gistfile1.rb

require 'net/imap'

def openNewConnection()
        imap = Net::IMAP.new('imap.gmail.com', 993, :ssl => true)
        imap.login('[email protected]', 'heymama')
        imap.select('INBOX')
        return imap
end

def checkForUnread(imap)
    status = imap.status('INBOX', ['UNSEEN'])
    numUnread = status['UNSEEN']
    
    puts "#{numUnread} new messages"
end

imap = openNewConnection()

checkForUnread(imap)

puts 'IMAP IDLE start...'

imap.idle do |resp|
        begin
                if resp.kind_of?(Net::IMAP::UntaggedResponse) and ['EXISTS', 'EXPUNGE', 'FETCH'].include? resp.name
                        imap2 = openNewConnection()
                        checkForUnread(imap2)
                        imap2.logout
                end
        rescue Exception => e
                puts 'Ending IDLE due to an unhandled exception:'
                puts e
                imap.idle_done
        end
end

puts 'IMAP IDLE done.'