require 'hpricot'
require 'open-uri'
require 'x10/cm17a'

def there_are_failing_builds()
  retry_count = 0
  begin
    doc = Hpricot(open("http://teamcity:8080/externalStatus.html"))
    failingBuildElements = doc.search("//img[@title='Build configuration is failing']")
    return (failingBuildElements.length > 0)
  rescue
    if retry_count < 3
      retry_count += 1
      puts "Network not available. Sleeping for 10 seconds then retrying"
      sleep 10 #Wait for a bit to see if the network will come up
      retry
    else
        puts "Could not open web page (Network is down?)"
        return false
    end
  end
end

def turn_on_lamp()
  puts "BUILD BROKEN! Turning On Lamp"
  #Do it twice because sometimes the first doesn't take
  X10.device('C1').on
  X10.device('C1').on
end

def turn_off_lamp()
  #Do it twice because sometimes the first doesn't take
  puts "Build A-Ok! Turning off lamp"
  X10.device('C1').off
  X10.device('C1').off
end

puts "Welcome to the Build Monitor"

while(true)
	if(there_are_failing_builds())
	  turn_on_lamp()
	else
	  turn_off_lamp()
	end
	puts "Next status check in 60 seconds..."
	sleep 60
end