// AS4 Chain Anchor Service
// Periodic anchoring to ChainID 138

import prisma from '@/shared/database/prisma';
import { logger } from '@/infrastructure/monitoring/logger';

export interface ChainAnchor {
  anchorId: string;
  blockNumber: number;
  blockHash: string;
  transactionHash: string;
  instructionIds: string[];
  anchoredAt: Date;
}

export class ChainAnchorService {
  /**
   * Anchor settlement batch to ChainID 138
   */
  async anchorBatch(instructionIds: string[]): Promise<ChainAnchor> {
    // TODO: Implement actual chain anchoring via rpc-translator-138
    // This would:
    // 1. Create a batch transaction
    // 2. Submit to ChainID 138
    // 3. Wait for confirmation
    // 4. Store anchor record

    const anchorId = `ANCHOR-${Date.now()}`;

    logger.info('Chain anchor created', {
      anchorId,
      instructionCount: instructionIds.length,
    });

    // Placeholder: return mock anchor
    return {
      anchorId,
      blockNumber: 0, // TODO: Get from chain
      blockHash: '0x0000000000000000000000000000000000000000000000000000000000000000',
      transactionHash: '0x0000000000000000000000000000000000000000000000000000000000000000',
      instructionIds,
      anchoredAt: new Date(),
    };
  }

  /**
   * Get anchor for instruction
   */
  async getAnchorForInstruction(instructionId: string): Promise<ChainAnchor | null> {
    // TODO: Query chain or database for anchor
    return null;
  }
}

export const chainAnchorService = new ChainAnchorService();
