#!/bin/sh

USBDIR="`dirname $0`"

SYSLEDPATH_4_0_IBTS="/sys/class/leds/yellow:debug"
SYSLEDPATH_4_0_IFEMTO="/sys/class/leds/led1:red:power"
SYSLEDPATH="/sys/class/leds/status"

led_path="/do/not/exist"
if [ -e "${SYSLEDPATH}" ]; then
	led_path="${SYSLEDPATH}"
elif [ -e "${SYSLEDPATH_4_0_IBTS}" ]; then
	led_path="${SYSLEDPATH_4_0_IBTS}"
elif [ -e "${SYSLEDPATH_4_0_IFEMTO}" ]; then
	led_path="${SYSLEDPATH_4_0_IFEMTO}"
fi

#
# Set default led behavior
# $1: trigger
#
#    if trigger = timer : $2 = delay_on, $3 = delay_off
#
set_led() {
	trigger="${1}"
	on="$2"
	off="$3"

	if [ -e "${led_path}" ]; then
		echo $trigger > "${led_path}/trigger"
		case "$trigger" in
			"timer")
				echo ${on:=500} > "${led_path}/delay_on"
				echo ${off:=500} > "${led_path}/delay_off"
				;;
			"none")
				echo ${on:=0} > "${led_path}/brightness"
				;;
			*)
				# Nothing to do
				;;
		esac
	fi
}


deploy_packages()
{
	mkdir -p /user/.updates
	for pkg in ${USBDIR}/*.ipk
	do
		cp ${pkg} /user/.updates/
	done
	sync
}

#
# Force the system to put the packages immediately in backup
#
force_backup()
{
	touch /user/.updates/force_backup
	sync
}


#
# Trigger update and reboot in $1 minutes (or 'now')
#
trigger_update()
{
	REBOOT_TIMEOUT=$1

	kerosd -u
	[ ${REBOOT_TIMEOUT:=0} -ne 0 ] && shutdown -r ${REBOOT_TIMEOUT}
}


#####################
#     MAIN
#####################

# Set led On
set_led none 1

# Deploy packages
deploy_packages

# Trigger Update
trigger_update

# Optional: Force the system to put the packages immediately in backup
#force_backup

# Prepare reboot after USB unplug
cat > /tmp/usbkey_remove << EOF
# Switch off Led
echo "none" > ${led_path}/trigger

# Reboot Now to get Update
reboot
EOF

# All is right, make Led blinking fast to notify User
set_led "timer" 100 100