Rewriting classes in kotlin

app/src/main/java/com/cappielloantonio/play/model/Album.kt

@@ -0,0 +1,74 @@
+package com.cappielloantonio.play.model
+
+import android.os.Parcelable
+import androidx.annotation.Keep
+import com.cappielloantonio.play.subsonic.models.AlbumID3
+import com.cappielloantonio.play.subsonic.models.AlbumWithSongsID3
+import com.cappielloantonio.play.util.MappingUtil
+import kotlinx.android.parcel.Parcelize
+import java.util.*
+
+@Keep
+@Parcelize
+class Album(
+    var id: String,
+    val title: String,
+    val year: Int? = 0,
+    val artistId: String,
+    val artistName: String,
+    val primary: String,
+    var starred: Boolean?,
+    val songs: List<Media>?,
+    val created: Date?
+) : Parcelable {
+
+    constructor(albumID3: AlbumID3) : this(
+        albumID3.id,
+        albumID3.name,
+        albumID3.year ?: 0,
+        albumID3.artistId,
+        albumID3.artist,
+        albumID3.coverArtId,
+        albumID3.starred != null,
+        null,
+        albumID3.created
+    )
+
+    constructor(albumWithSongsID3: AlbumWithSongsID3) : this(
+        albumWithSongsID3.id,
+        albumWithSongsID3.name,
+        albumWithSongsID3.year ?: 0,
+        albumWithSongsID3.artistId,
+        albumWithSongsID3.artist,
+        albumWithSongsID3.coverArtId,
+        albumWithSongsID3.starred != null,
+        MappingUtil.mapSong(albumWithSongsID3.songs),
+        albumWithSongsID3.created
+    )
+
+    constructor(download: Download) : this(
+        download.albumId,
+        download.albumName,
+        0,
+        download.artistId,
+        download.artistName,
+        download.primary,
+        null,
+        null,
+        null
+    )
+
+    companion object {
+        const val RECENTLY_PLAYED = "RECENTLY_PLAYED"
+        const val MOST_PLAYED = "MOST_PLAYED"
+        const val RECENTLY_ADDED = "RECENTLY_ADDED"
+        const val DOWNLOADED = "DOWNLOADED"
+        const val STARRED = "STARRED"
+        const val FROM_ARTIST = "FROM_ARTIST"
+        const val NEW_RELEASES = "NEW_RELEASES"
+        const val ORDER_BY_NAME = "ORDER_BY_NAME"
+        const val ORDER_BY_ARTIST = "ORDER_BY_ARTIST"
+        const val ORDER_BY_YEAR = "ORDER_BY_YEAR"
+        const val ORDER_BY_RANDOM = "ORDER_BY_RANDOM"
+    }
+}