// DBIS Multiverse-Consistent FX/SSU Stability Framework - SSU Service
// SSU inertia and stability

import { Prisma } from '@prisma/client';
import { Decimal } from '@prisma/client/runtime/library';
import prisma from '@/shared/database/prisma';
import { multiverseStabilityService } from './multiverse-stability.service';
import { v4 as uuidv4 } from 'uuid';


export class MultiverseSsuService {
  /**
   * Calculate SSU inertia for a reality layer
   */
  async calculateSsuInertia(realityLayer: string, ssuData: Record<string, unknown>) {
    // In production, this would calculate SSU inertia based on:
    // - SSU composition stability
    // - Cross-reality SSU rates
    // - Inertia metrics

    const ssuInertia = 0.8; // Placeholder

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

    let stabilityIndex = index;
    if (!stabilityIndex) {
      // Create new index with default values
      stabilityIndex = await multiverseStabilityService.calculateStability({
        realityLayer,
        fxStability: 0.85,
        ssuInertia,
        temporalSmoothing: 0.9,
        crossRealityDivergence: 0.1,
      });
    }

    // Record calculation
    await prisma.stability_calculations.create({
      data: {
        id: uuidv4(),
        calculationId: `CALC-${Date.now()}`,
        indexId: stabilityIndex.indexId,
        calculationType: 'ssu_inertia',
        inputData: ssuData as Prisma.InputJsonValue,
        calculationResult: new Decimal(ssuInertia),
        calculationFormula: {
          method: 'ssu_inertia_analysis',
          inputs: ssuData,
        } as Prisma.InputJsonValue,
        status: 'active',
        createdAt: new Date(),
        updatedAt: new Date(),
      },
    });

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

  /**
   * Get SSU inertia across all realities
   */
  async getSsuInertiaAcrossRealities() {
    const indices = await multiverseStabilityService.getAllStabilityIndices();

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

  /**
   * Update SSU inertia in stability index
   */
  async updateSsuInertia(indexId: string, newInertia: number) {
    const stabilityIndex = await multiverseStabilityService.getStabilityIndex(indexId);
    if (!stabilityIndex) {
      throw new Error(`Stability index not found: ${indexId}`);
    }

    // Recalculate total stability
    const newTotalStability = stabilityIndex.fxStability
      .plus(newInertia)
      .plus(stabilityIndex.temporalSmoothing)
      .minus(stabilityIndex.crossRealityDivergence);

    await prisma.multiverse_stability_indices.update({
      where: { indexId },
      data: {
        ssuInertia: newInertia,
        totalStability: newTotalStability,
      },
    });

    return await multiverseStabilityService.getStabilityIndex(indexId);
  }
}

export const multiverseSsuService = new MultiverseSsuService();

