get neighborhood name and polygon using maponics spatial api

maponics.rb

# encoding: utf-8
require 'multi_json'
require 'httpclient'
require 'cache_method'
require 'active_support/core_ext'

module Maponics
  USERNAME = 'oaisjdoaisjdoaisjd'
  PASSWORD = 'aosidjoasidjoaisjdoasid'
  ENDPOINT = 'http://api.maponics.com/interface/'
  HEADERS = {'Content-Type' => 'application/x-www-form-urlencoded'}

  def Maponics.post(method, params)
    x =<<-EOS
    <?xml version="1.0" encoding="UTF-8" ?>
    <data>
      <auth>
        <loginname>#{USERNAME}</loginname>
        <key>#{PASSWORD}</key>
      </auth>
      <request>
        <dataset>N</dataset>
        <method>#{method}</method>
        <returnType>json</returnType>
        <parameters>
          #{params.map { |k, v| "<#{k}>#{v.to_s.to_xs}</#{k}>" }.join }
        </parameters>
      </request>
    </data>
EOS
    res = HTTPClient.post(ENDPOINT, x, HEADERS)
    payload = MultiJson.load res.body
    $stderr.puts "Maponics #{method}"
    if payload[0]['resultcode'] == 0
      payload[1][0]
    else
      raise payload[0].inspect
    end
  end

  # most efficient to get name and [n]id at the same time
  def Maponics.id_by_lat_lon(lat, lon)
    id_and_name_by_lat_lon(lat, lon)[0]
  end

  # most efficient to get name and [n]id at the same time
  def Maponics.name_by_lat_lon(lat, lon)
    id_and_name_by_lat_lon(lat, lon)[1]
  end

  def Maponics.id_and_name_by_lat_lon(lat, lon)
    attr = attr_by_lat_lon(lat, lon, ['nid', 'neighborhd'])
    [ attr['nid'], attr['neighborhd'] ]
  end

  def Maponics.attr_by_lat_lon(lat, lon, fields)
    params = { lat: lat, lon: lon, fields: fields.join(',') }
    data = post 'getGeoAttByCoord', params
    raise "no attrs" unless data.is_a?(Hash)
    data
  end

  def Maponics.poly_by_id(id)
    data = post 'getGeoPolyByID', id: id
    geom = data['geom']
    raise "bad geom" unless geom =~ /\d+\.\d+/
    rawlonlat = geom[(geom.index('(((')+3)...geom.rindex(')))')]
    rawlonlat.split(',').map { |pair| pair.split(' ').reverse.map(&:to_f) }
  end

  class << self
    cache_method :attr_by_lat_lon
    cache_method :poly_by_id
  end  
end

if __FILE__ == $0
  require 'redis'
  CacheMethod.config.storage = Redis.new
  require 'geocoder'
  if (results = Geocoder.search(ARGV[0], :params => {:countrycodes => "us"})).any?
    lat, lon = results[0].latitude, results[0].longitude
    id = Maponics.id_by_lat_lon(lat, lon)
    puts Maponics.name_by_lat_lon(lat, lon)
    puts Maponics.poly_by_id(id).inspect
  end
end