#!/bin/bash
################################################################################
# Copyright 2021 ModalAI Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# 4. The Software is used solely in conjunction with devices provided by
#    ModalAI Inc.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
################################################################################

CONTROL_PIPE=/run/mpa/lepton0_raw/control
COMMAND_AUTO="set_ffc_shutter_auto"
COMMAND_MANUAL="set_ffc_shutter_manual"
COMMAND_FLOW="set_ffc_shutter_flow"
COMMAND_RUN="run_ffc_shutter"
COMMAND_REBOOT="reboot_lepton"

usage () {
	echo ""
	echo "Set the lepton shutter mode to manual or auto while voxl-lepton-server"
	echo "is running. Set default mode in /etc/modalai/voxl-lepton-server.conf"
	echo ""
	echo "Also force run an FFC shutter calibration with the run command."
	echo "this can be done in either manual or auto mode"
	echo ""
	echo "Note these only work on VOXL2 when a lepton is connected to an I2C"
	echo "bus and i2c is enabled in /etc/modalai/voxl-lepton-server.conf"
	echo ""
	echo "voxl-lepton-shutter auto"
	echo "voxl-lepton-shutter manual"
	echo "voxl-lepton-shutter flow"
	echo "voxl-lepton-shutter run"
	echo "voxl-lepton-shutter reboot"
	echo "voxl-lepton-shutter help"
	echo ""
	echo ""
	exit 0
}

if [ "$1" == "-h" ]; then
	usage
	exit 0
elif [ "$1" == "--help" ]; then
	usage
	exit 0
elif [ "$1" == "help" ]; then
	usage
	exit 0
fi


USER=$(whoami)
if [ "${USER}" != "root" ]; then
	echo "Run this script as the root user"
	exit 1
fi

if ! [ -p ${CONTROL_PIPE} ]; then
	echo "voxl-lepton-server is not running or I2C is not enabled"
	exit 1;
fi


case "$1" in
	"auto"|"AUTO")
		echo ${COMMAND_AUTO} >> ${CONTROL_PIPE}
		;;
	"manual"|"MANUAL")
		echo ${COMMAND_MANUAL}  >> ${CONTROL_PIPE}
		;;
	"flow"|"FLOW")
		echo ${COMMAND_FLOW} >> ${CONTROL_PIPE}
		;;
	"run"|"RUN")
		echo ${COMMAND_RUN} >> ${CONTROL_PIPE}
		;;
	"reboot"|"REBOOT")
		echo ${COMMAND_REBOOT} >> ${CONTROL_PIPE}
		;;
	*)
		usage
		exit 1
		;;
esac


exit 0
