#!/usr/bin/env bash
# See https://github.com/polybar/polybar-scripts/pull/237

bluetooth_print() {
	bluetoothctl | while read -r; do
		if [[ "$(systemctl is-active "bluetooth.service")" = "active" ]]; then

			devices_paired=$(
				echo paired-devices \
				| bluetoothctl \
				| sed -n '/paired-devices/,$p' \
				| grep Device \
				| cut -d ' ' -f 2
			)
			counter=0

			echo "$devices_paired" | while read -r line; do
				device_info=$(echo "info $line" | bluetoothctl)

				if echo "$device_info" | grep -q "Connected: yes"; then
					device_alias=$(
						echo "$device_info" \
						| grep "Alias" \
						| cut -d ' ' -f 2-
					)

					if [[ $counter -gt 0 ]]; then
						printf ", %s" "$device_alias"
					else
						printf ": %s" "$device_alias"
					fi

					counter=$((counter + 1))
				fi
			done

			if echo show | bluetoothctl | grep -q "Powered: no"; then
				printf ''
			fi
			printf '\n'
		else
			echo ""
		fi
	done
}

bluetooth_toggle() {
	if echo show | bluetoothctl | grep -q "Powered: no"; then
		echo "power on" | bluetoothctl >> /dev/null
		sleep 1

		devices_paired=$(
			echo paired-devices
			| bluetoothctl \
			| sed -n '/paired-devices/,$p' \
			| grep Device \
			| cut -d ' ' -f 2
		)
		echo "$devices_paired" | while read -r line; do
			echo "connect $line" | bluetoothctl >> /dev/null
		done
	else
		devices_paired=$(
			echo paired-devices \
			| bluetoothctl \
			| sed -n '/paired-devices/,$p' \
			| grep Device \
			| cut -d ' ' -f 2
		)
		echo "$devices_paired" | while read -r line; do
			device_info=$(echo "info $line" | bluetoothctl)

			if echo "$device_info" | grep -q "Connected: yes"; then
				echo "disconnect $line" | bluetoothctl >> /dev/null
			fi
		done

		echo "power off" | bluetoothctl >> /dev/null
	fi
}

case "$1" in
	--toggle)
		bluetooth_toggle
		;;
	*)
		bluetooth_print
		;;
esac