import type { UnifiController } from './classes.unifi-controller.js';
import { UnifiClient } from './classes.client.js';
import type { INetworkClient, IUnifiApiResponse } from './interfaces/index.js';
import { logger } from './unifi.logger.js';

/**
 * Manager for UniFi network clients
 */
export class ClientManager {
  private controller: UnifiController;

  constructor(controller: UnifiController) {
    this.controller = controller;
  }

  /**
   * List all active (connected) clients for a site
   */
  public async listActiveClients(siteId: string = 'default'): Promise<UnifiClient[]> {
    logger.log('debug', `Fetching active clients for site: ${siteId}`);

    const response = await this.controller.request<IUnifiApiResponse<INetworkClient>>(
      'GET',
      `/api/s/${siteId}/stat/sta`
    );

    const clients: UnifiClient[] = [];
    for (const clientData of response.data || []) {
      clients.push(UnifiClient.createFromApiObject(clientData, this.controller, siteId));
    }

    logger.log('info', `Found ${clients.length} active clients`);
    return clients;
  }

  /**
   * List all known clients (including historical)
   */
  public async listAllClients(siteId: string = 'default'): Promise<UnifiClient[]> {
    logger.log('debug', `Fetching all known clients for site: ${siteId}`);

    const response = await this.controller.request<IUnifiApiResponse<INetworkClient>>(
      'GET',
      `/api/s/${siteId}/rest/user`
    );

    const clients: UnifiClient[] = [];
    for (const clientData of response.data || []) {
      clients.push(UnifiClient.createFromApiObject(clientData, this.controller, siteId));
    }

    logger.log('info', `Found ${clients.length} known clients`);
    return clients;
  }

  /**
   * Get a client by MAC address
   */
  public async getClientByMac(mac: string, siteId: string = 'default'): Promise<UnifiClient | null> {
    const normalizedMac = mac.toLowerCase().replace(/[:-]/g, ':');
    const clients = await this.listActiveClients(siteId);
    return clients.find((client) => client.mac.toLowerCase() === normalizedMac) || null;
  }

  /**
   * Get a client by IP address
   */
  public async getClientByIp(ip: string, siteId: string = 'default'): Promise<UnifiClient | null> {
    const clients = await this.listActiveClients(siteId);
    return clients.find((client) => client.ip === ip) || null;
  }

  /**
   * Get a client by hostname
   */
  public async getClientByHostname(hostname: string, siteId: string = 'default'): Promise<UnifiClient | null> {
    const clients = await this.listActiveClients(siteId);
    return clients.find(
      (client) => client.hostname?.toLowerCase() === hostname.toLowerCase()
    ) || null;
  }

  /**
   * Get wired clients only
   */
  public async getWiredClients(siteId: string = 'default'): Promise<UnifiClient[]> {
    const clients = await this.listActiveClients(siteId);
    return clients.filter((client) => client.is_wired);
  }

  /**
   * Get wireless clients only
   */
  public async getWirelessClients(siteId: string = 'default'): Promise<UnifiClient[]> {
    const clients = await this.listActiveClients(siteId);
    return clients.filter((client) => client.isWireless());
  }

  /**
   * Get guest clients only
   */
  public async getGuestClients(siteId: string = 'default'): Promise<UnifiClient[]> {
    const clients = await this.listActiveClients(siteId);
    return clients.filter((client) => client.isGuest());
  }

  /**
   * Get clients connected to a specific AP
   */
  public async getClientsByAP(apMac: string, siteId: string = 'default'): Promise<UnifiClient[]> {
    const normalizedMac = apMac.toLowerCase();
    const clients = await this.listActiveClients(siteId);
    return clients.filter((client) => client.uplink_mac?.toLowerCase() === normalizedMac);
  }

  /**
   * Get clients on a specific SSID
   */
  public async getClientsBySSID(ssid: string, siteId: string = 'default'): Promise<UnifiClient[]> {
    const clients = await this.listActiveClients(siteId);
    return clients.filter((client) => client.essid === ssid);
  }

  /**
   * Block a client by MAC address
   */
  public async blockClient(mac: string, siteId: string = 'default'): Promise<void> {
    logger.log('info', `Blocking client: ${mac}`);

    await this.controller.request(
      'POST',
      `/api/s/${siteId}/cmd/stamgr`,
      {
        cmd: 'block-sta',
        mac: mac.toLowerCase(),
      }
    );
  }

  /**
   * Unblock a client by MAC address
   */
  public async unblockClient(mac: string, siteId: string = 'default'): Promise<void> {
    logger.log('info', `Unblocking client: ${mac}`);

    await this.controller.request(
      'POST',
      `/api/s/${siteId}/cmd/stamgr`,
      {
        cmd: 'unblock-sta',
        mac: mac.toLowerCase(),
      }
    );
  }

  /**
   * Reconnect (kick) a client by MAC address
   */
  public async reconnectClient(mac: string, siteId: string = 'default'): Promise<void> {
    logger.log('info', `Reconnecting client: ${mac}`);

    await this.controller.request(
      'POST',
      `/api/s/${siteId}/cmd/stamgr`,
      {
        cmd: 'kick-sta',
        mac: mac.toLowerCase(),
      }
    );
  }

  /**
   * Authorize a guest client
   */
  public async authorizeGuest(
    mac: string,
    minutes: number = 60,
    options: {
      up?: number; // Upload bandwidth limit in Kbps
      down?: number; // Download bandwidth limit in Kbps
      bytes?: number; // Data quota in MB
      apMac?: string; // Specific AP MAC
    } = {},
    siteId: string = 'default'
  ): Promise<void> {
    logger.log('info', `Authorizing guest: ${mac} for ${minutes} minutes`);

    await this.controller.request(
      'POST',
      `/api/s/${siteId}/cmd/stamgr`,
      {
        cmd: 'authorize-guest',
        mac: mac.toLowerCase(),
        minutes,
        up: options.up,
        down: options.down,
        bytes: options.bytes,
        ap_mac: options.apMac?.toLowerCase(),
      }
    );
  }

  /**
   * Unauthorize a guest client
   */
  public async unauthorizeGuest(mac: string, siteId: string = 'default'): Promise<void> {
    logger.log('info', `Unauthorizing guest: ${mac}`);

    await this.controller.request(
      'POST',
      `/api/s/${siteId}/cmd/stamgr`,
      {
        cmd: 'unauthorize-guest',
        mac: mac.toLowerCase(),
      }
    );
  }

  /**
   * Set or update client name/alias
   */
  public async setClientName(mac: string, name: string, siteId: string = 'default'): Promise<void> {
    logger.log('info', `Setting client name: ${mac} -> ${name}`);

    // First try to find existing user
    const allClients = await this.listAllClients(siteId);
    const existingClient = allClients.find(
      (c) => c.mac.toLowerCase() === mac.toLowerCase()
    );

    if (existingClient?.user_id) {
      // Update existing user
      await this.controller.request(
        'PUT',
        `/api/s/${siteId}/rest/user/${existingClient.user_id}`,
        { name }
      );
    } else {
      // Create new user entry
      await this.controller.request(
        'POST',
        `/api/s/${siteId}/rest/user`,
        {
          mac: mac.toLowerCase(),
          name,
        }
      );
    }
  }

  /**
   * Get blocked clients
   */
  public async getBlockedClients(siteId: string = 'default'): Promise<UnifiClient[]> {
    logger.log('debug', `Fetching blocked clients for site: ${siteId}`);

    // Blocked clients are in the user endpoint with blocked=true
    const allClients = await this.listAllClients(siteId);
    // Note: This filtering may need adjustment based on actual API response
    return allClients.filter((client) => (client as any).blocked === true);
  }
}