#!/bin/sh
version_gt() {
	test "$(printf '%s\n' "$@"| sort -V | head -n 1)" != "$1"
}

KERNEL_RECOMMENDED_VERSION="4.14.39"
KERNEL_CURRENT_VERSION=`uname -r`

if version_gt $KERNEL_RECOMMENDED_VERSION $KERNEL_CURRENT_VERSION; then
	echo "Your Linux kernel version ($KERNEL_CURRENT_VERSION) is below the recommended kernel version ($KERNEL_RECOMMENDED_VERSION)!"
	echo "Please upgrade it first by running the below command and following on screen instructions, and run Pisound install again!"
	echo
	echo "sudo rpi-update"
	exit 1
fi

echo Importing Blokas GPG public key...
curl -s https://blokas.io/blokas-archive-keyring.gpg | sudo dd status=none of=/usr/share/keyrings/blokas-archive-keyring.gpg
echo Adding Blokas apt repository...
echo "deb [signed-by=/usr/share/keyrings/blokas-archive-keyring.gpg] http://blokas.io/apt/ rpi main" | sudo dd status=none of=/etc/apt/sources.list.d/blokas.list
echo Updating package list...
sudo apt-get update
echo Installing Pisound software...
sudo apt-get -y install pisound
echo Updating /usr/local/pisound...
sudo sh -c 'cd /usr/local/pisound && git -c user.name="blokas_installer" -c user.email="blokas@installer" stash && git pull --no-rebase'
echo
echo Now you may run \'sudo pisound-config\' to customize your installation!