Fas 2 steg 2: Inventory Trust Engine - decay-profiler och cache-jobb

apps/api/src/lib/helpers.ts

@@ -2,6 +2,7 @@ import { createHash, randomBytes, randomUUID } from "node:crypto";
 import { and, eq } from "drizzle-orm";
 import type { Database } from "@app/database";
 import { schema } from "@app/database";
+import type { DecayProfile } from "@app/inventory-engine";
 import type { EventType } from "@app/shared-types";
 import type { NewDomainEvent } from "@app/events";
 import { errors } from "./errors.js";
@@ -145,3 +146,18 @@ export async function audit(
 export function newCorrelationId(): string {
   return randomUUID();
 }
+
+/** Hämta den aktiva trust-decay-profilen. Cachas i praktiken av databasen;
+ *  funktionen returnerar alltid en giltig profil (default fallback). */
+export async function getActiveDecayProfile(db: Database): Promise<DecayProfile> {
+  const [profile] = await db
+    .select({ halfLifeDays: schema.inventoryDecayProfiles.halfLifeDays, staleAfterDays: schema.inventoryDecayProfiles.staleAfterDays })
+    .from(schema.inventoryDecayProfiles)
+    .where(eq(schema.inventoryDecayProfiles.active, true))
+    .orderBy(schema.inventoryDecayProfiles.createdAt)
+    .limit(1);
+  return {
+    halfLifeDays: profile?.halfLifeDays ?? 7,
+    staleAfterDays: profile?.staleAfterDays ?? 30,
+  };
+}