free_love.rb

require 'rubygems'
require 'serialport'
require 'twitter'

HUG_THRESHOLD = 0.85

hug_bot = SerialPort.new "/dev/tty.usbserial-A4001hsG", 9600

httpauth = Twitter::HTTPAuth.new('pillowtweets', '--password--')
@client = Twitter::Base.new(httpauth)

def tweet_a_hug(name)
  phrases = ["Tell me about it, #{name}!", "It's OK, #{name}. Let it all out.", "There, there, #{name}.",
             "Now that feels better, doesn't it #{name}?", "Just take a deep breath, #{name}.",
             "Isn't this nice, #{name}?", "#{name}, we should do this more often.",
             "You're the best, #{name}!", "#{name}, I wish this hug could last forever.",
             "I completetely understand, #{name}.", "I feel you, #{name}.",
             "Don't worry, #{name}. everything is gonna be all right."]
  
  begin
    @client.update(phrases[rand(phrases.size)])
  rescue
  end
end

print "Please enter your name: "
name = gets.chomp

puts "Calibrating. Don't hug the pillow just yet!"

calibration_values = []
15.times do
  calibration_values << hug_bot.getc
end

sum = calibration_values.inject(0){|s,v| s+=v }
average = sum / calibration_values.size

puts "Ready to go. Hug away!"

hugging = false

loop do
  fan_value = hug_bot.getc
  
  if(fan_value < HUG_THRESHOLD * average)
    
    if(!hugging)
      puts "We gots a hug! Preparing a tweet just for you, #{name}."
      
      tweet_a_hug(name)
      
      hugging = true
    end
    
  else
    
    hugging = false
    
  end
  
end