react-tiny-link/src/rules/Default/ScrapDefault.ts

> Convert your links into beautiful previews

import { ReactTinyLinkType } from '../../ReactTinyLinkTypes'
import { isEmpty, getTitleOfDoc, getAttrOfDocElement, fixRelativeUrls, getBaseUrl } from '../utils'

export default async (url, htmlDoc, defaultMedia) => {
  let baseUrl = getBaseUrl(htmlDoc, url)

  const image = [
    getAttrOfDocElement(htmlDoc, 'meta[property="og:logo"]', 'content'),
    getAttrOfDocElement(htmlDoc, 'meta[itemprop="logo"]', 'content'),
    getAttrOfDocElement(htmlDoc, 'img[itemprop="logo"]', 'src'),
    getAttrOfDocElement(htmlDoc, "meta[property='og:image']", 'content'),
    getAttrOfDocElement(htmlDoc, 'img[class*="logo" i]', 'src'),
    getAttrOfDocElement(htmlDoc, 'img[src*="logo" i]', 'src'),
    getAttrOfDocElement(htmlDoc, 'meta[property="og:image:secure_url"]', 'content'),
    getAttrOfDocElement(htmlDoc, 'meta[property="og:image:url"]', 'content'),
    getAttrOfDocElement(htmlDoc, 'meta[property="og:image"]', 'content'),
    getAttrOfDocElement(htmlDoc, 'meta[name="twitter:image:src"]', 'content'),
    getAttrOfDocElement(htmlDoc, 'meta[name="twitter:image"]', 'content'),
    getAttrOfDocElement(htmlDoc, 'meta[itemprop="image"]', 'content'),
  ]
    .filter(i => !isEmpty(i))
    .map(i => fixRelativeUrls(baseUrl, i))

  return {
    title: getTitleOfDoc(htmlDoc),
    content: getAttrOfDocElement(htmlDoc, "meta[name='description']", 'content'),
    url: getAttrOfDocElement(htmlDoc, "meta[property='og:url']", 'content'),
    description: getAttrOfDocElement(htmlDoc, "meta[name='description']", 'content'),
    video: [],
    image: !defaultMedia
      ? image.filter(i => !isEmpty(i)).map(i => fixRelativeUrls(baseUrl, i))
      : [...image, defaultMedia].filter(i => !isEmpty(i)),
    type: ReactTinyLinkType.TYPE_DEFAULT, // MIME Type
  }
}