#! /bin/bash

# ---------
# Fonctions
# ---------
usage() {
    echo "USAGE"
    echo "  ${prog} <start|stop|restart|status>"
    echo " "
}

start() {
    if [ -f ${SITOOLS_PID} ];then
        status
    else    
        if [ "${SITOOLS}" != "" ];then
	    local SITOOLS_START="${START_DIR}/${SITOOLS}"
            [ ! -x ${SITOOLS_START} ] && echo "Impossible de lancer ${SITOOLS_START}" && exit 1
            echo -e "Demarrage de ${SITOOLS_START}...\c "
            nohup ${SITOOLS_START} 2>&1 >> ${LOG} &
            if [ ${?} -ne 0 ];then
                echo "[ERREUR]" | tee -a ${LOG}
                echo "Un probleme semble empecher ${SITOOLS_START} de demarrer..." | tee -a ${LOG}
                echo "Veuillez controler le script avant de relancer." | tee -a ${LOG}
            else
                echo "[OK]" | tee -a ${LOG}
            fi
        fi
    fi
}

stop() {
    echo -e "Arret de sitools...\c "
    if [ ! -f ${SITOOLS_PID} ];then
        echo "[ERREUR]"
        echo "Le fichier ${SITOOLS_PID} est introuvable..."
        isRunning=`ps -ef | grep -v 'grep' | grep 'fr.cnes.sitools.server.Starter' | awk '{print $2}'`
        if [ "${isRunning}" != "" -a "`echo ${isRunning} | tr -d [:digit:]`" = "" ];then
            echo " "
            echo "Tentative d'arret..."
            kill ${isRunning}
        else
            echo "sitools semble etre arrete..."
        fi
    else
        kill `cat ${SITOOLS_PID}`
        if [ ${?} -eq 0 ];then
            echo "[OK]"
            \rm ${SITOOLS_PID}

        else
            echo "[ERREUR]"
        fi
    fi
}

status() {
    echo -e "Etat de sitools..."
    if [ -f ${SITOOLS_PID} ];then
        local pid=`cat ${SITOOLS_PID}`
        if [ "${pid}" != "" ];then
            isRunning=`ps -ef |grep "${pid}" | grep -v 'grep' | grep 'fr.cnes.sitools.server.Starter'`
            if [ "${isRunning}" != "" ];then
                echo "sitools est lance (pid: ${pid})"
            else
                echo "Etrange... Le fichier PID est present (${pid}) mais le processus semble absent."
            fi
        else
            echo "le fichier ${SITOOLS_PID} est vide! Une erreur a du se produire lors du lancement..."
        fi
    else
        isRunning=`ps -ef |grep 'java' | grep -v 'grep' | grep 'fr.cnes.sitools.server.Starter'`
        if [ "${isRunning}" != "" ];then
            echo "Etrange... Le fichier PID est absent mais le processus semble fonctionner en memoire."
         else
            echo "sitools est arrete."
        fi
    fi
}

# ---------
# Principal
# ---------
prog=`basename ${0}`
myDir=`dirname ${0}`
myPid=${$}

# Parametrage de l'environnement
[ -f ${HOME}/.bash_profile ] && . ${HOME}/.bash_profile

LOG_DIR="${HOME}/LOG"
[ ! -d ${LOG_DIR} ] && mkdir -p ${LOG_DIR}

LOG="${LOG_DIR}/sitools.log"

[ "${1}" = "" ] && usage && exit 0

START_DIR="${HOME}/sitools-distribution/workspace/prototype"
SITOOLS="startSitools.sh"
SITOOLS_START="${START_DIR}/${SITOOLS}"
SITOOLS_PID="${LOG_DIR}/${SITOOLS}.run"

if [ ! -x ${SITOOLS_START} ];then
    echo "--- ERREUR ---" | tee -a ${LOG}
    echo "${SITOOLS_START} introuvable ou non executable. Abandon." | tee -a ${LOG}
    echo "--- ERREUR ---" | tee -a ${LOG}
    exit 1
fi



case ${1} in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        stop
        start
        ;;
    status)
        status
        ;;
    *)
        echo "option '${1}' inconnue"
        usage
        exit 1
        ;;
esac

# -------------
# Fin du script
# -------------