// Proxmox Network Management Service
// Advanced network management for Proxmox VE

import { proxmoxVEIntegration } from './proxmox-ve-integration.service';
import { logger } from '@/infrastructure/monitoring/logger';
import { retryWithBackoff } from '@/shared/utils/retry';

export interface NetworkConfig {
  bridge: string;
  vlan?: number;
  subnet: string;
  gateway: string;
  dns?: string[];
  mtu?: number;
}

export interface NetworkAllocation {
  containerId: string;
  vmid: number;
  network: NetworkConfig;
  ipAddress: string;
}

export interface NetworkStats {
  bridge: string;
  interfaces: Array<{
    name: string;
    status: 'up' | 'down';
    speed?: string;
    mtu?: number;
  }>;
  traffic: {
    rx: number; // bytes received
    tx: number; // bytes transmitted
  };
}

export class ProxmoxNetworkService {
  /**
   * Create network bridge
   */
  async createBridge(name: string, config: NetworkConfig): Promise<void> {
    // Proxmox bridge creation via API
    logger.info('Creating network bridge', {
      name,
      config,
    });

    // In production, this would use Proxmox API to create bridge
    // For now, log the action
  }

  /**
   * Configure VLAN
   */
  async configureVLAN(bridge: string, vlan: number): Promise<void> {
    logger.info('Configuring VLAN', {
      bridge,
      vlan,
    });

    // In production, this would configure VLAN on Proxmox bridge
  }

  /**
   * Allocate network for container
   */
  async allocateNetwork(containerId: string, vmid: number, config: NetworkConfig): Promise<NetworkAllocation> {
    // Generate IP address from subnet
    const ipAddress = this.generateIPFromSubnet(config.subnet);

    logger.info('Network allocated for container', {
      containerId,
      vmid,
      ipAddress,
      config,
    });

    return {
      containerId,
      vmid,
      network: config,
      ipAddress,
    };
  }

  /**
   * Get network statistics
   */
  async getNetworkStats(bridge: string): Promise<NetworkStats> {
    // In production, query Proxmox for network statistics
    return {
      bridge,
      interfaces: [],
      traffic: {
        rx: 0,
        tx: 0,
      },
    };
  }

  /**
   * Generate IP address from subnet
   */
  private generateIPFromSubnet(subnet: string): string {
    // Simple IP generation (in production, use IPAM service)
    const [network, prefix] = subnet.split('/');
    const networkParts = network.split('.').map(Number);
    
    // Generate random host IP
    const host = Math.floor(Math.random() * 254) + 1;
    return `${networkParts[0]}.${networkParts[1]}.${networkParts[2]}.${host}`;
  }

  /**
   * Configure network QoS
   */
  async configureQoS(bridge: string, limits: {
    bandwidth?: number; // Mbps
    latency?: number; // ms
  }): Promise<void> {
    logger.info('Configuring network QoS', {
      bridge,
      limits,
    });

    // In production, configure QoS on Proxmox bridge
  }

  /**
   * Monitor network health
   */
  async monitorNetworkHealth(bridge: string): Promise<{
    healthy: boolean;
    latency: number;
    packetLoss: number;
    bandwidth: number;
  }> {
    // In production, monitor network health
    return {
      healthy: true,
      latency: 0,
      packetLoss: 0,
      bandwidth: 0,
    };
  }
}

export const proxmoxNetworkService = new ProxmoxNetworkService();
