// Admin Audit Service
// Audit logging for all admin console actions

import { v4 as uuidv4 } from 'uuid';
import prisma from '@/shared/database/prisma';
import { logger } from '@/infrastructure/monitoring/logger';
import { AdminPermission } from './permissions.constants';

export interface AdminActionAudit {
  employeeId: string;
  action: string;
  permission: AdminPermission;
  resourceType: string;
  resourceId?: string;
  beforeState?: Record<string, unknown>;
  afterState?: Record<string, unknown>;
  metadata?: Record<string, unknown>;
  ipAddress?: string;
  userAgent?: string;
}

export class AdminAuditService {
  /**
   * Log admin action
   */
  async logAction(audit: AdminActionAudit): Promise<void> {
    try {
      // Store in audit log (extend existing audit infrastructure)
      // For now, we'll use logger and could extend to database table
      logger.info('Admin action', {
        auditId: uuidv4(),
        employeeId: audit.employeeId,
        action: audit.action,
        permission: audit.permission,
        resourceType: audit.resourceType,
        resourceId: audit.resourceId,
        beforeState: audit.beforeState,
        afterState: audit.afterState,
        metadata: audit.metadata,
        ipAddress: audit.ipAddress,
        userAgent: audit.userAgent,
        timestamp: new Date(),
      });

      // TODO: Store in AdminActionAudit table when schema is added
    } catch (error) {
      logger.error('Error logging admin action', {
        error: error instanceof Error ? error.message : 'Unknown error',
        audit,
      });
    }
  }

  /**
   * Get audit log for employee
   */
  async getAuditLog(
    employeeId?: string,
    resourceType?: string,
    limit: number = 100
  ): Promise<AdminActionAudit[]> {
    try {
      // TODO: Query from AdminActionAudit table
      // For now, return empty array
      return [];
    } catch (error) {
      logger.error('Error getting audit log', {
        error: error instanceof Error ? error.message : 'Unknown error',
        employeeId,
        resourceType,
      });
      return [];
    }
  }

  /**
   * Export audit log for regulators
   */
  async exportAuditLog(
    startDate: Date,
    endDate: Date,
    employeeId?: string
  ): Promise<AdminActionAudit[]> {
    try {
      // TODO: Query and format for export
      return [];
    } catch (error) {
      logger.error('Error exporting audit log', {
        error: error instanceof Error ? error.message : 'Unknown error',
        startDate,
        endDate,
        employeeId,
      });
      return [];
    }
  }
}

export const adminAuditService = new AdminAuditService();

