#!/bin/bash


DOWNLOADLINK="https://r.mistserver.org/dl/mistserver_64V3.3.tar.gz"

if [ "`whoami`" != "root" ]; then
  echo "Must be root to install"
  exit
fi

echo Downloading and installing binaries
curl -L -s -o - $DOWNLOADLINK  | tar -C /usr/bin/ -xvz
if [ "$?" != "0" ]; then
  echo "Download and install failed, please verify internet connectivity or contact support."
  exit
fi

if pgrep MistController >/dev/null ; then
  if kill -s USR1 `pgrep -o MistController` ; then
    echo "Update complete"
  else
    echo "Update installed, but MistServer will have to be manually restarted"
  fi
  
  exit
fi

LINE=`stat /proc/1/exe | sed -n 1p | cut -d'>' -s -f2`

#using $? to determine systemd or init
if echo $LINE | grep -q systemd; then
  echo "detected systemd"
  if curl -L -s -o "/etc/systemd/system/mistserver.service" "https://mistserver.org/mistserver.service" ; then
    systemctl enable mistserver && echo "Successfully installed MistServer using systemd. Starting MistServer." && systemctl start mistserver && exit
    echo "Something went wrong. Please install manually or contact support."
  else
    echo "Download of systemd service failed, please verify internet connectivity or contact support."
    exit
  fi
else
    echo "detected init"
    if curl -L -s -o "/etc/init.d/mistserver" "https://mistserver.org/mistserver.init" ; then
      chmod +x "/etc/init.d/mistserver"
      if which chkconfig ; then
        chkconfig mistserver on && echo "Successfully installed MistServer using init. Starting MistServer." && service mistserver start && exit
      fi
      if which update-rc.d ; then
        echo "detected upstart ( = older ubuntu versions)"
        update-rc.d mistserver start 42 2 3 4 5 . stop 42 0 1 6 . && update-rc.d mistserver defaults && echo "Successfully installed MistServer using upstart (init). Starting MistServer." && service mistserver start && exit
      fi
    echo "Something went wrong. Please install manually or contact support."
    else
      echo "Download of init script failed, please verify internet connectivity or contact support."
      exit
    fi
fi