#!/bin/sh
# 
# 2008-2009 Nico Schottelius (nico-cinit at schottelius.org)
# 
# This file is part of cinit.
#
# cinit 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 3 of the License, or
# (at your option) any later version.
# 
# cinit is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with cinit-conf. If not, see <http://www.gnu.org/licenses/>.
#
# cinit: create dependency: service a needs or wants service b
#

set -e
. "$(dirname $0)/cinit-conf.read-conf"

if [ $# -lt 3 ]; then
   echo "`basename $0`: service_A [wants|needs] service_B"
   echo ""
   echo "   Service A needs or wants Service B."
   echo "   You must specify whether to use wants or needs."
   echo ""
   exit 23
fi

SVC_A="$1"; shift
DEP="$1"; shift

# adding 'wishes' for x-mas and requires for 'the mass' and 'tv'
case "${DEP}" in
   wishes|wants) DEP="$C_WANTS" ;;
   needs|requires) DEP="$C_NEEDS" ;;
   *) echo "Use \"want\" or \"need\" as type of dependency."
esac

SVC_A_LDIR="${R_SVC_DIR}/${SVC_A}/${DEP}"
# Try to create dependency directory, if it does not exist
if [ ! -d "${SVC_A_LDIR}" ]; then
   echo "${SVC_A}:+${DEP}"
   mkdir "${SVC_A_LDIR}"
fi

# allow multiple dependencies to be added in one run
while [ $# -gt 0 ]; do
   SVC_B="$1"; shift

   # remove slashes in the name for destination
   SVC_B_LNAME="$(echo "$SVC_B" | sed 's#/#-#g')"
   SVC_B_SOURCE="${T_SVC_DIR}/${SVC_B}"
   SVC_A_LDEST="${SVC_A_LDIR}/${SVC_B_LNAME}"

   echo "${SVC_A} ${DEP} ${SVC_B} (${SVC_B_LNAME})"
   ln -sf "${SVC_B_SOURCE}" "${SVC_A_LDEST}"
done

exit 0