module GeoNamesAPI
  class TimeZone < SingletonEndpoint

    METHOD = "timezoneJSON"
    FIND_PARAMS = %w(lat lng radius date)

    def time_zone
      ActiveSupport::TimeZone.new(timezone_id)
    end

    def common_name
      ActiveSupport::TimeZone::MAPPING.key(timezone_id)
    end

    def local(time_type)
      t = DateTime.parse(send(time_type))
      time_zone.local(t.year, t.month, t.day, t.hour, t.minute)
    end

    def utc(time_type)
      local(time_type).utc
    end

    def method_missing(method, *args)
      case method
        # Provides the local and utc time variant of each time
        # Examples: time_zone.sunrise_local, time_zone.time_utc
        when /\A(.*)_(local|utc)\Z/
          send($2, $1)
      end
    end

  end
end