install-stage2

#!/bin/bash
echo "Rembember to install devicetree overlay. See uEnv.txt (Insert uboot_overlay_addr0=BB-UART4-00A0.dtbo)"
set -e # Halt on error
#set -x # bash Debug setting
USER=debian
run_cmd() {
	if $@ #1>/dev/null 2>&1
	then
		return 0
	else
		echo "ERROR: running command $@"
		exit 1
	fi
}
perror() {
	printf "ERROR: %s\n" "$*" >&2
}

if [ $EUID -ne 0 ]
then 
	echo -e "ERROR: You need root credentials to run this script"
	exit
fi

echo "Preparing Beagleboard black"
echo "Prepared for: Debian GNU/Linux 12 (bookworm)"
if [ `lsb_release -rs 2>/dev/null` -ne 12 ]
then 
	echo "WARNING: You are installing on GNU/Linux `lsb_release -rs 2>/dev/null`"
	sleep 5
fi
echo "Checking if DK locale settings installed"
if ! grep -q 'da_DK.utf8' - <<< $(locale -a)
then
	LOCALE="da_DK.utf8"
	echo "Installing support for $LOCALE"
	sed -i 's!# da_DK.UTF-8 UTF-8!da_DK.UTF-8 UTF-8!' /etc/locale.gen
	locale-gen
fi

TZ="Europe/Copenhagen"
echo "Checking timezone is $TZ"
if ! grep -q $TZ - <<< $(timedatectl)
then
	echo "Setting timezone to $TZ"
	run_cmd timedatectl set-timezone $TZ
fi
echo "Creating Users"
DAEMON="mbus"
if ! grep $DAEMON /etc/passwd
then
	sudo adduser --disabled-login --no-create-home --system --group --comment "M-bus user" $DAEMON
	groupmod --append --users $DAEMON dialout  # Permission to use serial lines
	groupmod --append --users $DAEMON systemd-journal
	groupmod --append --users $DAEMON i2c
	groupmod --append --users $DAEMON gpio
fi

echo -en "Cheking if nats-server installed.....: "
if ! systemctl status nats-server > /dev/null 2>&1
then
	echo -e "[Not installed]\nInstalling"
	apt -y install nats-server
else
	echo -e "[Installed]"
fi
echo -en "Cheking if mosquitto clients is installed.....: "
if ! which mosquitto_sub > /dev/null 2>&1
then
	echo -e "[Not installed]\nInstalling"
	apt -y install mosquitto-clients
else
	echo -e "[Installed]"
fi
echo -en "Cheking if nats-client installed.....: "
if  ! nats >/dev/null 2>&1 
then
	echo -e "[Not installed]\nInstalling"
	wget https://github.com/nats-io/natscli/releases/download/v0.1.5/nats-0.1.5-arm7.deb
	apt -y install ./nats-0.1.5-arm7.deb
else
	echo -e "[Installed]"
fi

echo -en "Cheking if UART4 device tree installed.....: "
UART4OVERLAY="BB-UART4-00A0.dtbo"
if ! grep -q $UART4OVERLAY /boot/uEnv.txt
then
	echo -e "[Not installed]\nInstalling"
	UBOOTVAR="uboot_overlay_addr0"
	OVERLAYFILE="/boot/dtbs/$(uname -r)/overlays/${UART4OVERLAY}"
	if test ! -f $OVERLAYFILE
	then
	   perror "Missing device tree overlay: $OVERLAYFILE"
	   echo "Fuck"
	   exit 1
	fi
	sed -i "s!#${UBOOTVAR}=<file0>.dtbo!${UBOOTVAR}=${OVERLAYFILE}!" /boot/uEnv.txt
	if ! grep -q $UART4OVERLAY /boot/uEnv.txt
	then
	   perror "Substitution failed in file /boot/uEnv.txt setting: ${UBOOTVAR}=${OVERLAYFILE}"
	   exit
	fi
else
	echo -e "[Installed]"
fi