fix tests

api/src/modules/algorithms/computeSubResourceCacheTTL.ts

@@ -0,0 +1,57 @@
+/**
+ * computeSubResourceCacheTTL
+ *
+ * Computes the Redis TTL (in milliseconds) for opportunity sub-resources
+ * (notes, contacts, activities, etc.) that share the parent opportunity's
+ * activity window.
+ *
+ * Rules are identical to the main opportunity TTL but use different
+ * exported constant names so callers can distinguish them.
+ */
+
+export const SUB_TTL_HIGH_ACTIVITY = 60_000;      // 60 seconds
+export const SUB_TTL_MODERATE_ACTIVITY = 120_000; // 2 minutes
+export const SUB_TTL_LOW_ACTIVITY = 300_000;      // 5 minutes
+
+export interface ComputeSubResourceCacheTTLInput {
+  closedFlag: boolean;
+  closedDate: Date | null;
+  expectedCloseDate: Date | null;
+  lastUpdated: Date | null;
+  now?: Date;
+}
+
+const DAY_MS = 24 * 60 * 60 * 1000;
+
+function ageMs(date: Date, now: Date): number {
+  return Math.abs(now.getTime() - date.getTime());
+}
+
+export function computeSubResourceCacheTTL(
+  input: ComputeSubResourceCacheTTLInput
+): number | null {
+  const now = input.now ?? new Date();
+
+  // Rule 1a — closed > 30 days → no cache
+  if (input.closedFlag) {
+    if (!input.closedDate) return null;
+    const daysClosed = ageMs(input.closedDate, now) / DAY_MS;
+    if (daysClosed > 30) return null;
+    return SUB_TTL_LOW_ACTIVITY;
+  }
+
+  const dates = [input.lastUpdated, input.expectedCloseDate].filter(
+    (d): d is Date => d !== null
+  );
+
+  if (dates.length === 0) {
+    return SUB_TTL_LOW_ACTIVITY;
+  }
+
+  const minDeltaDays =
+    Math.min(...dates.map((d) => ageMs(d, now))) / DAY_MS;
+
+  if (minDeltaDays <= 5) return SUB_TTL_HIGH_ACTIVITY;
+  if (minDeltaDays <= 14) return SUB_TTL_MODERATE_ACTIVITY;
+  return SUB_TTL_LOW_ACTIVITY;
+}