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#!/bin/bash

source common.sh
getPrgDir

USER=$(whoami)
console_name="OpenSim_console"
tmux_command="tmux -S /var/run/opensim/opensim-tmux.socket"
tmux_session=${console_name}
tmux_window="${tmux_command} select-window -t ${tmux_session}"
tmux_send="${tmux_command} send-keys -t ${tmux_session}"
bindir="${PRGDIR}/../bin"
date=$(date '+%F_%T')
quiet=""
inventory=""

if [ $USER = "opensim" ]
then
    SUDO=""
else
    SUDO="sudo -Hu opensim"
fi

if [ "$1" = "-q" ]
then
    quiet="true"
    shift 1
fi
   
if [ "x$1" = "x" ]; then
    tgt=$(basename $(pwd))
    num="$(echo ${tgt} | cut -c 4-)"
elif [ -d "./$1" ]; then
    tgt=$1
elif [ -d "./sim$1" ]; then
    num=$1
    tgt="./sim${num}"
else
    tgt=$1
    inventory=$1
fi

if [ "x$tgt" = "x" ]; then
    echo "usage:"
    echo "    $ $(basename $0) <sim>"
    echo "where <sim> is one of: " robust sim[0-9][0-9]
    exit 1
fi

cd ${bindir}

if ( ${tmux_command} -q list-sessions 2>/dev/null | grep -q ${console_name}: ); then
    true
else
    # The sudo is only so that the session is owned by opensim, otherwise it's owned by whoever ran this script, which is a likely security hole.
    # After the session is created, we rely on the /var/run/opensim directory to be group sticky, so that anyone in the opensim group can attach to the tmux socket.
    $SUDO ${tmux_command} new-session -d -s ${console_name} -n "Server"
fi


if [ "x$tgt" = "xROBUST" ]; then
    exe="Robust"
    title="ROBUST"
elif [ "x$inventory" = "x" ]; then
    exe="OpenSim"
    # Grab the first Section line of the sims .xml file, cut it down to the name.
    title=$(getSimName ${num})
fi

case $(basename $0) in 
    "start-sim")
	cmd="mono ${exe}.exe -inidirectory=${tgt} "

	# Check if it's already running.
	if [ -e /var/run/opensim/${tgt}.pid ]
	then
	    # Double check if it's REALLY running.
	    if [ "x$(ps -p $(cat /var/run/opensim/${tgt}.pid) --no-headers -o comm)" = "x" ]; then
		$SUDO rm -f /var/run/opensim/${tgt}.pid
	    fi
	fi
	# Now see if it's really really running.  lol
	if [ ! -e /var/run/opensim/${tgt}.pid ]
	then
	    if [ "x$tgt" = "xROBUST" ]; then
# TODO - the problem here is that the > bit is executed as onefang, not as opensim.
		$SUDO cat ../config/config.ini ../config/Robust.ini.template >../config/Robust.ini
#		$SUDO chown -R opensim:opensim ../config/Robust.ini
		chmod 640 ../config/Robust.ini
		${tmux_command} split-window -hp 50 -t "${tmux_session}:" "${cmd}"
	    else
		${tmux_command} new-window -dn "${title}" -t "${tmux_session}:${num}" "${cmd}"
	    fi
	fi

	if [ "x$quiet" = "x" ]
	then
	    if [ "x$tgt" = "xROBUST" ]; then
		${tmux_window} \; attach-session -t "${tmux_session}"
	    fi
	fi
	;;

    "backup-inventory")
	cd ${PRGDIR}
	$SUDO ${PRGDIR}/gitAR.sh i "${inventory}"
	user=$(sanitize "${inventory}")
	# Add the full date and time to create the IAR file name.
	cmd="save iar -c ${inventory} / password ${PRGDIR}/../../backups/${user}-${date}.iar"
	# Do it in the highest numbered window.
	${tmux_send}:"$" "${cmd}" Enter
	${tmux_send}:"$" "force gc" Enter
	;;

    "backup-sim")
	cd ${PRGDIR}
	$SUDO ${PRGDIR}/gitAR.sh o "${title}"
	sim=$(sanitize "${title}")
	# Add the full date and time to create the OAR file name.
	cmd="save oar --all ${PRGDIR}/../../backups/${sim}-${date}.oar"
	if [ -e /var/run/opensim/${tgt}.pid ]; then
	    ${tmux_send}:"[${title}]" "${cmd}" Enter
	    # Generate the map tiles, coz the good generator leaks memory badly if you leave it turned on.
	    ${tmux_send}:"${title}" "generate map" Enter
	    ${tmux_send}:"${title}" "force gc" Enter Enter Enter
	else
	    echo "No OAR created for ${title}, it's not running."
	fi
	;;

    "stop-sim")
	if [ -e /var/run/opensim/${tgt}.pid ]; then
	    ${tmux_send}:"${title}" "alert WARNING - Emergency shutdown in one minute!" Enter
	    ${tmux_send}:"${title}" "alert WARNING - Emergency shutdown in one minute!" Enter
	    sleep 30
	    ${tmux_send}:"${title}" "alert WARNING - Emergency shutdown in thirty seconds!" Enter
	    ${tmux_send}:"${title}" "alert WARNING - Emergency shutdown in thirty seconds!" Enter
	    sleep 30
	    ${tmux_send}:"${title}" "shutdown" Enter
	    sleep 30
	    if [ -e /var/run/opensim/${tgt}.pid ]; then
		echo "Killing it with extreme prejudice!"
		kill -TERM `cat /var/run/opensim/${tgt}.pid`
	    fi
	else
	    echo "Sim ${title} is not running, so not stopping."
	fi
	;;
esac