// DBIS Unified Holographic Economic Model - Projection Service
// Cross-reality economic projection

import { Prisma } from '@prisma/client';
import prisma from '@/shared/database/prisma';
import { v4 as uuidv4 } from 'uuid';
import { Decimal } from '@prisma/client/runtime/library';
import { uhemEncodingService } from './uhem-encoding.service';


export type ProjectionMethod = 'forward_projection' | 'reverse_projection' | 'cross_reality';

export interface CreateProjectionRequest {
  stateId: string;
  targetReality: string;
  projectionMethod: ProjectionMethod;
  projectionData: Record<string, unknown>;
}

export class UhemProjectionService {
  /**
   * Create economic projection
   */
  async createProjection(request: CreateProjectionRequest) {
    // Verify state exists
    const state = await uhemEncodingService.getState(request.stateId);
    if (!state) {
      throw new Error(`State not found: ${request.stateId}`);
    }

    const projectionId = `EP-${uuidv4()}`;

    const projection = await prisma.economic_projections.create({
      data: {
        id: uuidv4(),
        projectionId,
        stateId: request.stateId,
        targetReality: request.targetReality,
        projectionData: request.projectionData as Prisma.InputJsonValue,
        projectionMethod: request.projectionMethod,
        status: 'active',
        createdAt: new Date(),
        updatedAt: new Date(),
      },
    });

    return projection;
  }

  /**
   * Perform forward projection
   */
  async forwardProject(stateId: string, targetReality: string) {
    const state = await uhemEncodingService.getState(stateId);
    if (!state) {
      throw new Error(`State not found: ${stateId}`);
    }

    // In production, this would perform complex holographic projection
    const projectionData = {
      sourceState: state.stateId,
      targetReality,
      projectedFlows: state.cbdcFlow,
      projectedMatrix: state.fxMatrix,
      projectedPressure: state.ssuPressure,
      projectedStability: state.stabilityFields,
    };

    return await this.createProjection({
      stateId,
      targetReality,
      projectionMethod: 'forward_projection',
      projectionData,
    });
  }

  /**
   * Perform reverse projection into Prime Ledger
   */
  async reverseProject(stateId: string) {
    const state = await uhemEncodingService.getState(stateId);
    if (!state) {
      throw new Error(`State not found: ${stateId}`);
    }

    // Reverse projection into Prime Ledger
    const projectionData = {
      sourceState: state.stateId,
      targetReality: 'prime_ledger',
      reversedFlows: state.cbdcFlow,
      reversedMatrix: state.fxMatrix,
      reversedPressure: state.ssuPressure,
      reversedStability: state.stabilityFields,
    };

    return await this.createProjection({
      stateId,
      targetReality: 'prime_ledger',
      projectionMethod: 'reverse_projection',
      projectionData,
    });
  }

  /**
   * Get projection by ID
   */
  async getProjection(projectionId: string) {
    return await prisma.economic_projections.findUnique({
      where: { projectionId },
      include: {
        holographic_economic_states: true,
      },
    });
  }

  /**
   * Get projections for a state
   */
  async getProjectionsForState(stateId: string) {
    return await prisma.economic_projections.findMany({
      where: { stateId },
      orderBy: { projectedAt: 'desc' },
    });
  }

  /**
   * Validate projection accuracy
   */
  async validateProjection(projectionId: string, actualData: Record<string, unknown>) {
    const projection = await this.getProjection(projectionId);
    if (!projection) {
      throw new Error(`Projection not found: ${projectionId}`);
    }

    // In production, this would calculate accuracy by comparing projection with actual data
    const accuracy = new Decimal(0.95); // Placeholder

    await prisma.economic_projections.update({
      where: { projectionId },
      data: {
        accuracy,
        status: 'validated',
      },
    });

    return {
      projectionId,
      accuracy: accuracy.toNumber(),
      validated: true,
    };
  }
}

export const uhemProjectionService = new UhemProjectionService();

