Strophe.addNamespace('CAPS', 'http://jabber.org/protocol/caps')
Strophe.addNamespace('CARBONS', 'urn:xmpp:carbons:2')
Strophe.addNamespace('CHATSTATES', 'http://jabber.org/protocol/chatstates')
Strophe.addNamespace('DELAY', 'urn:xmpp:delay')
Strophe.addNamespace('FORWARD', 'urn:xmpp:forward:0')
Strophe.addNamespace('LAST', 'jabber:iq:last')
Strophe.addNamespace('PRIVATE', 'jabber:iq:private')
Strophe.addNamespace('TIME', 'urn:xmpp:time')
window.contacts = new Tram.Contacts()
window.contactsApp = new Tram.ContactsApp(el: $('[data-app="contacts"]'), collection: contacts)
window.calls = new Tram.Calls()
window.callsApp = new Tram.CallsApp(el: $('[data-app="calls"]'), collection: calls)
window.settings = new Tram.ClientSettings()
window.serverInfo = new Tram.ServerInfo()
window.clientState = new Tram.ClientState()
window.faviconApp = new Tram.FaviconApp(model: clientState)
window.sidebarApp = new Tram.SidebarApp(el: $('[data-app="sidebar"]'), model: clientState)
window.progressApp = new Tram.ProgressApp(el: $('[data-app="progress"]'), model: clientState)
window.chats = {}
window.capscache = {}
window.vcardcache = {}
contacts.on 'change:show', (model) ->
  if model.get('type') is 'self'
    clientState.set('show', model.get('show'))
contacts.on 'change:chatstate/self', (model, cs) ->
  if settings.get('chatstates') and Strophe.NS.CHATSTATES in (model?.get('features') ? [])
    msg = $msg(to: model.get('jid'), from: X.conn.jid, type: 'chat')
      .c(cs, xmlns: Strophe.NS.CHATSTATES)
    X.conn.send(msg.tree())
contacts.on 'change:presence', (model) ->
  dupes = contacts.where(bjid: model.get('bjid'))
  offline = (c for c in dupes when c.get('presence') is 'unavailable')
  if offline.length is dupes.length
    offline = (c for c in offline when c.get('jid') isnt model.get('jid'))
  contacts.remove(offline)
clientState.on 'action/show', (show, status) ->
  X.sendPresence(show: show, status: status, priority: 1)
clientState.on 'action/disconnect', ->
  X.disconnect('Logged out')
clientState.on 'change:contact', ->
  clientState.previous('contact')?.set('chatstate/self', 'inactive')
  contact = clientState.get('contact')
  contact?.set('chatstate/self', 'active')
  $logs = $('[data-app="logs"]')
  $logs.children().detach()
  $logs.append(contact.chat.render().el)
  $('[data-form="send"]').toggleClass('uk-hidden', not contact?)
onConnected = ->
  X.conn.addHandler(onPresence, null, 'presence')
  X.conn.addHandler(onChatMessage, null, 'message', 'chat')
  X.conn.addHandler(onChatState, Strophe.NS.CHATSTATES, 'message')
  X.conn.addHandler(onWebRTC, Tram.NS.WEBRTC, 'message', 'chat')
  X.conn.addHandler(onGetLast, Strophe.NS.LAST, 'iq', 'get')
  X.conn.addHandler(onGetTime, Strophe.NS.TIME, 'iq', 'get')
  X.conn.addHandler(onGetVersion, Strophe.NS.VERSION, 'iq', 'get')
  X.conn.ping.addPingHandler(onPing)
  X.conn.disco.addIdentity('client', 'web', Tram.info.client)
  X.conn.disco.addFeature(Strophe.NS.CAPS)
  X.conn.disco.addFeature(Strophe.NS.CARBONS)
  X.conn.disco.addFeature(Strophe.NS.CHATSTATES)
  X.conn.disco.addFeature(Strophe.NS.DISCO_INFO)
  X.conn.disco.addFeature(Strophe.NS.LAST)
  X.conn.disco.addFeature(Strophe.NS.PING)
  X.conn.disco.addFeature(Strophe.NS.PRIVATE)
  X.conn.disco.addFeature(Strophe.NS.TIME)
  X.conn.disco.addFeature(Strophe.NS.VERSION)
  X.conn.disco.addFeature(Strophe.NS.XHTML_IM)
  X.conn.disco.addFeature(Tram.NS.WEBRTC)
  dSettings = $.Deferred()
  dCaps = $.Deferred()
  dVersion = $.Deferred()
  dInfo = $.Deferred()
  dCarbons = $.Deferred()
  dRoster = $.Deferred()
  loadSettings(dSettings.resolve, dSettings.reject)
  loadCapsCache(dCaps.resolve, dCaps.reject)
  getServerVersion(dVersion.resolve, dVersion.reject)
  X.conn.roster.get(dRoster.resolve)
  $.when(dCaps).always ->
    getServerInfo(dInfo.resolve, dInfo.reject)
  $.when(dInfo).always ->
    if Strophe.NS.CARBONS in serverInfo.get('features')
      okcb = ->
        serverInfo.set('carbons', true)
        dCarbons.resolve()
      failcb = (stanza) ->
        serverInfo.set('carbons', false)
        dCarbons.reject()
      enableCarbons(okcb, failcb)
    else
      dCarbons.reject()
  $.when(dSettings, dVersion, dInfo, dRoster, dCarbons).always ->
    X.sendPresence(status: 'Online', priority: 1)
onDisconnected = ->
  location.reload()
getStamp = (stanza) ->
  delay = stanza.getElementsByTagNameNS(Strophe.NS.DELAY, 'delay')[0]
  return new Date(delay?.getAttribute('stamp') ? Date.now())
getText = (el) ->
  if not el
    return null
  str = ''
  if el.childNodes.length is 0 and el.nodeType is Strophe.ElementType.TEXT
    str += el.nodeValue
  for node in el.childNodes
    if node.nodeType is Strophe.ElementType.TEXT
      str += node.nodeValue
  return str
getServerVersion = (doneCallback, failCallback) ->
  iq = $iq(type: 'get', id: X.conn.getUniqueId('version'), to: X.conn.domain)
    .c('query', xmlns: Strophe.NS.VERSION)
  okcb = (stanza) ->
    serverInfo.set
      name: getText(stanza.getElementsByTagName('name')[0])
      version: getText(stanza.getElementsByTagName('version')[0])
      os: getText(stanza.getElementsByTagName('os')[0])
    doneCallback?()
  failcb = (stanza) ->
    console.error("couldn't get version", stanza?.innerHTML)
    failCallback?()
  X.conn.sendIQ(iq.tree(), okcb, failcb, Tram.config.iqTimeout)
enableCarbons = (doneCallback, failCallback) ->
  iq = $iq(type: 'set', id: X.conn.getUniqueId('enable'))
    .c('enable', xmlns: Strophe.NS.CARBONS)
  okcb = (stanza) ->
    serverInfo.set('carbons', true)
    doneCallback?()
  failcb = (stanza) ->
    serverInfo.set('carbons', false)
    failCallback?()
  X.conn.sendIQ(iq.tree(), okcb, failcb, Tram.config.iqTimeout)
loadSettings = (doneCallback, failCallback) ->
  iq = $iq(type: 'get', id: X.conn.getUniqueId('settings'))
    .c('query', xmlns: Strophe.NS.PRIVATE)
    .c('settings', xmlns: Tram.NS.PRIVATE)
  okcb = (stanza) ->
    el = stanza.getElementsByTagName('settings')[0]
    if el?.firstChild?
      data = JSON.parse(el.firstChild.nodeValue)
      settings.set(data)
    doneCallback?()
  failcb = (stanza) ->
    console.error("couldn't load settings", stanza)
    failCallback?()
  X.conn.sendIQ(iq.tree(), okcb, failcb, Tram.config.iqTimeout)
_saveSettings = (doneCallback, failCallback) ->
  payload = JSON.stringify(settings.toJSON())
  iq = $iq(type: 'set', id: X.conn.getUniqueId('settings'))
    .c('query', xmlns: Strophe.NS.PRIVATE)
    .c('settings', xmlns: Tram.NS.PRIVATE).t(payload)
  okcb = (stanza) ->
    doneCallback?()
  failcb = (stanza) ->
    console.error("couldn't save settings", stanza)
    failCallback?()
  X.conn.sendIQ(iq.tree(), okcb, failcb, Tram.config.iqTimeout)
saveSettings = _(_saveSettings).debounce(1000)
loadCapsCache = (doneCallback, failCallback) ->
  iq = $iq(type: 'get', id: X.conn.getUniqueId('capscache'))
    .c('query', xmlns: Strophe.NS.PRIVATE)
    .c('capscache', xmlns: Tram.NS.PRIVATE)
  okcb = (stanza) ->
    el = stanza.getElementsByTagName('capscache')[0]
    if el?.firstChild?
      data = JSON.parse(el.firstChild.nodeValue)
      _(capscache).defaults(data)
    doneCallback?()
  failcb = (stanza) ->
    console.error("couldn't load caps cache", stanza)
    failCallback?()
  X.conn.sendIQ(iq.tree(), okcb, failcb, Tram.config.iqTimeout)
_saveCapsCache = ->
  payload = JSON.stringify(capscache)
  iq = $iq(type: 'set', id: X.conn.getUniqueId('capscache'))
    .c('query', xmlns: Strophe.NS.PRIVATE)
    .c('capscache', xmlns: Tram.NS.PRIVATE).t(payload)
  okcb = (stanza) ->
    console.debug('caps cache saved', stanza)
  failcb = (stanza) ->
    console.error("couldn't save caps cache", stanza)
  X.conn.sendIQ(iq.tree(), okcb, failcb, Tram.config.iqTimeout)
saveCapsCache = _(_saveCapsCache).debounce(1000)
onGetLast = (stanza) ->
  id = stanza.getAttribute('id')
  from = stanza.getAttribute('from')
  iq = $iq(to: from, type: 'result', id: id)
    .c('query', xmlns: Strophe.NS.LAST, seconds: '0')
  X.conn.send(iq.tree())
  return true
onGetTime = (stanza) ->
  now = moment()
  id = stanza.getAttribute('id')
  from = stanza.getAttribute('from')
  iq = $iq(to: from, type: 'result', id: id)
    .c('time', xmlns: Strophe.NS.TIME)
    .c('tzo').t(now.format('Z')).up()
    .c('utc').t(now.toISOString())
  X.conn.send(iq.tree())
  return true
onGetVersion = (stanza) ->
  id = stanza.getAttribute('id')
  from = stanza.getAttribute('from')
  iq = $iq(to: from, type: 'result', id: id)
    .c('query', xmlns: Strophe.NS.VERSION)
    .c('name').t(Tram.info.client).up()
    .c('version').t(Tram.info.version)
  X.conn.send(iq.tree())
  return true
onPing = (stanza) ->
  X.conn.ping.pong(stanza)
  return true
getChat = (jid) ->
  chats[jid] ?= new Tram.LogApp(collection: new Tram.Messages())
getContact = (from, node, ver) ->
  contact = contacts.get(from)
  if contact?
    return contact
  self = from is X.conn.jid
  if self
    contacts.each (model) ->
      model.set('type', 'contact')
  bjid = Strophe.getBareJidFromJid(from)
  contact = contacts.add
    jid: from
    bjid: bjid
    type: if self then 'self' else 'contact'
  contact.chat = getChat(bjid)
  contact.on 'action/chat', ->
    clientState.set('contact', contact)
  contact.on 'action/authorize', ->
    X.conn.roster.authorize(contact.get('bjid'))
  contact.on 'action/unauthorize', ->
    X.conn.roster.unauthorize(contact.get('bjid'))
    contacts.remove(contact)
  contact.on 'action/remove', ->
    if X.conn.roster.findItem(contact.get('bjid'))
      X.conn.roster.remove contact.get('bjid'), ->
        contacts.remove(contact)
    else
      contacts.remove(contact)
  contact.w = new Tram.WebRTCInterface(contact)
  contact.on 'action/call', (media) ->
    contact.set('callstate', 'outgoing')
    contact.w.init(true, audio: 'a' in media, video: 'v' in media)
  contact.on 'action/accept', (media) ->
    contact.w.init(false, audio: 'a' in media, video: 'v' in media)
  contact.on 'action/decline action/hangup', ->
    contact.w.sendIntent('terminate')
    contact.w.disconnect()
    contact.unset('callstate')
  getContactProfile(contact)
  if Strophe.getResourceFromJid(from)?
    getClientInfo(contact, node, ver)
  return contact
getContactProfile = (contact) ->
  bjid = contact.get('bjid')
  if bjid is Strophe.getBareJidFromJid(X.conn.jid)
    bjid = null
  if vcardcache[bjid]?
    data = vcardcache[bjid]
    contact.set(data)
    if not data.avatar?
      contact.unset('avatar')
    return
  okcb = (stanza) ->
    vcard = stanza.getElementsByTagNameNS(Strophe.NS.VCARD, 'vCard')[0]
    if not vcard?
      console.warn("no vcard in response", stanza)
      return
    data =
      nickname: getText(vcard.querySelector('NICKNAME'))
      fullname: getText(vcard.querySelector('FN'))
      firstname: getText(vcard.querySelector('N > GIVEN'))
      lastname: getText(vcard.querySelector('N > FAMILY'))
    avatar =
      mime: getText(vcard.querySelector('PHOTO > TYPE'))
      data: getText(vcard.querySelector('PHOTO > BINVAL'))
    if avatar.mime and avatar.data
      data.avatar = avatar
    vcardcache[bjid] = data
    contact.set(data)
    if not data.avatar?
      contact.unset('avatar')
  failcb = (stanza) ->
    console.warn("couldn't get vcard", stanza)
  X.conn.vcard.get(okcb, bjid, failcb)
getClientInfo = (contact, node, ver) ->
  jid = contact.get('jid')
  if node? and ver?
    clientId = "#{ node }##{ ver }"
    if capscache[clientId]?
      return contact.set('features', capscache[clientId])
  okcb = (stanza) ->
    features = (el.getAttribute('var') for el in stanza.getElementsByTagName('feature'))
    contact.set('features', features)
    if clientId?
      capscache[clientId] = features
      saveCapsCache()
  failcb = (stanza) ->
    console.warn("couldn't get client info", stanza)
  X.conn.disco.info(jid, clientId, okcb, failcb, Tram.config.iqTimeout)
getServerInfo = (doneCallback, failCallback) ->
  caps = X.conn.features.getElementsByTagNameNS(Strophe.NS.CAPS, 'c')[0]
  node = caps?.getAttribute('node')
  ver = caps?.getAttribute('ver')
  if node? and ver?
    serverId = "#{ node }##{ ver }"
    if capscache[serverId]?
      serverInfo.set('features', capscache[serverId])
      doneCallback?()
      return
  okcb = (stanza) ->
    features = (el.getAttribute('var') for el in stanza.getElementsByTagName('feature'))
    serverInfo.set('features', features)
    capscache[serverId] = features
    doneCallback?()
  failcb = (stanza) ->
    console.warn("couldn't get server info", stanza)
    failCallback?()
  X.conn.disco.info(X.conn.domain, serverId, okcb, failcb, Tram.config.iqTimeout)
onPresence = (stanza) ->
  type = stanza.getAttribute('type') ? 'available'
  from = stanza.getAttribute('from')
  switch type
    when 'unsubscribe'
      # Upon receiving the presence stanza of type "unsubscribe", the contact
      # SHOULD acknowledge receipt of that subscription state notification
      # through either "affirming" it by sending a presence stanza of type
      # "unsubscribed" to the user or ...
      X.conn.roster.unauthorize(from)
      return true
    when 'subscribed'
      # Upon receiving the presence stanza of type "subscribed", the contact
      # SHOULD acknowledge receipt of that subscription state notification
      # through either "affirming" it by sending a presence stanza of type
      # "subscribe" to the user or ...
      X.conn.roster.subscribe(from)
      return true
    when 'unsubscribed'
      # Upon receiving the presence stanza of type "unsubscribed", the user
      # SHOULD acknowledge receipt of that subscription state notification
      # through either "affirming" it by sending a presence stanza of type
      # "unsubscribe" to the contact or ...
      X.conn.roster.unsubscribe(from)
      return true
    when 'error'
      console.error('got <presence type="error">', stanza)
      return true
  caps = stanza.getElementsByTagNameNS(Strophe.NS.CAPS, 'c')[0]
  ver = caps?.getAttribute('ver')
  node = caps?.getAttribute('node')
  contact = getContact(from, node, ver)
  show = getText(stanza.getElementsByTagName('show')[0])
  status = getText(stanza.getElementsByTagName('status')[0])
  priority = getText(stanza.getElementsByTagName('priority')[0])
  switch type
    when 'available'
      show ?= 'online'
      priority ?= '0'
    when 'unavailable'
      show = 'offline'
      priority = '0'
  contact.set
    presence: type
    show: show
    status: status
    priority: priority
  if type is 'unavailable'
    contact.w.disconnect()
  if type in ['available', 'unavailable'] and contact.get('type') isnt 'self'
    stamp = getStamp(stanza)
    contact.chat.collection.add
      id: stanza.getAttribute('id')
      type: 'presence'
      cls: 'presence'
      from: from
      stamp: stamp
      contact: contact
      presence: type
      show: show
      status: status
      priority: priority
      text: status ? "is now #{ show }"
  return true
onChatMessage = (stanza) ->
  sent = stanza.getElementsByTagNameNS(Strophe.NS.CARBONS, 'sent')[0]
  received = stanza.getElementsByTagNameNS(Strophe.NS.CARBONS, 'received')[0]
  if sent?
    forwarded = sent.getElementsByTagNameNS(Strophe.NS.FORWARD, 'forwarded')[0]
  if received?
    forwarded = received.getElementsByTagNameNS(Strophe.NS.FORWARD, 'forwarded')[0]
  if forwarded?
    message = forwarded.getElementsByTagName('message')[0]
  else
    message = stanza
  text = getText(message.getElementsByTagName('body')[0])
  xhtml = message.getElementsByTagNameNS(Strophe.NS.XHTML_IM, 'html')[0]
  if not (text or xhtml)
    return true
  to = message.getAttribute('to')
  from = message.getAttribute('from')
  type = message.getAttribute('type')
  cls = type
  stamp = getStamp(stanza)
  contact = getContact(from)
  if xhtml? and X.conn.roster.findItem(contact.get('bjid'))
    body = xhtml.getElementsByTagNameNS(Strophe.NS.XHTML, 'body')[0]
    html = Strophe.createHtml(body).innerHTML
  if forwarded? and contact.get('bjid') is Strophe.getBareJidFromJid(X.conn.jid)
    chat = getContact(to).chat
    cls = 'self'
  else
    chat = contact.chat
  chat.collection.add
    id: message.getAttribute('id')
    type: type
    cls: cls
    to: to
    from: from
    stamp: stamp
    contact: contact
    thread: getText(message.getElementsByTagName('thread')[0])
    subject: getText(message.getElementsByTagName('subject')[0])
    text: text
    html: html
  return true
onChatState = (stanza) ->
  from = stanza.getAttribute('from')
  contact = getContact(from)
  elements = stanza.getElementsByTagNameNS(Strophe.NS.CHATSTATES, '*')
  if elements[0]?
    contact.set('chatstate', elements[0].tagName.toLowerCase())
  return true
onWebRTC = (stanza) ->
  from = stanza.getAttribute('from')
  contact = getContact(from)
  intent = stanza.getElementsByTagNameNS(Tram.NS.WEBRTC, 'intent')[0]
  payload = stanza.getElementsByTagNameNS(Tram.NS.WEBRTC, 'payload')[0]
  stamp = getStamp(stanza)
  if intent?
    switch getText(intent)
      when 'initiate'
        contact.set('callstate', 'incoming')
        contact.chat.collection.add
          id: stanza.getAttribute('id')
          type: 'call'
          cls: 'call'
          from: from
          stamp: stamp
          contact: contact
          text: 'incoming call'
      when 'terminate'
        contact.w.disconnect()
        contact.unset('callstate')
  if payload?
    contact.w.onPayload(stanza)
  return true
window.X = new Tram.XMPPInterface()
X.on 'connecting', ->
  connData.unset('auth-errors')
X.on 'authfail', ->
  connData.set('auth-errors', ['Invalid username or password.'])
X.on 'disconnected', ->
  $('[data-step="login"]').removeClass('uk-hidden')
  $('[data-step="main"]').addClass('uk-hidden')
  onDisconnected()
X.on 'connected attached', ->
  $('[data-step="login"]').addClass('uk-hidden')
  $('[data-step="main"]').removeClass('uk-hidden')
  onConnected()
X.on 'status', (status) ->
  switch status
    when Strophe.Status.CONNECTING
      clientState.set('progress', 0)
    when Strophe.Status.CONNECTED
      clientState.set('progress', 100)
    else
      clientState.unset('progress')
$(window).on 'beforeunload unload', ->
  X.disconnect('Window closed')
class ConnectionData extends Backbone.Model
  defaults:
    username: ''
    password: ''
  validate: (attrs, options) ->
    @unset('username-errors')
    @unset('password-errors')
    @unset('auth-errors')
    if (attrs.username ? '').trim() is ''
      @set('username-errors', ['This field is required.'])
    if (attrs.password ? '') is ''
      @set('password-errors', ['This field is required.'])
    return @has('username-errors') or @has('password-errors')
window.connData = new ConnectionData()
connectfn = ->
  if connData.isValid()
    X.connect(connData.get('username').trim(), connData.get('password'))
$form = $('[data-form="connect"]')
window.connRivet = rivets.bind($form, data: connData, connect: connectfn)
$form.find('input').on 'keydown', (e) ->
  if (not @required or @value isnt '') and e.keyCode is 13
    e.preventDefault()
    index = $form.find('input').index(@)
    $next = $form.find('input').eq(index + 1)
    if $next.length isnt 0
      $next.focus()
    else
      $form.find('button').trigger('click')
sendMessage = ->
  text = $('#msg').val()
  if text isnt '' and clientState.has('contact')
    contact = clientState.get('contact')
    msg = $msg(to: contact.get('jid'), from: X.conn.jid, type: 'chat').c('body').t(text).up()
    if settings.get('chatstates') and Strophe.NS.CHATSTATES in (contact.get('features') ? [])
      msg.c('active', xmlns: Strophe.NS.CHATSTATES)
      contact.set('chatstate/self', 'active', silent: true)
    X.conn.send(msg.tree())
    contact.chat.collection.add
      type: 'chat'
      cls: 'self'
      from: X.conn.jid
      to: contact.get('jid')
      stamp: new Date()
      contact: contacts.findWhere(type: 'self')
      text: text
    $('#msg').val('')
$('[data-send-button]').on 'click', sendMessage
$('#msg').on 'keypress', (e) ->
  if e.keyCode is 13
    sendMessage()
  else
    clientState.get('contact')?.set('chatstate/self', 'composing')
$('#msg').on 'blur', ->
  if clientState.get('contact')?.get('chatstate/self') is 'composing'
    clientState.get('contact')?.set('chatstate/self', 'paused')
$('[data-add-button]').on 'click', ->
  jid = $('#new-contact').val().trim()
  if jid is ''
    return
  if '@' not in jid
    jid = "#{ jid }@#{ Tram.config.domain }"
  $('#new-contact').val('')
  X.conn.roster.add jid, null, [], ->
    X.conn.roster.subscribe(jid, 'I want to chat', null)
$('#new-contact').on 'keypress', (e) ->
  if e.keyCode is 13
    $('[data-add-button]').trigger('click')
$('[data-unregister-button]').on 'click', ->
  X.unregister()
$('#settings-modal').one 'show.uk.modal', ->
  window.settingsRivet = rivets.bind($('[data-app="settings"]'), settings: settings)
  window.serverRivet = rivets.bind($('[data-app="server-info"]'), server: serverInfo)
settings.on('change', saveSettings)
$('#profile-modal').one 'show.uk.modal', ->
  window.profileRivet = rivets.bind($('[data-app="profile"]'), contact: contacts.get(X.conn.jid))
window.setInterval ->
  $('time[datetime]').each ->
    $this = $(this)
    $this.text(moment($this.attr('datetime')).fromNow())
, 15 * 1000