Fixed parameter binding in alert purge, added log.

src/alerts.js

@@ -436,20 +436,20 @@ async function alertSceneReleases() {
 }
 
 async function purgeExpiredAlerts() {
-	await knex('notifications')
+	const purgedNotifications = await knex('notifications')
 		.where((builder) => {
 			builder
 				.where('seen', true)
 				.where((seenBuilder) => {
 					seenBuilder
 						.whereNull('seen_at') // marked seen before seen_at was added
-						.orWhereRaw('seen_at < now() - interval \'? days\'', [config.alerts.seenExpiry]);
+						.orWhereRaw('seen_at < now() - (?::int * interval \'1 day\')', [config.alerts.seenExpiry]); // '? day' would be interpreted literally
 				});
 		})
-		.orWhereRaw('created_at < now() - interval \'? days\'', [config.alerts.finalExpiry]) // don't accumulate notifications indefinitely
+		.orWhereRaw('created_at < now() - (?::int * interval \'1 day\')', [config.alerts.finalExpiry]) // don't accumulate notifications indefinitely
 		.delete();
 
-	await knex('alerts')
+	const purgedAlerts = await knex('alerts')
 		.where('is_expired', true)
 		.whereNotExists(
 			knex('notifications')
@@ -458,6 +458,8 @@ async function purgeExpiredAlerts() {
 		.delete();
 
 	await knex.schema.refreshMaterializedView('alerts_users_scenes');
+
+	logger.info(`Purged ${purgedNotifications} notifications and ${purgedAlerts} alerts`);
 }
 
 export function initAlertCron() {