74: Add logs for queue management

app/src/main/java/audio/funkwhale/ffa/playback/CacheDataSourceFactoryProvider.kt

+package audio.funkwhale.ffa.playback
+
+import android.content.Context
+import audio.funkwhale.ffa.R
+import audio.funkwhale.ffa.utils.OAuth
+import audio.funkwhale.ffa.utils.Settings
+import com.google.android.exoplayer2.upstream.DataSource
+import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory
+import com.google.android.exoplayer2.upstream.FileDataSource
+import com.google.android.exoplayer2.upstream.cache.Cache
+import com.google.android.exoplayer2.upstream.cache.CacheDataSource
+import com.google.android.exoplayer2.upstream.cache.CacheDataSourceFactory
+import com.google.android.exoplayer2.util.Util
+
+class CacheDataSourceFactoryProvider(
+    private val oAuth: OAuth,
+    private val exoCache: Cache,
+    private val exoDownloadCache: Cache
+) {
+
+  fun create(context: Context): CacheDataSourceFactory {
+
+    val playbackCache =
+        CacheDataSourceFactory(exoCache, createDatasourceFactory(context, oAuth))
+
+    return CacheDataSourceFactory(
+        exoDownloadCache,
+        playbackCache,
+        FileDataSource.Factory(),
+        null,
+        CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR,
+        null
+    )
+  }
+
+  private fun createDatasourceFactory(context: Context, oAuth: OAuth): DataSource.Factory {
+    val http = DefaultHttpDataSourceFactory(
+        Util.getUserAgent(context, context.getString(R.string.app_name))
+    )
+    return if (!Settings.isAnonymous()) {
+        OAuth2DatasourceFactory(context, http, oAuth)
+    } else {
+      http
+    }
+  }
+}
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