#!/bin/bash -e

### BEGIN INIT INFO
# Provides:          rivendell caed ripcd rdcatchd
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Should-Start:      mysql jackd gpio asihpi
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start Rivendell daemons
# Description:       Provides caed rdcatchd and ripcd daemons
### END INIT INFO

DAEMONS="caed ripcd rdcatchd"
PIDDIR=/var/run/rivendell
NAME=rivendell
LABEL="Rivendell daemons"

# Defaults
RUN_MODE="init.d"

# Read config file (will override defaults above)
[ -r /etc/default/rivendell ] && . /etc/default/rivendell

if [ ! -f "/etc/rd.conf" ]; then
    echo "No /etc/rd.conf found. See documentation and /usr/share/doc/rivendell/examples/." >&2
    exit 0
fi

DAEMON_USER=`sed -n 's/^AudioOwner=\(.*\)$/\1/p' /etc/rd.conf`

# For Ubuntu, create run directory to store pid files.
AUDIOGROUP=`sed -n 's/^AudioGroup=\(.*\)$/\1/p' /etc/rd.conf`
if [ ! -d /var/run/rivendell ]; then
    install --directory --mode 02775 --owner="$DAEMON_USER" --group="$AUDIOGROUP" /var/run/rivendell
fi

# Check if Rivendell daemons are started by init scripts or pam_rd.
if [ "$RUN_MODE" != "init.d" ]; then
    exit 0
fi

for daemon in $DAEMONS; do
    test -x /usr/bin/$daemon || exit 0
done

# Create run directory to store pid files .
if [ ! -d $PIDDIR ]; then
    install --directory --mode 02775 --owner="$DAEMON_USER" --group="$AUDIOGROUP" $PIDDIR
fi

function start() {
    echo -n "Starting $LABEL:"
    for daemon in $DAEMONS; do
	start-stop-daemon --start --oknodo --chuid $DAEMON_USER --exec "/usr/bin/$daemon" --quiet
	echo -n " $daemon"
    done
    echo "."
}

function stop() {
    echo -n "Stopping $LABEL:"
    for daemon in $DAEMONS; do
	start-stop-daemon --stop --pidfile "$PIDDIR/$daemon.pid" --oknodo --user $DAEMON_USER  --exec "/usr/bin/$daemon" --quiet
	echo -n " $daemon"
    done
    echo "."

    # caed forgets sometimes the shared memory 0x5005
    ipcrm -M 0x5005 2> /dev/null || true
}

case "$1" in
  start)
    if ! /usr/bin/rdadmin --check-db; then
	echo "No database available, check that MySQL is running" >&2;
	exit 0;
    fi

    start
    ;;
  stop)
    stop
      ;;
  restart)
    stop
    start
    ;;
  *)
    echo "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload}"
    exit 1
    ;;
esac

exit 0