Allow deleting settled autoscaling policies

src/lib/server/autoscaling/index.ts

@@ -75,6 +75,24 @@ export function saveScaling(input: unknown, id?: string, revision?: number, toke
     })();
 }
 
+export function deleteScaling(id: string, revision: number): void {
+    db().transaction(() => {
+        const policy = getScalingPolicy(id);
+        if (!policy) throw new ScalingError('Policy not found.', 404);
+        if (policy.revision !== revision) throw new ScalingError('Policy changed. Refresh before deleting.', 409);
+        // Keep admission evidence and ownership while a host command may still act.
+        if (db().prepare('SELECT 1 FROM autoscaling_decisions WHERE policy_id=? AND resolved=0').get(id)) {
+            throw new ScalingError('Pause this policy and settle its outstanding Provisioning work before deleting it.', 409);
+        }
+        revokePolicyRemovals(id);
+        db().prepare('DELETE FROM autoscaling_authorizations WHERE policy_id=?').run(id);
+        db().prepare('DELETE FROM autoscaling_members WHERE policy_id=?').run(id);
+        db().prepare('DELETE FROM autoscaling_samples WHERE policy_id=?').run(id);
+        db().prepare('DELETE FROM autoscaling_decisions WHERE policy_id=?').run(id);
+        db().prepare('DELETE FROM autoscaling_policies WHERE id=?').run(id);
+    })();
+}
+
 export function setScalingGlobalPause(paused: boolean): void {
     db().transaction(() => {
         db().prepare("INSERT INTO settings(key,value) VALUES('autoscaling_paused',?) ON CONFLICT(key) DO UPDATE SET value=excluded.value").run(paused ? '1' : '0');