#!/bin/bash

file=$1

if [ -z "$1" ] ; then
        echo Usage: $0 FILENAMES
        exit 1
fi

for windows_path in $(ls $file); do
	echo "processing $windows_path"
	windows_filename=$(basename $windows_path)
	final_filename=$(echo $windows_filename | sed s/W/U/g)
	backup_filename=$(echo $windows_filename | sed s/W/L/g)
	input_directory=$(dirname $windows_path)
	final_path="${input_directory}/${final_filename}"
        #output_file=`echo "$input_file" | sed 's/-\([0-9]*\)\.m4a/_\1\.m4a/g'`
	if [ -f "$final_path" ] ; then
		backup_path="${input_directory}/${backup_filename}"
		echo "exists, backup"
		mv -n $final_path $backup_path
	fi
        mv -n $windows_path $final_path
done