// DBIS Volume XIV: Sovereign Holographic Anchor System (SHAS)
// Ensures every sovereign and asset has a holographic anchor in the Prime Ledger

import prisma from '@/shared/database/prisma';
import { v4 as uuidv4 } from 'uuid';
import { createHash } from 'crypto';


export interface CreateHolographicAnchorRequest {
  anchorType: 'sovereign' | 'asset' | 'ledger_state';
  sovereignBankId?: string;
  sovereignId?: string;
  assetId?: string;
  sovereignIdentity?: Record<string, unknown>;
  ledgerState?: Record<string, unknown>;
  reflectionState?: Record<string, unknown>;
  multiverseAlignment?: Record<string, unknown>;
}

export class ShasService {
  /**
   * Create holographic anchor: H_anchor = ENCODE(...)
   */
  async createHolographicAnchor(
    request: CreateHolographicAnchorRequest
  ): Promise<{
    anchorId: string;
    encodedAnchor: string;
  }> {
    const anchorId = `ANCHOR-${uuidv4()}`;

    // Encode anchor: H_anchor = ENCODE(sovereign_identity, ledger_state, reflection_state, multiverse_alignment)
    const encodedAnchor = this.encodeAnchor({
      sovereignIdentity: request.sovereignIdentity || {},
      ledgerState: request.ledgerState || {},
      reflectionState: request.reflectionState || {},
      multiverseAlignment: request.multiverseAlignment || {},
    });

    // Create anchor record
    const anchor = await prisma.holographicAnchor.create({
      data: {
        anchorId,
        sovereignBankId: request.sovereignBankId,
        sovereignId: request.sovereignId,
        assetId: request.assetId,
        anchorType: request.anchorType,
        encodedAnchor,
        sovereignIdentity: request.sovereignIdentity
          ? (request.sovereignIdentity as unknown as object)
          : null,
        ledgerState: request.ledgerState
          ? (request.ledgerState as unknown as object)
          : null,
        reflectionState: request.reflectionState
          ? (request.reflectionState as unknown as object)
          : null,
        multiverseAlignment: request.multiverseAlignment
          ? (request.multiverseAlignment as unknown as object)
          : null,
        integrityStatus: 'pending',
      },
    });

    // Perform initial integrity check
    await this.performIntegrityCheck(anchor.anchorId);

    return {
      anchorId: anchor.anchorId,
      encodedAnchor: anchor.encodedAnchor,
    };
  }

  /**
   * Encode anchor: H_anchor = ENCODE(...)
   */
  private encodeAnchor(components: {
    sovereignIdentity: Record<string, unknown>;
    ledgerState: Record<string, unknown>;
    reflectionState: Record<string, unknown>;
    multiverseAlignment: Record<string, unknown>;
  }): string {
    // Create encoding string
    const encodingString =
      JSON.stringify(components.sovereignIdentity) +
      JSON.stringify(components.ledgerState) +
      JSON.stringify(components.reflectionState) +
      JSON.stringify(components.multiverseAlignment);

    // Create hash-based encoding
    const hash = createHash('sha3-256')
      .update(encodingString)
      .digest('hex');

    return `H-${hash}`;
  }

  /**
   * Perform holographic-identity check before settlement finality
   */
  async performIntegrityCheck(anchorId: string): Promise<{
    passed: boolean;
    checkDetails: Record<string, unknown>;
  }> {
    const anchor = await prisma.holographicAnchor.findUnique({
      where: { anchorId },
    });

    if (!anchor) {
      throw new Error(`Anchor ${anchorId} not found`);
    }

    // Perform identity verification
    const identityCheck = await this.verifyIdentity(anchor);
    const settlementCheck = await this.verifySettlementGrounding(anchor);
    const divergenceCheck = await this.checkDivergenceProtection(anchor);

    const allPassed =
      identityCheck.passed &&
      settlementCheck.passed &&
      divergenceCheck.passed;

    // Create integrity check records
    await prisma.anchorIntegrityCheck.createMany({
      data: [
        {
          checkId: `CHECK-${uuidv4()}`,
          anchorId: anchor.id,
          checkType: 'identity_verification',
          checkResult: identityCheck.passed ? 'passed' : 'failed',
          checkDetails: identityCheck.details as unknown as object,
          status: 'completed',
          checkedAt: new Date(),
        },
        {
          checkId: `CHECK-${uuidv4()}`,
          anchorId: anchor.id,
          checkType: 'settlement_grounding',
          checkResult: settlementCheck.passed ? 'passed' : 'failed',
          checkDetails: settlementCheck.details as unknown as object,
          status: 'completed',
          checkedAt: new Date(),
        },
        {
          checkId: `CHECK-${uuidv4()}`,
          anchorId: anchor.id,
          checkType: 'divergence_protection',
          checkResult: divergenceCheck.passed ? 'passed' : 'failed',
          checkDetails: divergenceCheck.details as unknown as object,
          status: 'completed',
          checkedAt: new Date(),
        },
      ],
    });

    // Update anchor integrity status
    await prisma.holographicAnchor.update({
      where: { anchorId },
      data: {
        integrityStatus: allPassed ? 'verified' : 'failed',
        verifiedAt: allPassed ? new Date() : null,
      },
    });

    return {
      passed: allPassed,
      checkDetails: {
        identityVerification: identityCheck,
        settlementGrounding: settlementCheck,
        divergenceProtection: divergenceCheck,
      },
    };
  }

  /**
   * Verify identity
   */
  private async verifyIdentity(anchor: {
    sovereignIdentity: object | null;
    encodedAnchor: string;
  }): Promise<{
    passed: boolean;
    details: Record<string, unknown>;
  }> {
    // Verify that encoded anchor matches current state
    if (!anchor.sovereignIdentity) {
      return {
        passed: false,
        details: {
          reason: 'Missing sovereign identity',
        },
      };
    }

    // Re-encode and verify
    const reencoded = this.encodeAnchor({
      sovereignIdentity: anchor.sovereignIdentity as Record<string, unknown>,
      ledgerState: {},
      reflectionState: {},
      multiverseAlignment: {},
    });

    const passed = reencoded === anchor.encodedAnchor;

    return {
      passed,
      details: {
        encodedAnchor: anchor.encodedAnchor,
        reencoded,
        match: passed,
      },
    };
  }

  /**
   * Verify settlement grounding
   */
  private async verifySettlementGrounding(anchor: {
    ledgerState: object | null;
    anchorType: string;
  }): Promise<{
    passed: boolean;
    details: Record<string, unknown>;
  }> {
    // Verify that anchor provides settlement grounding
    if (anchor.anchorType === 'sovereign' || anchor.anchorType === 'asset') {
      const hasLedgerState = anchor.ledgerState !== null;

      return {
        passed: hasLedgerState,
        details: {
          hasLedgerState,
          anchorType: anchor.anchorType,
        },
      };
    }

    return {
      passed: true,
      details: {
        anchorType: anchor.anchorType,
        note: 'Ledger state anchor - grounding verified',
      },
    };
  }

  /**
   * Check divergence protection
   */
  private async checkDivergenceProtection(anchor: {
    multiverseAlignment: object | null;
    reflectionState: object | null;
  }): Promise<{
    passed: boolean;
    details: Record<string, unknown>;
  }> {
    // Check that multiverse alignment exists to protect against divergence
    const hasMultiverseAlignment = anchor.multiverseAlignment !== null;
    const hasReflectionState = anchor.reflectionState !== null;

    const passed = hasMultiverseAlignment && hasReflectionState;

    return {
      passed,
      details: {
        hasMultiverseAlignment,
        hasReflectionState,
        protectionLevel: passed ? 'full' : 'partial',
      },
    };
  }

  /**
   * Create holographic settlement
   */
  async createHolographicSettlement(
    anchorId: string,
    settlementData: Record<string, unknown>,
    settlementType: 'standard' | 'cross_reality' | 'multiverse' = 'standard'
  ): Promise<{
    settlementId: string;
    holographicCheck: boolean;
  }> {
    const anchor = await prisma.holographicAnchor.findUnique({
      where: { anchorId },
    });

    if (!anchor) {
      throw new Error(`Anchor ${anchorId} not found`);
    }

    // Perform holographic-identity check
    const integrityCheck = await this.performIntegrityCheck(anchorId);
    const holographicCheck = integrityCheck.passed;

    if (!holographicCheck) {
      throw new Error(
        `Holographic-identity check failed for anchor ${anchorId}`
      );
    }

    // Create settlement
    const settlement = await prisma.holographicSettlement.create({
      data: {
        settlementId: `SETTLE-${uuidv4()}`,
        anchorId: anchor.id,
        settlementType,
        settlementData: settlementData as unknown as object,
        holographicCheck: true,
        finalityStatus: 'verified',
        finalizedAt: new Date(),
      },
    });

    return {
      settlementId: settlement.settlementId,
      holographicCheck: settlement.holographicCheck,
    };
  }

  /**
   * Get holographic anchor
   */
  async getHolographicAnchor(anchorId: string) {
    return prisma.holographicAnchor.findUnique({
      where: { anchorId },
      include: {
        integrityChecks: {
          orderBy: {
            checkedAt: 'desc',
          },
          take: 10,
        },
        settlements: {
          orderBy: {
            createdAt: 'desc',
          },
          take: 10,
        },
      },
    });
  }

  /**
   * Update anchor with new state
   */
  async updateAnchorState(
    anchorId: string,
    updates: {
      sovereignIdentity?: Record<string, unknown>;
      ledgerState?: Record<string, unknown>;
      reflectionState?: Record<string, unknown>;
      multiverseAlignment?: Record<string, unknown>;
    }
  ): Promise<{
    updated: boolean;
    newEncodedAnchor: string;
  }> {
    const anchor = await prisma.holographicAnchor.findUnique({
      where: { anchorId },
    });

    if (!anchor) {
      throw new Error(`Anchor ${anchorId} not found`);
    }

    // Merge updates
    const updatedSovereignIdentity =
      (updates.sovereignIdentity as unknown as object) ||
      anchor.sovereignIdentity;
    const updatedLedgerState =
      (updates.ledgerState as unknown as object) || anchor.ledgerState;
    const updatedReflectionState =
      (updates.reflectionState as unknown as object) ||
      anchor.reflectionState;
    const updatedMultiverseAlignment =
      (updates.multiverseAlignment as unknown as object) ||
      anchor.multiverseAlignment;

    // Re-encode anchor
    const newEncodedAnchor = this.encodeAnchor({
      sovereignIdentity:
        (updatedSovereignIdentity as Record<string, unknown>) || {},
      ledgerState: (updatedLedgerState as Record<string, unknown>) || {},
      reflectionState:
        (updatedReflectionState as Record<string, unknown>) || {},
      multiverseAlignment:
        (updatedMultiverseAlignment as Record<string, unknown>) || {},
    });

    // Update anchor
    await prisma.holographicAnchor.update({
      where: { anchorId },
      data: {
        encodedAnchor: newEncodedAnchor,
        sovereignIdentity: updatedSovereignIdentity,
        ledgerState: updatedLedgerState,
        reflectionState: updatedReflectionState,
        multiverseAlignment: updatedMultiverseAlignment,
        integrityStatus: 'pending', // Require re-verification
      },
    });

    // Re-verify integrity
    await this.performIntegrityCheck(anchorId);

    return {
      updated: true,
      newEncodedAnchor,
    };
  }
}

export const shasService = new ShasService();

