#!/bin/sh
checkMetadata() {
	ffprobe "$1" 2>&1 | grep -e artist -e title
	while true; do
		read -p "correct metadata? [Y] | [n]: "  yn
		case "$yn" in
			[Yy]* ) return 0;;
			[Nn]* ) return 1;;
			* ) echo "Please answer yes or no.";;
		esac
	done
}
cd ~/Musik/2020
file_name=`youtube-dl "ytsearch:$1 lyrics" \
	--extract-audio \
   --output '%(title)s.%(ext)s' \
   --metadata-from-title "%(artist)s - %(title)s" \
   --audio-quality 0 \
   --audio-format mp3 \
   --embed-thumbnail \
   --add-metadata \
   |awk '$1 == "[ffmpeg]" && $2 == "Destination:" {print substr($0, index($0,$3))}'`
r128gain "$file_name" > /dev/null
temp_dir="/tmp/idntag$(xxd -u -l 16 -p /dev/urandom)"
mkdir "$temp_dir"
temp_file="$temp_dir/$file_name"
cp "$file_name" "$temp_file"
idntag "$temp_file" > /dev/null
temp_file=$(echo "$temp_dir"/*)
if checkMetadata "$temp_file"; then
	cp "$temp_file" .
	rm "$file_name"
elif ! checkMetadata "$file_name"; then
	echo "enter it manually"
fi