text: const ghostBookshelf = require('./base');
  
  let Label, Labels;
  
  Label = ghostBookshelf.Model.extend({
  
      tableName: 'labels',
  
      emitChange: function emitChange(event, options) {
          const eventToTrigger = 'label' + '.' + event;
          ghostBookshelf.Model.prototype.emitChange.bind(this)(this, eventToTrigger, options);
      },
  
      onCreated: function onCreated(model, attrs, options) {
          ghostBookshelf.Model.prototype.onCreated.apply(this, arguments);
  
          model.emitChange('added', options);
      },
  
      onUpdated: function onUpdated(model, attrs, options) {
          ghostBookshelf.Model.prototype.onUpdated.apply(this, arguments);
  
          model.emitChange('edited', options);
      },
  
      onDestroyed: function onDestroyed(model, options) {
          ghostBookshelf.Model.prototype.onDestroyed.apply(this, arguments);
  
          model.emitChange('deleted', options);
      },
  
      onSaving: function onSaving(newLabel, attr, options) {
          var self = this;
  
          ghostBookshelf.Model.prototype.onSaving.apply(this, arguments);
          // Make sure name is trimmed of extra spaces
          let name = this.get('name') && this.get('name').trim();
          this.set('name', name);
          if (this.hasChanged('slug') || (!this.get('slug') && this.get('name'))) {
              // Pass the new slug through the generator to strip illegal characters, detect duplicates
              return ghostBookshelf.Model.generateSlug(Label, this.get('slug') || this.get('name'),
                  {transacting: options.transacting})
                  .then(function then(slug) {
                      self.set({slug: slug});
                  });
          }
      },
  
      members: function members() {
          return this.belongsToMany('Member', 'members_labels', 'label_id', 'member_id');
      },
  
      toJSON: function toJSON(unfilteredOptions) {
          const options = Label.filterOptions(unfilteredOptions, 'toJSON');
          const attrs = ghostBookshelf.Model.prototype.toJSON.call(this, options);
  
          return attrs;
      },
  
      getAction(event, options) {
          const actor = this.getActor(options);
  
          // @NOTE: we ignore internal updates (`options.context.internal`) for now
          if (!actor) {
              return;
          }
  
          // @TODO: implement context
          return {
              event: event,
              resource_id: this.id || this.previous('id'),
              resource_type: 'label',
              actor_id: actor.id,
              actor_type: actor.type
          };
      }
  }, {
      orderDefaultOptions: function orderDefaultOptions() {
          return {
              name: 'ASC',
              created_at: 'DESC'
          };
      },
  
      permittedOptions: function permittedOptions(methodName) {
          var options = ghostBookshelf.Model.permittedOptions.call(this, methodName),
  
              // whitelists for the `options` hash argument on methods, by method name.
              // these are the only options that can be passed to Bookshelf / Knex.
              validOptions = {
                  findAll: ['columns'],
                  findOne: ['columns'],
                  destroy: ['destroyAll']
              };
  
          if (validOptions[methodName]) {
              options = options.concat(validOptions[methodName]);
          }
  
          return options;
      },
  
      destroy: function destroy(unfilteredOptions) {
          var options = this.filterOptions(unfilteredOptions, 'destroy', {extraAllowedProperties: ['id']});
          options.withRelated = ['members'];
  
          return this.forge({id: options.id})
              .fetch(options)
              .then(function destroyLabelsAndMember(label) {
                  if (!label) {
                      return Promise.reject();
                  }
  
                  return label.related('members')
                      .detach(null, options)
                      .then(function destroyLabels() {
                          return label.destroy(options);
                      });
              });
      }
  });
  
  Labels = ghostBookshelf.Collection.extend({
      model: Label
  });
  
  module.exports = {
      Label: ghostBookshelf.model('Label', Label),
      Labels: ghostBookshelf.collection('Labels', Labels)
  };
  