#!/bin/bash

type_plain="plain"

usage_plain(){
	cat >&2 <<EOF
Usage: $0 -type plain
	This will save the files in plain view on the medium.
	This way you can view the content on any OS without the
	need to boot the LVP. Of course, you can still do so :)

EOF
}

lvp_copy(){
	src="${1}" ; trg="${2}"
	echo -n "Trying to hardlink ${src} ... "
	if ln "${src}" "${trg}" 2>/dev/null ; then
		echo "ok"
	else
		echo "failed"
		echo -n "Copying ${src} to ${trg} ... "
		if cp "${src}" "${trg}" ; then
			echo "ok"
		else
			echo "failed"
		fi
	fi
}

process_plain(){
	target="livesystem"

	echo -n "Checking necessary filesystem size ... "
	filesize=0

	while read file ; do
		[ ! -f "${file}" ] && continue
		thisfilesize=`ls -l "${file}" | sed 's,[ \t][ \t]*, ,g' | cut -f5 -d' '`
		filesize=$(( ${filesize} + ${thisfilesize} ))
	done < ${moviefiles}

	echo "${filesize} Byte (`human_readable ${size}`)"

	echo -n "Checking Livesystem size ... "
	livesize=`du -sb ${target} | cut -f1`
	echo "`human_readable ${livesize}`"
	filesize=$(( $filesize + $livesize ))
	echo
	echo "Total space needed: $(( ${filesize} / 1024 / 1024 )) MB"

	if [ $(( ${filesize} / 1024 / 1024 )) -gt $size ] ; then
		echo
		echo "This may be more than fits onto your medium."
		echo "You specified ${size} MB to fit onto your medium."
		echo "If you are sure that this is okay, please continue."
		echo "If not, please truncate your filelist."
		confirm "Continue"
		[ ${?} -eq 1 ] && exit 1
	fi

	while read file ; do
		[ ! -f "${file}" ] && continue

		if [ -f "${target}/${file##*/}" ] ; then
			origfilesize=`ls -l "${file}" | sed 's,[ \t][ \t]*, ,g' | cut -f5 -d' '`
			targfilesize=`ls -l "${target}/${file##*/}" | sed 's,[ \t][ \t]*, ,g' | cut -f5 -d' '`

			if [ ${origfilesize} -eq ${targfilesize} ] ; then
				echo "${target}/${file##*/} already exists."
			else
				rm -f "${target}/${file##*/}"
				lvp_copy "${file}" "${target}/${file##*/}"
			fi
		else
			rm -f "${target}/${file##*/}"
			lvp_copy "${file}" "${target}/${file##*/}"
		fi

		environment="`echo ${file} | tr '[. \-!]' '_'`"
		eval "export file_${environment##*/}=\"/${file##*/}\""
	done < ${moviefiles}

	lvpxml=livesystem/lvp.xml
	process_create_lvpxml
}