VMusic - An advanced VK music finder/player in bash

vmusic.sh

#!/bin/bash
PLAYER="mpg123 --utf8 --long-tag"
VMPID="/tmp/vmusic_mainpid"
PLAYERPID="/tmp/vmusic_playerpid"
VMTRACK="/tmp/vmusic_trackurl"
VMINFO="/tmp/vmusic_trackinfo"
SELFNAME="$0"
fetch() {
	ACCESS_TOKEN='8426e7c42b7136646ac0c655ea0c09ad97bd80919a04a28d2e5a7860ab10862c3ac4805f27a75e096a589'
	ENDPOINT="https://api.vk.com/method/audio.search"
	URLLIST=$(curl -s -G --data-urlencode "q=${@// /+}" -d "access_token=${ACCESS_TOKEN}&count=200" $ENDPOINT|grep -Po '"url":".+?"'|grep -Poi '(?<=:")http.+(?=\?)')
	for url in $URLLIST; do echo $(eval "echo $url");done
}
playdaemon() {
	for track in $1; do
		echo $track>$VMTRACK
		$PLAYER $track > $VMINFO 2>&1 &
		echo $!>$PLAYERPID
		wait $!
	done </dev/null >/dev/null 2>&1
	$SELFNAME stop >/dev/null 2>&1
}
case "$1" in
play)
	[ -e "$VMPID" ] && $SELFNAME stop
	echo "Playing the tracks for \"$2\" in VMusic..."
	TRACKS=$(fetch "$2")
	playdaemon "$TRACKS" & </dev/null >/dev/null 2>&1
	disown -a
	echo $!>$VMPID
	;;
skip)
	[ ! -e "$VMPID" ] && echo "VMusic is already stopped" && exit 1
	echo "Skipping current track..."
	[ -e "$PLAYERPID" ] && kill -9 $(<$PLAYERPID) >/dev/null 2>&1
	sleep 0.5 && [ -n "$($SELFNAME info)" ] && echo "Playing $($SELFNAME info)"
	;;
stop)
	[ -e "$VMPID" ] && kill -9 $(<$VMPID)
	[ -e "$PLAYERPID" ] && kill -9 $(<$PLAYERPID)
	rm -f $VMPID $PLAYERPID $VMTRACK $VMINFO
	echo "Stopped VMusic"
	;;
info)
	[ ! -e "$VMINFO" ] && echo "" && exit 1
	RAWINFO=$(<$VMINFO)
	TITLE=$(echo $(echo "$RAWINFO"|grep Title|grep -Po '(?<=:\s).*'))
	ARTIST=$(echo $(echo "$RAWINFO"|grep Artist|grep -Po '(?<=:\s).*'))
	[ -z "$ARTIST" ] && [ -z "$TITLE" ] && TRACKINFO="" || TRACKINFO="$ARTIST - $TITLE"
	echo ${TRACKINFO}
	;;
dl)
	[ -z $2 ] && DLDIR=~ || DLDIR="$2"
	echo "Downloading current track to ${DLDIR}..."
	cd $DLDIR
	CURTRACK="$($0 info)"
	[ -z "$CURTRACK" ] && curl -s -O $(<$VMTRACK) || curl -s -o "${CURTRACK}.mp3" $(<$VMTRACK)
	;;
*)
	echo "Usage: $0 {play|skip|stop|info|dl}"
	exit 1
esac