_tinc() {
	local cur prev opts confvars commands nets
	COMPREPLY=()
	cur="${COMP_WORDS[COMP_CWORD]}"
	prev="${COMP_WORDS[COMP_CWORD-1]}"
	opts="-c -d -D -K -n -o -L -R -U --config --no-detach --debug --net --option --mlock --logfile --pidfile --chroot --user --help --version"
	confvars="Address AddressFamily BindToAddress BindToInterface Broadcast BroadcastSubnet Cipher ClampMSS Compression ConnectTo DecrementTTL Device DeviceStandby DeviceType Digest DirectOnly Ed25519PrivateKeyFile Ed25519PublicKey Ed25519PublicKeyFile ExperimentalProtocol Forwarding GraphDumpFile Hostnames IffOneQueue IndirectData Interface KeyExpire ListenAddress LocalDiscovery MACExpire MACLength MaxOutputBufferSize MaxTimeout Mode MTUInfoInterval Name PMTU PMTUDiscovery PingInterval PingTimeout Port PriorityInheritance PrivateKeyFile ProcessPriority Proxy PublicKeyFile ReplayWindow StrictSubnets Subnet TCPOnly TunnelServer UDPDiscovery UDPDiscoveryKeepaliveInterval UDPDiscoveryInterval UDPDiscoveryTimeout UDPInfoInterval UDPRcvBuf UDPSndBuf UPnP UPnPDiscoverWait UPnPRefreshPeriod VDEGroup VDEPort Weight"
	commands="add connect debug del disconnect dump edit export export-all generate-ed25519-keys generate-keys generate-rsa-keys get help import info init invite join list log network pcap pid purge reload restart retry set sign start stop top verify version"

	case ${prev} in
		-c|--config)
        	compopt -o dirnames 2>/dev/null
		return 0
		;;
		-n|--net)
		nets=""
		pushd /etc/tinc >/dev/null 2>/dev/null
		for dir in *; do
			if [[ -f "$dir/tinc.conf" ]]; then
				nets="$nets $dir"
			fi
		done
		popd >/dev/null 2>/dev/null
		COMPREPLY=( $(compgen -W "${nets}" -- ${cur}) )
		return 0
		;;
		-o|--option)
		compopt -o nospace
		COMPREPLY=( $(compgen -W "${confvars}" -- ${cur}) )
		if [[ ${#COMPREPLY[*]} == 1 ]] ; then
			COMPREPLY=$COMPREPLY=
		fi
		return 0
		;;
		-U|--user)
		COMPREPLY=( $(compgen -u ${cur}) )
		return 0
		;;
		--logfile|--pidfile)
        	compopt -o filenames 2>/dev/null
		COMPREPLY=( $(compgen -f ${cur}) )
		return 0
	esac
	if [[ ${cur} == -* ]] ; then
		COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
		return 0
	fi
	if [[ $1 == "d" ]]; then
		if [[ -z ${cur} ]] ; then 
			COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
		fi
		return 0
	fi
	COMPREPLY=( $(compgen -W "${commands}" -- ${cur}) )
	case $prev in
		get|set|add|del)
		COMPREPLY=( $(compgen -W "${confvars}" -- ${cur}) )
		return 0
		;;
		dump|list|reachable)
		COMPREPLY=( $(compgen -W "reachable nodes edges subnets connections graph invitations" -- ${cur}) )
		return 0
		;;
		network)
		nets=""
		pushd /etc/tinc >/dev/null 2>/dev/null
		for dir in *; do
			if [[ -f "$dir/tinc.conf" ]]; then
				nets="$nets $dir"
			fi
		done
		popd >/dev/null 2>/dev/null
		COMPREPLY=( $(compgen -W "${nets}" -- ${cur}) )
		return 0
		;;
	esac
	if [[ -z ${cur} ]] ; then 
		COMPREPLY=( $(compgen -W "${opts} ${commands}" -- ${cur}) )
	fi
	return 0
}

_tincd() {
	_tinc d;
}

_tincctl() {
	_tinc ctl;
}

complete -F _tincd tincd
complete -F _tincctl tinc