feat: add artist filter to album view

db/migration/20200325185135_add_album_artist_id.go

@@ -0,0 +1,33 @@
+package migration
+
+import (
+	"database/sql"
+	"github.com/pressly/goose"
+)
+
+func init() {
+	goose.AddMigration(Up20200325185135, Down20200325185135)
+}
+
+func Up20200325185135(tx *sql.Tx) error {
+	_, err := tx.Exec(`
+alter table album
+	add album_artist_id varchar(255) default '';
+create index album_artist_album_id
+	on album (album_artist_id);
+
+alter table media_file
+	add album_artist_id varchar(255) default '';
+create index media_file_artist_album_id
+	on media_file (album_artist_id);
+`)
+	if err != nil {
+		return err
+	}
+	notice(tx, "A full rescan will be performed!")
+	return forceFullRescan(tx)
+}
+
+func Down20200325185135(tx *sql.Tx) error {
+	return nil
+}