#!/bin/sh
### BEGIN INIT INFO
# Provides:          webbi - platform paired web server for maintenance mode
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Stop/start webbi
### END INIT INFO

PATH=/sbin:/usr/sbin:/bin:/usr/bin

if [ -L $0 ]; then
    SCRIPTNAME=`/bin/readlink -f $0`
else
    SCRIPTNAME=$0
fi

NAME="webbi"
DAEMONUSER="tessa"
DAEMONDIR="/home/$DAEMONUSER/tessa/webbi"
DAEMON="$DAEMONDIR/webbi"
DAEMON_ARGS="-c app.json"
LOGDIR="/home/$DAEMONUSER/tessa/logs/"
LOGFILE="$LOGDIR/webbi.log"
PIDFILE="/var/run/webbi.pid"

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

. /lib/init/vars.sh

. /lib/lsb/init-functions

do_start()
{
    log_daemon_msg "Starging system $NAME daemon"
    su - $DAEMONUSER -c "mkdir -p '$LOGDIR'"
    su - $DAEMONUSER -c "rm -f '$LOGFILE'"
    start-stop-daemon --start --name "$NAME" --user $DAEMONUSER \
        --background --make-pidfile --pidfile "$PIDFILE" \
        --stdout "$LOGFILE" --stderr "$LOGFILE" \
        --chdir "$DAEMONDIR" \
        --exec "$DAEMON" -- $DAEMON_ARGS
    RETVAL="$?"
    log_end_msg $?
    return "$RETVAL"
}

do_stop()
{
    # Return
    #   0 if daemon has been stopped
    #   1 if daemon was already stopped
    #   2 if daemon could not be stopped
    #   other if a failure occurred
    log_daemon_msg "Stopping system $NAME daemon"
    start-stop-daemon --stop --quiet --oknodo --retry=5 --pidfile "$PIDFILE"
    RETVAL="$?"
    log_daemon_msg $?
    rm -f $PIDFILE
    return "$RETVAL"
}

case "$1" in
    start)
        [ "$VERBOSE" != no ] && log_daemon_msg "Starting " "$NAME"
        do_start
        case "$?" in
            0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
            2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
    stop)
        [ "$VERBOSE" != no ] && log_daemon_msg "Stopping " "$NAME"
        do_stop
        case "$?" in
            0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
            2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
  restart)
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        case "$?" in
            0|1)
                do_start
                case "$?" in
                    0) log_end_msg 0 ;;
                    1) log_end_msg 1 ;; # Old process is still running
                    *) log_end_msg 1 ;; # Failed to start
                esac
                ;;
            *)
                # Failed to stop
                log_end_msg 1
                ;;
        esac
        ;;
    status)
        status_of_proc -p "$PIDFILE" "$DAEMON" "$NAME" && exit 0 || exit $?
        ;;
    *)
        echo "Usage: $SCRIPTNAME {start|stop|restart|status}" >&2
        exit 3
        ;;
esac

exit $RETVAL