class Table
  include SimplyStored::Couch

  property :number, type: Fixnum, default: 1
  property :position_x, type: Float
  property :position_y, type: Float

  belongs_to :supplier
  belongs_to :section
  has_many :lists

  attr_protected :supplier_id

  validates :supplier_id, presence: true
  #validates :list_id, presence: true
  validates :number, numericality: {greater_than: 0}
  validates_uniqueness_of :number

  view :active_lists, type: :custom, map_function: %|function(doc){
    if(doc.ruby_class == 'List' && doc.state == 'active'){
      emit(doc.table_id, 1); 
    }
  }|, reduce_function: '_sum'

  def occupied?
    return @is_occupied if instance_variable_defined?(:'@is_occupied')
    @is_occupied = !self.class.database.view(self.class.active_lists(key: id, reduce: true)).zero?
  end

  def name
    number
  end

end