#!/bin/sh

### BEGIN INIT INFO
# Provides:          cantata-dynamic
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Should-Start:      mpd
# Should-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Cantata MPD Dynamizer
# Description:       Start the Cantata MPD Dynamizer service.
### END INIT INFO

. /lib/lsb/init-functions

PATH=/sbin:/bin:/usr/sbin:/usr/bin
NAME=cantata-dynamic
DESC="Cantata MPD Dynamizer"
DAEMON=/usr/bin/cantata-dynamic
CANTATA_DYNAMIC_CONF=/etc/cantata-dynamic.conf
START_CANTATA_DYNAMIC=true

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

if [ ! -d "/var/run/cantata-dynamic" ]; then
    mkdir /var/run/cantata-dynamic
    if dpkg-statoverride --list --quiet /var/run/cantata-dynamic > /dev/null; then
        #if dpkg-statoverride is used update it with permissions there
        dpkg-statoverride --force --quiet --update --add $( dpkg-statoverride --list --quiet /var/run/cantata-dynamic ) 2> /dev/null
    else
        #use defaults
        chown mpd:audio /var/run/cantata-dynamic
        chmod 755 /var/run/cantata-dynamic
    fi
fi

PIDFILE=$(sed -n 's/^[[:space:]]*pidFile=[[:space:]]*"\?\([^"]*\)\"\?/\1/p' $CANTATA_DYNAMIC_CONF)

cantata_dynamic_start () {
    if [ "$START_CANTATA_DYNAMIC" != "true" ]; then
        log_action_msg "Not starting MPD: disabled by /etc/default/$NAME".
        exit 0
    fi

    log_daemon_msg "Starting $DESC" "$NAME"

    if [ -z "$PIDFILE" ]; then
        log_failure_msg \
            "$CANTATA_DYNAMIC_CONF must have pidFile set; cannot start daemon."
        exit 1
    fi

    PIDDIR=$(dirname "$PIDFILE")
    if [ ! -d "$PIDDIR" ]; then
        mkdir -m 0755 $PIDDIR
        chown mpd:audio $PIDDIR
    fi

    start-stop-daemon --start --quiet --oknodo --pidfile "$PIDFILE" \
        --exec "$DAEMON" -- server "$CANTATA_DYNAMIC_CONF"
    log_end_msg $?
}

cantata_dynamic_stop () {
    if [ "$START_CANTATA_DYNAMIC" != "true" ]; then
        log_failure_msg "Not stopping $NAME: disabled by /etc/default/$NAME".
        exit 0
    fi
    if [ -z "$PIDFILE" ]; then
        log_failure_msg \
            "$CANTATA_DYNAMIC_CONF must have pidFile set; cannot stop daemon."
        exit 1
    fi

    log_daemon_msg "Stopping $DESC" "$NAME"
    start-stop-daemon --stop --quiet --oknodo --pidfile "$PIDFILE"
    log_end_msg $?
}

# note to self: don't call the non-standard args for this in
# {post,pre}{inst,rm} scripts since users are not forced to upgrade
# /etc/init.d/mpd when mpd is updated
case "$1" in
    start)
        cantata_dynamic_start
        ;;
    stop)
        cantata_dynamic_stop
        ;;
    status)
        status_of_proc -p $PIDFILE $DAEMON $NAME
    ;;
    restart|force-reload)
        cantata_dynamic_stop
        cantata_dynamic_start
        ;;
    force-start)
        cantata_dynamic_start
        ;;
    force-restart)
        cantata_dynamic_stop
        cantata_dynamic_start
        ;;
    force-reload)
    cantata_dynamic_stop
    cantata_dynamic_start
    ;;
    *)
        echo "Usage: $0 {start|stop|restart|force-reload}"
        exit 2
        ;;
esac