// DBIS Temporal-Multiversal FX Parity Law - Correction Service
// Triggers temporal FX correction when parity diverges

import prisma from '@/shared/database/prisma';
import { v4 as uuidv4 } from 'uuid';
import { Decimal } from '@prisma/client/runtime/library';
import { tmfplParityService } from './tmfpl-parity.service';


export interface CorrectionResult {
  correctionId: string;
  parityId: string;
  correctionAmount: Decimal;
  correctedParity: Decimal;
  correctionApplied: boolean;
}

export class TmfplCorrectionService {
  /**
   * Trigger temporal FX correction
   * If parity diverges, apply correction to restore equilibrium
   */
  async triggerTemporalFxCorrection(parityId: string): Promise<CorrectionResult> {
    const correctionId = `TMFPL-CORR-${uuidv4()}`;

    const parity = await prisma.temporal_fx_parity.findUnique({
      where: { parityId },
    });

    if (!parity) {
      throw new Error(`Parity calculation not found: ${parityId}`);
    }

    // Calculate correction amount (opposite of divergence)
    const correctionAmount = parity.divergence.negated();
    const correctedParity = parity.calculatedParity.plus(correctionAmount);

    // Create correction record
    const correction = await prisma.temporal_corrections.create({
      data: {
        id: uuidv4(),
        correctionId,
        parityId,
        correctionAmount,
        correctedParity,
        currencyPair: parity.currencyPair,
        status: 'applied',
        createdAt: new Date(),
        updatedAt: new Date(),
      },
    });

    // Update parity status
    await prisma.temporal_fx_parity.update({
      where: { parityId },
      data: {
        requiresCorrection: false,
        status: 'corrected',
        updatedAt: new Date(),
      },
    });

    return {
      correctionId,
      parityId,
      correctionAmount,
      correctedParity,
      correctionApplied: true,
    };
  }

  /**
   * Get correction by ID
   */
  async getCorrection(correctionId: string) {
    return await prisma.temporal_corrections.findUnique({
      where: { correctionId },
      include: {
        temporal_fx_parity: true,
      },
    });
  }

  /**
   * Get all corrections for parity
   */
  async getCorrectionsForParity(parityId: string) {
    return await prisma.temporal_corrections.findMany({
      where: { parityId },
      orderBy: { createdAt: 'desc' },
    });
  }

  /**
   * Apply corrections to all parities requiring correction
   */
  async applyAllCorrections() {
    const parities = await tmfplParityService.getParitiesRequiringCorrection();

    const results: CorrectionResult[] = [];

    for (const parity of parities) {
      const result = await this.triggerTemporalFxCorrection(parity.parityId);
      results.push(result);
    }

    return results;
  }
}

export const tmfplCorrectionService = new TmfplCorrectionService();

