refactor(download): share download UI handling

app/src/main/java/hu/bbara/purefin/ui/common/permission/NotificationPermissionGate.kt

@@ -0,0 +1,33 @@
+package hu.bbara.purefin.ui.common.permission
+
+import android.Manifest
+import android.os.Build
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+
+@Composable
+fun rememberNotificationPermissionGate(): (action: () -> Unit) -> Unit {
+    val pendingAction = remember { mutableStateOf<(() -> Unit)?>(null) }
+    val launcher = rememberLauncherForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) {
+        // Proceed regardless — notification permission is nice-to-have for downloads.
+        val action = pendingAction.value
+        pendingAction.value = null
+        action?.invoke()
+    }
+
+    return remember(launcher) {
+        { action ->
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+                pendingAction.value = action
+                launcher.launch(Manifest.permission.POST_NOTIFICATIONS)
+            } else {
+                action()
+            }
+        }
+    }
+}

app/src/main/java/hu/bbara/purefin/ui/screen/episode/EpisodeScreen.kt

@@ -1,20 +1,16 @@
 package hu.bbara.purefin.ui.screen.episode
 
-import android.Manifest
-import android.os.Build
-import androidx.activity.compose.rememberLauncherForActivityResult
-import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
-import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.sp
 import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import hu.bbara.purefin.core.download.DownloadState
 import hu.bbara.purefin.core.feature.content.episode.EpisodeScreenViewModel
 import hu.bbara.purefin.core.image.ArtworkKind
@@ -26,6 +22,7 @@ import hu.bbara.purefin.model.Episode
 import hu.bbara.purefin.navigation.LocalNavigationBackStack
 import hu.bbara.purefin.ui.common.media.MediaDetailScaffold
 import hu.bbara.purefin.ui.common.media.MediaMetadataFlowRow
+import hu.bbara.purefin.ui.common.permission.rememberNotificationPermissionGate
 import hu.bbara.purefin.ui.screen.episode.components.EpisodeDetails
 import hu.bbara.purefin.ui.screen.episode.components.EpisodeTopBar
 import hu.bbara.purefin.ui.screen.episode.components.EpisodeTopBarShortcut
@@ -48,19 +45,13 @@ fun EpisodeScreen(
 
     val episode = viewModel.episode.collectAsStateWithLifecycle()
     val downloadState = viewModel.downloadState.collectAsStateWithLifecycle()
-
+    val requestNotificationPermission = rememberNotificationPermissionGate()
-    val notificationPermissionLauncher = rememberLauncherForActivityResult(
-        ActivityResultContracts.RequestPermission()
-    ) { _ ->
-        // Proceed with download regardless — notification is nice-to-have
-        viewModel.onDownloadClick()
-    }
 
     val onDownloadClick = {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
+        if (downloadState.value is DownloadState.NotDownloaded) {
-            && downloadState.value is DownloadState.NotDownloaded
+            requestNotificationPermission {
-        ) {
+                viewModel.onDownloadClick()
-            notificationPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+            }
         } else {
             viewModel.onDownloadClick()
         }

app/src/main/java/hu/bbara/purefin/ui/screen/episode/components/EpisodeComponents.kt

@@ -10,9 +10,6 @@ import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.ArrowBack
 import androidx.compose.material.icons.outlined.Cast
-import androidx.compose.material.icons.outlined.Close
-import androidx.compose.material.icons.outlined.Download
-import androidx.compose.material.icons.outlined.DownloadDone
 import androidx.compose.material.icons.outlined.MoreVert
 import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.MaterialTheme
@@ -32,8 +29,8 @@ import androidx.compose.ui.unit.sp
 import hu.bbara.purefin.core.download.DownloadState
 import hu.bbara.purefin.model.Episode
 import hu.bbara.purefin.player.PlayerActivity
+import hu.bbara.purefin.ui.common.button.DownloadActionButton
 import hu.bbara.purefin.ui.common.button.GhostIconButton
-import hu.bbara.purefin.ui.common.button.MediaActionButton
 import hu.bbara.purefin.ui.common.button.MediaResumeButton
 import hu.bbara.purefin.ui.common.media.MediaPlaybackSettings
 import hu.bbara.purefin.ui.common.media.MediaSynopsis
@@ -137,16 +134,8 @@ internal fun EpisodeDetails(
                 .padding(horizontal = 16.dp, vertical = 8.dp)
         )
         Row() {
-            MediaActionButton(
+            DownloadActionButton(
-                backgroundColor = MaterialTheme.colorScheme.surface,
+                downloadState = downloadState,
-                iconColor = MaterialTheme.colorScheme.onSurface,
-                icon = when (downloadState) {
-                    is DownloadState.NotDownloaded -> Icons.Outlined.Download
-                    is DownloadState.Downloading -> Icons.Outlined.Close
-                    is DownloadState.Downloaded -> Icons.Outlined.DownloadDone
-                    is DownloadState.Failed -> Icons.Outlined.Download
-                },
-                height = 48.dp,
                 modifier = Modifier.testTag(EpisodeDownloadButtonTag),
                 onClick = onDownloadClick
             )

app/src/main/java/hu/bbara/purefin/ui/screen/movie/MovieScreen.kt

@@ -1,19 +1,15 @@
 package hu.bbara.purefin.ui.screen.movie
 
-import android.Manifest
-import android.os.Build
-import androidx.activity.compose.rememberLauncherForActivityResult
-import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
-import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.sp
 import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import hu.bbara.purefin.core.download.DownloadState
 import hu.bbara.purefin.core.feature.content.movie.MovieScreenViewModel
 import hu.bbara.purefin.core.image.ArtworkKind
@@ -23,6 +19,7 @@ import hu.bbara.purefin.model.CastMember
 import hu.bbara.purefin.model.Movie
 import hu.bbara.purefin.ui.common.media.MediaDetailScaffold
 import hu.bbara.purefin.ui.common.media.MediaMetadataFlowRow
+import hu.bbara.purefin.ui.common.permission.rememberNotificationPermissionGate
 import hu.bbara.purefin.ui.screen.movie.components.MovieDetails
 import hu.bbara.purefin.ui.screen.movie.components.MovieTopBar
 import hu.bbara.purefin.ui.screen.waiting.PurefinWaitingScreen
@@ -41,19 +38,13 @@ fun MovieScreen(
 
     val movieItem = viewModel.movie.collectAsStateWithLifecycle()
     val downloadState = viewModel.downloadState.collectAsStateWithLifecycle()
-
+    val requestNotificationPermission = rememberNotificationPermissionGate()
-    val notificationPermissionLauncher = rememberLauncherForActivityResult(
-        ActivityResultContracts.RequestPermission()
-    ) { granted ->
-        // Proceed with download regardless — notification is nice-to-have
-        viewModel.onDownloadClick()
-    }
 
     val onDownloadClick = {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
+        if (downloadState.value is DownloadState.NotDownloaded) {
-            && downloadState.value is DownloadState.NotDownloaded
+            requestNotificationPermission {
-        ) {
+                viewModel.onDownloadClick()
-            notificationPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+            }
         } else {
             viewModel.onDownloadClick()
         }

app/src/main/java/hu/bbara/purefin/ui/screen/movie/components/MovieComponents.kt

@@ -10,9 +10,6 @@ import androidx.compose.foundation.layout.sizeIn
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.ArrowBack
 import androidx.compose.material.icons.outlined.Cast
-import androidx.compose.material.icons.outlined.Close
-import androidx.compose.material.icons.outlined.Download
-import androidx.compose.material.icons.outlined.DownloadDone
 import androidx.compose.material.icons.outlined.MoreVert
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
@@ -28,8 +25,8 @@ import androidx.compose.ui.unit.sp
 import hu.bbara.purefin.core.download.DownloadState
 import hu.bbara.purefin.model.Movie
 import hu.bbara.purefin.player.PlayerActivity
+import hu.bbara.purefin.ui.common.button.DownloadActionButton
 import hu.bbara.purefin.ui.common.button.GhostIconButton
-import hu.bbara.purefin.ui.common.button.MediaActionButton
 import hu.bbara.purefin.ui.common.button.MediaResumeButton
 import hu.bbara.purefin.ui.common.media.MediaPlaybackSettings
 import hu.bbara.purefin.ui.common.media.MediaSynopsis
@@ -98,16 +95,8 @@ internal fun MovieDetails(
                 .padding(horizontal = 16.dp, vertical = 8.dp)
         )
         Row() {
-            MediaActionButton(
+            DownloadActionButton(
-                backgroundColor = MaterialTheme.colorScheme.surface,
+                downloadState = downloadState,
-                iconColor = MaterialTheme.colorScheme.onSurface,
-                icon = when (downloadState) {
-                    is DownloadState.NotDownloaded -> Icons.Outlined.Download
-                    is DownloadState.Downloading -> Icons.Outlined.Close
-                    is DownloadState.Downloaded -> Icons.Outlined.DownloadDone
-                    is DownloadState.Failed -> Icons.Outlined.Download
-                },
-                height = 48.dp,
                 modifier = Modifier.testTag(MovieDownloadButtonTag),
                 onClick = onDownloadClick
             )

app/src/main/java/hu/bbara/purefin/ui/screen/series/SeriesScreen.kt

@@ -1,9 +1,5 @@
 package hu.bbara.purefin.ui.screen.series
 
-import android.Manifest
-import android.os.Build
-import androidx.activity.compose.rememberLauncherForActivityResult
-import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.height
 import androidx.compose.material3.MaterialTheme
@@ -32,6 +28,7 @@ import hu.bbara.purefin.model.Season
 import hu.bbara.purefin.model.Series
 import hu.bbara.purefin.ui.common.media.MediaDetailScaffold
 import hu.bbara.purefin.ui.common.media.MediaSynopsis
+import hu.bbara.purefin.ui.common.permission.rememberNotificationPermissionGate
 import hu.bbara.purefin.ui.screen.series.components.CastRow
 import hu.bbara.purefin.ui.screen.series.components.EpisodeCarousel
 import hu.bbara.purefin.ui.screen.series.components.SeasonTabs
@@ -54,37 +51,7 @@ fun SeriesScreen(
     }
 
     val seriesState = viewModel.series.collectAsStateWithLifecycle()
-    var pendingDownloadOption by remember { mutableStateOf<Pair<SeriesDownloadOption, Season>?>(null) }
+    val requestNotificationPermission = rememberNotificationPermissionGate()
-
-    val notificationPermissionLauncher = rememberLauncherForActivityResult(
-        ActivityResultContracts.RequestPermission()
-    ) { _ ->
-        // Proceed with download regardless — notification is nice-to-have
-        val pendingOption = pendingDownloadOption
-        pendingDownloadOption = null
-        val (option, selectedSeason) = pendingOption ?: return@rememberLauncherForActivityResult
-        val seriesData = seriesState.value ?: return@rememberLauncherForActivityResult
-        val canPerformOption = when (option) {
-            SeriesDownloadOption.SEASON -> viewModel.seasonDownloadState.value is DownloadState.NotDownloaded
-            SeriesDownloadOption.SERIES -> viewModel.seriesDownloadState.value is DownloadState.NotDownloaded
-            SeriesDownloadOption.SMART -> !viewModel.isSmartDownloadEnabled.value
-            SeriesDownloadOption.DELETE_SMART -> true
-        }
-        if (!canPerformOption) return@rememberLauncherForActivityResult
-        when (option) {
-            SeriesDownloadOption.SEASON ->
-                viewModel.downloadSeason(seriesData.id, selectedSeason.id)
-
-            SeriesDownloadOption.SERIES ->
-                viewModel.downloadSeries(seriesData)
-
-            SeriesDownloadOption.SMART ->
-                viewModel.enableSmartDownload(seriesData.id)
-
-            SeriesDownloadOption.DELETE_SMART ->
-                viewModel.deleteSmartDownloads(seriesData.id)
-        }
-    }
 
     val seriesData = seriesState.value
     if (seriesData != null) {
@@ -95,15 +62,14 @@ fun SeriesScreen(
         val seasonDownloadState = viewModel.seasonDownloadState.collectAsStateWithLifecycle().value
         val isSmartDownloadEnabled = viewModel.isSmartDownloadEnabled.collectAsStateWithLifecycle().value
 
-        fun canPerformDownloadOption(option: SeriesDownloadOption): Boolean = when (option) {
+        fun canPerformDownloadOption(option: SeriesDownloadOption): Boolean =
-            SeriesDownloadOption.SEASON -> seasonDownloadState is DownloadState.NotDownloaded
+            option.canPerform(
-            SeriesDownloadOption.SERIES -> seriesDownloadState is DownloadState.NotDownloaded
+                seriesDownloadState = seriesDownloadState,
-            SeriesDownloadOption.SMART -> !isSmartDownloadEnabled
+                seasonDownloadState = seasonDownloadState,
-            SeriesDownloadOption.DELETE_SMART -> true
+                isSmartDownloadEnabled = isSmartDownloadEnabled
-        }
+            )
 
         fun performDownloadOption(option: SeriesDownloadOption, selectedSeason: Season) {
-            if (!canPerformDownloadOption(option)) return
             when (option) {
                 SeriesDownloadOption.SEASON ->
                     viewModel.downloadSeason(seriesData.id, selectedSeason.id)
@@ -119,16 +85,6 @@ fun SeriesScreen(
             }
         }
 
-        fun shouldRequestNotificationPermission(option: SeriesDownloadOption): Boolean {
-            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) return false
-            return when (option) {
-                SeriesDownloadOption.SEASON,
-                SeriesDownloadOption.SERIES,
-                SeriesDownloadOption.SMART -> canPerformDownloadOption(option)
-                SeriesDownloadOption.DELETE_SMART -> false
-            }
-        }
-
         SeriesScreenInternal(
             series = seriesData,
             seriesDownloadState = seriesDownloadState,
@@ -136,9 +92,10 @@ fun SeriesScreen(
             isSmartDownloadEnabled = isSmartDownloadEnabled,
             onDownloadOptionSelected = { option, selectedSeason ->
                 if (canPerformDownloadOption(option)) {
-                    if (shouldRequestNotificationPermission(option)) {
+                    if (option.requiresNotificationPermission()) {
-                        pendingDownloadOption = option to selectedSeason
+                        requestNotificationPermission {
-                        notificationPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+                            performDownloadOption(option, selectedSeason)
+                        }
                     } else {
                         performDownloadOption(option, selectedSeason)
                     }
@@ -264,6 +221,24 @@ private fun SeriesHeroContent(
     SeriesMetaChips(series = series)
 }
 
+private fun SeriesDownloadOption.canPerform(
+    seriesDownloadState: DownloadState,
+    seasonDownloadState: DownloadState,
+    isSmartDownloadEnabled: Boolean,
+): Boolean = when (this) {
+    SeriesDownloadOption.SEASON -> seasonDownloadState is DownloadState.NotDownloaded
+    SeriesDownloadOption.SERIES -> seriesDownloadState is DownloadState.NotDownloaded
+    SeriesDownloadOption.SMART -> !isSmartDownloadEnabled
+    SeriesDownloadOption.DELETE_SMART -> true
+}
+
+private fun SeriesDownloadOption.requiresNotificationPermission(): Boolean = when (this) {
+    SeriesDownloadOption.SEASON,
+    SeriesDownloadOption.SERIES,
+    SeriesDownloadOption.SMART -> true
+    SeriesDownloadOption.DELETE_SMART -> false
+}
+
 @Preview(showBackground = true)
 @Composable
 private fun SeriesScreenPreview() {

core-ui/src/main/java/hu/bbara/purefin/ui/common/button/DownloadActionButton.kt

@@ -0,0 +1,34 @@
+package hu.bbara.purefin.ui.common.button
+
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.Close
+import androidx.compose.material.icons.outlined.Download
+import androidx.compose.material.icons.outlined.DownloadDone
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import hu.bbara.purefin.core.download.DownloadState
+
+@Composable
+fun DownloadActionButton(
+    downloadState: DownloadState,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    height: Dp = 48.dp,
+) {
+    MediaActionButton(
+        backgroundColor = MaterialTheme.colorScheme.surface,
+        iconColor = MaterialTheme.colorScheme.onSurface,
+        icon = when (downloadState) {
+            is DownloadState.NotDownloaded -> Icons.Outlined.Download
+            is DownloadState.Downloading -> Icons.Outlined.Close
+            is DownloadState.Downloaded -> Icons.Outlined.DownloadDone
+            is DownloadState.Failed -> Icons.Outlined.Download
+        },
+        height = height,
+        modifier = modifier,
+        onClick = onClick
+    )
+}