feat: implement comprehensive notification engine with policies, preferences, and automated dispatching services

notification-sender/src/Models/Jobs/WhatsAppThrottle.ts

@@ -0,0 +1,28 @@
+const DEFAULT_MIN_INTERVAL_MS = 8000;
+const JITTER_MAX_MS = 8000;
+
+export class WhatsAppThrottleClass {
+    private lastSentAt: Map<string, number> = new Map();
+    private minIntervalMs: number;
+
+    constructor(minIntervalMs: number = DEFAULT_MIN_INTERVAL_MS) {
+        this.minIntervalMs = minIntervalMs;
+    }
+
+    canSend(companyId: string): boolean {
+        const lastSent = this.lastSentAt.get(companyId);
+        if (!lastSent) {
+            return true;
+        }
+
+        const elapsed = Date.now() - lastSent;
+        const jitter = Math.floor(Math.random() * JITTER_MAX_MS);
+        const requiredInterval = this.minIntervalMs + jitter;
+
+        return elapsed >= requiredInterval;
+    }
+
+    recordSent(companyId: string): void {
+        this.lastSentAt.set(companyId, Date.now());
+    }
+}