#!/bin/sh

#@@@@#

LOGFILE="/home/sats/satsd/log/install.log";


plog(){
	sudo -u sats tee -a /home/sats/satsd/log/install.log > /dev/null;
}

slog(){
	echo "$1" | plog;
}


# [1] Set up firewall
slog " * 1. Setting firewall rules";
sudo sh /home/pi/iptables \
	&& slog " > done" \
	|| ( slog " > failed" && exit 127 );

# [2] Start ssh service
slog " * 2. Starting ssh service";
sudo systemctl start ssh \
	&& slog " > done" \
	|| ( slog " > failed" && exit 127 );

# [3] Notify boot (first or normal) #
echo;
test ! -e /target/sync && echo "First Boot"  | plog;
test   -e /target/sync && echo "Normal Boot" | plog;
slog "============";

# [4] Set random passwords for 'sats'
echo " * 3. Changing sats password" | plog;
RANDOM_PASS=$(tr -cd A-Za-z0-9_ < /dev/urandom | head -c 256);
echo -ne "$RANDOM_PASS\n$RANDOM_PASS\n" | sudo passwd sats;
test $? -eq 0 \
	&& slog " > done" \
	|| ( slog " > failed" && exit 127 );

# [5] Set random passwords for 'pi' itself
echo " * 4. Changing pi password" | plog;
RANDOM_PASS=$(tr -cd A-Za-z0-9_ < /dev/urandom | head -c 256);
echo -ne "$RANDOM_PASS\n$RANDOM_PASS\n" | sudo passwd pi;
test $? -eq 0 \
	&& slog " > done" \
	|| ( slog " > failed" && exit 127 );




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

	# (1) If no network -> exit #
	slog " * 5. Checking connectivity";
	test $(systemctl is-active network-online.target) = "active" \
		&& slog " > done" \
		|| ( slog " > failed" && exit 127 );


	# [1] Installation
	#========================================================#
	# (1) Try to install necessary packages
	slog " * 6. Updating packages";
	sudo apt-get update;
	test $? -eq 0 \
		&& slog " > done" \
		|| ( slog " > failed" && exit 127 );

	slog " * 7. Installing necessary packages";
	sudo apt-get -y install git php5 php5-cli php5-curl python-dev;
	test $? -eq 0 \
		&& slog " > done" \
		|| ( slog " > failed" && exit 127 );


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

	# (2) With git if installed #
	slog " * 8. Cloning source";
	sudo -u sats git clone -b $BRANCH ssh://smmp-server/satsd/git /home/sats/satsd/source;
	test $? -eq 0 \
		&& slog " > done" \
		|| ( slog " > failed" && exit 127 );



	# (2) Enable SPI device #
	echo " * 9. Enabling spi device";
	echo "dtparam=spi=on"        | sudo tee -a /boot/config.txt > /dev/null \
		|| ( slog " > failed" && exit 127 );
	echo "dtoverlay=spi-bcm2708" | sudo tee -a /boot/config.txt > /dev/null \
		|| ( slog " > failed" && exit 127 );
	slog " > done";

	# (3) Clone SPI python library #
	slog " * 10. Cloning 'SPI-Py' lib";
	git clone https://github.com/lthiery/SPI-Py.git /home/pi/spi-lib \
		&& slog " > done" \
		|| ( slog " > failed" && exit 127 );

	# (4) Install SPI python library #
	slog " * 11. Installing 'SPI-Py' lib into the system";
	cd /home/pi/spi-lib;
	sudo python setup.py build \
		|| ( slog " > failed" && exit 127 );
	sudo python setup.py install \
		|| ( slog " > failed" && exit 127 );
	slog " > done";


	# [2] Synchronization
	#========================================================#
	# (1) Exports #
	__DIR__=/home/sats/satsd/source;

	source $__DIR__/lib/include/bash/const;
	source $__DIR__/lib/include/bash/func;

	# (2) Process sync #
	slog " * 12. Synchronizing the SATS with SMMP's server";
	test "$(sudo -u sats $SOURCE_DIR/lib/api/sync)" = "0" \
		&& slog " > done" \
		||  ( slog " > failed" && exit 127 );

	slog "Creating target file 'sync'";
	sudo -u sats touch /target/sync \
		&& slog " > done" \
		|| ( slog " > failed" && exit 127 );


	# (3) Reboot to activate SPI #
	slog " * 13. Launching first reboot";
	sudo reboot;

fi;