#!/bin/sh

_usage() {
	cat<<EOF
Usage: ${0##*/} FOLDERS

Print audio files found in FOLDERS with
- constant bitrate;
- embedded covers;
- leading zeros in tags.
EOF
}

if [ $# -eq 0 ] || [ "$1" = "-h" ]; then
	_usage
	exit
fi

if ! command -v mediainfo >/dev/null 2>&1; then
	echo >&2 "mediainfo required."
	exit 1
fi

for j; do
	while IFS= read -r i; do
		BUFFER="$(mediainfo "$i")"
		echo "$BUFFER" | grep -q "Bit rate mode *: Constant" && echo "$i : CBR"
		echo "$BUFFER" | grep -q "Cover *: Yes" && echo "$i : Cover"
		echo "$BUFFER" | grep -q "Track name/Position *: 0+" && echo "$i : Leading zeros"
	done <<EOF
$(find "$j"  \( \
		-iname '*.mp3'  -o \
		-iname '*.flac' -o \
		-iname '*.wv'   -o \
		-iname '*.aac'  -o \
		-iname '*.wav'  -o \
		-iname '*.wma'  -o \
		-iname '*.ogg'  -o \
		-iname '*.ac3'  -o \
		-iname '*.dts'  -o \
		-iname '*.ape'  -o \
		-iname '*.mpc' \) )
EOF
done