module Wco::Utils

def self.included(base)
  base.extend(ClassMethods)
end

def export
  out = {}
  %w| created_at updated_at |.map do |f|
    out[f] = send(f)
  end
  export_fields.map do |field|
    if field[-3..-1] == '_id'
      out[field] = send(field).to_s
    else
      out[field] = send(field)
    end
  end
  out[:_id] = id.to_s
  out.with_indifferent_access
end

def set_slug
  return if !slug.blank?
  if defined? name
    new_slug = name.downcase.gsub(/[^a-z0-9\s]/i, '').gsub(' ', '-')
  else
    new_slug = '1'
  end
  if self.class.where( slug: new_slug ).first
    loop do
      if new_slug[new_slug.length-1].to_i != 0
        # inrement last digit
        last_digit = new_slug[new_slug.length-1].to_i
        new_slug = "#{new_slug[0...new_slug.length-1]}#{last_digit+1}"
      else
        # add '-1' to the end
        new_slug = "#{new_slug}-1"
      end
      break if !self.class.where( slug: new_slug ).first
    end
  end
  self.slug = new_slug
end