// SCI Zone Manager
// Sovereign Compute Zones (SCZs) per SCB, zero-trust isolation

import prisma from '@/shared/database/prisma';
import { v4 as uuidv4 } from 'uuid';
import { logger } from '@/infrastructure/monitoring/logger';


export interface SovereignComputeZoneRequest {
  sovereignBankId: string;
  zoneName: string;
  zoneType: 'primary' | 'replica' | 'backup';
  region: string;
}

export interface ZeroTrustConfig {
  isolationLevel: 'strict' | 'moderate' | 'relaxed';
  networkSegmentation: boolean;
  identityVerification: boolean;
  encryptionRequired: boolean;
}

export class SciZoneManagerService {
  /**
   * Create Sovereign Compute Zone
   */
  async createZone(request: SovereignComputeZoneRequest): Promise<{ zoneId: string }> {
    const zoneId = `SCZ-${uuidv4()}`;

    // Default zero-trust configuration
    const zeroTrustConfig: ZeroTrustConfig = {
      isolationLevel: 'strict',
      networkSegmentation: true,
      identityVerification: true,
      encryptionRequired: true,
    };

    // Create zone
    await prisma.sovereign_compute_zones.create({
      data: {
        zoneId,
        sovereignBankId: request.sovereignBankId,
        zoneName: request.zoneName,
        zoneType: request.zoneType,
        region: request.region,
        zeroTrustConfig: zeroTrustConfig as unknown as Record<string, unknown>,
        status: 'active',
      },
    });

    logger.info('SCI: Created Sovereign Compute Zone', {
      zoneId,
      sovereignBankId: request.sovereignBankId,
      zoneType: request.zoneType,
    });

    return { zoneId };
  }

  /**
   * Configure PQ-HSM for zone
   */
  async configurePqHsm(zoneId: string, hsmConfig: Record<string, unknown>): Promise<void> {
    await prisma.sovereign_compute_zones.update({
      where: { zoneId },
      data: {
        pqHsmConfig: hsmConfig,
      },
    });

    logger.info('SCI: Configured PQ-HSM for zone', { zoneId });
  }

  /**
   * Enforce zero-trust isolation
   */
  async enforceIsolation(zoneId: string): Promise<boolean> {
    const zone = await prisma.sovereign_compute_zones.findUnique({
      where: { zoneId },
    });

    if (!zone) {
      throw new Error('Zone not found');
    }

    const config = zone.zeroTrustConfig as unknown as ZeroTrustConfig;

    // Verify isolation requirements
    const checks = {
      networkSegmentation: config.networkSegmentation,
      identityVerification: config.identityVerification,
      encryptionRequired: config.encryptionRequired,
    };

    const allChecksPass = Object.values(checks).every((check) => check === true);

    if (!allChecksPass) {
      logger.warn('SCI: Zero-trust isolation checks failed', { zoneId, checks });
      return false;
    }

    logger.info('SCI: Zero-trust isolation verified', { zoneId });
    return true;
  }

  /**
   * Get zone by sovereign bank
   */
  async getZoneBySovereign(sovereignBankId: string): Promise<{ zoneId: string } | null> {
    const zone = await prisma.sovereign_compute_zones.findFirst({
      where: {
        sovereignBankId,
        status: 'active',
        zoneType: 'primary',
      },
    });

    return zone ? { zoneId: zone.zoneId } : null;
  }
}

export const sciZoneManagerService = new SciZoneManagerService();

