module Wta

# File lib/wta.rb, line 35
def self.bo_selecta(statusnum, region)
  pull_statuses(region)
  @all_status_images.select { |img|
    img.attributes['src'].value == "/images/status#{statusnum}.gif"
  }.map { |img|
    img.parent.parent.children[3].children[0]
  }
end

# File lib/wta.rb, line 27
def self.infos(region=NA)
  bo_selecta(INFO, region)
end

# File lib/wta.rb, line 31
def self.operating(region=NA)
  bo_selecta(FINE, region)
end

# File lib/wta.rb, line 44
def self.pull_statuses(region)
  @html = Nokogiri::HTML(open(URI.parse('http://status.aws.amazon.com/')))
  @all_status_images = @html.css('#current_events_block #' + region.upcase + '_block td img')
end

# File lib/wta.rb, line 19
def self.reds(region=NA)
  bo_selecta(RED, region)
end

# File lib/wta.rb, line 15
def self.regions
  [NA, SA, EU, AP]
end

# File lib/wta.rb, line 23
def self.yellows(region=NA)
  bo_selecta(YELLA, region)
end