rofi-jack-connect

#!/usr/bin/env bash
#
########################
# rofi-jack-connect
# by Mads Kjeldgaard
#
# Connect or disconnect jack sources using the rofi menu launcher
#
# Usage: 
# rofi-jack-connect --help
#
#
########################

rofi_command="rofi -theme gruvbox-dark -hide-scrollbar -i -dmenu " 

# Get connections
connect_from=""
connect_to=""

connections=$(jack_lsp)

get_unique_connections(){
	# sed removes the trailing numbers
	# sort removes unique
	unique_connections="$(jack_lsp | sed 's/_[0-9]//g'|sort -u)"
}


# One argument: "multi"
get_connections(){
	get_unique_connections

	# Return early if the above failed
	if [ "$?" == 1 ]; then return 1; fi

	# if [[ "$1" == 'multi' ]]; then

	# Get connection names
	connect_from="$( echo "$connections" | $rofi_command -dmenu -p 'jack_from')"
	
	# Unique is without trailing numbers (for multiple connections)
	unique_from="$(echo "$connect_from" | sed -r 's/_?[0-9]//g')"

	# If no connection chosen or jack not booted, return 1
	if [ -z $connect_from ]; then return 1; fi

	connect_to="$( echo "$connections" | $rofi_command -dmenu -p 'jack_to')"
	unique_to="$(echo "$connect_to" | sed -r 's/_?[0-9]//g')"
}

make_connection(){

	# Exit if nothing is chosen
	if [[ $? -ne 0 ]]; then 
		echo "Error: Could not retrieve connection points."  
		exit; 
	fi

	if [[ "$1" == "connect" ]];
	then 
		echo "Connecting: $connect_from <-> $connect_to"
		jack_connect "$connect_from" "$connect_to"
	elif [[ "$1" == "disconnect" ]];
	then
		echo "Disconnect: $connect_from <-/-> $connect_to"
		jack_disconnect "$connect_from" "$connect_to"
	else
		exit
	fi
}

# Connect multiple sources
make_multi_connection(){
	counter=0
	# -r uses regex extended for optional char
	connections=$(jack_lsp| sed -r 's/_?[0-9]//g'|sort -u)
	get_connections

	for connection_name in $(jack_lsp | grep "$unique_from"); 
		do 
			let counter+=1; 
			delim="_"
			connect_from="$connection_name"
			connect_to="$unique_to$delim$counter"
			# echo "$connect_from to $connect_to"
			make_connection "$1"
		done
}


echo_options(){
	echo "
	A rofi script for making connections using the jack audio routing kit

	If no arguments are supplied, it will toggle between connect and disconnect.

	That is, if a connection is already made between the two nodes specified, it will break that connection and vice versa.

	Optional arguments:

	For single channels
	--connect or -c
	--disconnect or -d

	For all channels in from device
	--connect-all or -ca

	For all channels in from device
	--disconnect-all or -da

	Example

	rofi-jack-connect --connect # Specifically connect the two chosen connection points
	rofi-jack-connect --connect-all # Same as above but with all from device's outputs
	rofi-jack-connect --disconnect # Specifically disconnect the two chosen connection points
	rofi-jack-connect --disconnect-all # Same as above but with all from device's outputs

	rofi-jack-connect # Connect or disconnect depending on status
	"
}

# Using parameters
case $1 in
	# If no arguments are supplied
	"-h")
		echo_options
		;;
	"--help")
		echo_options
		;;
	"")

		get_connections
		make_connection "connect"
		if [[ "$?" == "1" ]]; then 
			echo "Client already connected. Disconnecting instead"
			jack_disconnect $connect_from $connect_to;
		fi
		;;
	"--connect")
		get_connections
		make_connection "connect"
		;;
	"-c")
		get_connections
		make_connection "connect"
		;;
	"--connect-all")
		make_multi_connection "connect"
		;;
	"-ca")
		make_multi_connection "connect"
		;;
	"--disconnect-all")
		make_multi_connection "disconnect"
		;;
	"-da")
		make_multi_connection "disconnect"
		;;
	"--disconnect")
		get_connections
		make_connection "disconnect"
		;;
	"-d")
		get_connections
		make_connection "disconnect"
		;;
esac