#!/usr/bin/env bash
# * ##########################################################################
# *
# *              //===//   //=====   //===//   //       //   //===//
# *             //    //  //        //    //  //       //   //    //
# *            //===//   //=====   //===//   //       //   //===<<
# *           //   \\         //  //        //       //   //    //
# *          //     \\  =====//  //        //=====  //   //===//   Version III
# *
# *             ###################################################
# *           ======  D E M O N S T R A T I O N   S Y S T E M  ======
# *             ###################################################
# *
# * ############# An Efficient RSerPool Prototype Implementation #############
# *
# * Copyright (C) 2002-2025 by Thomas Dreibholz
# *
# * 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 3 of the License, or
# * (at your option) any later version.
# *
# * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
# *
# * Contact: dreibh.iem.uni-due.de

if [ $# -lt 5 ] ; then
   echo >&2 "Usage: RemoteComponentControl {WriteCmdOnly CmdFile} [User Configuration File] [Host] [Scenario Configuration File] [Identifier] [start|stop|kill|stopall|killall|restart|status|log|monitor] {Arguments ...}"
   exit 1
fi


# ====== Get configuration ==================================================
if [ "$1" == "WriteCmdOnly" ] ; then
   if [ $# -lt 7 ] ; then
      echo >&2 "ERROR: Too few arguments!"
      exit 1
   fi
   CC_WRITECMD="$2"
   shift ; shift
else
   CC_WRITECMD=""
fi
CC_REMOTECONFIG="$1"
CC_HOST="$2"
CC_CONFIGFILE="$3"
CC_IDENTIFIER="$4"
CC_COMMAND="$5"
shift ; shift ; shift ; shift ; shift
CC_MISCARGS="$*"

if [ ! -e "${CC_REMOTECONFIG}" ] ; then
   echo >&2 "ERROR: Configuration file ${CC_REMOTECONFIG} does not exist!"
   exit 1
fi

# shellcheck disable=SC1090
. ./"${CC_REMOTECONFIG}"
CC_LOCALUSER="$(whoami)"
if [ "${CC_PATH}" == "" ] ; then
   CC_PATH="$(pwd | sed -e \"s/"$CC_LOCALUSER"/"${CC_REMOTEUSER}"/g\")"
fi

eval CC_HOST="${CC_HOST}"
if [ "${CC_HOST}" == "" ] ; then
   echo >&2 "ERROR: No host name specified! Check evaluation string!"
   exit 1
fi


progCall="${CC_REMOTEPRECOMMAND} nohup ./ComponentControl ${CC_CONFIGFILE} ${CC_IDENTIFIER} ${CC_COMMAND} ${CC_MISCARGS}"
command="\
if [ ! -e ${CC_PATH} ] ; then
   echo \"ERROR: Directory ${CC_PATH} does not exist on host ${CC_HOST}!\"
   exit 1
fi &&
cd ${CC_PATH} && \
if [ ! -e ComponentControl ] ; then
   echo \"ERROR: ComponentControl not found in directory ${CC_PATH} of host ${CC_HOST}!\"
   exit 1
fi &&
echo \"$progCall\" &&
$progCall >/dev/null 2>&1 &"


if [ "${CC_WRITECMD}" == "" ] ; then
   echo "Contacting ${CC_REMOTEUSER}@${CC_HOST} using key ${CC_REMOTEKEY} in ${CC_PATH} ..."
   ssh -i "${CC_REMOTEKEY}" "${CC_SSHOPT}" "${CC_REMOTEUSER}"@"${CC_HOST}" "${command}"
else
   echo "${command}" >>"${CC_WRITECMD}"
fi
