var sort = require('ssb-sort')

module.exports = function (thread) {
  thread = sort(thread)
  var r = thread.reduce(function (acc, data) {
    if(data.value.content.type == 'post')
      acc.replies.push(data)
    else {
      var c = data.value.content
      for(var k in c)
        //if(Object.hasOwnProperty(acc.value, k)) {
          if(Array.isArray(acc.value[k]))
            acc.value[k] = acc.value[k].concat(c[k])
          else if(typeof c[k] == typeof acc.value[k])
            acc.value[k] = c[k]
        //}
    }
    return acc
  }, {
  type: 'gathering',
      creator: thread[0].value.author,
      created: thread[0].value.timestamp,
      value:{
        progenitor: '',
        startDateTime: {epoch: thread[0].value.timestamp, ts: ''},
        title: '',
        location: '',
        description: '',
        image: {},
        mentions: [],
        attendee: []
    },
    replies: []
  })
  r.root = thread[0].key
  r.branch = sort.heads(thread)
  return r
}