Archive creator bash script for *nix

archive_creator.sh

#!/bin/bash

#variables are declared here
param_help="-h"
param_version="-v"
archieve_creator() {

#checks if there is any directory in the parameter
if [[ -d "$1" ]]; then
  echo "This directory exits"
  tar -czf $(basename $1).tar.gz $1
#checks if parameter is help query
elif [[ "$1" == "$param_help" ]]; then
  echo "This is help query"
  tar --help
#checks if parameter is version query
elif [[ "$1" == "$param_version" ]]; then
  echo "Tar version is $(tar --version | grep -o '[0-9]\.[0-9]')"
#checks if there is no parameter at all
elif [[ "$1" == "" ]]; then
  echo "Error!!"
fi

}

#test cases are declared below with differnet paramter passing to the function

archieve_creator
archieve_creator -v
archieve_creator -h
archieve_creator Users/osman/Desktop/test