// DeFi Module Service
// Permissioned module management

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


export interface ModuleCreationRequest {
  moduleName: string;
  moduleType: string; // swap, lending, staking, liquidity_pool
  permissionLevel: string; // permissioned, sovereign_verified
  moduleConfig: Record<string, unknown>;
}

export interface ModuleApprovalRequest {
  moduleId: string;
  approvedBy: string; // SCB or DBIS entity
}

export class DeFiModuleService {
  /**
   * Create DeFi module
   */
  async createModule(
    request: ModuleCreationRequest
  ): Promise<{ moduleId: string }> {
    const moduleId = `DEFI-${uuidv4()}`;

    const module = await prisma.deFiModule.create({
      data: {
        moduleId,
        moduleName: request.moduleName,
        moduleType: request.moduleType,
        permissionLevel: request.permissionLevel,
        moduleConfig: request.moduleConfig as Prisma.InputJsonValue,
        status: 'pending',
      },
    });

    return {
      moduleId: module.moduleId,
    };
  }

  /**
   * Approve module
   */
  async approveModule(
    request: ModuleApprovalRequest
  ): Promise<void> {
    await prisma.deFiModule.update({
      where: { moduleId: request.moduleId },
      data: {
        status: 'approved',
        approvalDate: new Date(),
        approvedBy: request.approvedBy,
      },
    });
  }

  /**
   * Activate module
   */
  async activateModule(moduleId: string): Promise<void> {
    const module = await prisma.deFiModule.findUnique({
      where: { moduleId },
    });

    if (!module) {
      throw new Error(`Module not found: ${moduleId}`);
    }

    if (module.status !== 'approved') {
      throw new Error(`Module must be approved before activation: ${module.status}`);
    }

    await prisma.deFiModule.update({
      where: { moduleId },
      data: { status: 'active' },
    });
  }

  /**
   * Suspend module
   */
  async suspendModule(moduleId: string): Promise<void> {
    await prisma.deFiModule.update({
      where: { moduleId },
      data: { status: 'suspended' },
    });
  }

  /**
   * Get module
   */
  async getModule(moduleId: string): Promise<any | null> {
    const module = await prisma.deFiModule.findUnique({
      where: { moduleId },
      include: {
        nodes: true,
        pools: true,
        swaps: true,
      },
    });

    return module;
  }

  /**
   * Get all active modules
   */
  async getActiveModules(): Promise<any[]> {
    const modules = await prisma.deFiModule.findMany({
      where: { status: 'active' },
      orderBy: { createdAt: 'desc' },
    });

    return modules;
  }
}

export const defiModuleService = new DeFiModuleService();

