Adaptive Compliance Guardian

// Decoupled Multi-Channel Notification Broker & Compliance Filter
// NDA-compliant architectural abstraction

interface AutodeskWebhookEvent {
  eventId: string;
  eventType: "dm.version.added" | "rf.review.created";
  payload: {
    projectHub: string;
    reviewId: string;
    folderUrn: string;
    documentId: string;
    initiatedBy: string;
  };
}

class HighAvailabilityNotificationBroker {
  private eventQueue: any; // Instantiated via BullMQ backed by high-throughput Redis

  constructor(bullQueueInstance: any) {
    this.eventQueue = bullQueueInstance;
  }

  /**
   * Ingestion Gateway. Receives webhooks from Autodesk Cloud servers.
   * Executes a fire-and-forget push to decouple processing from the webhook response window.
   */
  public async ingestAutodeskCloudWebhook(event: AutodeskWebhookEvent): Promise<void> {
    const idempotencyKey = crypto.createHash('sha256').update(event.eventId).digest('hex');
    
    // Enqueue event with deterministic priority queues and automated backoffs
    await this.eventQueue.add('ACC_EVENT_JOB', event, {
      jobId: idempotencyKey,
      priority: event.eventType === 'rf.review.created' ? 1 : 10, // Critical priority execution
      attempts: 5,
      backoff: { type: 'exponential', delay: 1000 },
      removeOnComplete: true
    });
  }

  /**
   * Worker Process Execution Engine.
   * Runs in an isolated thread pool to run structural auditing and fan-out notifications.
   */
  public async processQueueJob(jobData: AutodeskWebhookEvent) {
    const { payload, eventType } = jobData;

    // Step 1: Execute Proactive Compliance Audit Layer
    if (eventType === "rf.review.created") {
      const isFolderCompliant = await this.verifyFolderWorkflowPermissions(payload.folderUrn, payload.reviewId);
      
      if (!isFolderCompliant) {
        // Intercept workflow and dynamically rewrite event destination targeting Project Admins
        await this.dispatchFlaggedComplianceAlert(payload);
        return;
      }
    }

    // Step 2: Clean path execution - standard worker distribution loop across communication adapters
    await this.executeChannelFanout(jobData);
  }

  private async verifyFolderWorkflowPermissions(folderUrn: string, reviewId: string): Promise<boolean> {
    // Queries isolated enterprise role matrix (e.g., matching paths for hubs like DLF or 5DVDC)
    // Returns false if a drawing from an unapproved folder is routed to a master workflow
    const ruleset = await this.fetchStructuralRuleset(reviewId);
    return ruleset.approvedFolders.includes(folderUrn);
  }
}