#!/bin/bash

if [[ "$1" == "-h" ]]
then
    echo "album_seekpoint [-h] | <source_dir> <target_dir> <seek_point_delay>"
    exit
fi

      source_dir="$1"
      target_dir="$2"
seek_point_delay="$3"

for file in ${source_dir}/*.flac
do
	target_file="${target_dir}/$(basename $file)"

	if [[ "${file}" != "${target_file}" ]]
	then
	    cp "${file}" "${target_file}"
	fi

	metaflac --remove --block-type=SEEKTABLE "${target_file}"
	metaflac --add-seekpoint "${seek_point_delay}"s "${target_file}"
done