var pull = require('pull-stream')
var sort = require('ssb-sort')

function linkDest(val) {
  return typeof val === 'string' ? val : val && val.link
}

function reduceAbout(about, msg) {
  var c = msg.value.content
  if (!c) return about
	if (c.name) about.name = c.name.replace(/^@?/, '@')
	if (c.image) about.image = linkDest(c.image)
	return about
}

module.exports = function (sbot, id, cb) {
  var about = {}
  pull(
    sbot.links({
      rel: 'about',
      dest: id,
      values: true,
    }), 
    pull.collect(function (err, msgs) {
      if (err) return cb(err)
      cb(null, sort(msgs).reduce(reduceAbout, {
        name: String(id).substr(0, 10) + '…',
      }))
    })
  )
}