stop prefetching the next track's full artwork

app/src/main/kotlin/com/subtracks/ui/playback/NowPlayingScreen.kt

@@ -1,6 +1,5 @@
 package com.subtracks.ui.playback
 
-import android.content.Context
 import androidx.compose.foundation.background
 import androidx.compose.foundation.basicMarquee
 import androidx.compose.foundation.clickable
@@ -63,10 +62,7 @@ import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import coil3.SingletonImageLoader
 import coil3.compose.LocalPlatformContext
-import coil3.request.CachePolicy
-import coil3.request.ImageRequest
 import com.subtracks.data.model.CoverArtRef
 import com.subtracks.data.model.QueueKind
 import com.subtracks.data.model.Song
@@ -141,10 +137,8 @@ fun NowPlayingRoute(
     }
     LaunchedEffect(state.item?.id, state.hasNext) {
         if (!state.hasNext) return@LaunchedEffect
-        controller.upcomingItem()?.let { next ->
+        val next = controller.upcomingItem() ?: return@LaunchedEffect
-            controller.coverArt(next, thumbnail = true)?.let { ArtworkSeedCache.prefetch(context, it) }
+        controller.coverArt(next, thumbnail = true)?.let { ArtworkSeedCache.prefetch(context, it) }
-            controller.coverArt(next)?.let { prefetchImage(context, it) }
-        }
     }
     NowPlayingScreen(
         state = state,
@@ -170,28 +164,6 @@ fun NowPlayingRoute(
     )
 }
 
-internal fun prefetchImage(
-    context: Context,
-    ref: CoverArtRef,
-) {
-    SingletonImageLoader.get(context).enqueue(prefetchImageRequest(context, ref))
-}
-
-internal fun prefetchImageRequest(
-    context: Context,
-    ref: CoverArtRef,
-): ImageRequest {
-    val metrics = context.resources.displayMetrics
-    val maxDimension = maxOf(metrics.widthPixels, metrics.heightPixels)
-    return ImageRequest
-        .Builder(context)
-        .data(ref.url)
-        .diskCacheKey(ref.cacheKey)
-        .memoryCachePolicy(CachePolicy.DISABLED)
-        .size(maxDimension)
-        .build()
-}
-
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun NowPlayingScreen(

app/src/test/kotlin/com/subtracks/ui/playback/NowPlayingArtworkTest.kt

@@ -1,40 +0,0 @@
-package com.subtracks.ui.playback
-
-import android.content.Context
-import androidx.test.core.app.ApplicationProvider
-import androidx.test.ext.junit.runners.AndroidJUnit4
-import coil3.SingletonImageLoader
-import coil3.annotation.DelicateCoilApi
-import coil3.request.CachePolicy
-import coil3.size.Dimension
-import com.subtracks.data.model.CoverArtRef
-import kotlinx.coroutines.runBlocking
-import org.junit.After
-import org.junit.Assert.assertEquals
-import org.junit.Test
-import org.junit.runner.RunWith
-
-@OptIn(DelicateCoilApi::class)
-@RunWith(AndroidJUnit4::class)
-class NowPlayingArtworkTest {
-    @After
-    fun resetImageLoader() {
-        SingletonImageLoader.reset()
-    }
-
-    @Test
-    fun prefetchingTheNextOriginalIsBoundedToTheScreen() =
-        runBlocking {
-            val context = ApplicationProvider.getApplicationContext<Context>()
-            val ref = CoverArtRef(url = "http://example.test/art", cacheKey = "1:art:false")
-
-            val request = prefetchImageRequest(context, ref)
-            val resolved = request.sizeResolver.size()
-            val width = (resolved.width as Dimension.Pixels).px
-
-            val metrics = context.resources.displayMetrics
-            assertEquals(maxOf(metrics.widthPixels, metrics.heightPixels), width)
-            assertEquals(ref.cacheKey, request.diskCacheKey)
-            assertEquals(CachePolicy.DISABLED, request.memoryCachePolicy)
-        }
-}