Switching to PodcastImage (#1360)

This pull request switch the component to show thumbnails in tv apps
from `AsyncImage` into `PodcastImage`. As a side effect of the
migration, Podcast`, `PodcastWithExtraInfo` and `EpisodeToPodcast` are
replaced with their external models.

Jetcaster/designsystem/src/main/java/com/example/jetcaster/designsystem/component/PodcastImage.kt

@@ -22,14 +22,14 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.size
 import androidx.compose.material3.CircularProgressIndicator
-import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Brush
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
@@ -43,6 +43,7 @@ fun PodcastImage(
     contentDescription: String?,
     modifier: Modifier = Modifier,
     contentScale: ContentScale = ContentScale.Crop,
+    placeholderBrush: Brush = thumbnailPlaceholderDefaultBrush(),
 ) {
     var imagePainterState by remember {
         mutableStateOf<AsyncImagePainter.State>(AsyncImagePainter.State.Empty)
@@ -73,8 +74,9 @@ fun PodcastImage(
             else -> {
                 Box(
                     modifier = Modifier
+                        .background(placeholderBrush)
                         .fillMaxSize()
-                        .background(MaterialTheme.colorScheme.surfaceContainerHigh)
+
                 )
             }
         }

Jetcaster/tv-app/src/main/java/com/example/jetcaster/tv/ui/component/thumbnailPlaceholder.kt → Jetcaster/designsystem/src/main/java/com/example/jetcaster/designsystem/component/thumbnailPlaceholder.kt

@@ -14,19 +14,30 @@
  * limitations under the License.
  */
 
-package com.example.jetcaster.tv.ui.component
+package com.example.jetcaster.designsystem.component
 
+import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.SolidColor
-import androidx.compose.ui.graphics.painter.BrushPainter
-import androidx.tv.material3.ExperimentalTvMaterial3Api
-import androidx.tv.material3.MaterialTheme
+import com.example.jetcaster.designsystem.theme.surfaceVariantDark
+import com.example.jetcaster.designsystem.theme.surfaceVariantLight
 
-@OptIn(ExperimentalTvMaterial3Api::class)
 @Composable
-internal fun thumbnailPlaceholder(
-    brush: Brush = SolidColor(MaterialTheme.colorScheme.surfaceVariant)
-): BrushPainter {
-    return BrushPainter(brush)
+internal fun thumbnailPlaceholderDefaultBrush(
+    color: Color = thumbnailPlaceHolderDefaultColor()
+): Brush {
+    return SolidColor(color)
+}
+
+@Composable
+private fun thumbnailPlaceHolderDefaultColor(
+    isInDarkMode: Boolean = isSystemInDarkTheme()
+): Color {
+    return if (isInDarkMode) {
+        surfaceVariantDark
+    } else {
+        surfaceVariantLight
+    }
 }

Jetcaster/tv-app/build.gradle.kts

@@ -40,8 +40,10 @@ android {
     buildTypes {
         getByName("release") {
             isMinifyEnabled = true
-            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro")
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
         }
     }
 
@@ -79,15 +81,13 @@ dependencies {
     implementation(libs.androidx.lifecycle.runtime.compose)
     implementation(libs.androidx.activity.compose)
     implementation(libs.androidx.navigation.compose)
-    implementation(libs.coil.kt.compose)
 
     // Dependency injection
     implementation(libs.androidx.hilt.navigation.compose)
     implementation(libs.hilt.android)
     implementation(project(":core:model"))
     ksp(libs.hilt.compiler)
 
-
     implementation(project(":core"))
     implementation(project(":designsystem"))
 

Jetcaster/tv-app/src/main/java/com/example/jetcaster/tv/model/PodcastList.kt

@@ -17,9 +17,9 @@
 package com.example.jetcaster.tv.model
 
 import androidx.compose.runtime.Immutable
-import com.example.jetcaster.core.data.database.model.PodcastWithExtraInfo
+import com.example.jetcaster.core.model.PodcastInfo
 
 @Immutable
 data class PodcastList(
-    val member: List<PodcastWithExtraInfo>
-) : List<PodcastWithExtraInfo> by member
+    val member: List<PodcastInfo>
+) : List<PodcastInfo> by member

Jetcaster/tv-app/src/main/java/com/example/jetcaster/tv/ui/JetcasterApp.kt

@@ -141,7 +141,7 @@ private fun Route(jetcasterAppState: JetcasterAppState) {
                 LibraryScreen(
                     navigateToDiscover = jetcasterAppState::navigateToDiscover,
                     showPodcastDetails = {
-                        jetcasterAppState.showPodcastDetails(it.podcast.uri)
+                        jetcasterAppState.showPodcastDetails(it.uri)
                     },
                     playEpisode = {
                         jetcasterAppState.playEpisode()
@@ -156,7 +156,7 @@ private fun Route(jetcasterAppState: JetcasterAppState) {
         composable(Screen.Search.route) {
             SearchScreen(
                 onPodcastSelected = {
-                    jetcasterAppState.showPodcastDetails(it.podcast.uri)
+                    jetcasterAppState.showPodcastDetails(it.uri)
                 },
                 modifier = Modifier
                     .padding(JetcasterAppDefaults.overScanMargin.default.intoPaddingValues())

Jetcaster/tv-app/src/main/java/com/example/jetcaster/tv/ui/component/Background.kt

@@ -23,43 +23,54 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
-import com.example.jetcaster.core.data.database.model.Podcast
 import com.example.jetcaster.core.model.PlayerEpisode
+import com.example.jetcaster.core.model.PodcastInfo
 import com.example.jetcaster.designsystem.component.ImageBackgroundRadialGradientScrim
 
 @Composable
-internal fun Background(
-    podcast: Podcast,
-    modifier: Modifier = Modifier,
-) = Background(imageUrl = podcast.imageUrl, modifier)
-
-@Composable
-internal fun Background(
-    episode: PlayerEpisode,
+internal fun BackgroundContainer(
+    playerEpisode: PlayerEpisode,
     modifier: Modifier = Modifier,
-) = Background(imageUrl = episode.podcastImageUrl, modifier)
+    contentAlignment: Alignment = Alignment.Center,
+    content: @Composable BoxScope.() -> Unit
+) =
+    BackgroundContainer(
+        imageUrl = playerEpisode.podcastImageUrl,
+        modifier,
+        contentAlignment,
+        content
+    )
 
 @Composable
-internal fun Background(
-    imageUrl: String?,
+internal fun BackgroundContainer(
+    podcastInfo: PodcastInfo,
     modifier: Modifier = Modifier,
-) {
-    ImageBackgroundRadialGradientScrim(
-        url = imageUrl,
-        colors = listOf(Color.Black, Color.Transparent),
-        modifier = modifier,
-    )
-}
+    contentAlignment: Alignment = Alignment.Center,
+    content: @Composable BoxScope.() -> Unit
+) =
+    BackgroundContainer(imageUrl = podcastInfo.imageUrl, modifier, contentAlignment, content)
 
 @Composable
 internal fun BackgroundContainer(
-    playerEpisode: PlayerEpisode,
+    imageUrl: String,
     modifier: Modifier = Modifier,
     contentAlignment: Alignment = Alignment.Center,
     content: @Composable BoxScope.() -> Unit
 ) {
     Box(modifier = modifier, contentAlignment = contentAlignment) {
-        Background(episode = playerEpisode, modifier = Modifier.fillMaxSize())
+        Background(imageUrl = imageUrl, modifier = Modifier.fillMaxSize())
         content()
     }
 }
+
+@Composable
+private fun Background(
+    imageUrl: String,
+    modifier: Modifier = Modifier,
+) {
+    ImageBackgroundRadialGradientScrim(
+        url = imageUrl,
+        colors = listOf(Color.Black, Color.Transparent),
+        modifier = modifier,
+    )
+}

Jetcaster/tv-app/src/main/java/com/example/jetcaster/tv/ui/component/Catalog.kt

@@ -35,8 +35,8 @@ import androidx.tv.foundation.lazy.list.rememberTvLazyListState
 import androidx.tv.material3.ExperimentalTvMaterial3Api
 import androidx.tv.material3.MaterialTheme
 import androidx.tv.material3.Text
-import com.example.jetcaster.core.data.database.model.PodcastWithExtraInfo
 import com.example.jetcaster.core.model.PlayerEpisode
+import com.example.jetcaster.core.model.PodcastInfo
 import com.example.jetcaster.tv.R
 import com.example.jetcaster.tv.model.EpisodeList
 import com.example.jetcaster.tv.model.PodcastList
@@ -46,7 +46,7 @@ import com.example.jetcaster.tv.ui.theme.JetcasterAppDefaults
 internal fun Catalog(
     podcastList: PodcastList,
     latestEpisodeList: EpisodeList,
-    onPodcastSelected: (PodcastWithExtraInfo) -> Unit,
+    onPodcastSelected: (PodcastInfo) -> Unit,
     onEpisodeSelected: (PlayerEpisode) -> Unit,
     modifier: Modifier = Modifier,
     state: TvLazyListState = rememberTvLazyListState(),
@@ -83,7 +83,7 @@ internal fun Catalog(
 @Composable
 private fun PodcastSection(
     podcastList: PodcastList,
-    onPodcastSelected: (PodcastWithExtraInfo) -> Unit,
+    onPodcastSelected: (PodcastInfo) -> Unit,
     modifier: Modifier = Modifier,
     title: String? = null,
 ) {
@@ -142,7 +142,7 @@ private fun Section(
 @Composable
 private fun PodcastRow(
     podcastList: PodcastList,
-    onPodcastSelected: (PodcastWithExtraInfo) -> Unit,
+    onPodcastSelected: (PodcastInfo) -> Unit,
     modifier: Modifier = Modifier,
     contentPadding: PaddingValues = PaddingValues(),
     horizontalArrangement: Arrangement.Horizontal =
@@ -155,7 +155,7 @@ private fun PodcastRow(
     ) {
         items(podcastList) {
             PodcastCard(
-                podcast = it.podcast,
+                podcastInfo = it,
                 onClick = { onPodcastSelected(it) },
                 modifier = Modifier.width(JetcasterAppDefaults.cardWidth.medium)
             )

Jetcaster/tv-app/src/main/java/com/example/jetcaster/tv/ui/component/EpisodeCard.kt

@@ -19,7 +19,6 @@ package com.example.jetcaster.tv.ui.component
 import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
@@ -36,7 +35,6 @@ import androidx.tv.material3.ExperimentalTvMaterial3Api
 import androidx.tv.material3.MaterialTheme
 import androidx.tv.material3.Text
 import androidx.tv.material3.WideCardLayout
-import coil.compose.AsyncImage
 import com.example.jetcaster.core.model.PlayerEpisode
 import com.example.jetcaster.tv.ui.theme.JetcasterAppDefaults
 
@@ -78,12 +76,7 @@ private fun EpisodeThumbnail(
         scale = CardScale.None,
         modifier = modifier,
     ) {
-        AsyncImage(
-            model = playerEpisode.podcastImageUrl,
-            contentDescription = null,
-            placeholder = thumbnailPlaceholder(),
-            modifier = Modifier.fillMaxSize()
-        )
+        Thumbnail(episode = playerEpisode, size = JetcasterAppDefaults.thumbnailSize.episode)
     }
 }
 

Jetcaster/tv-app/src/main/java/com/example/jetcaster/tv/ui/component/PodcastCard.kt

@@ -17,7 +17,6 @@
 package com.example.jetcaster.tv.ui.component
 
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
@@ -26,14 +25,13 @@ import androidx.tv.material3.CardScale
 import androidx.tv.material3.ExperimentalTvMaterial3Api
 import androidx.tv.material3.StandardCardLayout
 import androidx.tv.material3.Text
-import coil.compose.AsyncImage
-import com.example.jetcaster.core.data.database.model.Podcast
+import com.example.jetcaster.core.model.PodcastInfo
 import com.example.jetcaster.tv.ui.theme.JetcasterAppDefaults
 
 @OptIn(ExperimentalTvMaterial3Api::class)
 @Composable
 internal fun PodcastCard(
-    podcast: Podcast,
+    podcastInfo: PodcastInfo,
     onClick: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
@@ -44,16 +42,14 @@ internal fun PodcastCard(
                 interactionSource = it,
                 scale = CardScale.None,
             ) {
-                AsyncImage(
-                    model = podcast.imageUrl,
-                    contentDescription = null,
-                    placeholder = thumbnailPlaceholder(),
-                    modifier = Modifier.size(JetcasterAppDefaults.thumbnailSize.podcast)
+                Thumbnail(
+                    podcastInfo = podcastInfo,
+                    size = JetcasterAppDefaults.thumbnailSize.podcast
                 )
             }
         },
         title = {
-            Text(text = podcast.title, modifier = Modifier.padding(top = 12.dp))
+            Text(text = podcastInfo.title, modifier = Modifier.padding(top = 12.dp))
         },
         modifier = modifier,
     )

Jetcaster/tv-app/src/main/java/com/example/jetcaster/tv/ui/component/Thumbnail.kt

@@ -24,14 +24,14 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.unit.DpSize
 import androidx.compose.ui.unit.dp
-import coil.compose.AsyncImage
-import com.example.jetcaster.core.data.database.model.Podcast
 import com.example.jetcaster.core.model.PlayerEpisode
+import com.example.jetcaster.core.model.PodcastInfo
+import com.example.jetcaster.designsystem.component.PodcastImage
 import com.example.jetcaster.tv.ui.theme.JetcasterAppDefaults
 
 @Composable
 fun Thumbnail(
-    podcast: Podcast,
+    podcastInfo: PodcastInfo,
     modifier: Modifier = Modifier,
     shape: RoundedCornerShape = RoundedCornerShape(12.dp),
     size: DpSize = DpSize(
@@ -41,7 +41,7 @@ fun Thumbnail(
     contentScale: ContentScale = ContentScale.Crop
 ) =
     Thumbnail(
-        podcast.imageUrl,
+        podcastInfo.imageUrl,
         modifier,
         shape,
         size,
@@ -69,7 +69,7 @@ fun Thumbnail(
 
 @Composable
 fun Thumbnail(
-    url: String?,
+    url: String,
     modifier: Modifier = Modifier,
     shape: RoundedCornerShape = RoundedCornerShape(12.dp),
     size: DpSize = DpSize(
@@ -78,12 +78,11 @@ fun Thumbnail(
     ),
     contentScale: ContentScale = ContentScale.Crop
 ) =
-    AsyncImage(
-        model = url,
+    PodcastImage(
+        podcastImageUrl = url,
         contentDescription = null,
         contentScale = contentScale,
-        modifier = Modifier
-            .size(size)
+        modifier = modifier
             .clip(shape)
-            .then(modifier)
+            .size(size),
     )