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

/**
 * DLNA Renderer device info
 */
export interface IDlnaRendererInfo extends IDeviceInfo {
  type: 'dlna-renderer';
  friendlyName: string;
  modelName: string;
  modelNumber?: string;
  manufacturer: string;
  udn: string;
  iconUrl?: string;
  supportsVolume: boolean;
  supportsSeek: boolean;
}

/**
 * Playback state
 */
export interface IDlnaPlaybackState {
  state: TDlnaTransportState;
  volume: number;
  muted: boolean;
  currentUri: string;
  currentTrack: {
    title: string;
    artist?: string;
    album?: string;
    duration: number;
    position: number;
    albumArtUri?: string;
  };
}

/**
 * DLNA Media Renderer device
 * Represents a device that can play media (TV, speaker, etc.)
 */
export class DlnaRenderer extends Device {
  private soapClient: UpnpSoapClient | null = null;
  private avTransportUrl: string = '';
  private renderingControlUrl: string = '';
  private baseUrl: string = '';

  private _friendlyName: string;
  private _modelName: string = '';
  private _modelNumber?: string;
  private _udn: string = '';
  private _iconUrl?: string;
  private _supportsVolume: boolean = true;
  private _supportsSeek: boolean = true;

  private _currentState: TDlnaTransportState = 'STOPPED';
  private _currentVolume: number = 0;
  private _currentMuted: boolean = false;

  constructor(
    info: IDeviceInfo,
    options: {
      friendlyName: string;
      baseUrl: string;
      avTransportUrl?: string;
      renderingControlUrl?: string;
      modelName?: string;
      modelNumber?: string;
      udn?: string;
      iconUrl?: string;
    },
    retryOptions?: IRetryOptions
  ) {
    super(info, retryOptions);
    this._friendlyName = options.friendlyName;
    this.baseUrl = options.baseUrl;
    this.avTransportUrl = options.avTransportUrl || '/AVTransport/control';
    this.renderingControlUrl = options.renderingControlUrl || '/RenderingControl/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 supportsVolume(): boolean {
    return this._supportsVolume;
  }

  public get supportsSeek(): boolean {
    return this._supportsSeek;
  }

  public get currentState(): TDlnaTransportState {
    return this._currentState;
  }

  public get currentVolume(): number {
    return this._currentVolume;
  }

  public get currentMuted(): boolean {
    return this._currentMuted;
  }

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

    // Test connection by getting transport info
    try {
      await this.getTransportInfo();
    } catch (error) {
      this.soapClient = null;
      throw error;
    }

    // Try to get volume (may not be supported)
    try {
      this._currentVolume = await this.getVolume();
      this._supportsVolume = true;
    } catch {
      this._supportsVolume = false;
    }
  }

  /**
   * 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 [transport, volume, muted] = await Promise.all([
      this.getTransportInfo(),
      this._supportsVolume ? this.getVolume() : Promise.resolve(0),
      this._supportsVolume ? this.getMute() : Promise.resolve(false),
    ]);

    this._currentState = transport.state;
    this._currentVolume = volume;
    this._currentMuted = muted;

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

  // ============================================================================
  // Playback Control
  // ============================================================================

  /**
   * Set media URI to play
   */
  public async setAVTransportURI(uri: string, metadata?: string): Promise<void> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    const meta = metadata || this.soapClient.generateDidlMetadata('Media', uri);
    await this.soapClient.setAVTransportURI(this.avTransportUrl, uri, meta);
    this.emit('media:loaded', { uri });
  }

  /**
   * Play current media
   */
  public async play(uri?: string, metadata?: string): Promise<void> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    if (uri) {
      await this.setAVTransportURI(uri, metadata);
    }

    await this.soapClient.play(this.avTransportUrl);
    this._currentState = 'PLAYING';
    this.emit('playback:started');
  }

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

    await this.soapClient.pause(this.avTransportUrl);
    this._currentState = 'PAUSED_PLAYBACK';
    this.emit('playback:paused');
  }

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

    await this.soapClient.stop(this.avTransportUrl);
    this._currentState = 'STOPPED';
    this.emit('playback:stopped');
  }

  /**
   * Seek to position
   */
  public async seek(seconds: number): Promise<void> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    const target = this.soapClient.secondsToDuration(seconds);
    await this.soapClient.seek(this.avTransportUrl, target, 'REL_TIME');
    this.emit('playback:seeked', { position: seconds });
  }

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

    await this.soapClient.next(this.avTransportUrl);
    this.emit('playback:next');
  }

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

    await this.soapClient.previous(this.avTransportUrl);
    this.emit('playback:previous');
  }

  // ============================================================================
  // Volume Control
  // ============================================================================

  /**
   * Get volume level
   */
  public async getVolume(): Promise<number> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    return this.soapClient.getVolume(this.renderingControlUrl);
  }

  /**
   * Set volume level
   */
  public async setVolume(level: number): Promise<void> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    await this.soapClient.setVolume(this.renderingControlUrl, level);
    this._currentVolume = level;
    this.emit('volume:changed', { volume: level });
  }

  /**
   * Get mute state
   */
  public async getMute(): Promise<boolean> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    return this.soapClient.getMute(this.renderingControlUrl);
  }

  /**
   * Set mute state
   */
  public async setMute(muted: boolean): Promise<void> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    await this.soapClient.setMute(this.renderingControlUrl, muted);
    this._currentMuted = muted;
    this.emit('mute:changed', { muted });
  }

  /**
   * Toggle mute
   */
  public async toggleMute(): Promise<boolean> {
    const newMuted = !this._currentMuted;
    await this.setMute(newMuted);
    return newMuted;
  }

  // ============================================================================
  // Status Information
  // ============================================================================

  /**
   * Get transport info
   */
  public async getTransportInfo(): Promise<IDlnaTransportInfo> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    return this.soapClient.getTransportInfo(this.avTransportUrl);
  }

  /**
   * Get position info
   */
  public async getPositionInfo(): Promise<IDlnaPositionInfo> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    return this.soapClient.getPositionInfo(this.avTransportUrl);
  }

  /**
   * Get media info
   */
  public async getMediaInfo(): Promise<IDlnaMediaInfo> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    return this.soapClient.getMediaInfo(this.avTransportUrl);
  }

  /**
   * Get full playback state
   */
  public async getPlaybackState(): Promise<IDlnaPlaybackState> {
    if (!this.soapClient) {
      throw new Error('Not connected');
    }

    const [transport, position, media, volume, muted] = await Promise.all([
      this.getTransportInfo(),
      this.getPositionInfo(),
      this.getMediaInfo(),
      this._supportsVolume ? this.getVolume() : Promise.resolve(0),
      this._supportsVolume ? this.getMute() : Promise.resolve(false),
    ]);

    // Parse metadata for track info
    const trackMeta = this.parseTrackMetadata(position.trackMetadata);

    return {
      state: transport.state,
      volume,
      muted,
      currentUri: media.currentUri,
      currentTrack: {
        title: trackMeta.title || 'Unknown',
        artist: trackMeta.artist,
        album: trackMeta.album,
        duration: this.soapClient.durationToSeconds(position.trackDuration),
        position: this.soapClient.durationToSeconds(position.relativeTime),
        albumArtUri: trackMeta.albumArtUri,
      },
    };
  }

  /**
   * Parse track metadata from DIDL-Lite
   */
  private parseTrackMetadata(metadata: string): {
    title?: string;
    artist?: string;
    album?: string;
    albumArtUri?: string;
  } {
    if (!metadata) return {};

    const extractTag = (xml: string, tag: string): string | undefined => {
      const regex = new RegExp(`<(?:[^:]*:)?${tag}[^>]*>([^<]*)<\/(?:[^:]*:)?${tag}>`, 'i');
      const match = xml.match(regex);
      return match ? match[1].trim() : undefined;
    };

    return {
      title: extractTag(metadata, 'title'),
      artist: extractTag(metadata, 'creator') || extractTag(metadata, 'artist'),
      album: extractTag(metadata, 'album'),
      albumArtUri: extractTag(metadata, 'albumArtURI'),
    };
  }

  /**
   * Get device info
   */
  public getDeviceInfo(): IDlnaRendererInfo {
    return {
      id: this.id,
      name: this.name,
      type: 'dlna-renderer',
      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,
      supportsVolume: this._supportsVolume,
      supportsSeek: this._supportsSeek,
    };
  }

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

    const desc = ssdpDevice.description;

    // Find AVTransport and RenderingControl URLs
    const avTransport = desc.services.find((s) =>
      s.serviceType.includes('AVTransport')
    );
    const renderingControl = desc.services.find((s) =>
      s.serviceType.includes('RenderingControl')
    );

    if (!avTransport) {
      return null;  // Not a media renderer
    }

    // 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-renderer:${desc.UDN}`,
      name: desc.friendlyName,
      type: 'dlna-renderer',
      address: ssdpDevice.address,
      port: ssdpDevice.port,
      status: 'unknown',
      manufacturer: desc.manufacturer,
      model: desc.modelName,
    };

    return new DlnaRenderer(
      info,
      {
        friendlyName: desc.friendlyName,
        baseUrl: baseUrlStr,
        avTransportUrl: avTransport.controlURL,
        renderingControlUrl: renderingControl?.controlURL,
        modelName: desc.modelName,
        modelNumber: desc.modelNumber,
        udn: desc.UDN,
        iconUrl,
      },
      retryOptions
    );
  }
}