import cheerio from 'cheerio'
const ID_REGEX = /\/profile\/([\w\-.!~*'"(),]+)/g

export default function(content) {
  if (!content) return []
  const $ = cheerio.load(content)
  const urls = $('.mention')
    .map((_, el) => {
      return $(el).attr('href')
    })
    .get()
  const ids = []
  urls.forEach(url => {
    let match
    while ((match = ID_REGEX.exec(url)) != null) {
      ids.push(match[1])
    }
  })
  return ids
}
