#!/bin/sh

DIST="${DIST:=$(lsb_release -cs 2>/dev/null)}"
LEGACY=false

case "$DIST" in
	rpi | jessie | stretch | buster)
		echo "Your OS is based on a no longer supported Debian version, codenamed '$DIST'. Please upgrade your OS image."
		exit 1
		;;
	bullseye)
		DIST="rpi"
		LEGACY=true
		;;
	bookworm)
		LEGACY=true
		;;
esac

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

KERNEL_RECOMMENDED_VERSION=6.1.64
KERNEL_CURRENT_VERSION=$(uname -r)

echo -n "Checking if the kernel version is $KERNEL_RECOMMENDED_VERSION or newer... "
if version_gt $KERNEL_RECOMMENDED_VERSION $KERNEL_CURRENT_VERSION; then
	echo "It's not."
	echo
	echo "Your Linux kernel version ($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 "It is."

if ! ${LEGACY}; then
	echo "Importing Blokas GPG RSA4096 public key..."
	curl -s https://blokas.io/blokas-archive-keyring-rsa4096.gpg | sudo dd status=none of=/etc/apt/keyrings/blokas-archive-keyring-rsa4096.gpg
	echo "Adding Blokas APT $DIST repository..."
	cat << EOF | sudo dd status=none of=/etc/apt/sources.list.d/blokas.sources
Types: deb
URIs: http://apt.blokas.io/
Suites: $DIST
Components: main
Signed-By: /etc/apt/keyrings/blokas-archive-keyring-rsa4096.gpg
EOF
	echo "Updating package list..."
	sudo apt-get update

else
	echo "Importing Blokas GPG public key..."
	sudo mkdir -p /etc/apt/keyrings
	curl -s https://blokas.io/blokas-archive-keyring.gpg | sudo dd status=none of=/etc/apt/keyrings/blokas-archive-keyring.gpg
	echo "Adding Blokas APT $DIST repository..."
	echo "deb [signed-by=/etc/apt/keyrings/blokas-archive-keyring.gpg] http://apt.blokas.io/ $DIST main" | sudo dd status=none of=/etc/apt/sources.list.d/blokas.list
	echo "Updating package list..."
	sudo apt-get update
fi

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 -c user.name="blokas_installer" -c user.email="blokas@installer" pull --no-rebase'
echo
echo Now you may run \'sudo pisound-config\' to customize your installation!

# If you see this output, rerun the curl command with "| sh" at the end. Entire command:
#
# curl https://blokas.io/pisound/install.sh | sh