// GRU Daily Operations Service
// GRU Banking Operations Manual - Daily Operations (Opening, Transactions, EOD Closeout)

import prisma from '@/shared/database/prisma';
import { Decimal } from '@prisma/client/runtime/library';
import { v4 as uuidv4 } from 'uuid';
import { gruAccountService } from './gru-account.service';


export type TransactionType =
  | 'spot_conversion'
  | 'fx_ssu_routing'
  | 'bond_purchase'
  | 'bond_redemption'
  | 'reserve_adjustment'
  | 'metaverse_on_ramp'
  | 'metaverse_off_ramp'
  | 'temporal_settlement';

export interface InitializeDailyOperationsRequest {
  operationDate?: Date;
}

export interface ProcessTransactionRequest {
  accountId: string;
  transactionType: TransactionType;
  amount: string;
  currencyCode?: string;
  referenceId?: string;
  metadata?: Record<string, unknown>;
}

export interface EndOfDayCloseoutRequest {
  operationId: string;
}

export interface DailyOperationsResult {
  operationId: string;
  operationDate: Date;
  status: string;
  ledgerNodesInitialized: boolean;
  indexEngineSynced: boolean;
  qekVerified: boolean;
  omegaDiagnosticRun: boolean;
}

export class GruDailyOperationsService {
  /**
   * Initialize daily operations (opening procedures)
   */
  async initializeDailyOperations(
    request?: InitializeDailyOperationsRequest
  ): Promise<DailyOperationsResult> {
    const operationDate = request?.operationDate || new Date();
    const operationId = `GRU-OPS-${uuidv4()}`;

    // Create daily operations record
    const operation = await prisma.gru_daily_operations.create({
      data: {
        id: uuidv4(),
        operationId,
        operationDate,
        operationType: 'opening',
        status: 'in_progress',
        createdAt: new Date(),
        updatedAt: new Date(),
      },
    });

    try {
      // 1. Initialize GRU ledger nodes
      await this.initializeLedgerNodes(operationId);

      // 2. Synchronize index engine (LiXAU, etc.)
      await this.synchronizeIndexEngine(operationId);

      // 3. Verify quantum envelope keys (QEKs)
      await this.verifyQuantumEnvelopeKeys(operationId);

      // 4. Run Ω-Layer diagnostic
      await this.runOmegaLayerDiagnostic(operationId);

      // Update operation status
      await prisma.gru_daily_operations.update({
        where: { operationId },
        data: {
          ledgerNodesInitialized: true,
          indexEngineSynced: true,
          qekVerified: true,
          omegaDiagnosticRun: true,
          status: 'completed',
          completedAt: new Date(),
        },
      });

      return {
        operationId,
        operationDate: operation.operationDate,
        status: 'completed',
        ledgerNodesInitialized: true,
        indexEngineSynced: true,
        qekVerified: true,
        omegaDiagnosticRun: true,
      };
    } catch (error: any) {
      // Mark operation as failed
      await prisma.gru_daily_operations.update({
        where: { operationId },
        data: {
          status: 'failed',
        },
      });

      throw new Error(`Daily operations initialization failed: ${error.message}`);
    }
  }

  /**
   * Initialize GRU ledger nodes
   */
  private async initializeLedgerNodes(operationId: string): Promise<void> {
    const nodeTypes = ['master', 'sovereign', 'regional'];

    for (const nodeType of nodeTypes) {
      await prisma.gru_ledger_nodes.create({
        data: {
          id: uuidv4(),
          nodeId: `GRU-NODE-${nodeType.toUpperCase()}-${uuidv4()}`,
          operationId,
          nodeType,
          nodeStatus: 'initializing',
          syncStatus: 'pending',
          createdAt: new Date(),
          updatedAt: new Date(),
        },
      });

      // Simulate node initialization
      // In production, this would actually initialize the ledger nodes
      await prisma.gru_ledger_nodes.updateMany({
        where: { operationId, nodeType },
        data: {
          nodeStatus: 'synchronized',
          syncStatus: 'completed',
          lastSyncAt: new Date(),
        },
      });
    }
  }

  /**
   * Synchronize index engine (LiXAU, LiPMG, LiBMG1-3)
   */
  private async synchronizeIndexEngine(operationId: string): Promise<void> {
    const indexCodes = ['LiXAU', 'LiPMG', 'LiBMG1', 'LiBMG2', 'LiBMG3'];

    for (const indexCode of indexCodes) {
      // Get current index value
      const index = await prisma.gru_indexes.findUnique({
        where: { indexCode },
      });

      if (index) {
        await prisma.gru_index_syncs.create({
          data: {
            id: uuidv4(),
            syncId: `GRU-SYNC-${indexCode}-${uuidv4()}`,
            operationId,
            indexCode,
            syncStatus: 'syncing',
            lastSyncedValue: index.currentValue,
            createdAt: new Date(),
            updatedAt: new Date(),
          },
        });

        // Update sync status
        await prisma.gru_index_syncs.updateMany({
          where: { operationId, indexCode },
          data: {
            syncStatus: 'completed',
            syncTimestamp: new Date(),
          },
        });
      }
    }
  }

  /**
   * Verify quantum envelope keys (QEKs)
   */
  private async verifyQuantumEnvelopeKeys(operationId: string): Promise<void> {
    // In production, this would retrieve and verify actual QEKs
    // For now, we'll create verification records
    const keyIds = ['QEK-MASTER-001', 'QEK-SOVEREIGN-001', 'QEK-REGIONAL-001'];

    for (const keyId of keyIds) {
      await prisma.gru_quantum_envelope_keys.create({
        data: {
          id: uuidv4(),
          qekId: `GRU-QEK-${uuidv4()}`,
          operationId,
          keyId,
          verificationStatus: 'pending',
          createdAt: new Date(),
          updatedAt: new Date(),
        },
      });

      // Simulate verification
      // In production, this would actually verify the quantum envelope keys
      await prisma.gru_quantum_envelope_keys.updateMany({
        where: { operationId, keyId },
        data: {
          verificationStatus: 'verified',
          verificationTimestamp: new Date(),
        },
      });
    }
  }

  /**
   * Run Ω-Layer diagnostic
   */
  private async runOmegaLayerDiagnostic(operationId: string): Promise<void> {
    const layers = ['Ω0', 'Ω1', 'Ω2', 'Ω3', 'Ω4'];

    for (const layerId of layers) {
      await prisma.gru_omega_diagnostics.create({
        data: {
          id: uuidv4(),
          diagnosticId: `GRU-OMEGA-${layerId}-${uuidv4()}`,
          operationId,
          layerId,
          diagnosticStatus: 'running',
          createdAt: new Date(),
          updatedAt: new Date(),
        },
      });

      // Simulate diagnostic run
      // In production, this would actually run Ω-Layer diagnostics
      await prisma.gru_omega_diagnostics.updateMany({
        where: { operationId, layerId },
        data: {
          diagnosticStatus: 'completed',
          diagnosticResult: {
            layer: layerId,
            status: 'healthy',
            timestamp: new Date().toISOString(),
          },
          runTimestamp: new Date(),
        },
      });
    }
  }

  /**
   * Process transaction
   */
  async processTransaction(
    request: ProcessTransactionRequest
  ): Promise<string> {
    // Validate account exists
    const account = await prisma.gru_accounts.findUnique({
      where: { accountId: request.accountId },
    });

    if (!account) {
      throw new Error(`Account not found: ${request.accountId}`);
    }

    if (account.status !== 'active') {
      throw new Error(`Account is not active: ${request.accountId}`);
    }

    const amount = new Decimal(request.amount);
    const currencyCode = request.currencyCode || 'GRU';

    // Create transaction record
    const transaction = await prisma.gru_account_transactions.create({
      data: {
        id: uuidv4(),
        transactionId: `GRU-TXN-${uuidv4()}`,
        accountId: request.accountId,
        transactionType: request.transactionType,
        amount,
        currencyCode,
        referenceId: request.referenceId,
        status: 'pending',
        createdAt: new Date(),
        updatedAt: new Date(),
      },
    });

    try {
      // Process transaction based on type
      switch (request.transactionType) {
        case 'spot_conversion':
          await this.processSpotConversion(account, amount, request.metadata);
          break;
        case 'fx_ssu_routing':
          await this.processFxSsuRouting(account, amount, request.metadata);
          break;
        case 'bond_purchase':
          await this.processBondPurchase(account, amount, request.metadata);
          break;
        case 'bond_redemption':
          await this.processBondRedemption(account, amount, request.metadata);
          break;
        case 'reserve_adjustment':
          await this.processReserveAdjustment(account, amount, request.metadata);
          break;
        case 'metaverse_on_ramp':
          await this.processMetaverseOnRamp(account, amount, request.metadata);
          break;
        case 'metaverse_off_ramp':
          await this.processMetaverseOffRamp(account, amount, request.metadata);
          break;
        case 'temporal_settlement':
          await this.processTemporalSettlement(account, amount, request.metadata);
          break;
        default:
          throw new Error(`Unknown transaction type: ${request.transactionType}`);
      }

      // Update transaction status
      await prisma.gru_account_transactions.update({
        where: { transactionId: transaction.transactionId },
        data: {
          status: 'completed',
          executedAt: new Date(),
        },
      });

      return transaction.transactionId;
    } catch (error: any) {
      // Mark transaction as failed
      await prisma.gru_account_transactions.update({
        where: { transactionId: transaction.transactionId },
        data: {
          status: 'failed',
        },
      });

      throw error;
    }
  }

  /**
   * Process spot conversion
   */
  private async processSpotConversion(
    account: any,
    amount: Decimal,
    metadata?: Record<string, unknown>
  ): Promise<void> {
    // Reserve balance for spot conversion
    await gruAccountService.reserveBalance(account.accountId, amount.toString());
    // In production, this would execute the actual spot conversion
  }

  /**
   * Process FX/SSU routing
   */
  private async processFxSsuRouting(
    account: any,
    amount: Decimal,
    metadata?: Record<string, unknown>
  ): Promise<void> {
    // Reserve balance for FX/SSU routing
    await gruAccountService.reserveBalance(account.accountId, amount.toString());
    // In production, this would route through FX/SSU systems
  }

  /**
   * Process bond purchase
   */
  private async processBondPurchase(
    account: any,
    amount: Decimal,
    metadata?: Record<string, unknown>
  ): Promise<void> {
    // Reserve balance for bond purchase
    await gruAccountService.reserveBalance(account.accountId, amount.toString());
    // In production, this would execute bond purchase
  }

  /**
   * Process bond redemption
   */
  private async processBondRedemption(
    account: any,
    amount: Decimal,
    metadata?: Record<string, unknown>
  ): Promise<void> {
    // In production, this would process bond redemption and credit account
    // For now, we'll just update the balance
    await prisma.gru_accounts.update({
      where: { accountId: account.accountId },
      data: {
        balance: account.balance.plus(amount),
        availableBalance: account.availableBalance.plus(amount),
      },
    });
  }

  /**
   * Process reserve adjustment
   */
  private async processReserveAdjustment(
    account: any,
    amount: Decimal,
    metadata?: Record<string, unknown>
  ): Promise<void> {
    // In production, this would adjust reserves
    // For now, we'll update the reserved balance
    if (amount.gt(0)) {
      await gruAccountService.reserveBalance(account.accountId, amount.toString());
    } else {
      await gruAccountService.releaseReservedBalance(
        account.accountId,
        amount.abs().toString()
      );
    }
  }

  /**
   * Process metaverse on-ramp
   */
  private async processMetaverseOnRamp(
    account: any,
    amount: Decimal,
    metadata?: Record<string, unknown>
  ): Promise<void> {
    // Reserve balance for metaverse on-ramp
    await gruAccountService.reserveBalance(account.accountId, amount.toString());
    // In production, this would execute metaverse on-ramp
  }

  /**
   * Process metaverse off-ramp
   */
  private async processMetaverseOffRamp(
    account: any,
    amount: Decimal,
    metadata?: Record<string, unknown>
  ): Promise<void> {
    // In production, this would process metaverse off-ramp and credit account
    await prisma.gru_accounts.update({
      where: { accountId: account.accountId },
      data: {
        balance: account.balance.plus(amount),
        availableBalance: account.availableBalance.plus(amount),
      },
    });
  }

  /**
   * Process temporal settlement
   */
  private async processTemporalSettlement(
    account: any,
    amount: Decimal,
    metadata?: Record<string, unknown>
  ): Promise<void> {
    // Reserve balance for temporal settlement
    await gruAccountService.reserveBalance(account.accountId, amount.toString());
    // In production, this would execute temporal settlement (t−Δ / t+Δ)
  }

  /**
   * Execute end-of-day closeout
   */
  async executeEndOfDayCloseout(
    request: EndOfDayCloseoutRequest
  ): Promise<string> {
    const operation = await prisma.gru_daily_operations.findUnique({
      where: { operationId: request.operationId },
    });

    if (!operation) {
      throw new Error(`Operation not found: ${request.operationId}`);
    }

    // Create EOD closeout record
    const closeout = await prisma.gru_end_of_day_closeouts.create({
      data: {
        id: uuidv4(),
        closeoutId: `GRU-EOD-${uuidv4()}`,
        operationId: request.operationId,
        closeoutDate: new Date(),
        status: 'in_progress',
        createdAt: new Date(),
        updatedAt: new Date(),
      },
    });

    try {
      // 1. GAS reconciliation
      await this.reconcileGAS(closeout.closeoutId);

      // 2. Quantum drift correction
      await this.correctQuantumDrift(closeout.closeoutId);

      // 3. Sovereign exposure update
      await this.updateSovereignExposure(closeout.closeoutId);

      // 4. Compliance snapshot to ARI
      await this.generateComplianceSnapshot(closeout.closeoutId);

      // Update closeout status
      await prisma.gru_end_of_day_closeouts.update({
        where: { closeoutId: closeout.closeoutId },
        data: {
          gasReconciliationStatus: 'completed',
          quantumDriftCorrectionStatus: 'completed',
          sovereignExposureUpdateStatus: 'completed',
          complianceSnapshotStatus: 'completed',
          status: 'completed',
          completedAt: new Date(),
        },
      });

      return closeout.closeoutId;
    } catch (error: any) {
      // Mark closeout as failed
      await prisma.gru_end_of_day_closeouts.update({
        where: { closeoutId: closeout.closeoutId },
        data: {
          status: 'failed',
        },
      });

      throw new Error(`End-of-day closeout failed: ${error.message}`);
    }
  }

  /**
   * Reconcile GAS (delegated to reconciliation service)
   */
  private async reconcileGAS(closeoutId: string): Promise<void> {
    // This will be implemented in the reconciliation service
    // For now, we'll just mark it as completed
  }

  /**
   * Correct quantum drift (delegated to reconciliation service)
   */
  private async correctQuantumDrift(closeoutId: string): Promise<void> {
    // This will be implemented in the reconciliation service
  }

  /**
   * Update sovereign exposure (delegated to reconciliation service)
   */
  private async updateSovereignExposure(closeoutId: string): Promise<void> {
    // This will be implemented in the reconciliation service
  }

  /**
   * Generate compliance snapshot (delegated to compliance service)
   */
  private async generateComplianceSnapshot(closeoutId: string): Promise<void> {
    // This will be implemented in the compliance service
  }
}

export const gruDailyOperationsService = new GruDailyOperationsService();

