pleroma-fe/src/services/status_parser/status_parser.js

export const muteFilterHits = (muteFilters, status) => {
  const statusText = status.text.toLowerCase()
  const statusSummary = status.summary.toLowerCase()
  const replyToUser = status.in_reply_to_screen_name?.toLowerCase()
  const poster = status.user.screen_name.toLowerCase()
  const mentions = (status.attentions || []).map(att => att.screen_name.toLowerCase())


  return muteFilters.toSorted((a,b) => b.order - a.order).map(filter => {
    const { hide, expires, name, value, type, enabled} = filter
    if (!enabled) return false
    if (value === '') return false
    if (expires !== null && expires < Date.now()) return false
    switch (type) {
      case 'word': {
        const lowercaseValue = value.toLowerCase()
        if (statusText.toLowerCase().includes(lowercaseValue) || statusSummary.toLowerCase().includes(lowercaseValue)) {
          return { hide, name }
        }
        break
      }
      case 'regexp': {
        try {
          const re = new RegExp(value, 'i')
          if (re.test(statusText) || re.test(statusSummary)) {
            return { hide, name }
          }
          return false
        } catch {
          return false
        }
      }
      case 'user': {
        if (
          poster.includes(value) ||
            replyToUser.includes(value) ||
            mentions.some(mention => mention.includes(value))
        ) {
          return { hide, name }
        }
        break
      }
      case 'user_regexp': {
        try {
          const re = new RegExp(value, 'i')
          if (
            re.test(poster) ||
              re.test(replyToUser) ||
              mentions.some(mention => re.test(mention))
          ) {
            return { hide, name }
          }
          return false
        } catch {
          return false
        }
      }
    }
  }).filter(_ => _)
}