Move user properties (like session keys) to their own table

db/migration/20210623155401_add_user_prefs_player_scrobbler_enabled.go

@@ -0,0 +1,45 @@
+package migrations
+
+import (
+	"database/sql"
+
+	"github.com/pressly/goose"
+)
+
+func init() {
+	goose.AddMigration(upAddUserPrefsPlayerScrobblerEnabled, downAddUserPrefsPlayerScrobblerEnabled)
+}
+
+func upAddUserPrefsPlayerScrobblerEnabled(tx *sql.Tx) error {
+	err := upAddUserPrefs(tx)
+	if err != nil {
+		return err
+	}
+	return upPlayerScrobblerEnabled(tx)
+}
+
+func upAddUserPrefs(tx *sql.Tx) error {
+	_, err := tx.Exec(`
+create table user_props
+(
+    user_id varchar not null,
+    key     varchar not null,
+    value   varchar,
+    constraint user_props_pk
+        primary key (user_id, key)
+);
+`)
+	return err
+}
+
+func upPlayerScrobblerEnabled(tx *sql.Tx) error {
+	_, err := tx.Exec(`
+alter table player add scrobble_enabled bool default true;
+`)
+	return err
+}
+
+func downAddUserPrefsPlayerScrobblerEnabled(tx *sql.Tx) error {
+	// This code is executed when the migration is rolled back.
+	return nil
+}