wrapper for jamf policy runner

app_uninstall_install.rb

#!/usr/bin/env ruby
# 110224, revised with loop to accept an array
# 110425, swapped order of variable definition in get_version
# 120301, made more generic, removed loop, added uninstall and install

require 'FileUtils'

def get_version(app)
   if File.exists?("#{app}/Contents/Info.plist")
     vers = `/usr/bin/defaults read "#{app}"/Contents/Info CFBundleShortVersionString`.chomp
     $?.success? ? vers : "ERROR: could not get version"
   else
     puts "#{app} is not installed."
   end
   return vers
end

def uninstall_app(app,version)
  if get_version(app).to_f < version.to_f
    puts "version matches: #{version}. removing..."
    #FileUtils.rm_rf(app, :verbose => true)
  else
    puts "version < #{version} of #{app} not present."
    return "1"
  end
end

def install_app(app,trigger)
  puts "installing #{app}"
  %x(/usr/sbin/jamf -policy -trigger #{trigger} -verbose)
end


if uninstall_app(ARGV[3],ARGV[4]) == "1"
  exit
else
  install_app(ARGV[3],ARGV[5])
end