// GRU Temporal Stress Service
// Timeline-variant stress testing (t-Δ, t+Δ, tΩ)

import prisma from '@/shared/database/prisma';
import { Decimal } from '@prisma/client/runtime/library';
import { v4 as uuidv4 } from 'uuid';
import { logger } from '@/infrastructure/monitoring/logger';
import { gruStressAlgorithmsService } from './gru-stress-algorithms.service';


export interface RetrocausalStressRequest {
  eventType?: string;
  probability?: string;
  impact?: string;
  parameters?: Record<string, unknown>;
}

export interface PredictiveStressRequest {
  variable?: string;
  projectionVolatility?: string;
  gruSensitivity?: string;
  parameters?: Record<string, unknown>;
}

export interface TemporalStressMatrix {
  eventType?: string;
  probability?: string;
  impact?: string;
  omegaLayerCorrection?: string;
  deviationPercent?: Decimal;
}

export class GruTemporalStressService {
  /**
   * Run retrocausal stress test (t-Δ)
   * Tests retrocausal disturbances
   */
  async runRetrocausalStressTest(
    parameters: RetrocausalStressRequest
  ): Promise<TemporalStressMatrix> {
    logger.info('GRU Temporal Stress: Running retrocausal stress test', {
      parameters,
    });

    const eventType = parameters.eventType || 'retro_fx_shock';
    const probability = parameters.probability || 'Medium';
    const impact = parameters.impact || 'High';

    // Determine Ω-Layer correction based on event type and impact
    let omegaLayerCorrection = 'Minimal correction';
    if (eventType === 'retro_fx_shock' && impact === 'High') {
      omegaLayerCorrection = 'Strong merge required';
    } else if (eventType === 'sovereign_retro_default' && impact === 'Extreme') {
      omegaLayerCorrection = 'Full truth merge';
    }

    // Calculate deviation (simulated based on impact)
    let deviationPercent = new Decimal(0);
    if (impact === 'High') {
      deviationPercent = new Decimal(15);
    } else if (impact === 'Extreme') {
      deviationPercent = new Decimal(30);
    } else if (impact === 'Medium') {
      deviationPercent = new Decimal(8);
    } else {
      deviationPercent = new Decimal(3);
    }

    // Create temporal stress matrix record
    const matrixId = `TEMP-MATRIX-${uuidv4()}`;
    await prisma.gruTemporalStressMatrix.create({
      data: {
        matrixId,
        matrixType: 'retrocausal',
        timelineVariant: 't_minus_delta',
        eventType,
        probability,
        impact,
        omegaLayerCorrection,
        deviationPercent,
        matrixData: {
          eventType,
          probability,
          impact,
          omegaLayerCorrection,
          deviationPercent: deviationPercent.toString(),
        },
        generatedAt: new Date(),
      },
    });

    logger.info('GRU Temporal Stress: Retrocausal stress test completed', {
      matrixId,
      eventType,
      impact,
    });

    return {
      eventType,
      probability,
      impact,
      omegaLayerCorrection,
      deviationPercent,
    };
  }

  /**
   * Run predictive stress test (t+Δ)
   * Tests predictive stress scenarios
   */
  async runPredictiveStressTest(
    parameters: PredictiveStressRequest
  ): Promise<TemporalStressMatrix> {
    logger.info('GRU Temporal Stress: Running predictive stress test', {
      parameters,
    });

    const variable = parameters.variable || 'XAU';
    const projectionVolatility = parameters.projectionVolatility || 'High';
    const gruSensitivity = parameters.gruSensitivity || 'Very High';

    // Calculate deviation based on volatility and sensitivity
    let deviationPercent = new Decimal(0);
    if (projectionVolatility === 'Very High' && gruSensitivity === 'Very High') {
      deviationPercent = new Decimal(25);
    } else if (projectionVolatility === 'High' && gruSensitivity === 'Very High') {
      deviationPercent = new Decimal(18);
    } else if (projectionVolatility === 'Medium' && gruSensitivity === 'Medium') {
      deviationPercent = new Decimal(10);
    } else {
      deviationPercent = new Decimal(5);
    }

    // Create temporal stress matrix record
    const matrixId = `TEMP-MATRIX-${uuidv4()}`;
    await prisma.gruTemporalStressMatrix.create({
      data: {
        matrixId,
        matrixType: 'predictive',
        timelineVariant: 't_plus_delta',
        eventType: variable,
        probability: projectionVolatility,
        impact: gruSensitivity,
        deviationPercent,
        matrixData: {
          variable,
          projectionVolatility,
          gruSensitivity,
          deviationPercent: deviationPercent.toString(),
        },
        generatedAt: new Date(),
      },
    });

    logger.info('GRU Temporal Stress: Predictive stress test completed', {
      matrixId,
      variable,
      projectionVolatility,
    });

    return {
      eventType: variable,
      probability: projectionVolatility,
      impact: gruSensitivity,
      deviationPercent,
    };
  }

  /**
   * Run Ω-Layer stability test
   * Generates Ω-Layer stability matrix
   */
  async runOmegaLayerStabilityTest(): Promise<any> {
    logger.info('GRU Temporal Stress: Running Ω-Layer stability test');

    // Generate stability matrix for all layers
    const layers = ['classical', 'quantum', 'parallel', 'holograph'];
    const matrix: any[] = [];

    for (const layer of layers) {
      // Simulate pre-stress and post-stress deviations
      const preStressDeviation = this.getPreStressDeviation(layer);
      const postStressDeviation = this.getPostStressDeviation(layer);
      const status = this.getCorrectionStatus(layer, postStressDeviation);

      matrix.push({
        layer,
        preStressDeviation: preStressDeviation.toString(),
        postStressDeviation: postStressDeviation.toString(),
        status,
      });

      // Create temporal stress matrix record
      const matrixId = `TEMP-MATRIX-${uuidv4()}`;
      await prisma.gruTemporalStressMatrix.create({
        data: {
          matrixId,
          matrixType: 'omega_layer',
          timelineVariant: 't_omega',
          eventType: layer,
          deviationPercent: postStressDeviation,
          matrixData: {
            layer,
            preStressDeviation: preStressDeviation.toString(),
            postStressDeviation: postStressDeviation.toString(),
            status,
          },
          generatedAt: new Date(),
        },
      });
    }

    logger.info('GRU Temporal Stress: Ω-Layer stability test completed', {
      layers: layers.length,
    });

    return {
      matrixType: 'omega_layer',
      matrixName: 'Ω-Layer Stability Matrix',
      data: matrix,
    };
  }

  /**
   * Generate temporal stress matrices
   */
  async generateTemporalStressMatrix(
    matrixType: 'retrocausal' | 'predictive' | 'omega_layer'
  ): Promise<any> {
    logger.info('GRU Temporal Stress: Generating temporal stress matrix', {
      matrixType,
    });

    switch (matrixType) {
      case 'retrocausal':
        return await this.runRetrocausalStressTest({});
      case 'predictive':
        return await this.runPredictiveStressTest({});
      case 'omega_layer':
        return await this.runOmegaLayerStabilityTest();
      default:
        throw new Error(`Unknown matrix type: ${matrixType}`);
    }
  }

  /**
   * Get temporal stress matrix by ID
   */
  async getTemporalStressMatrix(matrixId: string) {
    return await prisma.gruTemporalStressMatrix.findUnique({
      where: { matrixId },
    });
  }

  /**
   * Get temporal stress matrices by type
   */
  async getTemporalStressMatrices(matrixType?: string) {
    const where: any = { status: 'active' };
    if (matrixType) {
      where.matrixType = matrixType;
    }

    return await prisma.gruTemporalStressMatrix.findMany({
      where,
      orderBy: { generatedAt: 'desc' },
    });
  }

  /**
   * Get pre-stress deviation for layer
   */
  private getPreStressDeviation(layer: string): Decimal {
    const deviations: Record<string, Decimal> = {
      classical: new Decimal(12),
      quantum: new Decimal(22),
      parallel: new Decimal(31),
      holograph: new Decimal(45),
    };
    return deviations[layer] || new Decimal(0);
  }

  /**
   * Get post-stress deviation for layer
   */
  private getPostStressDeviation(layer: string): Decimal {
    const deviations: Record<string, Decimal> = {
      classical: new Decimal(1.2),
      quantum: new Decimal(0.0),
      parallel: new Decimal(3.1),
      holograph: new Decimal(4.5),
    };
    return deviations[layer] || new Decimal(0);
  }

  /**
   * Get correction status for layer
   */
  private getCorrectionStatus(
    layer: string,
    postStressDeviation: Decimal
  ): string {
    if (postStressDeviation.isZero()) {
      return 'Fully merged';
    } else if (postStressDeviation.lessThan(2)) {
      return 'Corrected';
    } else if (postStressDeviation.lessThan(5)) {
      return 'Harmonized';
    } else {
      return 'Stabilized';
    }
  }
}

export const gruTemporalStressService = new GruTemporalStressService();
