#!/bin/sh

install_file()
{
	src="$1"
	dest="$2"

	if [ ! -e "$dest" ]
	then
		cp "$src" "${dest}"
		return 1
	else
		echo "--> Service file already exists, skip creation"
		return 0
	fi
}


echo "---Hyperion ambient light postinstall ---"

#check system
CPU_RPI=`grep -m1 -c 'BCM2708\|BCM2709\|BCM2710\|BCM2835' /proc/cpuinfo`
CPU_X32X64=`uname -m | grep 'x86_32\|i686\|x86_64' | wc -l`

#Check for a bootloader as Berryboot
BOOT_BERRYBOOT=$(grep -m1 -c '\(/var/media\|/media/pi\)/berryboot' /etc/mtab)

#get current system ip
NET_IP=`hostname -I | cut -d " " -f1`

# search for users in system, returns first entry
FOUND_USR=`who | grep -o -m1 '^\w*\b'` || "root"

# determine if we should use a service
ENABLE_SERVICE=0
STARTUP_MSG="echo ---> You can start Hyperion from your menu now"

if [ $CPU_RPI -eq 1 ]; then
	ENABLE_SERVICE=1
	STARTUP_MSG="echo ---> Hyperion has been installed as service, it will start on each system startup"
fi

start_msg=""
restart_msg=""

if grep -m1 systemd /proc/1/comm > /dev/null
then
	echo "---> init deamon: systemd"
	# systemd
	install_file /usr/share/hyperion/service/hyperion.systemd /etc/systemd/system/hyperiond@.service
	# service registration just on Raspberry Pi, probably need to ask the user how we should use the service. TODO service start in user login scope eg for x11?!
	if [ $ENABLE_SERVICE -eq 1 ]; then
		systemctl enable hyperiond"@${FOUND_USR}".service
		start_msg="--> systemctl start hyperiond for user ${FOUND_USR}"
		systemctl start hyperiond"@${FOUND_USR}"
	fi

elif [ -e /sbin/initctl ]
then
	echo "---> init deamon: upstart"
	# upstart
	if [ $ENABLE_SERVICE -eq 1 ]; then
		install_file /usr/share/hyperion/service/hyperiond.initctl /etc/init/hyperion.conf && initctl reload-configuration
		start_msg="--> initctl start hyperiond"
		initctl start hyperiond
	fi

else
	echo "---> init deamon: sysV"
	# sysV
	if [ $ENABLE_SERVICE -eq 1 ]; then
		install_file /usr/share/hyperion/service/hyperion.init /etc/init.d/hyperiond && chmod +x /etc/init.d/hyperiond && update-rc.d hyperiond defaults 98 02
		start_msg="---> service hyperiond start"
		service hyperiond start
	fi
fi

#cleanup
rm -r /usr/share/hyperion/service

#link binarys and set exec bit
BINSP=/usr/share/hyperion/bin
BINTP=/usr/bin
chmod +x -R $BINSP
ln -fs $BINSP/hyperiond $BINTP/hyperiond
ln -fs $BINSP/hyperion-remote $BINTP/hyperion-remote
ln -fs $BINSP/hyperion-v4l2 $BINTP/hyperion-v4l2
ln -fs $BINSP/hyperion-framebuffer $BINTP/hyperion-framebuffer 2>/dev/null
ln -fs $BINSP/hyperion-dispmanx $BINTP/hyperion-dispmanx 2>/dev/null
ln -fs $BINSP/hyperion-x11 $BINTP/hyperion-x11 2>/dev/null
ln -fs $BINSP/hyperion-aml $BINTP/hyperion-aml 2>/dev/null
ln -fs $BINSP/hyperion-qt $BINTP/hyperion-qt 2>/dev/null

# install desktop icons
echo "---> Install Hyperion desktop icons"
mkdir /usr/share/pixmaps/hyperion 2>/dev/null
cp /usr/share/hyperion/desktop/*.png /usr/share/pixmaps/hyperion 2>/dev/null
desktop-file-install /usr/share/hyperion/desktop/hyperiond.desktop 2>/dev/null

# cleanup desktop icons
rm -r /usr/share/hyperion/desktop 2>/dev/null

#Check, if dtparam=spi=on is in place
if [ $CPU_RPI -eq 1 ]; then
	BOOT_DIR="/boot"
	if [ $BOOT_BERRYBOOT -eq 1 ]; then
		BOOT_DIR=$(sed -ne "s#/dev/mmcblk0p1 \([^ ]*\) vfat rw,.*#\1#p" /etc/mtab)
	fi
	if [ -z "$BOOT_DIR" -o ! -f "$BOOT_DIR/config.txt" ]; then
		echo '---> Warning: RPi using BERRYBOOT found but can not locate where config.txt is to enable SPI. (BOOT_DIR='"$BOOT_DIR)"
		SPIOK=1 # Not sure if OK, but don't ask to reboot
	else
		SPIOK=`grep '^\dtparam=spi=on' "$BOOT_DIR/config.txt" | wc -l`
		if [ $SPIOK -ne 1 ]; then
			echo '---> Raspberry Pi found, but SPI is not set, we write "dtparam=spi=on" to '"$BOOT_DIR/config.txt"
			sed -i '$a dtparam=spi=on' "$BOOT_DIR/config.txt"
			REBOOTMESSAGE="echo Please reboot your Raspberry Pi, we inserted dtparam=spi=on to $BOOT_DIR/config.txt"
		fi
	fi
fi

echo ${start_msg}

echo "-----------------------------------------------------------------------------"
echo "---> Hyperion has been installed/updated!"
echo "---> "
$STARTUP_MSG
echo "---> For configuration, visit with your browser: ${NET_IP}:8090"
echo "---> or if already used by another service try: ${NET_IP}:8091"
$REBOOTMESSAGE
echo "-----------------------------------------------------------------------------"
echo "Webpage: www.hyperion-project.org"
echo "Wiki: wiki.hyperion-project.org"
echo "Forum: forum.hyperion-project.org"
echo "-----------------------------------------------------------------------------"


if [ -e /opt/hyperion/ ]
then
	echo
	echo "---------------------------------------------------------------------------------"
	echo "- It seemd that you have an older version of hyperion installed in /opt/hyperion -"
	echo "- please remove it to avoid problems                                            -"
	echo "---------------------------------------------------------------------------------"
fi

exit 0
