#!/bin/bash -e

. /usr/share/debconf/confmodule
test $DEBIAN_SCRIPT_DEBUG && set -v -x

# Create a database from directories given by user 
# the databases are made at a give directory (should be customizable)
# TODO:
# Use scope to modify the /etc/emacsxx/site-start.d/50remembrance...
# file so they are automatically loaded on startup depending on
# scope, maybe do a sed -e to change 'scope' into the scope given.

PATH=/bin:/usr/bin
package=remembrance-agent
database=/var/lib/emacs/remembrance
databasesed=`echo $database | sed -e 's/\//\\\\\//g'`
scope=memory
program=/usr/bin/ra-index
config_file=/etc/savantrc
emacs_el_start=/etc/emacs/site-start.d/50remembrance-agent.el
tmp_file=`/bin/tempfile`
#tmp_file=/tmp/${package}.el

# First, per policy call emacs-install
/usr/lib/emacsen-common/emacs-package-install ${package}


user_input () {
# User input
db_get remembrance-agent/index-dir || true;  dirs="$RET"
db_get remembrance-agent/exclude-dir || true;  edirs="$RET"
# Should check here that the user has given only three..
ONCE=TRUE
}

case "$1" in
    install)
        ;;
    upgrade)
        ;;
    configure*)
	
	# First time around call user input
	user_input

# Now build the database
if [ ! -z "${dirs}" ]; then
	echo "Building database in ${database} using ${program}."
	echo "Including directories under '${dirs}' "
	echo "and excluding '${edirs}'."
	echo "Note: If the file structure is large this will take quite some time"
	echo "and require an important amount of memory and harddisk."
#	if [ ! -d ${database}/${scope} ]; then \
#		mkdir -p ${database}/${scope}; \
#	fi;
	# For Remembrance 2.0 (no scopes)
	if [ ! -d "${database}/" ]; then \
		mkdir -p ${database}/; \
	fi;
	${program} -c ${config_file} ${database}/ ${dirs} -e ${edirs}
	echo -e "\nDatabase FINISHED."
	echo -e "\nModifying ${emacs_el_start}"
	perl -pe "s/~\/RA-indexes\//$databasesed/" ${emacs_el_start} >${tmp_file}
	cp ${tmp_file} ${emacs_el_start}

# NOT USED (might, in the future)
# CHANGE scope in the .el file:
#	sed -e s/\$SCOPES/${scope}/ ${emacs_el_start} >${tmp_file}
# Maybe we should ask the user before doing this
#	cp ${tmp_file} ${emacs_el_start}

	rm ${tmp_file}
else
	echo -e "\nNOT building the database since no directories were specified."
fi
        ;;
	abort-upgrade)
	;;
	*)
	echo "postinst called with unknown argument \`$1'" >&2
	exit 0
	;;
esac



exit 0