How to get someone's attention without disturbing everyone

noodge.rb

require 'net/http'
require 'digest/md5'

# USAGE: noodge.rb bob #send 'nudge' to bob
#        noodge.rb alice 'hi alice' # sends 'hi alice' to alice
#        noodge.rb alice 'bye alice' bob # send 'bye alice' to alice as bob
# each time you send as someone (via 3rd param or via application request) it will save your name into the config so that next time you won't need to set it.  

API_KEY = "YOUR Notify.io API KEY"
NOODGE_FILE = ".noodge_user" # A config file to hold the FROM user

# The list of people in your office each person can have several name or nicknames (make sure not to have overlapping names'
# The google account email with which he signed up to Notify.io 
# an icon to show up every message
PEOPLE = [{:names=>["yon","yonatan","bergman"],:email=>"yon@email.com",:icon=>"http://www.giftsproject.com/images/yonatan.jpg"},
          {:names=>["bob","bobi","thebob"],:email=>"bob@gmail.com",:icon=>"http://www.giftsproject.com/images/asaf.jpg"},
          {:names=>["alice","alica","ali"],:email=>"alice@gmail.com",:icon=>"http://www.giftsproject.com/images/martha.jpg"}
          ]

def cli_error(msg)
  puts "ERROR: #{msg}"
  exit
end

def find_person(to)
  PEOPLE.each do |person|
    person[:names].each do |name|
      return person if name.to_s.downcase==to.to_s.downcase
    end
  end
  nil
end

def find_person!(to)
  p = find_person(to)
  cli_error "There is no one named #{to} !!" if p.nil?
  p
end

def who_are_you?
  @me = nil
  while @me.nil?
    if ARGV.length > 2
      user_name = ARGV[2]
    elsif File.exists? NOODGE_FILE
      user_name = File.read(NOODGE_FILE)
    else
      ARGV.clear
      puts "Who are you?"
      user_name = gets.chomp.gsub(" ","")
    end
    @me = find_person(user_name)
  end
  File.open(NOODGE_FILE,'w').write(@me[:names].first)
end

def send_message(to,msg=nil,title=nil)
  msg ||= "nudge"
  title ||= "#{@me[:names].first} says:"

  params = {:api_key=>API_KEY,
            :title=>title,
            :text=>msg,
            :icon=>@me[:icon],
            :tags => "sticky", # Remove these lines if you don't want sticky notifications
            :sticky=>true      # Remove these lines if you don't want sticky notifications
            }

  Net::HTTP.post_form( post_url(to),params)
end

def hash(person)
  Digest::MD5.hexdigest(person[:email])
end

def post_url(person)
  URI.parse("http://api.notify.io/v1/notify/#{hash(person)}")
end


if ARGV.length < 1
  cli_error "at least tell me who you're gonna send to"
end

to = find_person! ARGV.first
msg = nil
if ARGV.length > 1
  msg = ARGV[1] unless ARGV[1].empty?
end

who_are_you?
send_message(to,msg)
puts "Sent"