App store rankings for Dashing

get_ranks.rb

#encoding: utf-8
# Disclaimer:
# This is a quick hack to display ios app store rankings. It works for me.
# On your machine for all I know it could delete your hard drive, freeze your city's power grid,
# start WWIII, or even lock Australian people out of their iPhones, so use with caution.
require 'time'
require 'json'

# see genre codes here: https://www.apple.com/itunes/affiliates/resources/documentation/genre-mapping.html
# main country codes (sf=)
# JP: 143462
# US: 143441
# KR: 143466
# CN: 143465

def get_rank(genre)
  country_code = 143462
  app_name = "My Little App"
  rank = "園外"
  rankings = JSON.parse(`curl "http://ax.itunes.apple.com/WebObjects/MZStoreServices.woa/ws/RSS/topfreeapplications/sf=#{country_code}/limit=100/genre=#{genre}/json" 2>/dev/null`)
  rankings["feed"]["entry"].each_with_index {|x, i| rank = i+1 if x["im:name"]["label"] == app_name}

  rank
end

SCHEDULER.every '1h' do
  all_rank    = get_rank(36)
  games_rank  = get_rank(6014)
  sports_rank = get_rank(7016)

  text = "総合無料：#{all_rank} / ゲーム無料：#{games_rank} / スポーツ無料: #{sports_rank}"
  send_event('rankings', { text:  text })
end