Add SongAlbumMap

app/src/main/kotlin/it/vfsfitvnm/vimusic/models/Album.kt

@@ -6,8 +6,9 @@ import androidx.room.PrimaryKey
 @Entity
 data class Album(
     @PrimaryKey val id: String,
-    val title: String,
+    val title: String?,
     val thumbnailUrl: String?,
     val year: String?,
-    val authorsText: String?
+    val authorsText: String?,
+    val shareUrl: String?
 )

app/src/main/kotlin/it/vfsfitvnm/vimusic/models/DetailedSong.kt

@@ -8,14 +8,15 @@ import androidx.room.Relation
 data class DetailedSong(
     @Embedded val song: Song,
     @Relation(
-        entity = Album::class,
-        parentColumn = "albumId",
-        entityColumn = "id"
-    ) val album: Album?,
+        entity = SongAlbumMap::class,
+        entityColumn = "songId",
+        parentColumn = "id"
+    )
+    val albumId: String?,
     @Relation(
         entity = Artist::class,
-        parentColumn = "id",
         entityColumn = "id",
+        parentColumn = "id",
         associateBy = Junction(
             value = SongArtistMap::class,
             parentColumn = "songId",

app/src/main/kotlin/it/vfsfitvnm/vimusic/models/Song.kt

@@ -3,20 +3,10 @@ package it.vfsfitvnm.vimusic.models
 import androidx.room.*
 
 
-@Entity(
-    foreignKeys = [
-        ForeignKey(
-            entity = Album::class,
-            parentColumns = ["id"],
-            childColumns = ["albumId"],
-            onDelete = ForeignKey.SET_NULL
-        ),
-    ]
-)
+@Entity
 data class Song(
     @PrimaryKey val id: String,
     val title: String,
-    val albumId: String?,
     val artistsText: String? = null,
     val durationText: String,
     val thumbnailUrl: String?,

app/src/main/kotlin/it/vfsfitvnm/vimusic/models/SongAlbumMap.kt

@@ -0,0 +1,31 @@
+package it.vfsfitvnm.vimusic.models
+
+import androidx.compose.runtime.Immutable
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.ForeignKey
+
+
+@Immutable
+@Entity(
+    primaryKeys = ["songId", "albumId"],
+    foreignKeys = [
+        ForeignKey(
+            entity = Song::class,
+            parentColumns = ["id"],
+            childColumns = ["songId"],
+            onDelete = ForeignKey.CASCADE
+        ),
+        ForeignKey(
+            entity = Album::class,
+            parentColumns = ["id"],
+            childColumns = ["albumId"],
+            onDelete = ForeignKey.CASCADE
+        )
+    ]
+)
+data class SongAlbumMap(
+    @ColumnInfo(index = true) val songId: String,
+    @ColumnInfo(index = true) val albumId: String,
+    val position: Int?
+)