// 6G Fabric Service
// 6G ultra-low latency (<1ms) support for metaverse operations
// Supplement B: MetaverseDubai Integration Framework

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


export interface SixGFabricRequest {
  metaverseNodeId: string;
  computeNodeId: string;
  operationType: 'rendering' | 'transaction' | 'verification';
  latencyRequirement: number; // milliseconds, must be < 1ms for 6G
}

export interface SixGFabricResult {
  connected: boolean;
  latency: number;
  sixGEnabled: boolean;
}

export class SixGFabricService {
  /**
   * Connect to 6G fabric for ultra-low latency operations
   * 6G provides <1ms latency for metaverse rendering and transactions
   */
  async connectToSixGFabric(
    request: SixGFabricRequest
  ): Promise<SixGFabricResult> {
    logger.info('6G Fabric: Connecting to 6G fabric', { request });

    // Verify latency requirement is met
    if (request.latencyRequirement >= 1) {
      throw new Error('6G fabric requires latency < 1ms');
    }

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

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

    // Verify 6G is enabled
    if (!computeNode.sixGEnabled) {
      throw new Error('6G not enabled on this compute node');
    }

    // Verify latency meets requirement
    if (computeNode.latency >= request.latencyRequirement) {
      throw new Error(
        `Compute node latency (${computeNode.latency}ms) does not meet requirement (${request.latencyRequirement}ms)`
      );
    }

    logger.info('6G Fabric: Connected to 6G fabric', {
      computeNodeId: request.computeNodeId,
      latency: computeNode.latency,
    });

    return {
      connected: true,
      latency: computeNode.latency,
      sixGEnabled: computeNode.sixGEnabled,
    };
  }

  /**
   * Check 6G fabric availability
   */
  async checkSixGFabricAvailability(regionId: string): Promise<boolean> {
    const computeNodes = await prisma.metaverseComputeNode.findMany({
      where: {
        regionId,
        sixGEnabled: true,
        status: 'active',
        latency: { lt: 1 }, // < 1ms
      },
    });

    return computeNodes.length > 0;
  }
}

export const sixGFabricService = new SixGFabricService();

