// DBIS Supra-Constitutional Temporal Integrity Service
// Temporal non-contradiction enforcement (Article 9)

import prisma from '@/shared/database/prisma';
import { v4 as uuidv4 } from 'uuid';
import { scdcCharterService } from './scdc-charter.service';


export interface TemporalIntegrityCheckRequest {
  transactionId?: string;
  checkType: 'causality' | 'non_contradiction' | 'timeline_integrity';
  transactionData?: Record<string, unknown>;
}

export class ScdcTemporalIntegrityService {
  /**
   * Perform temporal integrity check (Article 9)
   * All transactions must be evaluated for cross-temporal risk
   */
  async performIntegrityCheck(request: TemporalIntegrityCheckRequest) {
    const charter = await scdcCharterService.getActiveCharter();
    if (!charter) {
      throw new Error('No active charter found');
    }

    // Verify Article 9 exists
    const article9 = await scdcCharterService.getArticle(charter.charterId, 9);
    if (!article9 || article9.principleType !== 'temporal_integrity') {
      throw new Error('Article 9 (Temporal Economic Integrity) not found');
    }

    const checkId = `TIC-${uuidv4()}`;

    // Perform check based on type
    let checkResult = 'passed';
    let contradictionDetected = false;
    const checkDetails: Record<string, unknown> = {
      checkType: request.checkType,
      timestamp: new Date(),
    };

    switch (request.checkType) {
      case 'causality':
        contradictionDetected = await this.checkCausality(request.transactionData);
        break;
      case 'non_contradiction':
        contradictionDetected = await this.checkNonContradiction(request.transactionData);
        break;
      case 'timeline_integrity':
        contradictionDetected = await this.checkTimelineIntegrity(request.transactionData);
        break;
    }

    if (contradictionDetected) {
      checkResult = 'failed';
      checkDetails.contradiction = true;
      checkDetails.severity = 'high';
    }

    const integrityCheck = await prisma.temporalIntegrityCheck.create({
      data: {
        checkId,
        charterId: charter.charterId,
        transactionId: request.transactionId || null,
        checkType: request.checkType,
        checkResult,
        checkDetails,
        contradictionDetected,
        resolved: false,
      },
    });

    return integrityCheck;
  }

  /**
   * Check causality constraints
   */
  private async checkCausality(transactionData?: Record<string, unknown>): Promise<boolean> {
    // In production, this would check:
    // - No future events affecting past states
    // - Causal order preservation in Prime Ledger
    // - No closed timelike curves
    return false; // No contradiction detected
  }

  /**
   * Check for temporal contradictions
   */
  private async checkNonContradiction(transactionData?: Record<string, unknown>): Promise<boolean> {
    // In production, this would check:
    // - No conflicting states at same temporal coordinate
    // - No paradoxes in settlement history
    return false; // No contradiction detected
  }

  /**
   * Check timeline integrity
   */
  private async checkTimelineIntegrity(transactionData?: Record<string, unknown>): Promise<boolean> {
    // In production, this would check:
    // - Timeline consistency across all realities
    // - No branch conflicts
    return false; // No contradiction detected
  }

  /**
   * Resolve temporal integrity check
   */
  async resolveCheck(checkId: string, resolutionMethod: string) {
    await prisma.temporalIntegrityCheck.update({
      where: { checkId },
      data: {
        resolved: true,
        resolvedAt: new Date(),
      },
    });
  }

  /**
   * Get integrity checks for a transaction
   */
  async getChecksForTransaction(transactionId: string) {
    return await prisma.temporalIntegrityCheck.findMany({
      where: { transactionId },
      orderBy: { createdAt: 'desc' },
    });
  }

  /**
   * Get unresolved integrity checks
   */
  async getUnresolvedChecks() {
    return await prisma.temporalIntegrityCheck.findMany({
      where: {
        resolved: false,
        contradictionDetected: true,
      },
      orderBy: { createdAt: 'desc' },
    });
  }
}

export const scdcTemporalIntegrityService = new ScdcTemporalIntegrityService();

