From c8bdcc4df01fb3236ddeec97d6e268ce9080b33f Mon Sep 17 00:00:00 2001
From: Fredrik Burmester <fredrik.burmester@gmail.com>
Date: Sun, 16 Nov 2025 16:40:42 +0100
Subject: [PATCH] feat: add snap scroll to horizontal lists

---
 components/home/InfiniteScrollingCollectionList.tsx |  8 ++++++++
 components/medialists/MediaListSection.tsx          | 10 +++++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/components/home/InfiniteScrollingCollectionList.tsx b/components/home/InfiniteScrollingCollectionList.tsx
index 30464b63..73a1c21d 100644
--- a/components/home/InfiniteScrollingCollectionList.tsx
+++ b/components/home/InfiniteScrollingCollectionList.tsx
@@ -4,6 +4,7 @@ import {
   type QueryKey,
   useInfiniteQuery,
 } from "@tanstack/react-query";
+import { useMemo } from "react";
 import { useTranslation } from "react-i18next";
 import {
   ActivityIndicator,
@@ -64,6 +65,11 @@ export const InfiniteScrollingCollectionList: React.FC<Props> = ({
   // Flatten all pages into a single array
   const allItems = data?.pages.flat() || [];
 
+  const snapOffsets = useMemo(() => {
+    const itemWidth = orientation === "horizontal" ? 184 : 120; // w-44 (176px) + mr-2 (8px) or w-28 (112px) + mr-2 (8px)
+    return allItems.map((_, index) => index * itemWidth);
+  }, [allItems, orientation]);
+
   if (hideIfEmpty === true && allItems.length === 0 && !isLoading) return null;
   if (disabled || !title) return null;
 
@@ -126,6 +132,8 @@ export const InfiniteScrollingCollectionList: React.FC<Props> = ({
           showsHorizontalScrollIndicator={false}
           onScroll={handleScroll}
           scrollEventThrottle={16}
+          snapToOffsets={snapOffsets}
+          decelerationRate='fast'
         >
           <View className='px-4 flex flex-row'>
             {allItems.map((item) => (
diff --git a/components/medialists/MediaListSection.tsx b/components/medialists/MediaListSection.tsx
index 2c11c5ce..0ada9dc5 100644
--- a/components/medialists/MediaListSection.tsx
+++ b/components/medialists/MediaListSection.tsx
@@ -9,7 +9,7 @@ import {
   useQuery,
 } from "@tanstack/react-query";
 import { useAtom } from "jotai";
-import { useCallback } from "react";
+import { useCallback, useMemo } from "react";
 import { View, type ViewProps } from "react-native";
 import { useInView } from "@/hooks/useInView";
 import { apiAtom, userAtom } from "@/providers/JellyfinProvider";
@@ -67,6 +67,12 @@ export const MediaListSection: React.FC<Props> = ({
     [api, user?.Id, collection?.Id],
   );
 
+  const snapOffsets = useMemo(() => {
+    const itemWidth = 120; // w-28 (112px) + mr-2 (8px)
+    // Generate offsets for a reasonable number of items
+    return Array.from({ length: 50 }, (_, index) => index * itemWidth);
+  }, []);
+
   if (!collection) return null;
 
   return (
@@ -92,6 +98,8 @@ export const MediaListSection: React.FC<Props> = ({
         )}
         queryFn={fetchItems}
         queryKey={["media-list", collection.Id!]}
+        snapToOffsets={snapOffsets}
+        decelerationRate='fast'
       />
     </View>
   );