// MSGF Policy Service
// Policy creation and enforcement

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


export interface CreatePolicyRequest {
  councilId: string;
  policyType: 'fx_governance' | 'cbdc_interoperability' | 'ssu_composition' | 'global_liquidity';
  policyTitle: string;
  policyContent: Record<string, unknown>;
  enforcementLevel: 'advisory' | 'mandatory' | 'critical';
  effectiveDate?: Date;
}

export class MsgfPolicyService {
  /**
   * Create meta-sovereign policy
   */
  async createPolicy(request: CreatePolicyRequest) {
    const policyId = `MSGF-POL-${uuidv4()}`;

    const policy = await prisma.metaSovereignPolicy.create({
      data: {
        policyId,
        councilId: request.councilId,
        policyType: request.policyType,
        policyTitle: request.policyTitle,
        policyContent: request.policyContent,
        enforcementLevel: request.enforcementLevel,
        status: 'draft',
        effectiveDate: request.effectiveDate || null,
      },
    });

    return policy;
  }

  /**
   * Get policy by ID
   */
  async getPolicy(policyId: string) {
    const policy = await prisma.metaSovereignPolicy.findUnique({
      where: { policyId },
      include: {
        council: true,
        enforcements: true,
      },
    });

    if (!policy) {
      throw new Error(`Policy not found: ${policyId}`);
    }

    return policy;
  }

  /**
   * Get all policies
   */
  async getAllPolicies(filters?: {
    councilId?: string;
    policyType?: string;
    status?: string;
  }) {
    const where: Record<string, unknown> = {};

    if (filters?.councilId) {
      where.councilId = filters.councilId;
    }
    if (filters?.policyType) {
      where.policyType = filters.policyType;
    }
    if (filters?.status) {
      where.status = filters.status;
    }

    return prisma.metaSovereignPolicy.findMany({
      where,
      include: {
        council: true,
        _count: {
          select: {
            enforcements: true,
          },
        },
      },
      orderBy: {
        createdAt: 'desc',
      },
    });
  }

  /**
   * Activate policy
   */
  async activatePolicy(policyId: string, effectiveDate?: Date) {
    return prisma.metaSovereignPolicy.update({
      where: { policyId },
      data: {
        status: 'active',
        effectiveDate: effectiveDate || new Date(),
      },
    });
  }

  /**
   * Suspend policy
   */
  async suspendPolicy(policyId: string) {
    return prisma.metaSovereignPolicy.update({
      where: { policyId },
      data: {
        status: 'suspended',
      },
    });
  }

  /**
   * Revoke policy
   */
  async revokePolicy(policyId: string) {
    return prisma.metaSovereignPolicy.update({
      where: { policyId },
      data: {
        status: 'revoked',
        revokedAt: new Date(),
      },
    });
  }
}

export const msgfPolicyService = new MsgfPolicyService();

