############################### Xenial #########################################

gcloud compute instances create ubuntu-1604-xenial-v20170307 --image-project ubuntu-os-cloud --image "ubuntu-1604-xenial-v20170307" --metadata shutdown-script="#! /bin/bash
touch /home/ubuntu/shutdown.txt",startup-script="#! /bin/bash 
touch /home/ubuntu/startup.txt"

# Run the following on the running instance 

# clean up instance ready for testing

rm -f ~/startup.txt

#Enable proposed
echo "deb http://archive.ubuntu.com/ubuntu/ xenial-proposed restricted main multiverse universe" | sudo tee --append /etc/apt/sources.list
sudo apt-get update
sudo apt-get install --only-upgrade gce-compute-image-packages

# Note that the first upgrade will always result in shutdown 
# scripts being run as the initial gce-compute-image-packages postrm script are still in use.  
# verify that the bug still exists

if [ -f ~/shutdown.txt ]; then
    echo "Shutdown File found! Bug still present"
    rm -f ~/shutdown.txt
fi

# Add PPA with a higher version number of the same package so we can test upgrade with the same package
sudo add-apt-repository -y ppa:philroche/lp1668327-startupscript-package-update-xenial
sudo apt-get update
sudo apt-get install --only-upgrade gce-compute-image-packages
if [ ! -f ~/shutdown.txt ]; then
    echo "Shutdown File not found! Bug fixed"

fi

# start up and shutdown scripts are no longer started by 
# default on upgrade or install so we should start these manually now. 
# They will continue to restart on instance boot though. 
sudo service google-shutdown-scripts status
sudo service google-shutdown-scripts start

# clean up instance ready for testing

rm -f ~/shutdown.txt ~/startup.txt

# restart to test startup and shutdown scripts still work
sudo reboot
if [ -f ~/startup.txt ]; then
    echo "Startup File found! Startup scripts work"
    rm -f ~/startup.txt
fi
if [ -f ~/shutdown.txt ]; then
    echo "Shutdown File found! Shutdown scripts work"
    rm -f ~/shutdown.txt
fi

# If you wish to reset completely run the following

rm -f ~/shutdown.txt ~/startup.txt
sudo apt-get install ppa-purge
sudo ppa-purge -y ppa:philroche/lp1668327-startupscript-package-update-xenial