linguisticexplorer/Linguistic-Explorer

class Group < ActiveRecord::Base
  include CSVAttributes
  include GroupStats

  PRIVACY = [
    PRIVATE = 'private',
    PUBLIC  = 'public'
  ]
  MAXIMUM_ASSIGNABLE_DEPTH = 1
  DEFAULT_EXAMPLE_KEYS = ["description"]
  DEFAULT_LING_KEYS = ["description"]

  INFO_ATTRIBUTES = %w[privacy depth_maximum ling0_name ling1_name property_name category_name lings_property_name example_name examples_lings_property_name example_fields display_style ling_fields]

  CSV_ATTRIBUTES = %W[ id name privacy depth_maximum ling0_name ling1_name property_name category_name lings_property_name example_name examples_lings_property_name example_fields ]
  def self.csv_attributes
    CSV_ATTRIBUTES
  end

  validates_presence_of     :name
  validates_uniqueness_of   :name
  validates_numericality_of :depth_maximum, :<= => MAXIMUM_ASSIGNABLE_DEPTH
  validates_inclusion_of    :privacy,       :in => PRIVACY

  has_many :examples_lings_properties, :dependent => :destroy
  has_many :lings,                     :dependent => :destroy
  has_many :properties,                :dependent => :destroy
  has_many :lings_properties,          :dependent => :destroy
  has_many :examples,                  :dependent => :destroy
  has_many :categories,                :dependent => :destroy
  has_many :memberships,               :dependent => :destroy
  has_many :members,                   :through => :memberships, :source => :member
  has_many :stored_values,             :dependent => :destroy
  has_many :searches,                  :dependent => :destroy

  scope :public,  where( :privacy => PUBLIC )
  scope :private, where( :privacy => PRIVATE )

  def ling_name_for_depth(depth)
    if depth > depth_maximum
      raise Exception.new "The ling depth requested was too deep for the group."
    else
      ling_names[depth.to_i]
    end
  end

  def ling_names
    has_depth? ? [ling0_name, ling1_name] : [ling0_name]
  end

  def has_depth?
    depth_maximum >= 1
  end

  def depths
    (0..depth_maximum).to_a
  end

  def ling_storable_keys
    (DEFAULT_LING_KEYS + (!ling_fields.blank? ? ling_fields.split(",").collect(&:strip) : [])).uniq
  end

  def example_storable_keys
    (DEFAULT_EXAMPLE_KEYS + (!example_fields.blank? ? example_fields.split(",").collect(&:strip) : [])).uniq
  end

  def private?
    PRIVATE == privacy
  end

  def membership_for(user)
    memberships.where(:member_id => user.id).first
  end

  def description
    # TODO - add to group for display on groups#show
  end

  def info_attribute_names
    INFO_ATTRIBUTES
  end
end