#!/bin/bash

function update() {
	# if commented or exists -> do nothing -> return false (1)
	# if doesn't exist -> add it -> return true (0)
  grep "^#.*$1" $2 2>&1 >/dev/null
  if [ $? -ne 0 ]; then
    grep "^$1" $2 2>&1 >/dev/null
    if [ $? -ne 0 ]; then
      echo "$1" >> $2 
			return 0
    fi 
  fi
	return 1
}

function insert() {
  # if commented -> add it
  # if doesn't exist -> add it
  # if exists -> do nothing
  grep "^$1" $2 2>&1 >/dev/null
  if [ $? -ne 0 ]; then
    echo "$1" >> $2
  fi
}

insert "dtparam=spi=on" /boot/config.txt
insert "gpio=8=pd" /boot/config.txt
insert "dtoverlay=spi0-1cs,cs0_pin=7" /boot/config.txt
update "dtoverlay=w5500,cs=0,int_pin=6" /boot/config.txt
insert "dtparam=i2c_arm=on" /boot/config.txt
update "dtoverlay=i2c-rtc,ds3231" /boot/config.txt
update "dtoverlay=sc16is752-spi1-rpiplc-v4,xtal=14745600" /boot/config.txt

update "enable_uart=1" /boot/config.txt
sed -i 's/console=serial0,115200 //' /boot/cmdline.txt

insert "i2c-dev" /etc/modules

if [ ! -f /etc/network/interfaces.d/eth0_1 ]; then 
	cat > /etc/network/interfaces.d/eth0_1 << EOT
auto eth0:1
allow-hotplug eth0:1
iface eth0:1 inet static
	address 10.10.10.20
	netmask 255.255.255.0
EOT
fi

if [ ! -f /etc/network/interfaces.d/eth1_1 ]; then
	cat > /etc/network/interfaces.d/eth1_1 << EOT
auto eth1:1
allow-hotplug eth1:1
iface eth1:1 inet static
	address 10.10.11.20
	netmask 255.255.255.0
EOT
fi

[ ! -d /home/pi/.ssh ] && mkdir /home/pi/.ssh && chown pi:pi /home/pi/.ssh
[ ! -f /home/pi/.ssh/authorized_keys ] && touch /home/pi/.ssh/authorized_keys && chown pi:pi /home/pi/.ssh/authorized_keys && chmod 600 /home/pi/.ssh/authorized_keys
update "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDCmUlYcl2AIROXD6US8s6D+IFU/Mau3TLuoPIhv5t6V0O+u0zoDEvAurC2xP1xf0mLabaIkFxGgixeSvaGrIqy1oPP30ly8f+zMKe0P9k41D+Lq8ZR9ohdTivlZm5MfW4l6xV6jojWPZNafMn+WW7trfRP/XRxKzcz2mjU9GMLHQmxHqBCsqlnUYkIH0Hq+3xwj9U/IJqYiQD5cm9mtXNLhwK7fYS81GPJhE9bNrJ7B/gmvVw0/3JMCK08DcbUOfHoCvJVbYCdZOM3xPIBtnmtLVD9YWn49yXXDg7Ndipq+tYIpg78HLJkhl31wvXiuKZKne/+sCtWArWZkrLdtLhn pi@raspberrypi" /home/pi/.ssh/authorized_keys

systemctl enable ssh

apt-get update

RPISHUTDOWN_STATUS=0
systemctl status rpishutdown
[ $? -eq 0 ] && RPISHUTDOWN_STATUS=1 && systemctl stop rpishutdown
curl -L https://apps.industrialshields.com/main/rpi/ups/rpishutdown.service -o /lib/systemd/system/rpishutdown.service
curl -L https://apps.industrialshields.com/main/rpi/ups/rpishutdown -o /usr/local/bin/rpishutdown
chmod ugo+x /usr/local/bin/rpishutdown
if [ ${RPISHUTDOWN_STATUS} -eq 1 ]; then
	systemctl daemon-reload && systemctl start rpishutdown
fi
systemctl enable rpishutdown.service

HWCONFIG_STATUS=0
systemctl status hw-config
[ $? -eq 0 ] && HWCONFIG_STATUS=1 && systemctl stop hw-config
curl -L https://apps.industrialshields.com/main/rpi/rpiplc_click_v4/hw-config.service -o /lib/systemd/system/hw-config.service
curl -L https://apps.industrialshields.com/main/rpi/rpiplc_click_v4/hw-config -o /usr/local/bin/hw-config
chmod ugo+x /usr/local/bin/hw-config
if [ ${HWCONFIG_STATUS} -eq 1 ]; then
	systemctl daemon-reload && systemctl start hw-config
fi
systemctl enable hw-config.service

mkdir -p /usr/local/share/industrialshields/overlays/
curl -L https://apps.industrialshields.com/main/rpi/rpiplc_click_v4/sc16is752-spi1-rpiplc-v4.dtbo -o /boot/overlays/sc16is752-spi1-rpiplc-v4.dtbo

curl -L https://apps.industrialshields.com/main/rpi/rpiplc_click_v4/librpiplc.tgz -o - | tar zxvf - -C /usr/lib/

curl -L https://apps.industrialshields.com/main/rpi/rpiplc_click_v4/test.tgz -o - | tar zxvf - -C /home/pi/
chown -R pi:pi /home/pi/test

# Bullseye doesn't need it
# sed -i -e "/^if \[ -e \/run\/systemd\/system \].*/,+2 s/^/# /" /lib/udev/hwclock-set

LINE=$(echo "127.0.0.1 $(hostname)")
sed -i "1i${LINE}" /etc/hosts
bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered) << EOT
y
y
y
EOT
sed -i "/${LINE}/d" /etc/hosts

npm install --prefix ~/.node-red node-red-dashboard
systemctl enable nodered.service

apt-get install -y ppp ppp-dev python3-pip
cd ~
umask 022
pip3 install pyserial

apt-get clean

sync

reboot