dotfiles/.config/shell/music

export AUDIO="$DATA/audio"
MUSIC_RAW="$AUDIO/songs/_raw"

alias scbra='scpr zebra "/srv/funkwhale/data/music${PWD/$MUSIC}"'

findsongs() {
	find -regextype posix-extended -maxdepth 1 -type f \
		-regex "${1:-.*\.(mp3|flac|wav|m4a)}" -printf "%P\n"
}

addmix() {
	mv -v "$1.cue" "$AUDIO/recordings/cues"
	addsong "$1.flac" Mixes
}

addsong() {
	test "$1" = "-q" && shift && quick="true"

	local raw="${1%.*}"
	local isflac=$(case "$1" in *.flac) echo "true";; esac)
	test "$isflac" || (echo "Converting to flac..." && flac "$1" --totally-silent)

	test "$quick" || (echo "Press ENTER when the metadata of the flac file is correct..." && read)

	echo "Converting to mp3..."
	lame -V0 "$1" --silent

	mkdir -p "$MUSIC/$2"
	mkdir -p "$MUSIC_RAW/$2"

	local destination="$MUSIC/$2/$raw.mp3"
	echo "Moving mp3 with metadata to $destination"
	ffmpeg -i "$raw.mp3" -i "$raw.flac" -c copy -map_metadata 1 "$destination" -v warning "${@:3}" && rm "$raw.mp3"
	test ! "$PWD" -ef "$MUSIC_RAW/$2" && mv -v "$raw.flac" "$MUSIC_RAW/$2" && (test "$isflac" || rm -v "$1")
}

addalbum() {
	mkdir -p "$MUSIC/$1"
	mkdir -p "$MUSIC_RAW/$1"
	f1 -regextype posix-extended -type f -regex "\./(cover|folder)\.(png|jpg|jpeg)" |
		while read cover; do
			foundcover="true"
			cp -v "$cover" "$MUSIC/$1" &&
			mv -v "$cover" "$MUSIC_RAW/$1"
		done
	test "$foundcover" || f1 -regextype posix-extended -type f -regex ".*\.(png|jpg|jpeg)" |
		while read cover; do
			cp -v "$cover" "$MUSIC/$1" &&
			mv -v "$cover" "$MUSIC_RAW/$1"
		done

	IFS=$'\n'
	for s in $(findsongs ".*\.(flac|wav)"); do
		highlight "$s"
		addsong -q "$s" "$1" "${@:2}"
	done
	unset IFS
}

formatsongs() {
	(
	find -maxdepth 1 -type d | formatin
	find "$@" "$PWD" -type d | while read d;
		do builtin cd $d && findsongs | formatin
		done
	)
	# fd --no-ignore-vcs --type f --extension opus --exec opusdec --quiet "{}" "{.}.wav" \; ".*" "$@"
	find "$@" -type f -name "*.wav" -exec sh -c '
		f="{}" &&
		echo "Converting $f to ${f%.*}.flac" &&
		ffmpeg -i "$f" "${f%.*}.flac" -v warning &&
		mv -v "$f" /tmp' \;
}

# Normalize filenames for files given from stdin
formatin() {
	while read song; do
		new="$(formatsong "$song")"
		test "$new" && test "$new" != "$song" && mv -iv "$song" "$new"
	done
}

# Normalize the given filename
formatsong() {
	echo "$1" | sed -e 's/\b\(ft\|Ft\|Feat\|featuring\)\([ .]\)/feat\2/;
		s/\bfeat /feat. /;
		s/ [[(]\(Free Download\|Original Mix\|Original\|Full Stream\|NCS Release\)[])]//i;
		s/ (\(Acoustic\|Live\))/ [\1]/i;
		s/ \[\(feat.*\)\]/ (\1)/i;
		s/^\([A-z]\+\) The \([^-]\+\)$/\1, the \2/g;
		s/ \(\..\{2,4\}\)$/\1/;
		s/---/ - /;
		s/^[0-9]\{6\}_//;
		s/\([^/]\)_/\1 /g;
		s/ \././g;
		s/  / /g;
		s/\(\w\)+\(\w\)/\1 \2/g' -
}