var h = require('hyperscript')
var ref = require('ssb-ref')
var ssbKeys = require('ssb-keys')
var sbot = require('./scuttlebot')
var config = require('./config')()
var markdown = require('ssb-markdown')
var id = require('./keys').id
var avatar = require('./avatar')
var human = require('human-time')

module.exports.timestamp = function (msg, edited) {
  var timestamp = h('span.right', h('a', {href: '#' + msg.key}, human(new Date(msg.value.timestamp))))
  return timestamp
}


module.exports.header = function (msg) {
  var header = h('div.header')

  header.appendChild(h('span.avatar',
      h('a', {href: '#' + msg.value.author},
        h('span.avatar--small', avatar.cachedImage(msg.value.author)),
        avatar.cachedName(msg.value.author)
      )
    )
  )

  header.appendChild(exports.timestamp(msg))

  return header
}

module.exports.mini = function (msg, content) {
  var mini = h('div.mini')

  mini.appendChild(
    h('span.avatar',
      h('a', {href: '#' + msg.value.author},
        h('span.avatar--small', avatar.cachedImage(msg.value.author)),
        avatar.cachedName(msg.value.author)
      )
    )
  )
  var lock = h('span.right', h('img.emoji', {src: config.emojiUrl + 'lock.png'}))


  mini.appendChild(h('span', content))
  mini.appendChild(exports.timestamp(msg))

  if (msg.value.content.recps) {
    mini.appendChild(lock)
  }

  if (typeof msg.value.content === 'string') {
    mini.appendChild(lock)
  }

  return mini
}



module.exports.box = function (content) {
  return ssbKeys.box(content, content.recps.map(function (e) {
    return ref.isFeed(e) ? e : e.link
  }))
}

module.exports.publish = function (content, cb) {
  if(content.recps)
    content = exports.box(content)
  sbot.publish(content, function (err, msg) {
    if(err) throw err
    console.log('Published!', msg)
    if(cb) cb(err, msg)
  })
}

module.exports.messageName = function (id, cb) {
  // gets the first few characters of a message, for message-link
  function title (s) {
    var m = /^\n*([^\n]{0,40})/.exec(s)
    return m && (m[1].length == 40 ? m[1]+'...' : m[1])
  }

  sbot.get(id, function (err, value) {
    if(err && err.name == 'NotFoundError')
      return cb(null, id.substring(0, 10)+'...(missing)')
    if(value.content.type === 'post' && 'string' === typeof value.content.text)
      return cb(null, title(value.content.text))
    else if('string' === typeof value.content.text)
      return cb(null, value.content.type + ':'+title(value.content.text))
    else
      return cb(null, id.substring(0, 10)+'...')
  })
}

var messageName = exports.messageName

module.exports.messageLink = function (id) {
  if (ref.isMsg(id)) {
    var link = h('a', {href: '#'+id}, id.substring(0, 10)+'...')
    messageName(id, function (err, name) {
      if(err) console.error(err)
      else link.textContent = name
    })
  } else {
    var link = id
  }
  return link
}

module.exports.rawJSON = function (obj) {
  return JSON.stringify(obj, null, 2)
    .split(/([%@&][a-zA-Z0-9\/\+]{43}=*\.[\w]+)/)
    .map(function (e) {
      if(ref.isMsg(e) || ref.isFeed(e) || ref.isBlob(e)) {
        return h('a', {href: '#' + e}, e)
      }
      return e
    })
}

module.exports.markdown = function (msg, md) {
  return {innerHTML: markdown.block(msg, {toUrl: function (url, image) {
    if(url[0] == '%' || url[0] == '@' || url[0] == '#') return '#' + url
    if(url[0] !== '&') return url
    //if(url[0] == '&') return config.blobsUrl + url
    //if(!image) return url
    return config.blobsUrl + url
  }})}
}