// DeFi Node Service
// Node verification and governance

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


export interface NodeRegistrationRequest {
  moduleId: string;
  sovereignBankId?: string;
  nodeType: string; // sovereign_verified, dbis_governed
  nodeAddress?: string;
}

export interface NodeVerificationRequest {
  nodeId: string;
}

export class DeFiNodeService {
  /**
   * Register node
   */
  async registerNode(
    request: NodeRegistrationRequest
  ): Promise<{ nodeId: string }> {
    const nodeId = `NODE-${uuidv4()}`;

    const node = await prisma.deFiNode.create({
      data: {
        nodeId,
        moduleId: request.moduleId,
        sovereignBankId: request.sovereignBankId || null,
        nodeType: request.nodeType,
        nodeAddress: request.nodeAddress || null,
        verificationStatus: 'pending',
        status: 'active',
      },
    });

    return {
      nodeId: node.nodeId,
    };
  }

  /**
   * Verify node
   */
  async verifyNode(
    request: NodeVerificationRequest
  ): Promise<void> {
    const node = await prisma.deFiNode.findUnique({
      where: { nodeId: request.nodeId },
    });

    if (!node) {
      throw new Error(`Node not found: ${request.nodeId}`);
    }

    // In production, would perform actual verification
    // For now, just mark as verified
    await prisma.deFiNode.update({
      where: { nodeId: request.nodeId },
      data: {
        verificationStatus: 'verified',
        verificationDate: new Date(),
      },
    });
  }

  /**
   * Revoke node
   */
  async revokeNode(nodeId: string): Promise<void> {
    await prisma.deFiNode.update({
      where: { nodeId },
      data: {
        verificationStatus: 'revoked',
        status: 'revoked',
      },
    });
  }

  /**
   * Get verified nodes for module
   */
  async getVerifiedNodes(moduleId: string): Promise<any[]> {
    const nodes = await prisma.deFiNode.findMany({
      where: {
        moduleId,
        verificationStatus: 'verified',
        status: 'active',
      },
    });

    return nodes;
  }
}

export const defiNodeService = new DeFiNodeService();

