#!/bin/sh

### BEGIN INIT INFO
# Provides:          gorush
# Required-Start:    $syslog $network
# Required-Stop:     $syslog $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the gorush web server
# Description:       starts gorush using start-stop-daemon
### END INIT INFO

# Original Author: Bo-Yi Wu (appleboy)

# Do NOT "set -e"
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="the gorush web server"
NAME=gorush
DAEMON=$(which gorush)

DAEMONUSER=www-data
PIDFILE=/var/run/$NAME.pid
CONFIGFILE=/etc/gorush/config.yml
DAEMONOPTS="-c $CONFIGFILE"

USERBIND="setcap cap_net_bind_service=+ep"
STOP_SCHEDULE="${STOP_SCHEDULE:-QUIT/5/TERM/5/KILL/5}"

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

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

# Set the ulimits
ulimit -n 8192

do_start()
{
  $USERBIND $DAEMON
  sh -c "USER=$DAEMONUSER start-stop-daemon --start --quiet --pidfile $PIDFILE --make-pidfile \\
    --background --chuid $DAEMONUSER --exec $DAEMON -- $DAEMONOPTS"
}

do_stop()
{
  start-stop-daemon --stop --quiet --retry=$STOP_SCHEDULE --pidfile $PIDFILE --name $NAME --oknodo
  rm -f $PIDFILE
}

do_status()
{
  if [ -f $PIDFILE ]; then
    if kill -0 $(cat "$PIDFILE"); then
      echo "$NAME is running, PID is $(cat $PIDFILE)"
    else
      echo "$NAME process is dead, but pidfile exists"
    fi
  else
    echo "$NAME is not running"
  fi
}

case "$1" in
  start)
    echo "Starting $DESC" "$NAME"
    do_start
    ;;
  stop)
    echo "Stopping $DESC" "$NAME"
    do_stop
    ;;
  status)
    do_status
    ;;
  restart)
    echo "Restarting $DESC" "$NAME"
    do_stop
    do_start
    ;;
  *)
    echo "Usage: $SCRIPTNAME {start|stop|status|restart}" >&2
    exit 2
    ;;
esac

exit 0