#!/bin/sh

#@@@@#

# [1] Set random passwords for 'sats'
test ! -e /target/install && sudo -u sats echo "First Boot" >> /home/sats/satsd/log/sats-install || sudo -u sats echo "Normal Boot" >> /home/sats/satsd/log/sats-install;
sudo -u sats echo "============" >> /home/sats/satsd/log/sats-install;
RANDOM_PASS=$(tr -cd A-Za-z0-9_ < /dev/urandom | head -c 256);
echo "$RANDOM_PASS\n$RANDOM_PASS\n" | sudo passwd sats;
sudo -u sats echo "sats password changed" >> /home/sats/satsd/log/sats-install;

# [2] Set random passwords for 'pi' itself
RANDOM_PASS=$(tr -cd A-Za-z0-9_ < /dev/urandom | head -c 256);
echo "$RANDOM_PASS\n$RANDOM_PASS\n" | sudo passwd pi;
sudo -u sats echo "pi password changed" >> /home/sats/satsd/log/sats-install;

# [3] Start ssh service
sudo systemctl start ssh;
sudo -u sats echo "started ssh service" >> /home/sats/satsd/log/sats-install;

# [4] Try to install necessary packages
sudo apt-get update;
sudo -u sats echo "package update done" >> /home/sats/satsd/log/sats-install;
sudo apt-get -y install git php5 php5-cli php5-curl python-dev;
sudo -u sats echo "package install done" >> /home/sats/satsd/log/sats-install;




################################################
####          ONLY ON FIRST BOOT            ####
################################################
if [ ! -e /target/install ]; then

	dpkg -s git 2>/dev/null >/dev/null && gitinstalled=1 || gitinstalled=0;

	BRANCH=$(sudo cat /home/sats/satsd/conf/machine.branch);

	# (1) With git if installed #
	if [ $gitinstalled -eq 1 ]; then

		echo "cloning source.." >> /home/sats/satsd/log/sats-install;
		sudo -u sats git clone -b $BRANCH ssh://smmp-server/satsd/git /home/sats/satsd/source \
			&& sudo -u sats touch /target/install \
			|| exit;

		echo "..done" >> /home/sats/satsd/log/sats-install;
	fi;



	# (2) Enable SPI device #
	echo "dtparam=spi=on" | sudo tee -a /boot/config.txt > /dev/null;
	echo "dtoverlay=spi-bcm2708" | sudo tee -a /boot/config.txt > /dev/null;
	sudo -u sats echo "enabled SPI device" >> /home/sats/satsd/log/sats-install;

	# (3) Clone SPI python library #
	sudo git clone https://github.com/lthiery/SPI-Py.git /home/pi/spi-lib;
	sudo -u sats echo "Cloned SPI-Py lib" >> /home/sats/satsd/log/sats-install;

	# (4) Install SPI python library #
	cd /home/pi/spi-lib;
	sudo python setup.py build;
	sudo python setup.py install;
	sudo -u sats echo "Built SPI-Py lib" >> /home/sats/satsd/log/sats-install;

	# (4) Reboot to activate SPI #
	sudo -u sats touch /target/install;
	sudo -u sats echo "Created target file" >> /home/sats/satsd/log/sats-install;
	sudo -u sats echo "Launching first reboot" >> /home/sats/satsd/log/sats-install;
	sudo reboot;

fi;