#!/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;
}

failexit(){
	slog " > failed";
	exit 127;
}



################################################
####          ONLY ON FIRST BOOT            ####
################################################
if [ -e /target/sync ]; then
	slog " ** sync target already exists";
	exit 127;
fi;

# (x) If no network -> exit #
slog " * 4. Checking connectivity";
test $(systemctl is-active network-online.target) = "active" \
	&& slog " > done" \
	|| failexit;


# [1] Installation
#========================================================#
# (1) Try to install necessary packages
slog " * 5. Updating packages";
sudo apt-get update;
test $? -eq 0 \
	&& slog " > done" \
	|| failexit;

slog " * 6. Installing necessary packages";
sudo apt-get -y install git php5 php5-cli php5-curl python-dev;
test $? -eq 0 \
	&& slog " > done" \
	|| failexit;


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

# (2) With git if installed #
slog " * 7. Cloning source";
if `sudo -u sats test -d /home/sats/satsd/source`; then
	slog " > done (already cloned)";
else
	sudo -u sats git clone -b $BRANCH ssh://smmp-server/satsd/git /home/sats/satsd/source \
		&& slog " > done" \
		|| failexit;
fi;



# (2) Enable SPI device #
echo " * 8. Enabling spi device";
echo "dtparam=spi=on"        | sudo tee -a /boot/config.txt > /dev/null \
	|| failexit;
echo "dtoverlay=spi-bcm2708" | sudo tee -a /boot/config.txt > /dev/null \
	|| failexit;
slog " > done";

# (3) Clone SPI python library #
slog " * 9. Cloning 'SPI-Py' lib";
if [ -d /home/pi/spi-lib ]; then
	slog " > done (already cloned)";
else
	git clone https://github.com/lthiery/SPI-Py.git /home/pi/spi-lib \
		&& slog " > done" \
		|| failexit;
fi;

# (4) Install SPI python library #
slog " * 10. Installing 'SPI-Py' lib into the system";
cd /home/pi/spi-lib;
sudo python setup.py build \
	|| failexit;
sudo python setup.py install \
	|| failexit;
slog " > done";


# [2] Synchronization
#========================================================#
# (1) Process sync #
slog " * 11. Synchronizing the SATS with SMMP's server";
test "$(sudo -u sats /home/sats/satsd/source/lib/api/sync)" = "0" \
	&& slog " > done" \
	||  failexit;

# (2) Create target file #
slog " * 12. Creating target file 'sync'";
sudo -u sats touch /target/sync \
	&& slog " > done" \
	|| failexit;

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