#!/bin/sh
#----------------------------------------------------------------------------------
# create-index-eislist
#
# Copyright (c) 2001-2006 Frank Meyer <frank(at)eisfair(dot)org>
#
# Based on install-local-package by jed
#
# Creation   : 2005-12-18  tg
# Last Update: $Id$
#
# usage      : create-index-eislist
#
# 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
# (at your option) any later version.
#----------------------------------------------------------------------------------

#----------------------------------------------------------------------------------
# sub: write eislist header
# $1 - page number
#----------------------------------------------------------------------------------
write_eislist_header ()
{
    pnbr=$1

    if [ $pnbr -gt 1 ]
    then
        idxname="-$pnbr"
    else
        idxname=''
    fi

    # remove old file
    rm -f ${pack_dir}/eis-list${idxname}.txt

# write header
cat   > ${pack_dir}/eis-list${idxname}.txt  <<EOF
#<comment> """"""""""""""""Namen einfuegen"""""""""""""""
#<comment> Copyright (c) 2001-2006 the eisfair team, c/o Frank Meyer, <frank(at)eisfair(dot)org>
#<welcome> Page $page_idx of $max_pages - $pack_prefix
#<index> index.txt
#<empty>
#<message> Available packages:
EOF

}

#----------------------------------------------------------------------------------
# sub: write eislist footer
# $1 - page number
#----------------------------------------------------------------------------------
write_eislist_footer ()
{
    pnbr=$1

    if [ $pnbr -gt 1 ]
    then
        idxname="-$pnbr"
    else
        idxname=''
    fi

    # write footer
    {
        echo "#<empty>"
        if [ $page_idx -lt $max_pages ]
        then
            echo "#<link> eis-list-`expr $page_idx + 1`.txt -> next page"
        fi
    } >> ${pack_dir}/eis-list${idxname}.txt
    chmod 664 ${pack_dir}/eis-list${idxname}.txt

}

#----------------------------------------------------------------------------------
# sub: write eislist entry
# $1 - page number
#----------------------------------------------------------------------------------
write_eislist_entry ()
{
    pnbr=$1

    if [ $pnbr -gt 1 ]
    then
        idxname="-$pnbr"
    else
        idxname=''
    fi

    echo "#<info 1.1.0> $FNAME" >> ${pack_dir}/eis-list${idxname}.txt
}

#----------------------------------------------------------------------------------
# create eis-list file
#
# input:  $1 - package directory
# return:  0 - ok
#          1 - error accured
#----------------------------------------------------------------------------------
create_eislist ()
{
    rtc=1
    max_per_page=11
    pack_dir="$1"

    # check if .info-files exist
    ls $pack_dir/updates/update.tar.gz.info $pack_dir/*.info > /dev/null 2> /dev/null

    if [ $? -eq 0 ]
    then
        # .info-file(s) found!
        cd $pack_dir

        max_nbr=`ls updates/update.tar.gz.info *.info|wc -l`
        max_pages=`expr \( $max_nbr - 1 \) \/ $max_per_page + 1`

        # process all .info-files
        nbr_idx=0
        total_idx=0
        page_idx=1
        for FNAME in updates/update.tar.gz.info *.info
        do
            nbr_idx=`expr $nbr_idx + 1`
            total_idx=`expr $total_idx + 1`

            # write header
            if [ $nbr_idx -eq 1 ]
            then
                write_eislist_header $page_idx
            fi

            # write entry
            write_eislist_entry $page_idx

            # write footer
            if [ $nbr_idx -eq $max_per_page -o $total_idx -eq $max_nbr ]
            then
                write_eislist_footer $page_idx

                nbr_idx=0
                page_idx=`expr $page_idx + 1`
            fi
        done

        rtc=0
    fi

    return $rtc
}

#----------------------------------------------------------------------------------
# create index.txt file
#----------------------------------------------------------------------------------
create_index ()
{
    # check if .info-files exist
    ls $pack_dir/updates/update.tar.gz.info $pack_dir/*.info > /dev/null 2> /dev/null

    if [ $? -eq 0 ]
    then
        # .info-file(s) found!
        cd $pack_dir
        rm -f $pack_dir/index.txt

        # write header
        {
            echo "#------------------------------------------------------------------"
            echo "# $pack_prefix/index.txt"
            echo "# Creation date: `date +%Y-%m-%d` `date +%H:%M:%S`"
            echo "#------------------------------------------------------------------"
        } > $pack_dir/index.txt

        for FNAME in updates/update.tar.gz.info *.info
        do
            pack_name=`grep "<name>" $pack_dir/$FNAME | sed 's#</*name>##g'`

            pack_version=`grep "<version>" $pack_dir/$FNAME |  sed -e 's#<version>\([0-9\.]*\).*</version>#\1#'`

            pack_status=`grep "<status>" $pack_dir/$FNAME | sed 's#</*status>##g'`
            pack_url="$pack_prefix/$FNAME"

            # ohne absoluten Pfad
            echo $pack_name $pack_version $pack_status $FNAME >> $pack_dir/index.txt
        done

        wget http://pack-eis.de/index.txt -O $pack_dir/index.pack-eis.txt
        {
            echo
            echo "#------------------------------------------------------------------"
            echo "# official index.txt from pack-eis follows"
            echo "#------------------------------------------------------------------"
            echo
            less $pack_dir/index.pack-eis.txt
        } >> $pack_dir/index.txt
        rm -f $pack_dir/index.pack-eis.txt
        chmod 664 $pack_dir/index.txt
    fi
}

#==================================================================================
# main
#==================================================================================

#index_file="http://www.pack-eis.de/index.txt"
index_file="http://WO SOLL DER INDEX FILE STEHEN  DIR/DIR"
#pack_prefix="file://$pack_dir"
pack_prefix="http://WO LIEGEN DIE PAKETE DIR/DIR"

package_dir="/var/www/WO LIEGEN DIE PAKETE DIR/DIR"


if [ -d $package_dir ]
then
    echo "Creating eis-list in $package_dir"
    if create_eislist "$package_dir"
    then
        # create index.txt file
        create_index
    fi
else
    echo "Directory does not exist"
fi

#==================================================================================
# end
#==================================================================================