check twitter username availability

checker.rb

require "rubygems"
require "bundler/setup"
require "pony"
require "httparty"

Pony.options = {
  :via => :smtp,
  :via_options => {
    :address => 'smtp.sendgrid.net',
    :port => '587',
    :domain => 'heroku.com',
    :user_name => ENV['SENDGRID_USERNAME'],
    :password => ENV['SENDGRID_PASSWORD'],
    :authentication => :plain,
    :enable_starttls_auto => true
  }
}

expected = '{"valid":false,"reason":"","msg":"","desc":""}'
endpoint = "https://twitter.com/users/username_available?username=#{ENV['USERNAME']}"

res = HTTParty.get endpoint

if res.response.code == "200" && expected != res.body
  puts "changed, sending email"

  Pony.mail(
    to:      ENV["MAIL_TO"],
    from:    ENV["MAIL_FROM"],
    subject: "@#{ENV['USERNAME']} twitter account changed!",
    body:    "Hurry up! \n\n\n #{res.body}"
  )
else
  puts "nope #{res.response.code}"
end

checker.sh

#!/bin/bash

# to run out of cron every 10 minutes
# */10 * * * * USERNAME=<HERE> /bin/bash -l -c '/home/deployer/apps/twitter_checker/checker.sh >> /home/deployer/apps/twitter_checker/checker.log'

# might be different depending on the status of the user you're watching
EXPECTED='{"valid":false,"reason":"","msg":"","desc":""}'

RES=$(curl -s https://twitter.com/users/username_available\?username\=$USERNAME)

if [ "$RES" != "$EXPECTED" ]; then
  echo "$(date) changed!"
  $(echo "$(date) $RES" | mail -s "@$USERNAME twitter account changed!" [email protected])
else
  echo "$(date) meh"
fi

Gemfile

# A sample Gemfile
source "https://rubygems.org"

ruby "2.1.2"

gem "httparty"
gem "pony"

Gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:
    httparty (0.13.3)
      json (~> 1.8)
      multi_xml (>= 0.5.2)
    json (1.8.2)
    mail (2.6.3)
      mime-types (>= 1.16, < 3)
    mime-types (2.4.3)
    multi_xml (0.5.5)
    pony (1.11)
      mail (>= 2.0)

PLATFORMS
  ruby

DEPENDENCIES
  httparty
  pony