// DBIS Quantum-Temporal Arbitration Engine - Detection Service
// Contradiction detection (cross-chain, temporal, parallel, quantum)

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


export type ArbitrationType = 'cross_chain' | 'temporal' | 'parallel' | 'quantum';
export type ContradictionType = 'cross_chain_state' | 'temporal_inconsistency' | 'parallel_ledger_conflict' | 'quantum_deviation';

export interface CreateArbitrationRequest {
  arbitrationType: ArbitrationType;
  eventData?: Record<string, unknown>;
}

export interface DetectContradictionRequest {
  arbitrationId: string;
  contradictionType: ContradictionType;
  eventData: Record<string, unknown>;
}

export class QtaeDetectionService {
  /**
   * Create quantum-temporal arbitration
   */
  async createArbitration(request: CreateArbitrationRequest) {
    const arbitrationId = `QTAE-${uuidv4()}`;

    const arbitration = await prisma.quantumTemporalArbitration.create({
      data: {
        arbitrationId,
        arbitrationType: request.arbitrationType,
        status: 'pending',
      },
    });

    return arbitration;
  }

  /**
   * Detect contradiction
   */
  async detectContradiction(request: DetectContradictionRequest) {
    const arbitration = await prisma.quantumTemporalArbitration.findUnique({
      where: { arbitrationId: request.arbitrationId },
    });

    if (!arbitration) {
      throw new Error(`Arbitration not found: ${request.arbitrationId}`);
    }

    const eventId = `CE-${uuidv4()}`;

    // Detect contradiction based on type
    let detected = false;
    let severity: 'low' | 'medium' | 'high' | 'critical' = 'low';

    switch (request.contradictionType) {
      case 'cross_chain_state':
        detected = await this.checkCrossChainState(request.eventData);
        severity = detected ? 'high' : 'low';
        break;
      case 'temporal_inconsistency':
        detected = await this.checkTemporalInconsistency(request.eventData);
        severity = detected ? 'critical' : 'low';
        break;
      case 'parallel_ledger_conflict':
        detected = await this.checkParallelLedgerConflict(request.eventData);
        severity = detected ? 'high' : 'low';
        break;
      case 'quantum_deviation':
        detected = await this.checkQuantumDeviation(request.eventData);
        severity = detected ? 'medium' : 'low';
        break;
    }

    if (detected) {
      // Update arbitration status
      await prisma.quantumTemporalArbitration.update({
        where: { arbitrationId: request.arbitrationId },
        data: { status: 'analyzing' },
      });
    }

    const event = await prisma.contradictionEvent.create({
      data: {
        eventId,
        arbitrationId: request.arbitrationId,
        contradictionType: request.contradictionType,
        severity,
        eventData: request.eventData,
        resolved: false,
      },
    });

    return event;
  }

  /**
   * Check cross-chain state contradiction
   */
  private async checkCrossChainState(eventData?: Record<string, unknown>): Promise<boolean> {
    // In production, this would check for cross-chain state conflicts
    return false; // No contradiction detected
  }

  /**
   * Check temporal inconsistency
   */
  private async checkTemporalInconsistency(eventData?: Record<string, unknown>): Promise<boolean> {
    // In production, this would check for temporal inconsistencies
    return false; // No contradiction detected
  }

  /**
   * Check parallel ledger conflict
   */
  private async checkParallelLedgerConflict(eventData?: Record<string, unknown>): Promise<boolean> {
    // In production, this would check for parallel ledger conflicts
    return false; // No contradiction detected
  }

  /**
   * Check quantum deviation
   */
  private async checkQuantumDeviation(eventData?: Record<string, unknown>): Promise<boolean> {
    // In production, this would check for quantum state deviations
    return false; // No contradiction detected
  }

  /**
   * Get arbitration by ID
   */
  async getArbitration(arbitrationId: string) {
    return await prisma.quantumTemporalArbitration.findUnique({
      where: { arbitrationId },
      include: {
        contradictions: true,
        rollbacks: true,
        decisions: true,
      },
    });
  }

  /**
   * Get contradictions for arbitration
   */
  async getContradictions(arbitrationId: string) {
    return await prisma.contradictionEvent.findMany({
      where: { arbitrationId },
      orderBy: [
        { severity: 'desc' },
        { detectedAt: 'desc' },
      ],
    });
  }

  /**
   * Get unresolved contradictions
   */
  async getUnresolvedContradictions() {
    return await prisma.contradictionEvent.findMany({
      where: { resolved: false },
      orderBy: [
        { severity: 'desc' },
        { detectedAt: 'desc' },
      ],
    });
  }
}

export const qtaeDetectionService = new QtaeDetectionService();

