// DBIS Multiverse-Consistent FX/SSU Stability Framework - FX Service
// FX stability across realities

import { Decimal } from '@prisma/client/runtime/library';
import prisma from '@/shared/database/prisma';
import { multiverseStabilityService } from './multiverse-stability.service';


export class MultiverseFxService {
  /**
   * Calculate FX stability for a reality layer
   */
  async calculateFxStability(realityLayer: string, fxData: Record<string, unknown>) {
    // In production, this would calculate FX stability based on:
    // - Currency pair volatilities
    // - Cross-reality FX rates
    // - Stability metrics

    const fxStability = 0.85; // Placeholder

    // Get or create stability index
    let index = await multiverseStabilityService.getLatestStabilityIndex(realityLayer);

    if (!index) {
      // Create new index with default values
      index = await multiverseStabilityService.calculateStability({
        realityLayer,
        fxStability,
        ssuInertia: 0.8,
        temporalSmoothing: 0.9,
        crossRealityDivergence: 0.1,
      });
    }

    // Record calculation
    await prisma.stabilityCalculation.create({
      data: {
        calculationId: `CALC-${Date.now()}`,
        indexId: index.indexId,
        calculationType: 'fx_stability',
        inputData: fxData,
        calculationResult: new Decimal(fxStability),
        calculationFormula: {
          method: 'fx_volatility_analysis',
          inputs: fxData,
        },
        status: 'active',
      },
    });

    return {
      realityLayer,
      fxStability,
      indexId: index.indexId,
    };
  }

  /**
   * Get FX stability across all realities
   */
  async getFxStabilityAcrossRealities() {
    const indices = await multiverseStabilityService.getAllStabilityIndices();

    return indices.map((index) => ({
      realityLayer: index.realityLayer,
      fxStability: index.fxStability.toNumber(),
      totalStability: index.totalStability.toNumber(),
      calculatedAt: index.calculatedAt,
    }));
  }

  /**
   * Compare FX stability between realities
   */
  async compareFxStability(sourceReality: string, targetReality: string) {
    const sourceIndex = await multiverseStabilityService.getLatestStabilityIndex(sourceReality);
    const targetIndex = await multiverseStabilityService.getLatestStabilityIndex(targetReality);

    if (!sourceIndex || !targetIndex) {
      throw new Error('Stability indices not found for one or both realities');
    }

    const difference = sourceIndex.fxStability.minus(targetIndex.fxStability);

    return {
      sourceReality,
      targetReality,
      sourceFxStability: sourceIndex.fxStability.toNumber(),
      targetFxStability: targetIndex.fxStability.toNumber(),
      difference: difference.toNumber(),
      relativeDifference: difference.div(sourceIndex.fxStability).toNumber(),
    };
  }
}

export const multiverseFxService = new MultiverseFxService();

