#!/bin/sh
#
# /etc/rc.d/rc.minidlna
#
# start/stop/restart/status of the MiniDLNA server.
#
# To make MiniDLNA start automatically at boot, make this
# file executable:  chmod 755 /etc/rc.d/rc.minidlna
#
# Written by Georgi D. Sotirov <gsotirov@gmail.com>
# Based on examples from Internet

# Bash colors
C_GREEN=$'\e[32;01m'
C_YELLOW=$'\e[33;01m'
C_RED=$'\e[31;01m'
C_NORMAL=$'\e[0m'

SNAME='MiniDLNA server'
NAME=minidlna
CMD="/usr/sbin/${NAME}d"
CONFILE="/etc/${NAME}.conf"
PIDFILE="/var/run/${NAME}.pid"
CMD_OPTS="-f $CONFILE -P $PIDFILE"

ok() {
  echo "${C_GREEN}Done${C_NORMAL}"
}

fail() {
  echo "${C_RED}Failure${C_NORMAL}"
}

print_status() {
  if [ $? != 0 ]; then
    fail
  else
    ok
  fi
}

start() {
  if [ -x $CMD ]; then
    if [ ! -e $PIDFILE ]; then
      echo -n "Starting $SNAME in $CMD... "
      $CMD $CMD_OPTS
      print_status
    else
      echo "Starting $SNAME: Already running with PID `cat $PIDFILE`!"
    fi
  fi
}

stop() {
  if [ -e $PIDFILE ]; then
    echo -n "Stopping ${SNAME}... "
    kill -15 `cat $PIDFILE`
    print_status
  else
    echo "Stopping ${SNAME}: Not running!"
  fi
}

restart() {
  stop
  sleep 3
  start
}

status() {
  if [ -e $PIDFILE ]; then
    echo "$SNAME running with PID `cat $PIDFILE`."
  else
    STAT=`ps -C $NAME -o pid= | wc -l`
    if [ ${STAT} -ge 1 ]; then
      echo "$SNAME is running"
    else
      echo "$SNAME is not running"
    fi
  fi
}

db_clean() {
  # If DB dir defined explicitly in log (i.e. not commented), then use it
  DB_DIR_CONF=$(grep -E '^db_dir=' $CONFILE | awk -F'=' '{ print $2 }')
  # else fallback to default
  DB_DIR=${DB_DIR_CONF:-/var/cache/$NAME}
  WAS_RUNNING=0

  if [ -e $DB_DIR -a -d $DB_DIR ]; then
    # Stop daemon if running
    if [ -e $PIDFILE ]; then
      WAS_RUNNING=1
      stop
      sleep 3
    fi

    echo -n "Cleaning cache in ${DB_DIR}... "
    rm -f ${DB_DIR}/files.db
    rm -rf ${DB_DIR}art_cache
    print_status

    # And restart daemon afterwards
    if [ $WAS_RUNNING -ne 0 ]; then
      start
    fi
  else
    echo "Error: cache dir $DB_DIR does not exist or not a direcory!"
  fi
}

help() {
  echo "$SNAME control"
  echo "Usage: $0 start|stop|restart|status|clean"
  echo
}

case "$1" in
  'start')
    start ;;
  'stop')
    stop ;;
  'restart')
    restart ;;
  'status')
    status ;;
  'clean')
    db_clean ;;
  *)
    help ;;
esac