#!/bin/bash

echo "install required packages..."
# check for outdated sources.list (Stretch only)
if grep -q -e "^deb http://raspbian.raspberrypi.org/raspbian/ stretch" /etc/apt/sources.list; then
	echo "sources.list outdated! upgrading..."
	sudo sed -i "s/^deb http:\/\/raspbian.raspberrypi.org\/raspbian\/ stretch/deb http:\/\/legacy.raspbian.org\/raspbian\/ stretch/g" /etc/apt/sources.list
else
	echo "sources.list already updated"
fi
apt-get update
apt-get -q -y install vim bc apache2 php php-gd php-curl php-xml php-json libapache2-mod-php jq raspberrypi-kernel-headers i2c-tools git mosquitto mosquitto-clients socat python-pip python3-pip sshpass
echo "...done"

echo "check for timezone"
if  grep -Fxq "Europe/Berlin" /etc/timezone
then
	echo "...ok"
else
	echo 'Europe/Berlin' > /etc/timezone
	dpkg-reconfigure -f noninteractive tzdata
	cp /usr/share/zoneinfo/Europe/Berlin /etc/localtime
	echo "...changed"
fi

echo "check for i2c bus"
if grep -Fxq "i2c-bcm2835" /etc/modules
then
	echo "...ok"
else
	echo "i2c-dev" >> /etc/modules
	echo "i2c-bcm2708" >> /etc/modules
	echo "snd-bcm2835" >> /etc/modules
	echo "dtparam=i2c1=on" >> /etc/modules
	echo "dtparam=i2c_arm=on" >> /etc/modules
fi

echo "check for initial git clone"
if [ ! -d /var/www/html/openWB/web ]; then
	cd /var/www/html/
	git clone https://github.com/snaptec/openWB.git --branch master
	chown -R pi:pi openWB 
	echo "... git cloned"
else
	echo "...ok"
fi

if ! grep -Fq "bootmodus=" /var/www/html/openWB/openwb.conf
then
	echo "bootmodus=3" >> /var/www/html/openWB/openwb.conf
fi

echo "check for ramdisk" 
if grep -Fxq "tmpfs /var/www/html/openWB/ramdisk tmpfs nodev,nosuid,size=32M 0 0" /etc/fstab 
then
	echo "...ok"
else
	mkdir -p /var/www/html/openWB/ramdisk
	echo "tmpfs /var/www/html/openWB/ramdisk tmpfs nodev,nosuid,size=32M 0 0" >> /etc/fstab
	mount -a
	echo "0" > /var/www/html/openWB/ramdisk/ladestatus
	echo "0" > /var/www/html/openWB/ramdisk/llsoll
	echo "0" > /var/www/html/openWB/ramdisk/soc
	echo "...created"
fi

# start mosquitto
sudo service mosquitto start

# check for mosquitto configuration
if [ ! -f /etc/mosquitto/conf.d/openwb.conf ]; then
	echo "updating mosquitto config file"
	sudo cp /var/www/html/openWB/web/files/mosquitto.conf /etc/mosquitto/conf.d/openwb.conf
	sudo service mosquitto reload
fi

echo "disable cronjob logging"
if grep -Fxq "EXTRA_OPTS=\"-L 0\"" /etc/default/cron
then
	echo "...ok"
else
	echo "EXTRA_OPTS=\"-L 0\"" >> /etc/default/cron
fi

#prepare for Buster
echo -n "fix upload limit..."
if [ -d "/etc/php/7.0/" ]; then
	echo "OS Stretch"
	sudo /bin/su -c "echo 'upload_max_filesize = 300M' > /etc/php/7.0/apache2/conf.d/20-uploadlimit.ini"
	sudo /bin/su -c "echo 'post_max_size = 300M' >> /etc/php/7.0/apache2/conf.d/20-uploadlimit.ini"
elif [ -d "/etc/php/7.3/" ]; then
	echo "OS Buster"
	sudo /bin/su -c "echo 'upload_max_filesize = 300M' > /etc/php/7.3/apache2/conf.d/20-uploadlimit.ini"
	sudo /bin/su -c "echo 'post_max_size = 300M' >> /etc/php/7.3/apache2/conf.d/20-uploadlimit.ini"
fi

echo "installing pymodbus"
sudo pip install  -U pymodbus

echo "check for paho-mqtt"
if python3 -c "import paho.mqtt.publish as publish" &> /dev/null; then
	echo 'mqtt installed...'
else
	sudo pip3 install paho-mqtt
fi

#Adafruit install
echo "check for MCP4725"
if python -c "import Adafruit_MCP4725" &> /dev/null; then
	echo 'Adafruit_MCP4725 installed...'
else
	sudo pip install Adafruit_MCP4725
fi

echo "www-data ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers.d/010_pi-nopasswd

chmod 777 /var/www/html/openWB/openwb.conf
chmod +x /var/www/html/openWB/modules/*
chmod +x /var/www/html/openWB/runs/*
chmod +x /var/www/html/openWB/*.sh
touch /var/log/openWB.log
chmod 777 /var/log/openWB.log
sudo -u pi /var/www/html/openWB/runs/atreboot.sh