#!/bin/sh
# Nico Schottelius
# cinit: create dependency: service a needs or wants service b

# init variables
. $(dirname $0)/cinit.read-conf

BASEDIR=$DESTDIR/$CINIT_DIR

if [ $# -ne 3 ]; then
   echo "`basename $0`: service_A [wants|needs] service_B"
   echo ""
   echo "   Service A needs or wants Service B."
   echo "   Use relative paths, not absolute."
   echo "   You must specify whether to use wants or needs."
   echo ""
   exit 23
fi

SVC_A=$1
DEP=$2
SVC_B=$3

# 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 "Did not I say \"want\" or \"need\"? You _must_ use those terms."
esac

# FIXME: could someone PLEASE simply that?
SLASHES=$(echo $SVC_A | sed -e 's,/$,,' -e 's,[^/],,g' -e 's,/,../,g' -e 's,^,../../,')
DEST_NAME=$(echo $SVC_B | sed -e 's,/$,,' -e 's,/,-,g')

SOURCE="${SLASHES}${SVC_B}"
DEP_DIR="${BASEDIR}/${SVC_A}/${DEP}"

if [ ! -d "$DEP_DIR" ]; then
   echo "$DEP_DIR does not exist, creating..."
   mkdir "$DEP_DIR"
   if [ $? -ne 0 ]; then
      echo "Error occured due to creating directory. Exiting."
      exit 1
   fi
fi

DEST="${DEP_DIR}/${DEST_NAME}"

echo -n "Linking $SOURCE to $DEST ... "
ln -sf "$SOURCE" "$DEST"
echo "finished."