#!/bin/bash
#
# NAME
#     lab-systemd - setup/grading script for RH254 services lab
#
# SYNOPSIS
#     lab-systemd {setup|grade}
#
#     This script only works on serverX.example.com.
#
# DESCRIPTION
#     This script is the lab grading script for the 254 services lab.
#
# CHANGELOG
#   * Tue Feb  4 2014 Susan Lauber <slauber@redhat.com>
#   - original code

# Initialize and set some variables
MYHOST=""
CMD=""
DEBUG='true'
RUN_AS_ROOT='true'

# Source library of functions
source /usr/local/bin/labtool.shlib
trap on_exit EXIT

# Additional functions for this shell script
function print_usage {
  local problem_name=$(basename $0 | sed -e 's/^lab-//')
  cat << EOF
This script controls the setup and grading of this lab.
Usage: lab ${problem_name} COMMAND
       lab ${problem_name} -h|--help
COMMAND is one of:
    setup - perform any setup steps for this lab on this machine
    grade - perform any grading steps and report on this machine
EOF
}

function grade_services {
  echo -n "* Checking rsyslog service is enabled... "

  if systemctl is-enabled rsyslog.service &> /dev/null
  then
    print_PASS
  else
    print_FAIL
    echo "rsyslog service is not enabled."
  fi

  echo -n "* Checking rsyslog service is running... "

  if systemctl is-active rsyslog.service &> /dev/null
  then
    print_PASS
  else
    print_FAIL
    echo "rsyslog service is not running."
  fi

  echo -n "* Checking default target... "

  if [ "$(systemctl get-default)" = 'graphical.target' ]
  then
    print_PASS
  else
    print_FAIL
    echo "Incorrect default target."
  fi
}

function lab_setup {
  VMNAME=$1
  case $VMNAME in
    desktop)
      print_FAIL && echo "The setup script needs to be run on server"
      ;;
    server)

      # Set target
      if ! systemctl set-default multi-user.target &> /dev/null
      then
        print_FAIL
        echo "Failed setting target."
      fi

      # Set target
      if ! systemctl disable rsyslog.service &> /dev/null
      then
        print_FAIL
        echo "Failed disabling service."
      fi

      # Stop service
      if ! systemctl stop rsyslog.service  &> /dev/null
      then
        print_FAIL
        echo "Failed stopping service."
      fi

      ;;
    *)
      # Should never get here, but what the hey....
      print_FAIL && echo "The setup script needs to be run on server"
      ;;
  esac
}

function lab_grade {
  VMNAME=$1
  case $VMNAME in
    desktop)
      print_FAIL && echo "The grade script needs to be run on server"
      ;;
    server)
      grade_services
      ;;
    *)
      # Should never get here, but what the hey....
      print_FAIL && echo "The grade script needs to be run on server"
      ;;
  esac
}

# Main area

# Check if to be run as root (must do this first)
if [[ "${RUN_AS_ROOT}" == 'true' ]] && [[ "${EUID}" -gt "0" ]] ; then
  if [[ -x /usr/bin/sudo ]] ; then
    ${SUDO:-sudo} $0 "$@"
    exit
  else
    # Fail out if not running as root
    check_root
  fi
fi

# Process command line
# Parse input
case $1 in
  setup|grade)
    CMD=$1
    ;;
  -h|--help)
    print_usage
    exit 0
    ;;
  *)
    echo Bad option $1
    print_usage
    exit 1
    ;;
esac
# Validation
[ -z "$CMD" ] && debug "Missing command" && print_usage && exit 1

# Get local system information
get_X

# Branch based on short (without number) hostname
case $MYHOST in
  desktop|server)
    lab_$CMD $MYHOST
    ;;
  *)
    debug "Bad or missing hostname - $MYHOST"
    debug "This command needs to be run on desktop or server"
    exit 3
    ;;
esac