#!/bin/bash

### BEGIN INIT INFO
# Provides:          piavpn
# Required-Start:    $network $local_fs $remote_fs
# Required-Stop:     $network $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Protect your privacy online and access media content with no regional restrictions. Strong encryption and no-log policy with 3000+ servers in 60+ countries.
### END INIT INFO

NAME=piavpn
PIDFILE=/var/run/$NAME.pid
DAEMON=/opt/piavpn/bin/pia-daemon
LOGFILE=/var/log/$NAME.log
export LD_LIBRARY_PATH=/opt/piavpn/lib

##exit gracefully if daemon doesn't exist
[ -f "$DAEMON" ] || exit 0 

[ -f /lib/init/vars.sh ] && . /lib/init/vars.sh
[ -f /lib/lsb/init-functions ] && . /lib/lsb/init-functions

#
# Function that starts the daemon
#
start() {
  # Return
  #   0 if daemon has been started
  #   1 if daemon was already running
  #   2 if daemon could not be started
  start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON \
    --background --make-pidfile --no-close --test > /dev/null || return 1
  start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON \
    --background --make-pidfile --no-close >> $LOGFILE 2>&1 || return 2
}

#
# Function that stops the daemon
#
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
  start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE
  RETVAL="$?"
  [ "$RETVAL" = 2 ] && return 2
  rm -f $PIDFILE
  return "$RETVAL"
}

#
# Function that restarts the daemon
#
restart() {
  #
  # If the "reload" option is implemented then remove the
  # 'force-reload' alias
  #
  log_daemon_msg "Restarting $DAEMON" "$NAME"
  stop
  case "$?" in
    0|1)
      start
      case "$?" 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
}

case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  restart)
    restart
    ;;
  status)
    status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
    ;;
  *)
    echo $"Usage: $0 {start|stop|restart|status}"
    exit 1
    ;;
esac
