# Geopolitical Helpers
module Geopolitocracy
  extend ActiveSupport::Concern

  included do
    # field :gid,    type: Integer # geonames id

    field :name,    type: String, localize: true
    field :abbr,    type: String
    field :nick,    type: String

    field :souls,   type: Fixnum  # Population

    field :ascii,   type: String
    field :code,    type: String
    field :slug,    type: String  # , default: -> { name }

    field :postal,  type: String  # , default: -> { name }
    field :phone,   type: String  # , default: -> { name }

    alias_method :population, :souls
    alias_method :iso_3166_2, :code

    validates :name, presence: true
    validates :slug, presence: true, uniqueness: true
    validates :code, uniqueness: { allow_nil: true }

    index slug: 1
    index name: 1

    before_validation :ensure_slug

    scope :ordered, -> { order_by(name: 1) }

    def ensure_slug
      self.slug ||= name
    end

    def name=(txt)
      return unless txt
      txt = txt.titleize unless txt =~ /[A-Z][a-z]/
      super txt
    end

    def slug=(txt)
      return unless txt
      self[:slug] = ActiveSupport::Inflector
                    .transliterate(txt).delete('.').gsub(/\W/, '-').downcase
    end

    def to_s
      name || slug
    end

    def self.search(txt, lazy = false)
      key = ActiveSupport::Inflector.transliterate(txt).gsub(/\W/, '-')
      char = lazy ? nil : '$'
      where(slug: /^#{key}#{char}/i)
    end
  end
end