// GPU Edge Deployment Service
// 325-region deployment orchestration

import prisma from '@/shared/database/prisma';
import { v4 as uuidv4 } from 'uuid';
import { logger } from '@/infrastructure/monitoring/logger';
import { gpuEdgeNodeService } from './gpu-edge-node.service';


export interface GpuEdgeDeploymentRequest {
  regionId: string;
  nodeTypes: Array<'MGN' | 'QGN' | 'ZKN' | 'SAN'>;
  gpuCapacityPerNode: number;
  quantumSafeTunnelingEnabled: boolean;
}

export interface GpuEdgeDeploymentResult {
  deploymentId: string;
  regionId: string;
  nodesCreated: number;
  status: string;
}

export class GpuEdgeDeploymentService {
  /**
   * Deploy GPU edge nodes to a region
   * Supports deployment across 325 regions globally
   */
  async deployToRegion(
    request: GpuEdgeDeploymentRequest
  ): Promise<GpuEdgeDeploymentResult> {
    logger.info('GPU Edge: Deploying to region', { request });

    const deploymentId = `GPU-DEPLOY-${uuidv4()}`;

    // Step 1: Verify or create region
    let region = await prisma.gpu_edge_regions.findUnique({
      where: { regionId: request.regionId },
    });

    if (!region) {
      region = await prisma.gpu_edge_regions.create({
        data: {
          regionId: request.regionId,
          regionName: `Region ${request.regionId}`,
          status: 'active',
        },
      });
    }

    // Step 2: Create nodes for each node type
    const nodesCreated: string[] = [];

    for (const nodeType of request.nodeTypes) {
      const nodeResult = await gpuEdgeNodeService.createGpuEdgeNode({
        nodeType,
        regionId: request.regionId,
        nodeName: `${nodeType}-${request.regionId}-${uuidv4().substring(0, 8)}`,
        gpuCapacity: request.gpuCapacityPerNode,
        networkAddress: `6g://${request.regionId}/${nodeType}`,
        quantumSafeTunnelingEnabled: request.quantumSafeTunnelingEnabled,
      });

      nodesCreated.push(nodeResult.nodeId);
    }

    // Step 3: Create deployment record
    const deployment = await prisma.gpu_edge_deployments.create({
      data: {
        deploymentId,
        regionId: request.regionId,
        nodeTypes: request.nodeTypes as any,
        nodesCreated: nodesCreated as any,
        status: 'completed',
        deployedAt: new Date(),
      },
    });

    logger.info('GPU Edge: Deployment completed', {
      deploymentId,
      nodesCreated: nodesCreated.length,
    });

    return {
      deploymentId,
      regionId: request.regionId,
      nodesCreated: nodesCreated.length,
      status: deployment.status,
    };
  }

  /**
   * Get deployment by ID
   */
  async getDeployment(deploymentId: string) {
    return await prisma.gpu_edge_deployments.findUnique({
      where: { deploymentId },
      include: {
        region: true,
      },
    });
  }

  /**
   * Get deployments for region
   */
  async getDeploymentsForRegion(regionId: string) {
    return await prisma.gpu_edge_deployments.findMany({
      where: { regionId },
      orderBy: { deployedAt: 'desc' },
    });
  }

  /**
   * Get all active regions
   */
  async getAllActiveRegions() {
    return await prisma.gpu_edge_regions.findMany({
      where: { status: 'active' },
      orderBy: { regionName: 'asc' },
    });
  }
}

export const gpuEdgeDeploymentService = new GpuEdgeDeploymentService();

