Music Player Daemon Discord rich presence shell script

mpdrp.sh

#!/bin/dash
# MPD Discord Rich Presence
# Requires github.com/Pigpog/discord-rich-presence-cli

timecalc(){
	echo "$(date +'%s') + ((($3 * 60) + $4) - (($1 * 60) + $2))" | bc
}

{
# Application ID
echo 838256184724029450;

while [ 0 ]; do
	PLAYING="$(mpc current)";
	# If playback is stopped
	[ -z "$PLAYING" ] && echo && PLAYING="$(mpc -w current)";
	# Details and State
	echo $PLAYING | sed 's/ - /\n/' | tac;
	# Large image key
	echo mpd;
	# Small image key
	STATUS="$(mpc status | grep "\[playing\]")" && echo "playing" || {
		echo "paused";
		sleep 10s && echo &
		mpc idle player > /dev/null && kill -15 $! &
	}
	# Start timestamp
	echo 0;
	# End timestamp
	[ ! -z "$STATUS" ] && timecalc $(echo "$STATUS" | cut -f4- -d\ | tr ':/' ' ') || echo "0";
	# Wait for changes
	mpc idle player > /dev/null;
done;
} | ~/src/discord-rich-presence-cli/send-presence