// Holographic Rendering Service
// Real-time holographic rendering support for metaverse
// Supplement B: MetaverseDubai Integration Framework

import prisma from '@/shared/database/prisma';
import { logger } from '@/infrastructure/monitoring/logger';


export interface HolographicRenderingRequest {
  metaverseNodeId: string;
  computeNodeId: string;
  assetId: string;
  renderingType: 'avatar' | 'environment' | 'object';
  quality: 'low' | 'medium' | 'high' | 'ultra';
}

export interface HolographicRenderingResult {
  renderingId: string;
  status: string;
  estimatedLatency: number; // milliseconds
}

export class HolographicRenderingService {
  /**
   * Initiate holographic rendering
   * Real-time holographic rendering for VR/AR metaverse experiences
   */
  async initiateRendering(
    request: HolographicRenderingRequest
  ): Promise<HolographicRenderingResult> {
    logger.info('Holographic Rendering: Initiating rendering', { request });

    // Get compute node
    const computeNode = await prisma.metaverse_compute_nodes.findUnique({
      where: { nodeId: request.computeNodeId },
    });

    if (!computeNode) {
      throw new Error(`Compute node not found: ${request.computeNodeId}`);
    }

    // Verify holographic rendering is enabled
    if (!computeNode.holographicRenderingEnabled) {
      throw new Error(
        'Holographic rendering not enabled on this compute node'
      );
    }

    // Get asset
    const asset = await prisma.metaverse_assets.findUnique({
      where: { assetId: request.assetId },
    });

    if (!asset) {
      throw new Error(`Asset not found: ${request.assetId}`);
    }

    // Calculate estimated latency based on quality and GPU capacity
    const estimatedLatency = this.calculateEstimatedLatency(
      request.quality,
      computeNode.gpuCapacity,
      computeNode.latency
    );

    const renderingId = `RENDER-${Date.now()}`;

    logger.info('Holographic Rendering: Rendering initiated', {
      renderingId,
      estimatedLatency,
    });

    return {
      renderingId,
      status: 'rendering',
      estimatedLatency,
    };
  }

  /**
   * Calculate estimated latency for holographic rendering
   */
  private calculateEstimatedLatency(
    quality: string,
    gpuCapacity: number,
    baseLatency: number
  ): number {
    // Quality multipliers
    const qualityMultipliers: Record<string, number> = {
      low: 1.0,
      medium: 1.5,
      high: 2.0,
      ultra: 3.0,
    };

    const qualityMultiplier = qualityMultipliers[quality] || 1.0;

    // GPU capacity factor (more GPU = lower latency)
    const gpuFactor = Math.max(1.0, 100 / gpuCapacity);

    // Estimated latency = base latency * quality multiplier * GPU factor
    return baseLatency * qualityMultiplier * gpuFactor;
  }
}

export const holographicRenderingService = new HolographicRenderingService();

