#!/bin/bash

# DISCLAIMER   :   It is recomended to test this script on a test machine.
#                  ManageEngine will not be responsible for any
#                  damage/loss to the data/setup based on the behavior of the script.

# DESCRIPTION  :   Script to add group in agent machines.
#
# ARGUMENT(S):
#
#  1) To add group
#
#       ARGUMENT FORMAT: <group_name>
#       EXAMPLE        : mygroup

#           RETURN VALUE                  MEANING

#                0             Group added successfully
#                1             Error while adding group
#                2             Invalid arguments.

errorCode=2
euid=$(id -u)
for i in 1; do
  #check sudo access
  if [ $euid -ne 0 ]; then
    echo "This script must be run as root"
    break
  fi

  #check if valid aruguments
  if [ $# -ne 1 ]; then
    echo "Incorrect Usage : Arguments mismatch."
    echo "Refer ARGUMENT(S) section in the script."
    break
  fi

  errorCode=0
  groupName=$1

  #check groupname already exist or not
  IsGrp=$(getent group | grep -c '^'$groupName':')
  if [ $IsGrp -eq 1 ]; then
    echo "Group : $groupName already exist "
    break
  fi

  #adding group
  groupadd $groupName

  if [ $? -eq 0 ]; then
    echo "Group: \"$groupName\" added successfully"
  else
    echo "Error while adding group : $groupName"
    errorCode=1
  fi
done

errorFunc() {
  return $errorCode
}
errorFunc