From 0e737a1a73f5710dbf20a1494000d828002ad854 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Tue, 4 Aug 2026 03:41:38 +0000
Subject: [PATCH] Perf: Debounce search inputs and offload filtering

- Modifies ExperienceHome and ExperienceLibrary in RockMusicExperience.kt to use `LaunchedEffect` for debouncing search input keystrokes by 300ms.
- Offloads expensive `UnifiedHomeLibrary.localTracks` filtering computations to `Dispatchers.Default`.
- Replaces synchronous `remember` blocks with state properties that are updated asynchronously, keeping the main thread responsive.

Co-authored-by: SayanthRock <202829406+SayanthRock@users.noreply.github.com>
---
 .../app/presentation/RockMusicExperience.kt   | 26 ++++++++++++++++---
 1 file changed, 22 insertions(+), 4 deletions(-)

diff --git a/app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt b/app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt
index b5fb1bb..bfd1269 100644
--- a/app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt
+++ b/app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt
@@ -95,6 +95,9 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import coil3.compose.AsyncImage
 import com.rockmusic.app.domain.model.LocalTrack
 import com.rockmusic.app.player.PlayerUiState
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.withContext
 
 private enum class ExperienceDestination(val label: String) {
     HOME("Home"),
@@ -285,9 +288,17 @@ private fun ExperienceHome(
         if (hasPermission && state.tracks.isEmpty() && !state.isLoading) onLoad()
     }
 
-    val visibleTracks = remember(state.tracks, query, source) {
-        UnifiedHomeLibrary.localTracks(state.tracks, query, source)
+    var visibleTracks by remember { mutableStateOf<List<LocalTrack>>(emptyList()) }
+
+    // ⚡ Bolt: Debounce keystrokes and offload expensive list filtering to a background thread
+    // to prevent UI stutter and main thread blocking.
+    LaunchedEffect(state.tracks, query, source) {
+        delay(300)
+        visibleTracks = withContext(Dispatchers.Default) {
+            UnifiedHomeLibrary.localTracks(state.tracks, query, source)
+        }
     }
+
     val featuredTracks = remember(visibleTracks) {
         UnifiedHomeLibrary.featuredTracks(visibleTracks)
     }
@@ -589,8 +600,15 @@ private fun ExperienceLibrary(
     onOpenAudio: () -> Unit,
 ) {
     var query by remember { mutableStateOf("") }
-    val results = remember(tracks, query) {
-        UnifiedHomeLibrary.localTracks(tracks, query, UnifiedHomeSource.SONGS)
+    var results by remember { mutableStateOf<List<LocalTrack>>(emptyList()) }
+
+    // ⚡ Bolt: Debounce keystrokes and offload expensive list filtering to a background thread
+    // to prevent UI stutter and main thread blocking.
+    LaunchedEffect(tracks, query) {
+        delay(300)
+        results = withContext(Dispatchers.Default) {
+            UnifiedHomeLibrary.localTracks(tracks, query, UnifiedHomeSource.SONGS)
+        }
     }
 
     LazyColumn(