#!/bin/bash
#
# Copyright 2012, 2013 Red Hat, Inc.
#
# This file is part of Thermostat.
#
# Thermostat 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 2, or (at your
# option) any later version.
#
# Thermostat 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 Thermostat; see the file COPYING.  If not see
# <http://www.gnu.org/licenses/>.
#
# Linking this code with other modules is making a combined work
# based on this code.  Thus, the terms and conditions of the GNU
# General Public License cover the whole combination.
#
# As a special exception, the copyright holders of this code give
# you permission to link this code with independent modules to
# produce an executable, regardless of the license terms of these
# independent modules, and to copy and distribute the resulting
# executable under terms of your choice, provided that you also
# meet, for each linked independent module, the terms and conditions
# of the license of that module.  An independent module is a module
# which is not derived from or based on this code.  If you modify
# this code, you may extend this exception to your version of the
# library, but you are not obligated to do so.  If you do not wish
# to do so, delete this exception statement from your version.
#
#####################################################################
#
# Some necessary variables.
JAVA_DIR="@java.dir@"
JAVA="@java.home@/bin/java"

if [ x"$THERMOSTAT_HOME" = x ] ; then
  THERMOSTAT_HOME="@thermostat.home@"
fi
export THERMOSTAT_HOME
THERMOSTAT_LIBS="${THERMOSTAT_HOME}/libs"

# need tools from the JVM
TOOLS_JAR="@java.home@/../lib/tools.jar"

# plus the main services we use and export
SERVICE_CLASSPATH="${THERMOSTAT_LIBS}/*"

SERVICE_CLASSPATH="${TOOLS_JAR}:${SERVICE_CLASSPATH}"
THERMOSTAT_MAIN="com.redhat.thermostat.main.Thermostat"

function usage() {
    echo "$0 [-J<java-opt>] [-Tbg PIDFILE] [THERMOSTAT_ARGS]" >&2
    exit 1
}

# start parsing arguments, we intercept jvm arguments vs thermostat specific
# arguments
JAVA_ARGS=()
ARGS=()

RUN_IN_BG=0
PID_FILE=""

i=0
j=0

while [ "$#" -gt "0" ];
do
    case "$1" in
    -J*)
        JAVA_ARGS[$i]="${1##-J}"
        i=$((i+1))
        shift
        ;;
    -Tbg)
        shift
        RUN_IN_BG=1
        PID_FILE="$1"
        shift
        ;;
    *)
        ARGS[$j]="$1"
        j=$((j+1))
        shift
        ;;
    esac
done

# Finally run thermostat (optionally in the background)
if [ $RUN_IN_BG -eq 1 ]; then
    # The thermostat-agent-sysd script uses this.
    if [ x"$PID_FILE" = "x" ]; then
        usage 
    else
        ${JAVA} "${JAVA_ARGS[@]}" -cp ${SERVICE_CLASSPATH} ${THERMOSTAT_MAIN} "${ARGS[@]}" &
        retval=$?
        echo $! > $PID_FILE
        retval=$(( $retval + $? ))
    fi
else
    ${JAVA} "${JAVA_ARGS[@]}" -cp ${SERVICE_CLASSPATH} ${THERMOSTAT_MAIN} "${ARGS[@]}"
    retval=$?
fi
exit $retval