// DCDC Forensic & Recovery Bureau (FRB)
// Chain-of-custody forensic analysis, ledger anomaly remediation, CBDC capsule recovery

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


export interface ForensicAnalysis {
  analysisId: string;
  incidentId: string;
  analysisType: string;
  findings: Record<string, unknown>;
  chainOfCustody: string[];
  remediationSteps: string[];
}

export class DcdcForensicsService {
  /**
   * Initialize or get FRB division
   */
  async initializeFRB() {
    const existing = await prisma.dcdc_divisions.findFirst({
      where: { divisionType: 'FRB' },
    });

    if (existing) {
      return existing;
    }

    return await prisma.dcdc_divisions.create({
      data: {
        divisionId: `FRB-${uuidv4()}`,
        divisionType: 'FRB',
        divisionName: 'Forensic & Recovery Bureau',
        description: 'Chain-of-custody forensic analysis, ledger anomaly remediation, CBDC capsule recovery',
        status: 'active',
      },
    });
  }

  /**
   * Perform forensic analysis
   */
  async performForensicAnalysis(
    incidentId: string,
    analysisType: string,
    findings: Record<string, unknown>,
    chainOfCustody: string[]
  ): Promise<ForensicAnalysis> {
    const frb = await this.initializeFRB();

    const analysisId = `FORENSIC-${uuidv4()}`;

    const analysis: ForensicAnalysis = {
      analysisId,
      incidentId,
      analysisType,
      findings,
      chainOfCustody,
      remediationSteps: [],
    };

    // Store analysis
    await prisma.defense_layer_actions.create({
      data: {
        actionId: analysisId,
        divisionId: frb.id,
        incidentId,
        layer: 'D', // Restoration layer
        actionType: 'forensic_analysis',
        description: `Forensic analysis: ${analysisType}`,
        actionStatus: 'executed',
        metadata: {
          analysis,
        },
        executedAt: new Date(),
      },
    });

    return analysis;
  }

  /**
   * Detect and record ledger anomaly
   */
  async detectLedgerAnomaly(
    ledgerId: string,
    anomalyType: string,
    severity: string,
    details: Record<string, unknown>
  ) {
    const sgse = await this.getOrCreateSGSE();

    return await prisma.ledger_anomalies.create({
      data: {
        anomalyId: `ANOMALY-${uuidv4()}`,
        sgseId: sgse.id,
        ledgerId,
        anomalyType,
        severity,
        status: 'detected',
        metadata: details,
        detectedAt: new Date(),
      },
    });
  }

  /**
   * Remediate ledger anomaly
   */
  async remediateLedgerAnomaly(
    anomalyId: string,
    remediationAction: string,
    remediationDetails: Record<string, unknown>
  ) {
    const anomaly = await prisma.ledger_anomalies.findUnique({
      where: { anomalyId },
    });

    if (!anomaly) {
      throw new Error(`Anomaly not found: ${anomalyId}`);
    }

    return await prisma.ledger_anomalies.update({
      where: { anomalyId },
      data: {
        status: 'remediated',
        remediationAction,
        remediatedAt: new Date(),
        metadata: {
          ...(anomaly.metadata as Record<string, unknown> || {}),
          remediationDetails,
        },
      },
    });
  }

  /**
   * Recover CBDC capsule
   */
  async recoverCbdcCapsule(capsuleId: string, recoveryDetails: Record<string, unknown>) {
    // This would integrate with CBDC capsule recovery
    const frb = await this.initializeFRB();

    return await prisma.defense_layer_actions.create({
      data: {
        actionId: `RECOVERY-${uuidv4()}`,
        divisionId: frb.id,
        layer: 'D', // Restoration layer
        actionType: 'capsule_recovery',
        description: `CBDC capsule recovery: ${capsuleId}`,
        actionStatus: 'executed',
        metadata: {
          capsuleId,
          recoveryDetails,
        },
        executedAt: new Date(),
      },
    });
  }

  /**
   * Get or create Sovereign Graph Security Engine
   */
  async getOrCreateSGSE() {
    const existing = await prisma.sovereign_graph_security_engines.findFirst({
      where: { graphType: 'threat_graph' },
    });

    if (existing) {
      return existing;
    }

    return await prisma.sovereign_graph_security_engines.create({
      data: {
        sgseId: `SGSE-${uuidv4()}`,
        graphType: 'threat_graph',
        graphData: {
          nodes: [],
          edges: [],
        },
        nodeCount: 0,
        edgeCount: 0,
        status: 'active',
      },
    });
  }

  /**
   * Get pending anomalies
   */
  async getPendingAnomalies() {
    return await prisma.ledger_anomalies.findMany({
      where: {
        status: {
          in: ['detected', 'under_investigation'],
        },
      },
      orderBy: {
        detectedAt: 'desc',
      },
    });
  }

  /**
   * Get forensic analyses
   */
  async getForensicAnalyses(incidentId?: string) {
    const where: any = {
      actionType: 'forensic_analysis',
    };

    if (incidentId) {
      where.incidentId = incidentId;
    }

    return await prisma.defense_layer_actions.findMany({
      where,
      orderBy: {
        executedAt: 'desc',
      },
    });
  }
}

export const dcdcForensicsService = new DcdcForensicsService();

