feat: wire album art to UI and handle Android 13+ notification permission

Made-with: Cursor

app/src/main/java/xyz/cottongin/radio247/MainActivity.kt

@@ -1,13 +1,21 @@
 package xyz.cottongin.radio247
 
+import android.Manifest
+import android.content.pm.PackageManager
+import android.os.Build
 import android.os.Bundle
 import androidx.activity.ComponentActivity
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.core.content.ContextCompat
 import androidx.activity.compose.BackHandler
 import androidx.activity.compose.setContent
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
+import androidx.compose.ui.platform.LocalContext
 import xyz.cottongin.radio247.ui.navigation.Screen
 import xyz.cottongin.radio247.ui.screens.nowplaying.NowPlayingScreen
 import xyz.cottongin.radio247.ui.screens.settings.SettingsScreen
@@ -18,6 +26,17 @@ class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContent {
+            val requestNotificationPermission = rememberLauncherForActivityResult(
+                contract = ActivityResultContracts.RequestPermission()
+            ) { _ -> }
+            val context = LocalContext.current
+            LaunchedEffect(Unit) {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU &&
+                    ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED
+                ) {
+                    requestNotificationPermission.launch(Manifest.permission.POST_NOTIFICATIONS)
+                }
+            }
             Radio247Theme {
                 var currentScreen by remember { mutableStateOf<Screen>(Screen.StationList) }
 

app/src/main/java/xyz/cottongin/radio247/RadioApplication.kt

@@ -4,7 +4,9 @@ import android.app.Application
 import androidx.room.Room
 import xyz.cottongin.radio247.data.db.RadioDatabase
 import xyz.cottongin.radio247.data.prefs.RadioPreferences
+import xyz.cottongin.radio247.metadata.AlbumArtResolver
 import xyz.cottongin.radio247.service.RadioController
+import okhttp3.OkHttpClient
 
 class RadioApplication : Application() {
     val database: RadioDatabase by lazy {
@@ -19,4 +21,12 @@ class RadioApplication : Application() {
     val controller: RadioController by lazy {
         RadioController(this)
     }
+
+    val okHttpClient: OkHttpClient by lazy {
+        OkHttpClient.Builder().build()
+    }
+
+    val albumArtResolver: AlbumArtResolver by lazy {
+        AlbumArtResolver(okHttpClient)
+    }
 }

app/src/main/java/xyz/cottongin/radio247/ui/screens/nowplaying/NowPlayingScreen.kt

@@ -1,6 +1,7 @@
 package xyz.cottongin.radio247.ui.screens.nowplaying
 
 import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Row
@@ -38,6 +39,7 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
+import coil3.compose.AsyncImage
 import xyz.cottongin.radio247.R
 import xyz.cottongin.radio247.audio.IcyMetadata
 import xyz.cottongin.radio247.service.PlaybackState
@@ -54,6 +56,7 @@ fun NowPlayingScreen(
     )
 ) {
     val playbackState by viewModel.playbackState.collectAsState()
+    val artworkUrl by viewModel.artworkUrl.collectAsState()
     val sessionElapsed by viewModel.sessionElapsed.collectAsState()
     val connectionElapsed by viewModel.connectionElapsed.collectAsState()
     val estimatedLatencyMs by viewModel.estimatedLatencyMs.collectAsState()
@@ -110,14 +113,24 @@ fun NowPlayingScreen(
                             shape = MaterialTheme.shapes.medium
                         ) {
                             Box(
-                                modifier = Modifier.fillMaxSize(),
+                                modifier = Modifier
+                                    .fillMaxSize()
+                                    .background(MaterialTheme.colorScheme.surfaceVariant),
                                 contentAlignment = Alignment.Center
                             ) {
-                                Image(
-                                    painter = painterResource(R.drawable.ic_radio_placeholder),
-                                    contentDescription = null,
-                                    modifier = Modifier.size(120.dp)
-                                )
+                                if (artworkUrl != null) {
+                                    AsyncImage(
+                                        model = artworkUrl,
+                                        contentDescription = null,
+                                        modifier = Modifier.fillMaxSize()
+                                    )
+                                } else {
+                                    Image(
+                                        painter = painterResource(R.drawable.ic_radio_placeholder),
+                                        contentDescription = null,
+                                        modifier = Modifier.size(120.dp)
+                                    )
+                                }
                             }
                         }
 

app/src/main/java/xyz/cottongin/radio247/ui/screens/nowplaying/NowPlayingViewModel.kt

@@ -5,9 +5,12 @@ import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.viewModelScope
 import xyz.cottongin.radio247.RadioApplication
 import xyz.cottongin.radio247.service.PlaybackState
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.stateIn
@@ -29,9 +32,14 @@ class NowPlayingViewModel(application: Application) : AndroidViewModel(applicati
         0
     )
 
+    private val _artworkUrl = MutableStateFlow<String?>(null)
+    val artworkUrl: StateFlow<String?> = _artworkUrl.asStateFlow()
+
     val sessionElapsed: StateFlow<Long>
     val connectionElapsed: StateFlow<Long>
 
+    private var artworkResolveJob: Job? = null
+
     init {
         val ticker = flow {
             while (true) {
@@ -54,6 +62,37 @@ class NowPlayingViewModel(application: Application) : AndroidViewModel(applicati
                 else -> 0L
             }
         }.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), 0L)
+
+        viewModelScope.launch {
+            playbackState.collect { state ->
+                val (station, metadata) = when (state) {
+                    is PlaybackState.Playing -> state.station to state.metadata
+                    is PlaybackState.Reconnecting -> state.station to state.metadata
+                    PlaybackState.Idle -> null to null
+                }
+                when (state) {
+                    is PlaybackState.Playing,
+                    is PlaybackState.Reconnecting -> {
+                        artworkResolveJob?.cancel()
+                        artworkResolveJob = viewModelScope.launch {
+                            val url = station?.let { s ->
+                                app.albumArtResolver.resolve(
+                                    artist = metadata?.artist,
+                                    title = metadata?.title,
+                                    icyStreamUrl = metadata?.streamUrl,
+                                    stationArtworkUrl = s.defaultArtworkUrl
+                                )
+                            }
+                            _artworkUrl.value = url
+                        }
+                    }
+                    PlaybackState.Idle -> {
+                        artworkResolveJob?.cancel()
+                        _artworkUrl.value = null
+                    }
+                }
+            }
+        }
     }
 
     fun stop() {