geo_ip_city.rb

require 'ostruct'

class GeoIpCity
  DATA = "#{Rails.root}/db/GeoLiteCity.dat"
  
  def locate(ip_to_locate)
    data = api.city(ip_to_locate)

    return if data.nil?

    location               = OpenStruct.new
    location.input         = data[0]
    location.ip            = data[1]
    location.country_code  = data[2]
    location.country_code3 = data[3]
    location.country_name  = data[4]
    location.parent_name   = data[5]
    location.region_code   = data[6]
    location.locality      = data[7]
    location.postal_code   = data[8]
    location.latitude      = data[9]
    location.longitude     = data[10]
    location.metro_code    = data[11]
    location.area_code     = data[12]
    location.timezone      = TimezoneRegions.timezone(data[2], data[6])

    return location
  end
  
  private
  
  def api
    if File.exists? DATA
      @api ||= GeoIP.new(DATA)
    else
      logger.warn "GeoLiteCity data file not found! Run `rake geo_lite:download_data_file`."
      @api.city = nil
    end
  end
  
end