import { ExtendedDRMConfig, DRMInitResult } from '../types/DRMTypes';

export abstract class BaseDRM {
  protected video: HTMLVideoElement;
  protected config: ExtendedDRMConfig;
  protected debug: boolean;

  constructor(video: HTMLVideoElement, config: ExtendedDRMConfig, debug: boolean = false) {
    this.video = video;
    this.config = config;
    this.debug = debug;
  }

  abstract initialize(): Promise<DRMInitResult>;
  abstract destroy(): Promise<void>;
  abstract getKeySystem(): string;

  getHLSConfig(): Record<string, any> { return {}; }
  getDashProtectionData(): Record<string, any> { return {}; }

  protected log(...args: any[]): void {
    if (this.debug) console.log('[DRM]', ...args);
  }

  protected async requestLicense(url: string, body: ArrayBuffer, headers?: Record<string, string>): Promise<ArrayBuffer> {
    const resp = await fetch(url, {
      method: 'POST',
      headers: { 'Content-Type': 'application/octet-stream', ...(headers || {}) },
      body,
    });
    if (!resp.ok) throw new Error(`License request failed: HTTP ${resp.status}`);
    return resp.arrayBuffer();
  }
}