drop the legacy stream-quality fallback

No need to migrate the old max_bitrate/stream_format keys.

app/src/main/kotlin/com/subtracks/data/prefs/UserPreferences.kt

@@ -4,7 +4,6 @@ import android.content.Context
 import androidx.datastore.core.DataStore
 import androidx.datastore.preferences.core.Preferences
 import androidx.datastore.preferences.core.edit
-import androidx.datastore.preferences.core.intPreferencesKey
 import androidx.datastore.preferences.core.stringPreferencesKey
 import androidx.datastore.preferences.preferencesDataStore
 import com.subtracks.data.net.NetworkMode
@@ -58,9 +57,7 @@ class UserPreferences(
 
     fun streamQuality(mode: NetworkMode): Flow<StreamQuality> =
         store.data.map { prefs ->
-            prefs[streamQualityKey(mode)]?.let(::decodeStreamQuality)
+            prefs[streamQualityKey(mode)]?.let(::decodeStreamQuality) ?: defaultStreamQuality(mode)
-                ?: legacyStreamQuality(prefs)
-                ?: defaultStreamQuality(mode)
         }
 
     suspend fun setStreamQuality(
@@ -86,16 +83,6 @@ class UserPreferences(
         )
     }
 
-    private fun legacyStreamQuality(prefs: Preferences): StreamQuality? {
-        val bitrate = prefs[LEGACY_BITRATE]
-        val format = prefs[LEGACY_FORMAT]
-        if (bitrate == null && format == null) return null
-        return StreamQuality(
-            maxBitrate = bitrate ?: 0,
-            format = format?.takeIf { it.isNotEmpty() },
-        )
-    }
-
     private fun defaultStreamQuality(mode: NetworkMode): StreamQuality =
         when (mode) {
             NetworkMode.Wifi -> StreamQuality()
@@ -114,11 +101,6 @@ class UserPreferences(
             starred = StarredFilter.entries.getOrElse(parts[2].toIntOrNull() ?: 0) { StarredFilter.Any },
         )
     }
-
-    private companion object {
-        val LEGACY_BITRATE = intPreferencesKey("max_bitrate")
-        val LEGACY_FORMAT = stringPreferencesKey("stream_format")
-    }
 }
 
 fun createUserPreferences(context: Context): UserPreferences = UserPreferences(context.preferences)

app/src/test/kotlin/com/subtracks/data/prefs/UserPreferencesTest.kt

@@ -1,9 +1,6 @@
 package com.subtracks.data.prefs
 
 import androidx.datastore.preferences.core.PreferenceDataStoreFactory
-import androidx.datastore.preferences.core.edit
-import androidx.datastore.preferences.core.intPreferencesKey
-import androidx.datastore.preferences.core.stringPreferencesKey
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import com.subtracks.data.net.NetworkMode
 import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -58,28 +55,6 @@ class UserPreferencesTest {
             assertEquals(StreamQuality(320, null), prefs.streamQuality(NetworkMode.Wifi).first())
             assertEquals(StreamQuality(96, "opus"), prefs.streamQuality(NetworkMode.Mobile).first())
 
-            file.delete()
-        }
-
-    @Test
-    fun streamQualityFallsBackToTheLegacySingleValue() =
-        runTest {
-            val file = File.createTempFile("user-prefs", ".preferences_pb").apply { delete() }
-            val store = PreferenceDataStoreFactory.create(scope = backgroundScope) { file }
-            store.edit { prefs ->
-                prefs[intPreferencesKey("max_bitrate")] = 192
-                prefs[stringPreferencesKey("stream_format")] = "mp3"
-            }
-            val prefs = UserPreferences(store)
-
-            assertEquals(StreamQuality(192, "mp3"), prefs.streamQuality(NetworkMode.Wifi).first())
-            assertEquals(StreamQuality(192, "mp3"), prefs.streamQuality(NetworkMode.Mobile).first())
-
-            prefs.setStreamQuality(NetworkMode.Mobile, StreamQuality(64, null))
-
-            assertEquals(StreamQuality(192, "mp3"), prefs.streamQuality(NetworkMode.Wifi).first())
-            assertEquals(StreamQuality(64, null), prefs.streamQuality(NetworkMode.Mobile).first())
-
             file.delete()
         }
 }