music: group albums by raw artist keys

Properly group albums by raw artist keys, instead of by raw artist
instances.

This was an accidental regression in 3.1.1 that resulted in duplicate
albums in some circumstances.

Resolves #475.

app/src/main/java/org/oxycblt/auxio/music/device/DeviceMusicImpl.kt

@@ -38,7 +38,6 @@ import org.oxycblt.auxio.music.info.ReleaseType
 import org.oxycblt.auxio.music.metadata.parseId3GenreNames
 import org.oxycblt.auxio.music.metadata.parseMultiValue
 import org.oxycblt.auxio.playback.replaygain.ReplayGainAdjustment
-import org.oxycblt.auxio.util.logD
 import org.oxycblt.auxio.util.nonZeroOrNull
 import org.oxycblt.auxio.util.toUuidOrNull
 import org.oxycblt.auxio.util.unlikelyToBeNull
@@ -92,16 +91,13 @@ class SongImpl(private val rawSong: RawSong, musicSettings: MusicSettings) : Son
     override val durationMs = requireNotNull(rawSong.durationMs) { "Invalid raw: No duration" }
     override val replayGainAdjustment =
         if (rawSong.replayGainTrackAdjustment != null &&
-                rawSong.replayGainAlbumAdjustment != null) {
-                ReplayGainAdjustment(
-                    track = unlikelyToBeNull(rawSong.replayGainTrackAdjustment),
-                    album = unlikelyToBeNull(rawSong.replayGainAlbumAdjustment))
-            } else {
-                null
-            }
-            .also {
-                logD("${rawSong.replayGainTrackAdjustment} ${rawSong.replayGainAlbumAdjustment}}")
-            }
+            rawSong.replayGainAlbumAdjustment != null) {
+            ReplayGainAdjustment(
+                track = unlikelyToBeNull(rawSong.replayGainTrackAdjustment),
+                album = unlikelyToBeNull(rawSong.replayGainAlbumAdjustment))
+        } else {
+            null
+        }
     override val dateAdded = requireNotNull(rawSong.dateAdded) { "Invalid raw: No date added" }
     private var _album: AlbumImpl? = null
     override val album: Album

app/src/main/java/org/oxycblt/auxio/music/device/RawMusic.kt

@@ -25,6 +25,7 @@ import org.oxycblt.auxio.music.Song
 import org.oxycblt.auxio.music.fs.Directory
 import org.oxycblt.auxio.music.info.Date
 import org.oxycblt.auxio.music.info.ReleaseType
+import org.oxycblt.auxio.util.logD
 
 /**
  * Raw information about a [SongImpl] obtained from the filesystem/Extractor instances.
@@ -128,10 +129,12 @@ data class RawAlbum(
         // artist name. This allows for case-insensitive artist/album grouping, which can be common
         // for albums/artists that have different naming (ex. "RAMMSTEIN" vs. "Rammstein").
 
+        private val artistKeys = inner.rawArtists.map { it.key }
+
         // Cache the hash-code for HashMap efficiency.
         private val hashCode =
             inner.musicBrainzId?.hashCode()
-                ?: (31 * inner.name.lowercase().hashCode() + inner.rawArtists.hashCode())
+                ?: (31 * inner.name.lowercase().hashCode() + artistKeys.hashCode())
 
         override fun hashCode() = hashCode
 
@@ -141,8 +144,7 @@ data class RawAlbum(
                     inner.musicBrainzId != null && other.inner.musicBrainzId != null ->
                         inner.musicBrainzId == other.inner.musicBrainzId
                     inner.musicBrainzId == null && other.inner.musicBrainzId == null ->
-                        inner.name.equals(other.inner.name, true) &&
-                            inner.rawArtists == other.inner.rawArtists
+                        inner.name.equals(other.inner.name, true) && artistKeys == other.artistKeys
                     else -> false
                 }
     }
@@ -176,7 +178,11 @@ data class RawArtist(
         // grouping to be case-insensitive.
 
         // Cache the hashCode for HashMap efficiency.
-        private val hashCode = inner.musicBrainzId?.hashCode() ?: inner.name?.lowercase().hashCode()
+        val hashCode = inner.musicBrainzId?.hashCode() ?: inner.name?.lowercase().hashCode()
+
+        init {
+            logD("${inner.name} ${inner.name?.lowercase().hashCode()} $hashCode")
+        }
 
         // Compare names and MusicBrainz IDs in order to differentiate artists with the
         // same name in large libraries.

app/src/main/java/org/oxycblt/auxio/music/info/Name.kt

@@ -203,7 +203,8 @@ private data class IntelligentKnownName(override val raw: String, override val s
             // Separate each token into their numeric and lexicographic counterparts.
             if (token.first().isDigit()) {
                 // The digit string comparison breaks with preceding zero digits, remove those
-                val digits = token.trimStart { Character.getNumericValue(it) == 0 }.ifEmpty { token }
+                val digits =
+                    token.trimStart { Character.getNumericValue(it) == 0 }.ifEmpty { token }
                 // Other languages have other types of digit strings, still use collation keys
                 collationKey = COLLATOR.getCollationKey(digits)
                 type = SortToken.Type.NUMERIC