#!/bin/bash
#
# Copyright (c) 2019 by Thomas A. Early N7TAE
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

trap ControlC INT

ControlC () {
	echo "caught SIGINT"
}

InstallMMDVMHosts () {
	if [ $nmmdvm -gt 0 ] && [ -e ${MMPATH}/MMDVMHost ]; then
		if [ $nmmdvm -eq 1 ]; then
			sudo make ${1}installmmdvm
		else
			sudo make MODULE=${ammdvm[0]} ${1}installmmdvm
			sudo make MODULE=${ammdvm[1]} ${1}installmmdvm
			if [ $nmmdvm -eq 3 ]; then
				sudo make MODULE=${advap[2]} ${1}installmmdvm
			fi
		fi
	fi
}

InstallSystem () {
	local n
	if [ -z ${1} ]; then
		n=$( grep '^processor' /proc/cpuinfo | wc -l )
		echo "Detected $n processors for make"
		make base -j$n
	fi
	sudo make ${1}installbase
	if [ $ndvap -gt 0 ]; then
		if [ -z ${1} ]; then
			make qndvap -j$n
		fi
		if [ $ndvap -eq 1 ]; then
			sudo make ${1}installdvap
		else
			sudo make MODULE=${advap[0]} ${1}installdvap
			sudo make MODULE=${advap[1]} ${1}installdvap
			if [ $ndvap -eq 3 ]; then
				sudo make MODULE=${advap[2]} ${1}installdvap
			fi
		fi
	fi
	if [ $ndvrptr -gt 0 ]; then
		if [ -z ${1} ]; then
			make qndvrptr -j$n
		fi
		if [ $ndvrptr -eq 1 ]; then
			sudo make ${1}installdvrptr
		else
			sudo make MODULE=${advrptr[0]} ${1}installdvrptr
			sudo make MODULE=${advrptr[1]} ${1}installdvrptr
			if [ $ndvrptr -eq 3 ]; then
				sudo make MODULE=${advrptr[2]} ${1}installdvrptr
			fi
		fi
	fi
	if [ $nitap -gt 0 ]; then
		if [ -z ${1} ]; then
			make qnitap -j$n
		fi
		if [ $nitap -eq 1 ]; then
			sudo make ${1}installitap
		else
			sudo make MODULE=${aitap[0]} ${1}installitap
			sudo make MODULE=${aitap[1]} ${1}installitap
			if [ $nitap -eq 3 ]; then
				sudo make MODULE=${aitap[2]} ${1}installitap
			fi
		fi
	fi
	if [ $nmmdvm -gt 0 ]; then
		if [ -z ${1} ]; then
			make qnrelay -j$n
		fi
		if [ $nmmdvm -eq 1 ]; then
			sudo make ${1}installrelay
		else
			sudo make MODULE=${ammdvm[0]} ${1}installrelay
			sudo make MODULE=${ammdvm[1]} ${1}installrelay
			if [ $nmmdvm -eq 3 ]; then
				sudo make MODULE=${advap[2]} ${1}installrelay
			fi
		fi
	fi
	if [ $nmodem -gt 0 ]; then
		if [ -z ${1} ]; then
			make qnmodem -j$n
		fi
		if [ $nmodem -eq 1 ]; then
			sudo make ${1}installmodem
		else
			sudo make MODULE=${amodem[0]} ${1}installmodem
			sudo make MODULE=${amodem[1]} ${1}installmodem
			if [ $nmmdvm -eq 3 ]; then
				sudo make MODULE=${amodem[2]} ${1}installmodem
			fi
		fi
	fi
}

BaseStatus () {
	local LoadGate SubGate LoadLink SubLink LoadDTMF SubDTMF
	LoadGate=$( systemctl show -p LoadState --value qngateway )
	SubGate=$( systemctl show -p SubState --value qngateway )
	LoadLink=$( systemctl show -p LoadState --value qnlink )
	SubLink=$( systemctl show -p SubState --value qnlink )
	LoadDTMF=$( systemctl show -p LoadState --value qndtmf )
	SubDTMF=$( systemctl show -p SubState --value qndtmf )
	if [[ $LoadGate == 'loaded' ]]; then
		if [[ $SubGate == 'running' ]]; then
			GateState='running'
		else
			GateState='stopped'
		fi
	else
		GateState='not installed'
	fi
	echo "QetGateway is $GateState"
	if [[ $LoadLink == 'loaded' ]]; then
		if [[ $SubLink == 'running' ]]; then
			LinkState='running'
		else
			LinkState='stopped'
		fi
	else
		LinkState='not installed'
	fi
	echo "QetLink is $LinkState"
	if [[ $LoadDTMF == 'loaded' ]]; then
		if [[ $SubDTMF == 'running' ]]; then
			DTMFState='running'
		else
			DTMFState='stopped'
		fi
	else
		DTMFState='not installed'
	fi
	echo "DTMF is $DTMFState"
}

ModuleStatus () {
	local LoadState SubState mcvar
	if [ -z ${3} ]; then
		ModuleState[$1]='EMPTY'
		MMDVMState[$1]='EMPTY'
	else
		mcvar="n${3}"
		ModuleProcess[$1]="qn$3"
		if [[ "${ModuleProcess[$1]}" == 'qnmmdvmhost' ]]; then
			ModuleProcess[$1]='qnrelay'
			MMDVMProcess[$1]='mmdvm'
			MMDVMState[$1]='not installed'
		elif [[ "${ModuleProcess[$1]}" == 'qnmmdvmmodem' ]]; then
			ModuleProcess[$1]='qnmodem'
			MMDVMProcess[$1]=''
			MMDVMState[$1]='EMPTY'
		else
			MMDVMState[$1]='EMPTY'
			MMDVMProcess[$1]=''
		fi
		if [[ ${!mcvar} > 1 ]]; then
			ModuleProcess[$1]="${ModuleProcess[$1]}${2}"
			if [[ "${MMDVMProcess[$1]}" == 'mmdvm' ]]; then
				MMDVMProcess[$1]="${MMDVMProcess[$1]}${2}"
			fi
		fi
		LoadState=$( systemctl show -p LoadState --value ${ModuleProcess[$1]} )
		SubState=$( systemctl show -p SubState --value ${ModuleProcess[$1]} )
		if [[ "$LoadState" == "loaded" ]]; then
			if [[ $SubState == "running" ]]; then
				ModuleState[$1]='running'
			else
				ModuleState[$1]='stopped'
			fi
		else
			ModuleState[$1]='not installed'
		fi
		if [[ "${MMDVMState[$1]}" != 'EMPTY' ]]; then
			LoadState=$( systemctl show -p LoadState --value ${MMDVMProcess[$1]} )
			SubState=$( systemctl show -p SubState --value ${MMDVMProcess[$1]} )
			if [[ "$LoadState" == "loaded" ]]; then
				if [[ $SubState == "running" ]]; then
					MMDVMState[$1]='running'
				else
					MMDVMState[$1]='stopped'
				fi
			else
				MMDVMState[$1]='not installed'
			fi
		fi
		if [[ "$3" == 'mmdvmhost' ]]; then
			echo "Module ${2^^} - ${ModuleProcess[$1]} is ${ModuleState[$1]} - ${MMDVMProcess[$1]} is ${MMDVMState[$1]}"
		else
			echo "Module ${2^^} - ${ModuleProcess[$1]} is ${ModuleState[$1]}"
		fi
	fi
}

Header () {
	local count
	count=$( ps -aux | grep -e qn -e MMDVMHost | wc -l )
	if [ ${count} -gt 3 ]; then
		echo
		echo "USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND"
		ps -aux | grep -e qngateway -e qnlink -e qndtmf -e qndvap -e qnitap -e qnrelay -e qndvrptr -e qnmodem -e MMDVMHost | grep -v grep
	fi
	echo
}

LogMenu () {
	ans=''
	while [[ "$ans" != q* ]]; do
		clear
		echo "            Log Menu"
		Header
		echo "After starting a log, use <Ctrl>+C to stop the log and return to this menu."
		echo
		if [[ $GateState == 'running' ]]; then
			echo " g  : qngateway Log"
		else
			echo "      qngateway is not running"
		fi
		if [[ $LinkState == 'running' ]]; then
			echo " l  : qnlink Log"
		else
			echo "      qnlink is not running"
		fi
		if [[ $DTMFState == 'running' ]]; then
			echo " d  : qndtmf Log"
		else
			echo "      qndtmf is not running"
		fi
		if [[ ${ModuleState[0]} != 'EMPTY' ]]; then
			if [[ ${ModuleState[0]} == 'running' ]]; then
				echo " a  : ${ModuleProcess[0]} Log"
			else
				echo "      ${ModuleProcess[0]} is not running"
			fi
		fi
		if [[ ${ModuleState[1]} != 'EMPTY' ]]; then
			if [[ ${ModuleState[1]} == 'running' ]]; then
				echo " b  : ${ModuleProcess[1]} Log"
			else
				echo "      ${ModuleProcess[1]} is not running"
			fi
		fi
		if [[ ${ModuleState[2]} != 'EMPTY' ]]; then
			if [[ ${ModuleState[2]} == 'running' ]]; then
				echo " c  : ${ModuleProcess[2]} Log"
			else
				echo "      ${ModuleProcess[2]} is not running"
			fi
		fi
		if [[ ${MMDVMState[0]} != 'EMPTY' ]]; then
			if [[ ${MMDVMState[0]} == 'running' ]]; then
				echo " x  : ${MMDVMProcess[0]} Log"
			else
				echo "      ${MMDVMProcess[0]} is not running"
			fi
		fi
		if [[ ${MMDVMState[1]} != 'EMPTY' ]]; then
			if [[ ${MMDVMState[1]} == 'running' ]]; then
				echo " y  : ${MMDVMProcess[1]} Log"
			else
				echo "      ${MMDVMProcess[1]} is not running"
			fi
		fi
		if [[ ${MMDVMState[2]} != 'EMPTY' ]]; then
			if [[ ${MMDVMState[2]} == 'running' ]]; then
				echo " z  : ${MDVMProcess[2]} Log"
			else
				echo "      ${MMDVMProcess[2]} is not running"
			fi
		fi
		echo
		echo " q  : quit and return to main menu"
		echo
		read -p "Command: " ans

		if [[ "$ans" == g* ]] && [[ "$GateState" == 'running' ]]; then
			sudo journalctl -u qngateway -f
		elif [[ "$ans" == l* ]] && [[ "$LinkState" == 'running' ]]; then
			sudo journalctl -u qnlink -f
		elif [[ "$ans" == d* ]] && [[ "$DTMFState" == 'running' ]]; then
			sudo journalctl -u qndtmf -f
		elif [[ "$ans" == a* ]] && [[ "${ModuleState[0]}" == 'running' ]]; then
			sudo journalctl -u ${ModuleProcess[0]} -f
		elif [[ "$ans" == b* ]] && [[ "${ModuleState[1]}" == 'running' ]]; then
			sudo journalctl -u ${ModuleProcess[1]} -f
		elif [[ "$ans" == c* ]] && [[ "${ModuleState[2]}" == 'running' ]]; then
			sudo journalctl -u ${ModuleProcess[2]} -f
		elif [[ "$ans" == x* ]] && [[ "${MMDVMState[0]}" == 'running' ]]; then
			sudo journalctl -u ${MMDVMProcess[0]} -f
		elif [[ "$ans" == y* ]] && [[ "${MMDVMState[1]}" == 'running' ]]; then
			sudo journalctl -u ${MMDVMProcess[1]} -f
		elif [[ "$ans" == z* ]] && [[ "${MMDVMState[2]}" == 'running' ]]; then
			sudo journalctl -u ${MMDVMProcess[2]} -f
		fi
	done
	ans=''
}

MaintenanceMenu () {
	local m n
	ans=''
	while [[ "$ans" != q* ]]; do
		clear
		echo "            MaintenanceMenu"
		Header
		if [[ "$GateState" == 'running' ]]; then
			echo " g : Stop  QnetGateway"
		elif [[ "$GateState" == 'stopped' ]]; then
			echo " g : Start QnetGateway"
		fi
		if [[ "$LinkState" == 'running' ]]; then
			echo " l : Stop  QnetLink"
		elif [[ "$LinkState" == 'stopped' ]]; then
			echo " l : Start QnetLink"
		fi
		if [[ "$DTMFState" == 'running' ]]; then
			echo " d : Stop  DTMF"
		elif [[ "$DTMFState" == 'stopped' ]]; then
			echo " d : Start DTMF"
		fi
		if [[ "${ModuleState[0]}" == 'running' ]]; then
			echo " a : Stop  Module A"
		elif [[ "${ModuleState[0]}" == 'stopped' ]]; then
			echo " a : Start Module A"
		fi
		if [[ "${ModuleState[1]}" == 'running' ]]; then
			echo " b : Stop  Module B"
		elif [[ "${ModuleState[1]}" == 'stopped' ]]; then
			echo " b : Start Module B"
		fi
		if [[ "${ModuleState[2]}" == 'running' ]]; then
			echo " c : Stop  Module C"
		elif [[ "${ModuleState[2]}" == 'stopped' ]]; then
			echo " c : Start Module C"
		fi
		if [[ "${MMDVMState[0]}" == 'running' ]]; then
			echo " x : Stop  MMDVMHost A"
		elif [[ "${MMDVMState[0]}" == 'stopped' ]]; then
			echo " x : Start MMDVMHost A"
		fi
		if [[ "${MMDVMState[1]}" == 'running' ]]; then
			echo " y : Stop  MMDVMHost B"
		elif [[ "${MMDVMState[1]}" == 'stopped' ]]; then
			echo " y : Start MMDVMHost B"
		fi
		if [[ "${MMDVMState[2]}" == 'running' ]]; then
			echo " z : Stop  MMDVMHost C"
		elif [[ "${MMDVMState[2]}" == 'stopped' ]]; then
			echo " z : Start MMDVMHost C"
		fi
		echo
		echo " q : Return to main Menu"
		echo
		read -p "Command: " ans

		if   [[ "$ans" == g* ]]; then
			if [[ "$GateState" == 'running' ]]; then
				sudo systemctl stop qngateway
			elif [[ "$GateState" == 'stopped' ]]; then
				sudo systemctl start qngateway
			fi
			BaseStatus
		elif [[ "$ans" == l* ]]; then
			if [[ "$LinkState" == 'running' ]]; then
				sudo systemctl stop qnlink
			elif [[ "$LinkState" == 'stopped' ]]; then
				sudo systemctl start qnlink
			fi
			BaseStatus
		elif [[ "$ans" == d* ]]; then
			if [[ "$DTMFState" == 'running' ]]; then
				sudo systemctl stop qndtmf
			elif [[ "$DTMFState" == 'stopped' ]]; then
				sudo systemctl start qndtmf
			fi
			BaseStatus
		elif [[ "$ans" == a* ]] && [ -n $module_a ]; then
			if [[ "${ModuleState[0]}" == 'running' ]]; then
				sudo systemctl stop ${ModuleProcess[0]}
			elif [[ "${ModuleState[0]}" == 'stopped' ]]; then
				sudo systemctl start ${ModuleProcess[0]}
			fi
			ModuleStatus 0 a $module_a
		elif [[ "$ans" == b* ]] && [ -n $module_b ]; then
			if [[ "${ModuleState[1]}" == 'running' ]]; then
				sudo systemctl stop ${ModuleProcess[1]}
			elif [[ "${ModuleState[1]}" == 'stopped' ]]; then
				sudo systemctl start ${ModuleProcess[1]}
			fi
			ModuleStatus 1 b $module_b
		elif [[ "$ans" == c* ]] && [ -n $module_c ]; then
			if [[ "${ModuleState[2]}" == 'running' ]]; then
				sudo systemctl stop ${ModuleProcess[2]}
			elif [[ "${ModuleState[2]}" == 'stopped' ]]; then
				sudo systemctl start ${ModuleProcess[2]}
			fi
			ModuleStatus 2 c $module_c
		elif [[ "$ans" == x* ]] && [ -n $module_a ]; then
			if [[ "${MMDVMState[0]}" == 'running' ]]; then
				sudo systemctl stop ${MMDVMProcess[0]}
			elif [[ "${MMDVMState[0]}" == 'stopped' ]]; then
				sudo systemctl start ${MMDVMProcess[0]}
			fi
			ModuleStatus 0 a $module_a
		elif [[ "$ans" == y* ]] && [ -n $module_b ]; then
			if [[ "${MMDVMState[1]}" == 'running' ]]; then
				sudo systemctl stop ${MMDVMProcess[1]}
			elif [[ "${MMDVMState[1]}" == 'stopped' ]]; then
				sudo systemctl start ${MMDVMProcess[1]}
			fi
			ModuleStatus 1 b $module_b
		elif [[ "$ans" == z* ]] && [ -n $module_c ]; then
			if [[ "${MMDVMState[2]}" == 'running' ]]; then
				sudo systemctl stop ${MMDVMProcess[2]}
			elif [[ "${MMDVMState[2]}" == 'stopped' ]]; then
				sudo systemctl start ${MMDVMProcess[2]}
			fi
			ModuleStatus 2 c $module_c
		fi
	done
	ans=''
}

GatewayMenu () {
	ans=''
	while [[ "$ans" != q* ]]; do
		local refcount=$( grep -s "^REF" gwys.txt | wc -l )
		local dcscount=$( grep -s "^DCS" gwys.txt | wc -l )
		local xrfcount=$( grep -s "^XRF" gwys.txt | wc -l )
		local repcount=$( grep -s -v "^#" gwys.txt | grep -s -v -e "^REF" -e "^DCS" -e "^XRF" | wc -l )
		clear
		echo
		echo "            Gateway File"
		echo
		echo "     $refcount REF, $dcscount DCS, $xrfcount XRF and $repcount Repeaters"
		echo
		echo "     All initialization will overwrite any existing file!"
		echo "ip : Initialize gwys.txt using www.PiStar.uk/downloads"
		echo "iv : Initialize gwys.txt using VA3UV.com (includes a large # of repeaters)"
		echo "ir : Initialize gwys.txt using VA3UV.com (but just the reflectors)"
		echo "n  : Edit gwys.txt file with nano"
		echo "v  : Edit gwys.txt file with vi"
		echo
		echo "q  : Quit and return to Main Menu"
		echo
		read -p "Command: " ans
		if   [[ "$ans" == ip* ]]; then
			/usr/bin/wget http://www.pistar.uk/downloads/DExtra_Hosts.txt
			/usr/bin/wget http://www.pistar.uk/downloads/DPlus_Hosts.txt
			/usr/bin/wget http://www.pistar.uk/downloads/DCS_Hosts.txt
			/bin/rm -f gwys.txt
			echo "# Downloaded from www.pistar.uk `date`" > gwys.txt
			awk '$1 ~ /^REF/ { printf "%s %s 20001\n", $1, $2 }' DPlus_Hosts.txt >> gwys.txt
			awk '$1 ~ /^XRF/ { printf "%s %s 30001\n", $1, $2 }' DExtra_Hosts.txt >> gwys.txt
			awk '$1 ~ /^DCS/ { printf "%s %s 30051\n", $1, $2 }' DCS_Hosts.txt >> gwys.txt
			/bin/rm -f D{Extra,Plus,CS}_Hosts.txt
		elif [[ "$ans" == iv* ]]; then
			/bin/rm -f gwys.txt
			wget http://www.va3uv.com/gwys.txt
		elif [[ "$ans" == ir* ]]; then
			/bin/rm -f gwys.txt
			/usr/bin/wget -nv -O gwys.va3uv.txt http://www.va3uv.com/gwys.txt
			if [ -e gwys.va3uv.txt ]; then
				echo "# Downloaded from www.va3uv.com `date`" > gwys.txt
				awk '$1~/^REF/{print $1, $2, $3}' gwys.va3uv.txt >> gwys.txt
				awk '$1~/^XRF/{print $1, $2, $3}' gwys.va3uv.txt >> gwys.txt
				awk '$1~/^DCS/{print $1, $2, $3}' gwys.va3uv.txt >> gwys.txt
				rm -f gwys.va3uv.txt
			fi
		elif [[ "$ans" == n* ]]; then
			nano gwys.txt
		elif [[ "$ans" == v* ]]; then
			vi gwys.txt
		fi
	done
	ans=''
}

# get defined modules from the config file
if [ -e qn.cfg ]; then
	source <( grep "^module_[abc]=" qn.cfg )
	if [ -z "$module_a" ] && [ -z "$module_b" ] && [ -z "$module_c" ]; then
		echo "No moudules defined in the qn.cfg file!, please re-edit you configuration."
		exit 1
	fi
else
	echo "ERROR: can't find the qn.cfg configuration file!"
	echo "You can use ./qnconfig to create your config file."
	exit 1
fi

# get the installation directory from the make file
if [ -e makefile ]; then
	MAKEFILE=makefile
elif [ -e Makefile ]; then
	MAKEFILE=Makefile
else
	echo "ERROR: There is no Makefile or makefile"
	exit 1
fi
source <( grep -e '^BINDIR=' -e '^MMPATH=' $MAKEFILE )
if [ -z $BINDIR ]; then
	echo "ERROR: The BINDIR definition in $MAKEFILE is empty!"
	exit 1
fi
if [ ! -d "$BINDIR" ]; then
	echo "ERROR: The BINDIR directory $BINDIR is not a directory!"
	exit 1
fi

ndvap=0
ndvrptr=0
nitap=0
nmmdvm=0
nmodem=0

for m in a b c ; do
	mod=module_${m}
	if [ -z ${!mod} ]; then continue; fi
	type=${!mod}
	if [[ "$type" == 'dvap' ]]; then
		advap[${ndvap}]=${m}
		ndvap=$((ndvap + 1))
	elif [[ "$type" == 'dvrptr' ]]; then
		advrptr[$ndvap]=${m}
		ndvrptr=$((ndvrptr + 1))
	elif [[ "$type" == 'itap' ]]; then
		aitap[${nitap}]=${m}
		nitap=$((nitap + 1))
	elif [[ "$type" == 'mmdvmhost' ]]; then
		ammdvm[${nmmdvm}]=${m}
		nmmdvm=$((nmmdvm + 1))
	elif [[ "$type" == 'mmdvmmodem' ]]; then
		amodem[${nmodem}]=${m}
		nmodem=$((nmodem + 1))
	fi
done

MODULE_COUNT=$((ndvap + ndvrptr + nitap + nmmdvm + nmodem))

while [[ "$ans" != q* ]]; do
	clear
	echo
	echo "            Qnet Administration Menu"
	Header
	BaseStatus
	ModuleStatus 0 a "$module_a"
	ModuleStatus 1 b "$module_b"
	ModuleStatus 2 c "$module_c"
	echo
	if [[ "$GateState" == 'not installed' ]] || [[ "$LinkState" == 'not installed' ]]; then
		if [ -e gwys.txt ]; then
			echo "is : Install configured system"
			echo "gp : Do a 'git pull' to refresh sources"
		else
			echo "     You must set-up your gwys.txt file before installation."
		fi
	else
		echo "us : Uninstall configured System"
	fi
	if [ -e "${MMPATH}/MMDVMHost" ] && [ $nmmdvm -gt 0 ]; then
		if [[ "${MMDVMState[0]}" != 'EMPTY' ]] || [[ "${MMDVMState[1]}" != 'EMPTY' ]] || [[ "${MMDVMState[2]}" != 'EMPTY' ]]; then
			if [[ "${MMDVMState[0]}" == 'not installed' ]] || [[ "${MMDVMState[1]}" == 'not installed' ]] || [[ "${MMDVMState[2]}" == 'not installed' ]]; then
				echo "im : Install MMDVMHost(s)"
			else
				echo "um : Uninstall MMDVMHost(s)"
			fi
		fi
	fi
	echo "gw : Gateway File Menu"
	echo
	if [[ "$DTMFState" == 'not installed' ]]; then
		echo "nd : Edit DTMF file with nano"
		echo "vd : Edit DTMF file with vi"
		if [ -e qndtmf ] && [ -n "`diff -q qndtmf qndtmf.sh`" ]; then
			echo "rd : Restore DTMF file to default (this will overwrite existing DTMF file)"
		fi
		echo "id : Install DTMF"
	else
		echo "ud : Uninstall DTMF"
	fi
	echo
	echo "c  : Clean (remove temporary files and locally built executables)"
	echo
	if [[ "$GateState" != 'not installed' ]] && [[ "$LinkState" != 'not installed' ]]; then
		echo "m  : Maintenance Menu"
		echo "l  : Log Menu"
	fi
	echo
	read -p "q    to quit. Command: " ans

	# EXECUTE COMMANDS
	if   [[ "$GateState" == 'not installed' ]] && [[ "$ans" == is* ]]; then
		InstallSystem
		echo 'Wait for a few seconds for everything to start...'
		sleep 5
	elif [[ "$GateState" != 'not installed' ]] && [[ "$ans" == us* ]]; then
		InstallSystem un
	elif { [[ "${MMDVMState[0]}" == 'not installed' ]] || [[ "${MMDVMState[1]}" == 'not installed' ]] || [[ "${MMDVMState[2]}" == 'not installed' ]]; } && [ -e ${MMPATH}/MMDVMHost ] && [[ "$ans" == im* ]]; then
		InstallMMDVMHosts
	elif { [[ "${MMDVMState[0]}" == 'stopped' ]] || [[ "${MMDVMState[0]}" == 'running' ]] || [[ "${MMDVMState[1]}" == 'stopped' ]] || [[ "${MMDVMState[1]}" == 'running' ]] || [[ "${MMDVMState[2]}" == 'stopped' ]] || [[ "${MMDVMState[2]}" == 'running' ]]; } && [ -e ${MMPATH}/MMDVMHost ] && [[ "$ans" == um* ]]; then
		InstallMMDVMHosts un
	elif [[ "$GateState" == 'not installed' ]] && [[ "$ans" == gp* ]]; then
		git pull
		read -p 'Press <Enter> to continue: ' ans
		ans=''
	elif [[ "$ans" == gw* ]]; then
		GatewayMenu
	elif [[ "$DTMFState" == 'not installed' ]] && [[ "$ans" == nd* ]]; then
		if [ ! -e qndtmf ]; then cp qndtmf.sh qndtmf; fi
		nano qndtmf
	elif [[ "$DTMFState" == 'not installed' ]] && [[ "$ans" == vd* ]]; then
		if [ ! -e qndtmf ]; then cp qndtmf.sh qndtmf; fi
		vi qndtmf
	elif [[ "$DTMFState" == 'not installed' ]] && [ -e qndtmf ] && [ -n "`diff -q qndtmf qndtmf.sh`" ] && [[ "$ans" == rd* ]]; then
		rm -f qndtmf
	elif [[ "$DTMFState" == 'not installed' ]] && [[ "$ans" == id* ]]; then
		if [ ! -e qndtmf ]; then cp qndtmf.sh qndtmf; fi
		sudo make installdtmf
	elif [[ "$DTMFState" != 'not installed' ]] && [[ "$ans" == ud* ]]; then
		sudo make uninstalldtmf
	elif [[ "$ans" == c* ]]; then
		make clean
	elif [[ "$ans" == m* ]]; then
		MaintenanceMenu
	elif [[ "$ans" == l* ]]; then
		LogMenu
	fi
done

exit 0