var Whisper = Whisper || {};

(function () {
  'use strict';

  var destroyer = Backbone.View.extend({
    tagName: 'button',
    className: 'btn btn-square btn-sm destroy',
    events: {
      'click': 'destroy'
    },
    initialize: function() {
      this.$el.html('×');
    },

    destroy: function() {
      this.model.messages().each(function(message) { message.destroy(); });
      this.model.set('active', false);
      this.model.save();
      this.model.trigger('destroy');
    }
  });

  var menu = Backbone.View.extend({
    tagName: 'ul',
    className: 'menu',
    initialize: function() {
      this.$el.html("<li>delete</li>");
    }
  });

  Whisper.ConversationView = Backbone.View.extend({
    tagName: 'li',
    className: 'conversation',

    events: {
      'click': 'toggle',
      'submit form': 'sendMessage'
    },
    initialize: function() {
      this.listenTo(this.model, 'change', this.render); // auto update
      this.listenTo(this.model, 'message', this.addMessage); // auto update
      this.listenTo(this.model, 'destroy', this.remove); // auto update
      this.listenTo(Whisper.Messages, 'reset', this.addAllMessages); // auto update

      this.$el.addClass('closed');
      this.$destroy = (new destroyer({model: this.model})).$el;

      this.$image  = $('<div class="image">');
      this.$name   = $('<span class="name">');
      this.$header = $('<div class="header">').append(this.$image, this.$name);

      this.$button = $('<button class="btn">').append($('<span>').text('Send'));
      this.$input  = $('<input type="text">').attr('autocomplete','off');
      this.$form   = $("<form class=''>").append(this.$input);

      this.$messages    = $('<ul class="messages">');
      this.$collapsable = $('<div class="collapsable">').hide();
      this.$collapsable.append(this.$messages, this.$form);

      this.$el.append(this.$destroy, this.$header, this.$collapsable);
    },

    sendMessage: function(e) {
      if (!this.$input.val().length) { return false; }
      this.model.sendMessage(this.$input.val());
      this.$input.val("");
      e.preventDefault();
    },

    remove: function() {
      this.$el.remove();
    },

    close: function() {
      if (!this.$el.hasClass('closed')) {
        this.$el.addClass('closed').find('.collapsable').slideUp(600);
      }
    },

    open: function(e) {
      if (this.$el.hasClass('closed')) {
        this.$el.removeClass('closed');
        this.$el.find('.collapsable').slideDown(600);
      }
      this.$el.find('input').focus();
    },

    toggle: function() {
      if (this.$el.hasClass('closed')) {
        this.open();
      } else {
        this.close();
      }
    },

    addMessage: function (message) {
      var view = new Whisper.MessageView({ model: message });
      this.$messages.append(view.render().el);
    },

    addAllMessages: function () {
      this.model.messages().each(this.addMessage, this);
      this.render();
    },

    render: function() {
      this.$name.text(this.model.get('name'));
      this.$image.css('background-image: ' + this.model.get('image') + ';');
      return this;
    }
  });
})();