#!/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_IF=`netstat -rn | awk '/^0.0.0.0/ {thif=substr($0,74,10); print thif;} /^default.*UG/ {thif=substr($0,65,10); print thif;}'`
NET_IP=`ifconfig ${NET_IF} | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'`

#check if hyperion is running
HYPERION_RUNNING=false
pgrep hyperiond > /dev/null 2>&1 && HYPERION_RUNNING=true

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

start_msg=""
restart_msg=""

if grep -m1 systemd /proc/1/comm > /dev/null
then
	echo "--> init deamon: systemd"
	# systemd
	$HYPERION_RUNNING && systemctl stop hyperiond 2> /dev/null
	install_file /usr/share/hyperion/service/hyperion.systemd /etc/systemd/system/hyperiond@.service
	systemctl enable hyperiond"@${FOUND_USR}".service
	start_msg="--> systemctl start hyperiond for user ${FOUND_USR}"
	systemctl start hyperiond"@${FOUND_USR}"

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

else
	echo "--> init deamon: sysV"
	# sysV
	$HYPERION_RUNNING && service hyperiond stop 2>/dev/null
	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

#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


#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 "--> 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