#!/bin/bash -xe

set -o pipefail

#TODO: package this stuff in .debs and put in a reprepro
cat > "${root:?}"/usr/sbin/halo-upgrade << EOF
#!/bin/bash -e

set -o pipefail

remote="${remote:?}"
branch="${branch:?}"

remote_ref=\$(ostree remote refs -r "\$remote" | egrep ^"\$remote":"\$branch"'\\s' | awk '{print \$2}')
local_ref=\$(ostree refs -r | egrep ^"\$remote":"\$branch"'\\s' | awk '{print \$2}')

if [ "\$local_ref" != "\$remote_ref" -a -n "\$remote_ref" ]; then
	echo "OS Update available. Installing..."

	set -x

	ostree admin upgrade

	grub-mkconfig -o /boot/grub/grub.cfg

	set +x

	echo "OS Update Installed. Press Enter to Reboot..."

	read

	reboot
else
	echo "No OS Update found."
fi
EOF
chmod 755 "${root:?}"/usr/sbin/halo-upgrade