#!/bin/sh

##############################################################
#    DeInstallBase                                           #
#                                                            #
#    Performs de-installation for the bookcase from an info  #
#    library.                                                #
#                                                            #
##############################################################

#### Parse the argument ####

if [ $# -lt 2 ]; then
   echo "Usage : $0 [ bookcase ] [ info-library ] " >&2
   exit 1
fi

BookCase=$1
InfoLib=$2

NAMES_MMDB=$InfoLib/bookcase.map

### Validate if both bookcase and info-library is valid ###

if [ ! -f $NAMES_MMDB ]; then
   echo "(ERROR) $InfoLib is not a valid info-library" >&2
   exit 1
fi

if [ ! -w $NAMES_MMDB ]; then
   echo "(ERROR) No write permission to de-install $BookCase "
   exit 1
fi

##### Check to see if bookcase is already existing in the infolibrary

TSTSTRING=
TSTSTRING=`awk '{
                  if ( NR > 1 && $1 == bookcasename ) { print bookcasename }
                }' bookcasename=$BookCase $NAMES_MMDB`

if [ -z "$TSTSTRING" ]; then
   echo "(ERROR) $BookCase does not already exist in $InfoLib" >&2
   exit 2
fi

### remove the entry in the names.mmdb file ###

TMP_NAMES_MMDB=$NAMES_MMDB.tmp
awk '{
       if ( NR == 1 || $1 != bookcasename ) { print $0 }
     }' bookcasename=$BookCase $NAMES_MMDB > $TMP_NAMES_MMDB

mv $TMP_NAMES_MMDB $NAMES_MMDB

### remove the physical storage of bookcase from info-lib ###

if [ ! -d $InfoLib/$BookCase ]; then
   echo "(ERROR) $BookCase is not found under $InfoLib"
   exit 1
fi

rm -fr $InfoLib/$BookCase

if [ $? -ne 0 ]; then
   echo "(ERROR) Failed to remove $InfoLib/$BookCase" >&2
   exit 1
fi

exit 0