#!/usr/bin/env bash

# Joe Gillotti - 3/8/2012

set +o posix

if [ $# -ne 2 ]; then
	echo usage $0 sourceFolder destFolder
	exit 1
fi

metaflac=/usr/bin/metaflac
flac=/usr/bin/flac
lame=/usr/bin/lame

quality="-V 0"

folder=$1
out=$2

mkdir -p "$out"

while read -rd $'\0' file; do
	echo Starting `basename "$file"`
	while read line; do
		key=`echo $line | cut -d\  -f 2  | cut -d= -f 1`
		val=`echo $line | cut -d= -f 2`
		case $key in 
			ARTIST) artist=$val ;;
			TITLE) title=$val ;;
			ALBUM) album=$val ;;
			GENRE) genre=$val ;;
			DATE) year=$val ;;
			TRACKNUMBER) num=$val ;;
		esac
	done < <($metaflac --list --block-type VORBIS_COMMENT "$file" | grep 'comment\[' | tr \" \')
	outfile="$out/$num $title.mp3"
	$flac -d "$file" -c | $lame $quality -r --tt "$title" \
		--ta "$artist" --tl "$album" --ty "$year" --tn "$num" --tg "$genre"  - "$outfile"
	echo
done < <(find "$folder" -type f -iname '*.flac' -print0)