#!/bin/sh
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# any later version.
cDir=$(pwd)

ls -R -l > FILELIST.TXT

function gen_packages_txt {
	echo '' > PACKAGES.TXT
	find . -type f -name '*.meta' -exec cat {} \; >> PACKAGES.TXT
}

function gen_md5_checksums {
	echo '' > CHECKSUMS.md5
	find . -type f -name '*.txz' -exec md5sum {} \; >> CHECKSUMS.md5
}

function rem_meta {
	for file in $(find . -name '*.meta')
	do
		rm -f $file
		echo "Removing $file"
	done
}

function rem_asc {
	for file in $(find . -name '*.asc')
	do
		rm -f $file
		echo "Removing $file"
	done
}

function gen_meta {
	if [ ! -f $1 ]; then
		echo "File not found: $1"
		exit 1;
	fi
		if [ "`echo $1|grep -E '(.*{1,})-(.*[\.\-].*[\.\-].*).txz[ ]{0,}$'`" == "" ]; then
			return;
		fi
	NAME=$(echo $1|sed -re "s/(.*\/)(.*.txz)$/\2/")
	LOCATION=$(echo $1|sed -re "s/(.*)\/(.*.txz)$/\1/")
	SIZE=$( expr `du -b $1 |tail -1|awk '{print $1}'` / 1024 )
	#USIZE=$( expr `gunzip -l $1 |tail -1|awk '{print $2}'` / 1024 )
	# since xz will not list contents we must temporarily unpack the archive to find uncompressed size
	tLOC=`dirname $1`
	
	cd `dirname $1`
	nDir=$(pwd)
	cd $nDir

	n=`basename $1`
	m=`echo $n | sed 's/\.txz/\.tar/'`
	xz -dk $n
	USIZE=$( expr `stat -c%s $m` / 1024 )
	#echo $s
	rm -f $m
	cd $cDir
	REQUIRED=""
	CONFLICTS=""
	SUGGESTS=""
	METAFILE=${NAME%txz}meta
	echo "PACKAGE NAME:  $NAME" > $LOCATION/$METAFILE
	if [ -n "$DL_URL" ]; then
	    echo "PACKAGE MIRROR:  $DL_URL" >> $LOCATION/$METAFILE
	fi
	echo "PACKAGE LOCATION:  $LOCATION" >> $LOCATION/$METAFILE
	echo "PACKAGE SIZE (compressed):  $SIZE K" >> $LOCATION/$METAFILE
	echo "PACKAGE SIZE (uncompressed):  $USIZE K" >> $LOCATION/$METAFILE
	echo "PACKAGE REQUIRED:  $REQUIRED" >> $LOCATION/$METAFILE
	echo "PACKAGE CONFLICTS:  $CONFLICTS" >> $LOCATION/$METAFILE
	echo "PACKAGE SUGGESTS:  $SUGGESTS" >> $LOCATION/$METAFILE
	echo "PACKAGE DESCRIPTION:" >> $LOCATION/$METAFILE
	fn=${1%%.txz}.txt
	cat $fn |grep -E '\w+:'| grep -v '^#' >> $LOCATION/$METAFILE
	echo "" >> $LOCATION/$METAFILE
}

rem_asc
for pkg in `find . -type f -name '*.txz' -print`
do
	# first ensure sane permissions
	chmod 644 $pkg
	gen_meta $pkg
	echo "$pkg Meta Created"
done
echo "Building PACKAGES.TXT"
cd $cDir
gen_packages_txt
echo "Generating MD5SUM file"
gen_md5_checksums
echo "Removing META files"
rem_meta
echo "Creating sorted filelist"
sed -e 's/[a-z,0-9]*[[:space:]]*\.\/slackware64\///' CHECKSUMS.md5 | sort | uniq > PKG_LIST_SORTED
#sed -i /updist/d FILELIST.TXT
echo "Repo package information update complete."