mpv-play-pause

#!/usr/bin/env bash
# keeps track of which sockets were recently
# paused by this script
#
# if that socket can be resumed, does that
# else, tries to look for another paused
# mpv instance and resumes that

readonly last_playing="${TMPDIR:-/tmp}/mpv-recently-paused"
declare -a currently_playing all_sockets

toggle() {
	mpv-communicate "$1" 'cycle pause'
	return $?
}

IFS=$'\n'
# if something is playing, stop it and link it to /tmp/mpv-recently-paused
# shellcheck disable=SC2207
if currently_playing=($(mpv-currently-playing --socket)); then
	rm -f "${last_playing}"
	# get the most recently launched currently playing mpv instance
	most_recent="${currently_playing[-1]}"
	echo "Pausing ${most_recent}..."
	toggle "${most_recent}" || exit $?
	ln -s "${most_recent}" "${last_playing}"
else
	# nothing is playing, try to start '/tmp/mpv-recently-paused' if that mpv instance is still active
	if toggle "${last_playing}"; then
		echo 'Found recently paused socket, resuming...'
	else
		echo "Couldn't start a recently paused socket..." >&2
		echo 'Starting the most recent mpv instance, if one exists...'
		if all_sockets=($(mpv-active-sockets)); then
			most_recent="${all_sockets[-1]}"
			if toggle "${most_recent}"; then
				echo 'Success!'
			else
				echo 'Failed...' >&2
				exit 1
			fi
		else
			echo 'No active mpv instances... exiting' >&2
			exit 1
		fi
	fi
fi