import type { IVideo, ISource } from '.';
import type { PolyURL } from '../utils/url-polyfill';

/**
 * Interface for video extractors - can be implemented by both classes and functions
 */
export interface IVideoExtractor {
  /**
   * The server name of the video provider
   */
  serverName: string;

  /**
   * list of videos available
   */
  sources: IVideo[];

  /**
   * takes video link
   *
   * returns video sources (video links) available
   */
  extract(videoUrl: PolyURL, ...args: any): Promise<IVideo[] | ISource>;
}

/**
 * Abstract class for video extractors - for class-based implementations
 */
abstract class VideoExtractor {
  /**
   * The server name of the video provider
   */
  protected abstract serverName: string;

  /**
   * list of videos available
   */
  protected abstract sources: IVideo[];

  /**
   * takes video link
   *
   * returns video sources (video links) available
   */
  protected abstract extract(videoUrl: URL, ...args: any): Promise<IVideo[] | ISource>;
}

export default VideoExtractor;