#!/bin/bash

exithook()
{
    rm -f $TMP $BSTMP
}

BINDIR=$(cd $(dirname $0) && pwd)
if [ -r ${BINDIR}/common.sh ]
then
    . ${BINDIR}/common.sh
else
    . /usr/share/apt-zip/common.sh
fi

# Find block size on zip
BSTMP=$(tempfile -d $MEDIUM -p aptzip)
if [ $? != 0 ]
then
    error "Could not create temporary file"
fi

echo "bs test" > $BSTMP
BLOCKSIZE=$(du -b $BSTMP | cut -f1)
rm $BSTMP
#echo >&2 "Block size = $BLOCKSIZE"

TMP=$(tempfile -p aptzip)
apt-get ${APTGETEXTRAOPTS} -qq --print-uris dselect-upgrade | tr -d "'" >$TMP
if [ $? != 0 ]
then
    error "apt-get failed"
fi

#  SIZE=$(
#      cut -d' ' -f3 <$TMP |
#      {
#  	_SZ=0
#  	while read val
#  	do
#  	    nblocks=$[ ( $val / $BLOCKSIZE ) + 1 ]
#  #	    _SZ=$[ $_SZ + $val ]
#  	    _SZ=$[ $_SZ + $nblocks ]
#  	done
#  	echo $_SZ
#      }
#  )

# Check requested size against free space
#SIZE0=$(echo 'n' | apt-get ${APTGETEXTRAOPTS} dselect-upgrade | grep '^Need to get' | cut -d' ' -f4)

#error "Size0 = $SIZE0 - Size = $SIZE blocks = $[ $SIZE * $BLOCKSIZE ]"

# Write the script
SCRIPT=${MEDIUM}/fetch-script-$METHOD-$(uname -n)

# --print-uris shows: URI filename size-in-bytes md5
$FILTER <$TMP >$SCRIPT
if [ $? != 0 ]
then
    echo >&2 "WARNING: an error occured in the $SCRIPT script"
    exit 1
fi
