I did it for the lulz!

yt-music

@@ -1,14 +1,80 @@
 #!/bin/sh
-# download/stream high quality mp3 music from youtube using ytmp3.com site
-#this script give link which can be used to download or stream music
 
-[ -z "$*" ] && id=$(printf "" | dmenu -p "Paste yt-link(ctrl + y):") || id=$*
-id=$(printf "$id" | cut -d"=" -f2 | cut -d"/" -f4)
-printf "\033[1;34mFetching page"
-token=$(curl -s "https://ytmp3x.com/$id" | sed -nE 's/.*token":"(.*)","adg.*/\1/p')
-printf "\33[2K\r\033[1;35mFetching tokens"
-[ -z "$token" ] || token2=$(curl -s -X POST -H "X-Requested-With:XMLHttpRequest" 'https://ytmp3x.com/ajax' -d "purpose=audio&token=$token" | sed -nE 's/.*audio":"(.*)"\}/\1/p')
-printf "\33[2K\r\033[1;36mFetching mp3 link"
-[ -z "$token2" ] || url=$(curl -s -X POST -H "X-Requested-With:XMLHttpRequest" "https://ytmp3x.com/ajax" -d "purpose=download&token=$token2&b=320&r=https://ytmp3x.com/$id" | tr -d '\\' | sed -nE 's/.*mp3url":"(.*)"\}/\1/p')
-[ -z "$url" ] && printf "\33[2K\r\033[1;31m unable to fetch mp3 link\033[0m" && exit 0
-printf "\32[2K\r\033[0m %s\n" "$url"
+loop(){
+	while true;do 
+		sleep 4
+		pos=$(echo '{ "command": ["get_property", "time-remaining"]}' | socat - /tmp/mpvsocket | sed -nE 's_.*data":([^\.]*).*_\1_p')
+		while [ -n "$pos" ];do
+			pos=$(echo '{ "command": ["get_property", "time-remaining"]}' | socat - /tmp/mpvsocket | sed -nE 's_.*data":([^\.]*).*_\1_p')
+			[ -z "$1" ] || printf "\033[2K\r$pos"
+			sleep 2
+		done
+		pos=$(echo '{ "command": ["get_property", "time-remaining"]}' | socat - /tmp/mpvsocket | sed -nE 's_.*data":([^\.]*).*_\1_p')
+		[ -z "$pos" ] && pgrep mpv > /dev/null && play "$(cat "$logdir/next" | sed -n 2p | cut -f2)"
+	done
+}
+
+play(){
+	id=$(printf "$1" | cut -d"=" -f2 | cut -d"/" -f4 | cut -d'&' -f1)
+	[ -z "$id" ] && printf "[ youtube ] Invalid link\n" && exit 1
+	json="{
+	  \"context\": {
+	    \"client\": {
+	      \"clientName\": \"ANDROID\",
+	      \"clientVersion\": \"17.31.35\",
+	      \"androidSdkVersion\": 30,
+	      \"userAgent\": \"$agent\",
+	      \"hl\": \"en\",
+	      \"timeZone\": \"UTC\",
+	      \"utcOffsetMinutes\": 0
+	    }
+	  },
+	  \"videoId\": \"$id\",
+	  \"playbackContext\": {
+	    \"contentPlaybackContext\": {
+	      \"html5Preference\": \"HTML5_PREF_WANTS\"
+	    }
+	  },
+	  \"contentCheckOk\": true,
+	  \"racyCheckOk\": true
+	}"
+	
+	#main logic
+	curl -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.115 Safari/537.36" -s "https://www.youtube.com/watch?v=$id&bpctr=9999999999&has_verified=1" -c "$cookie" | sed 's/compactVideoRenderer/\n/g' | sed -nE 's_.*videoId":"([^"]*)".*label":"([^"]*)".*_\2\t\1_p' | sed "/$id/d" > "$next_data"
+	data=$(curl -X POST -A "$agent" -s "https://www.youtube.com/youtubei/v1/player?key=AIzaSyA8eiZmM1FaDVjRy-df2KTyQ_vz_yYM39w&prettyPrint=false" -H "content-type:application/json" -H "x-youtube-client-name:21" -H "x-youtube-client-version:17.31.35" -d "$json" -b "$cookie" | sed -nE 's_.*itag":[0-9]*,"url":"([^"]*)".*"title":"([^"]*)".*_\1\n\2_p')
+	title=$(printf "%s" "$data" | tail -1)
+	audio_url=$(printf "%s" "$data" | head -1)
+	
+	printf "Name >> %s\n" "$title"
+	printf "referer >> %s\n" "$*"
+	printf "Audio URL >> %s\n" "$audio_url"
+	
+	curl -s "https://i.ytimg.com/vi/$id/default.jpg" -o "$logdir/default.jpg" && notify-send -i "$logdir/default.jpg" "Now Playing" "$title" -t 5000
+	pgrep mpv > /dev/null || (setsid -f mpv --really-quiet --input-ipc-server=/tmp/mpvsocket --idle --quiet >/dev/null && sleep 3)
+	echo "{ \"command\": [\"loadfile\", \"$audio_url\", \"replace\"] }" | socat - /tmp/mpvsocket
+	echo "currently playing : $title" > "$logdir/current"
+}
+
+search(){
+	context=$(curl -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.115 Safari/537.36" -s "https://www.youtube.com/" -c "$cookie" | sed -nE 's|.*INNERTUBE_CONTEXT":(.*),"INNERTUBE_CONTEXT_CLIENT_NAME.*|\1|p')
+
+	json_search="{
+	\"context\" : $context,
+	\"query\": \"$1\",
+	\"params\": \"EgWKAQIIAWoKEAMQBBAJEAoQBQ%3D%3D\"
+	}"
+	curl -X POST -A "$agent" -s "https://www.youtube.com/youtubei/v1/search?key=AIzaSyA8eiZmM1FaDVjRy-df2KTyQ_vz_yYM39w&prettyPrint=false" -H "content-type:application/json" -H "x-youtube-client-name:21" -H "x-youtube-client-version:17.31.35" -d "$json_search" -b "$cookies" | sed 's/videoRenderer/\n/g' | sed -nE 's_.*videoId":"([^"]*)".*\],"accessibility":\{"accessibilityData":\{"label":"([^"]*)".*_\2\t\1_p' | bemenu --fn 'Roboto 15' -i -c -W 0.5 -B 3 -p "Play: " -l 30 | cut -f2
+}
+
+search_play(){
+	res=$(search "$1")
+	play "$res"
+}
+
+logdir="${XDG_CACHE_HOME:-$HOME/.cache/yt-music}"
+[ -d "$logdir" ] || mkdir "$logdir"
+cookie="$logdir/cookies"
+next_data="$logdir/next"
+agent="com.google.android.apps.youtube.music/5.16.51 (Linux; U; Android 1$(head /dev/urandom | tr -dc '0-3' | cut -c1)) gzip"
+
+$1 "$2"