⚡ Bolt: [debounce search inputs and offload filtering] #65
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@@ -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 | ||
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| private enum class ExperienceDestination(val label: String) { | ||
| HOME("Home"), | ||
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@@ -285,9 +288,17 @@ private fun ExperienceHome( | |
| if (hasPermission && state.tracks.isEmpty() && !state.isLoading) onLoad() | ||
| } | ||
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| var visibleTracks by remember { mutableStateOf<List<LocalTrack>>(emptyList()) } | ||
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| // ⚡ 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) | ||
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There was a problem hiding this comment. 🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
echo "== locate files =="
fd -a 'RockMusicExperience.kt|UnifiedHomeLibrary.kt' . | sed 's#^\./##'
echo "== file sizes =="
while IFS= read -r f; do
echo "$f: $(wc -l < "$f")"
done < <(fd 'RockMusicExperience.kt|UnifiedHomeLibrary.kt' .)
echo "== outlines =="
for f in $(fd 'RockMusicExperience.kt|UnifiedHomeLibrary.kt' .); do
echo "--- $f ---"
ast-grep outline "$f" || true
done
echo "== relevant RockMusicExperience sections =="
f=$(fd 'RockMusicExperience.kt' . | head -n1)
if [ -n "${f:-}" ]; then
sed -n '260,330p;410,445p' "$f" | cat -n
echo "--- all visibleTracks usages in $f ---"
rg -n "visibleTracks|LocalTracks|localTracks|LaunchedEffect|state\\.tracks|query|source" "$f"
fi
echo "== UnifiedHomeLibrary relevant sections =="
g=$(fd 'UnifiedHomeLibrary.kt' . | head -n1)
if [ -n "${g:-}" ]; then
sed -n '1,120p;330,410p' "$g" | cat -n
echo "--- localTracks usages in $g ---"
rg -n "fun localTracks|localTracks|visibleTracks|query|source" "$g"
fiRepository: Sayanthrock-Developer/Rock-music Length of output: 440 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo "== locate files =="
files=()
while IFS= read -r f; do
files+=("$f")
done < <(find . -path '*/app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt' -o -path '*/app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt' 2>/dev/null | sort)
printf '%s\n' "${files[@]}"
echo "== file sizes =="
for f in "${files[@]}"; do
echo "$f: $(wc -l < "$f")"
done
echo "== outlines =="
for f in "${files[@]}"; do
echo "--- $f ---"
ast-grep outline "$f" || true
done
echo "== relevant RockMusicExperience sections =="
f="${files[0]}"
sed -n '260,330p;410,445p' "$f" | cat -n
echo "--- all visibleTracks usages in $f ---"
rg -n "visibleTracks|LocalTracks|localTracks|LaunchedEffect|state\.tracks|query|source" "$f"
echo "== UnifiedHomeLibrary relevant sections =="
g="${files[1]}"
sed -n '1,120p;330,410p' "$g" | cat -n
echo "--- localTracks usages in $g ---"
rg -n "fun localTracks|localTracks|visibleTracks|query|source" "$g"Repository: Sayanthrock-Developer/Rock-music Length of output: 241 🏁 Script executed: #!/bin/bash
set -u
echo "== locate files =="
find . -path '*/app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt' -o -path '*/app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt' 2>/dev/null | sort
echo "== file sizes =="
for f in $(find . -path '*/app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt' -o -path '*/app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt' 2>/dev/null | sort); do
echo "$f: $(wc -l < "$f")"
doneRepository: Sayanthrock-Developer/Rock-music Length of output: 510 🏁 Script executed: #!/bin/bash
set -u
rock_file="./app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt"
lib_file="./app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt"
echo "== UnifiedHomeLibrary.kt =="
cat -n "$lib_file"
echo "== RockMusicExperience.kt relevant sections =="
sed -n '260,330p;410,445p' "$rock_file" | cat -n
echo "--- relevant usages in $rock_file ---"
rg -n "visibleTracks|LocalTracks|localTracks|LaunchedEffect|state\.tracks|query|source|debounce|debounced|collectAsStateWithLifecycle|LaunchedEffect" "$rock_file"
echo "== state definition/usages context =="
rg -n "data class .*State|State<|mutableStateOf|tracks|visibleTracks" "$rock_file"
sed -n '1,140p' "$rock_file" | cat -nRepository: Sayanthrock-Developer/Rock-music Length of output: 19518 Do not debounce the blank-query results path.
🤖 Prompt for AI Agents |
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| visibleTracks = withContext(Dispatchers.Default) { | ||
| UnifiedHomeLibrary.localTracks(state.tracks, query, source) | ||
| } | ||
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There was a problem hiding this comment. 🚀 Performance & Scalability | 🟠 Major | 🏗️ Heavy lift 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
echo "== locate file =="
fd -a 'RockMusicExperience\.kt|UnifiedHomeLibrary\.(kt|kts|java)$' . | sed 's#^\./##'
echo "== git diff stat =="
git diff --stat || true
echo "== outline RockMusicExperience =="
ast-grep outline app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt --view compact || true
echo "== relevant lines RockMusicExperience =="
sed -n '250,340p' app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt
echo "== UnifiedHomeLibrary files =="
for f in $(fd 'UnifiedHomeLibrary\.(kt|kts|java)$' .); do
echo "--- $f"
ast-grep outline "$f" --view compact || true
rg -n "fun localTracks|class UnifiedHomeLibrary|object UnifiedHomeLibrary|localTracks|delay\\(|ensureActive\\(|withContext" "$f"
doneRepository: Sayanthrock-Developer/Rock-music Length of output: 4506 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo "== UnifiedHomeLibrary localTracks implementation =="
sed -n '1,220p' app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt
echo "== all localTracks usages =="
rg -n "localTracks\\(" app/src/main/java/com/rockmusic/app/presentation app/src/main/java/com/rockmusic/app || true
echo "== coroutine/cancellation usages near relevant file =="
rg -n "currentCoroutineContext\\(|ensureActive\\(|isActive|Dispatchers\\.Default|withContext" app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt || true
echo "== behavioral probe: cancellation context on synchronous cpu work =="
python3 - <<'PY'
print("Kotlin coroutines cancellation checks cancellation state only at suspension points or explicit checks during non-suspending CPU work.")
PYRepository: Sayanthrock-Developer/Rock-music Length of output: 3508 Make the background When 🤖 Prompt for AI Agents |
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| } | ||
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There was a problem hiding this comment. Suggestion: During the 300 ms debounce, Severity Level: Major
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| val featuredTracks = remember(visibleTracks) { | ||
| UnifiedHomeLibrary.featuredTracks(visibleTracks) | ||
| } | ||
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@@ -589,8 +600,15 @@ private fun ExperienceLibrary( | |
| onOpenAudio: () -> Unit, | ||
| ) { | ||
| var query by remember { mutableStateOf("") } | ||
| var results by remember { mutableStateOf<List<LocalTrack>>(emptyList()) } | ||
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| // ⚡ 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) | ||
|
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There was a problem hiding this comment. 🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
# Locate and inspect the relevant files and line ranges.
echo "== files =="
git ls-files | rg 'RockMusicExperience\.kt|UnifiedHomeLibrary\.kt$' || true
echo "== RockMusicExperience outline =="
ast-grep outline 'app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt' --view compact || true
echo "== relevant RockMusicExperience lines 560-690 =="
sed -n '560,690p' 'app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt' | nl -ba -v560
echo "== UnifiedHomeLibrary lines 1-80 =="
sed -n '1,80p' 'app/src/main/java/com/rockmusic/app/data/UnifiedHomeLibrary.kt' | nl -ba -v1Repository: Sayanthrock-Developer/Rock-music Length of output: 600 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo "== relevant RockMusicExperience lines 560-690 =="
sed -n '560,690p' 'app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt' | awk '{printf "%7d\t%s\n", $1+559, $2}'
echo "== UnifiedHomeLibrary lines 1-80 =="
sed -n '1,80p' 'app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt' | awk '{printf "%7d\t%s\n", NR, $0}'
echo "== references to LaunchedEffect/debounce/null search =="
rg -n "LaunchedEffect|debounce|300|UnifiedHomeLibrary|localTracks|No songs match" 'app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt'Repository: Sayanthrock-Developer/Rock-music Length of output: 4669 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo "== relevant RockMusicExperience lines 260-320 =="
sed -n '260,320p' 'app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt' | awk '{printf "%7d\t%s\n", NR+259, $0}'
echo "== RockMusicExperience around target LaunchedEffect/empty state =="
sed -n '580,675p' 'app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt' | awk '{printf "%7d\t%s\n", NR+579, $0}'
echo "== deterministic invariant probe from source text =="
python3 - <<'PY'
from pathlib import Path
text = Path('app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt').read_text()
needle = '''LaunchedEffect(tracks, query) {
delay(300)'''
print("target_exact_early_return_condition_exists=", "if (query.isBlank()) return" in text[text.index(needle):text.index(needle)+300])
print("target_has_unique_delay_300=", text.count(" delay(300)") + text.count(" delay(300)") == 1 or text.count("delay(300)") >= 1)
print("query_isBlank_guard_nearby=", "if (query.isBlank()) return" in text or "if (query.isEmpty()) return" in text)
print("no_songs_text=", "No songs match this search." in text)
print("Blank query local tracks source=", "cleanedQuery.isBlank()" in Path('app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt').read_text())
PYRepository: Sayanthrock-Developer/Rock-music Length of output: 7755 Do not debounce the blank-query path.
🤖 Prompt for AI Agents |
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| results = withContext(Dispatchers.Default) { | ||
| UnifiedHomeLibrary.localTracks(tracks, query, UnifiedHomeSource.SONGS) | ||
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There was a problem hiding this comment. 🚀 Performance & Scalability | 🟠 Major | 🏗️ Heavy lift 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
echo "== locate file and symbols =="
git ls-files | rg 'app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience\.kt|UnifiedHomeLibrary|UnifiedHomeSource' || true
echo
echo "== relevant lines around usage =="
if [ -f app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt ]; then
sed -n '580,635p' app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt | cat -n -v
fi
echo
echo "== definitions/usages =="
rg -n "object UnifiedHomeLibrary|class UnifiedHomeLibrary|fun localTracks|localTracks\\(" .Repository: Sayanthrock-Developer/Rock-music Length of output: 4312 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo "== UnifiedHomeLibrary.kt outline/size =="
wc -l app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt
ast-grep outline app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt || true
echo
echo "== UnifiedHomeLibrary.kt contents =="
cat -n -v app/src/main/java/com/rockmusic/app/presentation/UnifiedHomeLibrary.kt
echo
echo "== surrounding usages in RockMusicExperience.kt =="
sed -n '260,315p' app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt | cat -n -vRepository: Sayanthrock-Developer/Rock-music Length of output: 5321 Make
🤖 Prompt for AI Agents |
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| } | ||
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There was a problem hiding this comment. 🎯 Functional Correctness | 🟠 Major | ⚡ Quick win 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
# Locate and inspect the relevant file and nearby implementation.
fd -a 'RockMusicExperience.kt' .
echo '--- outline ---'
ast-grep outline app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt --view compact || true
echo '--- relevant lines 560-710 ---'
sed -n '560,710p' app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt | nl -ba -v560
echo '--- related search ---'
rg -n "onPlayAll|Play all|results|LaunchedEffect|UnifiedHomeLibrary|LocalTrack|search|Play all" app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.ktRepository: Sayanthrock-Developer/Rock-music Length of output: 499 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '--- relevant lines 560-710 ---'
awk 'NR>=560 && NR<=710 { printf ("%6d\t%s\n", NR, $0) }' app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt
echo '--- related search ---'
rg -n "onPlayAll|Play all|results|LaunchedEffect|UnifiedHomeLibrary|LocalTrack|search|Play all" app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt
echo '--- outline ---'
ast-grep outline app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt || trueRepository: Sayanthrock-Developer/Rock-music Length of output: 9983 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '--- inspect playAll implementation ---'
fd -a 'RockMusicExperienceViewModel.kt|*ViewModel*.kt|*Presentation*.kt' . | sed -n '1,80p'
rg -n "fun .*playAll|playAll\\s*=|fun .*Search|onSearch|playAll\\(" . -g '*.kt'
echo '--- read candidate files ---'
for f in $(fd 'RockMusicExperienceViewModel.kt|.*ViewModel.*\\.kt' . | sed -n '1,20p'); do
echo "---- $f ----"
wc -l "$f"
sed -n '1,180p' "$f"
doneRepository: Sayanthrock-Developer/Rock-music Length of output: 585 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '--- locate files ---'
fd 'RockMusicExperienceViewModel.kt|.*ViewModel.*\.kt|.*Presentation.*\.kt' . | sed -n '1,80p'
echo '--- search playAll and search actions ---'
rg -n -n "fun .*playAll|playAll\\s*=|fun .*Search|onSearch|playAll\\(" . -g '*.kt' || true
echo '--- read candidate files ---'
while IFS= read -r f; do
echo "---- $f ----"
wc -l "$f"
sed -n '1,220p' "$f"
done < <(fd 'RockMusicExperienceViewModel.kt|.*ViewModel.*\.kt|.*Presentation.*\.kt' . | sed -n '1,20p')Repository: Sayanthrock-Developer/Rock-music Length of output: 3621 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '--- MainViewModel playAll implementation ---'
awk 'NR>=240 && NR<=290 { printf ("%6d\t%s\n", NR, $0) }' app/src/main/java/com/rockmusic/app/presentation/MainViewModel.kt
echo '--- RockMusicRoot library composition ---'
awk 'NR>=440 && NR<=510 { printf ("%6d\t%s\n", NR, $0) }' app/src/main/java/com/rockmusic/app/presentation/RockMusicRoot.kt
echo '--- stable programmatic check for stale-result behavior ---'
python3 - <<'PY'
from pathlib import Path
p = Path('app/src/main/java/com/rockmusic/app/presentation/RockMusicExperience.kt')
s = p.read_text()
checks = {
'debounce_before_filter': 'delay(300)' in s and 'LaunchedEffect(tracks, query)' in s,
'publish_after_filter': 'results = withContext(Dispatchers.Default)' in s and 'UnifiedHomeLibrary.localTracks(tracks, query, UnifiedHomeSource.SONGS)' in s,
'play_uses_current_results': 'TextButton(onClick = { onPlayAll(results) })' in s,
'no_running_state': 'var isRunning' not in s and 'var pending' not in s,
}
for name, ok in checks.items():
print(f'{name}={ok}')
if not all(checks.values()):
print('CHECKS_FAILED')
PYRepository: Sayanthrock-Developer/Rock-music Length of output: 6085 Do not publish library search results before filtering completes.
🤖 Prompt for AI Agents |
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| } | ||
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There was a problem hiding this comment. Suggestion: The library now starts with an empty Severity Level: Major
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visibleTracks initialises as empty list, causing a brief flash of empty-state UI on first load before the 300ms debounce fires
Initialising
visibleTracks(andresultsinExperienceLibrary) asemptyList()means that on first composition — before the 300msLaunchedEffectdelay completes — the UI will briefly show the empty-state message ("No imported songs match…" or "Your library is empty") even whenstate.tracksis already populated. This is a regression from the previousremember(…)approach which computed synchronously.Consider seeding the initial value synchronously (e.g.
remember { UnifiedHomeLibrary.localTracks(state.tracks, query, source) }or usingnullas a sentinel to distinguish "not yet computed" from "genuinely empty"), so the correct list is shown immediately on first render.Why did I show this?
Category: bug
Comment Quality: high
Based on general best practices