#!/bin/bash

set -e

PATH=/bin:/usr/bin:/sbin:/usr/sbin
DBUS_SEND="/usr/bin/dbus-send"

usage()
{
	echo "USAGE> input_keyevent {key name} {down | up}"
	echo ""
	echo "example>"
	echo "	input_keyevent XF86Back"
	echo "	-> Generate a 'down'+'up' event of XF86Back key"
	echo "	input_keyevent XF86Back down"
	echo "	-> Generate a 'down' event of XF86Back key
	echo "	input_keyevent XF86Back up"
	echo "	-> Generate a 'up' event of XF86Back key
}

failed_on_sending_dbus()
{
	echo "Failed on sending key generation request ! (key name : $1)"
	exit 1
}

if [ $# -lt 1 ]; then
	echo "Arguments are required."
	usage
	exit 1
fi

if [ $# -gt 2 ]; then
	echo "Number of arguments are exceed."
	usage
	exit 1
fi

if [ ! -x ${DBUS_SEND} ]; then
	echo "Tool doesn't exist or permission denied."
	exit 1
fi

if [ "$#" = "1" ]; then
	$DBUS_SEND --system --type=method_call --print-reply --dest=org.enlightenment.wm /org/enlightenment/wm org.enlightenment.wm.Test.EventKey uint32:1 string:"$1" > /dev/null || failed_on_sending_dbus $1
	$DBUS_SEND --system --type=method_call --print-reply --dest=org.enlightenment.wm /org/enlightenment/wm org.enlightenment.wm.Test.EventKey uint32:0 string:"$1" > /dev/null || failed_on_sending_dbus $1
else
	if [ "$#" = "2" ]; then
		case $2 in
			down)
				$DBUS_SEND --system --type=method_call --print-reply --dest=org.enlightenment.wm /org/enlightenment/wm org.enlightenment.wm.Test.EventKey uint32:1 string:"$1" > /dev/null || failed_on_sending_dbus $1
				;;
			up)
				$DBUS_SEND --system --type=method_call --print-reply --dest=org.enlightenment.wm /org/enlightenment/wm org.enlightenment.wm.Test.EventKey uint32:0 string:"$1" > /dev/null || failed_on_sending_dbus $1
				;;
			*)
				usage
				exit 1
		esac

	fi
fi