import { DOMParser } from './consts'

export function createDoc(html: string): Document | null {
  if (html.trim() === '') {
    return null
  }

  const doc = DOMParser.parseFromString(html, 'text/html')

  return doc
}

export function makeEntryCacheKey(entry: any): string {
  return `${entry.author}-${entry.permlink}-${entry.last_update}-${entry.updated}`
}

export function extractYtStartTime(url:string):string {
  try {
    const urlObj = new URL(url);
    const params = new URLSearchParams(urlObj.search);
    if(params.has('t')){
      return '' + parseInt(params.get('t')); //parsing is important as sometimes t is famated '123s';
    }else if (params.has('start')){
      return params.get('start');
    } 
  } catch (error) {
    return '';
  }
}