import type { ProtocolConfig } from '@admin/utils/editor/protocol-config'

const ATTR_WHITESPACE_PATTERN =
  '[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]'
const ATTR_WHITESPACE = new RegExp(ATTR_WHITESPACE_PATTERN, 'g')

export function isAllowedUri(uri: string | undefined, protocols?: ProtocolConfig) {
  const allowedProtocols: string[] = [
    'http',
    'https',
    'ftp',
    'ftps',
    'mailto',
    'tel',
    'callto',
    'sms',
    'cid',
    'xmpp'
  ]

  if (protocols) {
    protocols.forEach((protocol) => {
      const nextProtocol = typeof protocol === 'string' ? protocol : protocol.scheme

      if (nextProtocol) {
        allowedProtocols.push(nextProtocol)
      }
    })
  }

  return (
    !uri ||
    uri
      .replace(ATTR_WHITESPACE, '')
      .match(
        new RegExp(
          `^(?:(?:${allowedProtocols.join('|')}):|[^a-z]|[a-z0-9+.-]+(?:[^a-z+.-:]|$))`,
          'i'
        )
      )
  )
}