalDelegate: UIScrollViewDelegate?
         private var delegateInstalled = false
+        private var loadMoreTriggered = false
 
         func findScrollView(from view: UIView) {
             var current: UIView? = view.superview
@@ -110,9 +114,21 @@ struct ScrollViewDriver: UIViewRepresentable {
 
             originalDelegate?.scrollViewDidScroll?(sv)
 
-            if newY >= maxOffset - 1 {
-                stopAndNotify()
+            // Trigger load more when within 500pt of bottom
+            let distanceToBottom = maxOffset - newY
+            if distanceToBottom < 500 && !loadMoreTriggered {
+                loadMoreTriggered = true
+                DispatchQueue.main.async { [weak self] in
+                    self?.onNearBottom?()
+                    // Reset after a delay so it can trigger again for the next page
+                    DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
+                        self?.loadMoreTriggered = false
+                    }
+                }
             }
+
+            // Don't stop at bottom — contentSize may grow after loadMore.
+            // The tick keeps running; if no more content, it just idles at maxOffset.
         }
 
         private func stopAndNotify() {