module StoreRating

# File lib/store-rating.rb, line 49
def self.android_rating(bundle_id)
  url = "https://play.google.com/store/apps/details?id=#{bundle_id}"
  prop = 'meta[itemprop="ratingValue"]'

  doc = Nokogiri::HTML(open(url))

  if doc.at_css(prop)
    return doc.at_css(prop)[:content].strip.to_f.round(2)
  end

  return 0
end

# File lib/store-rating.rb, line 23
def self.ios_rating(country, app_id)
  url = "https://itunes.apple.com/#{country}/rss/customerreviews/id=#{app_id}/sortBy=mostRecent/json"

  url = URI.parse(url)
  req = Net::HTTP::Get.new(url)
  net = Net::HTTP.new(url.host, url.port)
  net.use_ssl = true

  res = net.start do |http|
    http.request(req)
  end

  json =  JSON.parse(res.body)

  if json.has_key?("feed")
    if json["feed"].has_key?("entry")
      return (json["feed"]["entry"].sum { |o| o["im:rating"]["label"].to_f } / json["feed"]["entry"].length).round(2)
    end
  end

  return 0
end

# File lib/store-rating.rb, line 12
def self.rating(app_id, country = nil)
  if app_id.to_i > 0 && country != nil # iOS
    return ios_rating(country, app_id)
  else # Android
    return android_rating(app_id)
  end
end