import * as plugins from '../plugins.js';
import { Device } from '../abstract/device.abstract.js';
import {
  UpnpSoapClient,
  UPNP_SERVICE_TYPES,
  type IDlnaContentItem,
  type IDlnaBrowseResult,
} from './dlna.classes.upnp.js';
import type { IDeviceInfo, IRetryOptions } from '../interfaces/index.js';
import type { ISsdpDevice, ISsdpService } from '../discovery/discovery.classes.ssdp.js';

/**
 * DLNA Server device info
 */
export interface IDlnaServerInfo extends IDeviceInfo {
  type: 'dlna-server';
  friendlyName: string;
  modelName: string;
  modelNumber?: string;
  manufacturer: string;
  udn: string;
  iconUrl?: string;
  contentCount?: number;
}

/**
 * Content directory statistics
 */
export interface IDlnaServerStats {
  totalItems: number;
  audioItems: number;
  videoItems: number;
  imageItems: number;
  containers: number;
}

/**
 * DLNA Media Server device
 * Represents a device that serves media content (NAS, media library, etc.)
 */
export class DlnaServer extends Device {
  private soapClient: UpnpSoapClient | null = null;
  private contentDirectoryUrl: string = '';
  private baseUrl: string = '';

  private _friendlyName: string;
  private _modelName: string = '';
  private _modelNumber?: string;
  private _udn: string = '';
  private _iconUrl?: string;
  private _contentCount?: number;

  constructor(
    info: IDeviceInfo,
    options: {
      friendlyName: string;
      baseUrl: string;
      contentDirectoryUrl?: string;
      modelName?: string;
      modelNumber?: string;
      udn?: string;
      iconUrl?: string;
    },
    retryOptions?: IRetryOptions
  ) {
    super(info, retryOptions);
    this._friendlyName = options.friendlyName;
    this.baseUrl = options.baseUrl;
    this.contentDirectoryUrl = options.contentDirectoryUrl || '/ContentDirectory/control';
    this._modelName = options.modelName || '';
    this._modelNumber = options.modelNumber;
    this._udn = options.udn || '';
    this._iconUrl = options.iconUrl;
  }

  // Getters
  public get friendlyName(): string {
    return this._friendlyName;
  }

  public get modelName(): string {
    return this._modelName;
  }

  public get modelNumber(): string | undefined {
    return this._modelNumber;
  }

  public get udn(): string {
    return this._udn;
  }

  public get iconUrl(): string | undefined {
    return this._iconUrl;
  }

  public get contentCount(): number | undefined {
    return this._contentCount;
  }

  /**
   * Connect to server
   */
  protected async doConnect(): Promise<void> {
    this.soapClient = new UpnpSoapClient(this.baseUrl);

    // Test connection by browsing root
    try {
      const root = await this.browse('0', 0, 1);
      this._contentCount = root.totalMatches;
    } catch (error) {
      this.soapClient = null;
      throw error;
    }
  }

  /**
   * Disconnect
   */
  protected async doDisconnect(): Promise<void> {
    this.soapClient = null;
  }

  /**
   * Refresh status
   */
  public async refreshStatus(): Promise<void> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    const root = await this.browse('0', 0, 1);
    this._contentCount = root.totalMatches;

    this.emit('status:updated', this.getDeviceInfo());
  }

  // ============================================================================
  // Content Directory Browsing
  // ============================================================================

  /**
   * Browse content directory
   */
  public async browse(
    objectId: string = '0',
    startIndex: number = 0,
    requestCount: number = 100
  ): Promise<IDlnaBrowseResult> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    return this.soapClient.browse(
      this.contentDirectoryUrl,
      objectId,
      'BrowseDirectChildren',
      '*',
      startIndex,
      requestCount
    );
  }

  /**
   * Get metadata for a specific item
   */
  public async getMetadata(objectId: string): Promise<IDlnaContentItem | null> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    const result = await this.soapClient.browse(
      this.contentDirectoryUrl,
      objectId,
      'BrowseMetadata',
      '*',
      0,
      1
    );

    return result.items[0] || null;
  }

  /**
   * Search content directory
   */
  public async search(
    containerId: string,
    searchCriteria: string,
    startIndex: number = 0,
    requestCount: number = 100
  ): Promise<IDlnaBrowseResult> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    return this.soapClient.search(
      this.contentDirectoryUrl,
      containerId,
      searchCriteria,
      '*',
      startIndex,
      requestCount
    );
  }

  /**
   * Browse all items recursively (up to limit)
   */
  public async browseAll(
    objectId: string = '0',
    limit: number = 1000
  ): Promise<IDlnaContentItem[]> {
    const allItems: IDlnaContentItem[] = [];
    let startIndex = 0;
    const batchSize = 100;

    while (allItems.length < limit) {
      const result = await this.browse(objectId, startIndex, batchSize);
      allItems.push(...result.items);

      if (result.items.length < batchSize || allItems.length >= result.totalMatches) {
        break;
      }

      startIndex += result.items.length;
    }

    return allItems.slice(0, limit);
  }

  /**
   * Get content statistics
   */
  public async getStats(): Promise<IDlnaServerStats> {
    const stats: IDlnaServerStats = {
      totalItems: 0,
      audioItems: 0,
      videoItems: 0,
      imageItems: 0,
      containers: 0,
    };

    // Browse root to get counts
    const root = await this.browseAll('0', 500);

    for (const item of root) {
      stats.totalItems++;

      if (item.class.includes('container')) {
        stats.containers++;
      } else if (item.class.includes('audioItem')) {
        stats.audioItems++;
      } else if (item.class.includes('videoItem')) {
        stats.videoItems++;
      } else if (item.class.includes('imageItem')) {
        stats.imageItems++;
      }
    }

    return stats;
  }

  // ============================================================================
  // Content Access
  // ============================================================================

  /**
   * Get stream URL for content item
   */
  public getStreamUrl(item: IDlnaContentItem): string | null {
    if (!item.res || item.res.length === 0) {
      return null;
    }

    // Return first resource URL
    return item.res[0].url;
  }

  /**
   * Get best quality stream URL
   */
  public getBestStreamUrl(item: IDlnaContentItem, preferredType?: string): string | null {
    if (!item.res || item.res.length === 0) {
      return null;
    }

    // Sort by bitrate (highest first)
    const sorted = [...item.res].sort((a, b) => (b.bitrate || 0) - (a.bitrate || 0));

    // If preferred type specified, try to find matching
    if (preferredType) {
      const preferred = sorted.find((r) =>
        r.protocolInfo.toLowerCase().includes(preferredType.toLowerCase())
      );
      if (preferred) return preferred.url;
    }

    return sorted[0].url;
  }

  /**
   * Get album art URL for item
   */
  public getAlbumArtUrl(item: IDlnaContentItem): string | null {
    if (item.albumArtUri) {
      // Resolve relative URLs
      if (!item.albumArtUri.startsWith('http')) {
        return `${this.baseUrl}${item.albumArtUri}`;
      }
      return item.albumArtUri;
    }
    return null;
  }

  // ============================================================================
  // Search Helpers
  // ============================================================================

  /**
   * Search for audio items by title
   */
  public async searchAudio(
    title: string,
    startIndex: number = 0,
    requestCount: number = 100
  ): Promise<IDlnaBrowseResult> {
    const criteria = `dc:title contains "${title}" and upnp:class derivedfrom "object.item.audioItem"`;
    return this.search('0', criteria, startIndex, requestCount);
  }

  /**
   * Search for video items by title
   */
  public async searchVideo(
    title: string,
    startIndex: number = 0,
    requestCount: number = 100
  ): Promise<IDlnaBrowseResult> {
    const criteria = `dc:title contains "${title}" and upnp:class derivedfrom "object.item.videoItem"`;
    return this.search('0', criteria, startIndex, requestCount);
  }

  /**
   * Search by artist
   */
  public async searchByArtist(
    artist: string,
    startIndex: number = 0,
    requestCount: number = 100
  ): Promise<IDlnaBrowseResult> {
    const criteria = `dc:creator contains "${artist}" or upnp:artist contains "${artist}"`;
    return this.search('0', criteria, startIndex, requestCount);
  }

  /**
   * Search by album
   */
  public async searchByAlbum(
    album: string,
    startIndex: number = 0,
    requestCount: number = 100
  ): Promise<IDlnaBrowseResult> {
    const criteria = `upnp:album contains "${album}"`;
    return this.search('0', criteria, startIndex, requestCount);
  }

  /**
   * Search by genre
   */
  public async searchByGenre(
    genre: string,
    startIndex: number = 0,
    requestCount: number = 100
  ): Promise<IDlnaBrowseResult> {
    const criteria = `upnp:genre contains "${genre}"`;
    return this.search('0', criteria, startIndex, requestCount);
  }

  // ============================================================================
  // Device Info
  // ============================================================================

  /**
   * Get device info
   */
  public getDeviceInfo(): IDlnaServerInfo {
    return {
      id: this.id,
      name: this.name,
      type: 'dlna-server',
      address: this.address,
      port: this.port,
      status: this.status,
      friendlyName: this._friendlyName,
      modelName: this._modelName,
      modelNumber: this._modelNumber,
      manufacturer: this.manufacturer || '',
      udn: this._udn,
      iconUrl: this._iconUrl,
      contentCount: this._contentCount,
    };
  }

  /**
   * Create from SSDP discovery
   */
  public static fromSsdpDevice(
    ssdpDevice: ISsdpDevice,
    retryOptions?: IRetryOptions
  ): DlnaServer | null {
    if (!ssdpDevice.description) {
      return null;
    }

    const desc = ssdpDevice.description;

    // Find ContentDirectory URL
    const contentDirectory = desc.services.find((s) =>
      s.serviceType.includes('ContentDirectory')
    );

    if (!contentDirectory) {
      return null;  // Not a media server
    }

    // Build base URL
    const baseUrl = new URL(ssdpDevice.location);
    const baseUrlStr = `${baseUrl.protocol}//${baseUrl.host}`;

    // Get icon URL
    let iconUrl: string | undefined;
    if (desc.icons && desc.icons.length > 0) {
      const bestIcon = desc.icons.sort((a, b) => b.width - a.width)[0];
      iconUrl = bestIcon.url.startsWith('http')
        ? bestIcon.url
        : `${baseUrlStr}${bestIcon.url}`;
    }

    const info: IDeviceInfo = {
      id: `dlna-server:${desc.UDN}`,
      name: desc.friendlyName,
      type: 'dlna-server',
      address: ssdpDevice.address,
      port: ssdpDevice.port,
      status: 'unknown',
      manufacturer: desc.manufacturer,
      model: desc.modelName,
    };

    return new DlnaServer(
      info,
      {
        friendlyName: desc.friendlyName,
        baseUrl: baseUrlStr,
        contentDirectoryUrl: contentDirectory.controlURL,
        modelName: desc.modelName,
        modelNumber: desc.modelNumber,
        udn: desc.UDN,
        iconUrl,
      },
      retryOptions
    );
  }
}

// Re-export content types
export type { IDlnaContentItem, IDlnaBrowseResult } from './dlna.classes.upnp.js';