test.sh

###### Initial user input

# ask users name and save input as NAME
read -p "Enter the name of the user being added, followed by [ENTER]: " NAME

# ask group name and save input as GROUP
read -p "Enter the name of the group being added, followed by [ENTER], (leave empty to skip): " GROUP

###### Helper functions

# gets a list of users and then searches for the first argument in that list
function check_for_user {
	dscl . list /Users | grep -q $1
}

# gets a list of groups and then searches for the first argument in that list
function check_for_group {
	dscl . list /Groups | grep -q $1
}

# logging indicator for fake commands
function fake_command {
	printf "[FAKE] - $1\n"
}

###### Script Logic

# Validate user input for NAME
if [[ -z "$NAME" ]]; then
	printf 'Name not entered, exiting script'
    exit 1
else
	# Check if user already exists
   	if check_for_user $NAME; then
	    printf "User ${NAME} found, skipping creation\n"
	else
		# Create user if no user found
    	fake_command "Create user ${NAME}" # Make sure to add flag that creates home directory

	    # ALTERNATIVELY: Ask the user for a password instead of generating one

		# create temp password
	    TEMP_PASSWORD="${NAME}_12345"
	    # present admin running the script with the temp password 
	    printf "Temporary password set to ${TEMP_PASSWORD} (please change asap)\n"
	    # Set password for the user
	    fake_command "Set user ${NAME} password to ${TEMP_PASSWORD}"
	fi
fi

# Validate user input for GROUP
if [[ -z "$GROUP" ]]; then
	# If no group entered, exit the script as we are done
    printf 'Group not entered, skipping add to group\n'
    exit 0
else
	# Check if group already exists
	if check_for_group $GROUP; then
		# Add to group if it exists already
	    printf "Group ${GROUP} found, skipping creation\n"
	    fake_command "Add user ${NAME} to group ${GROUP}"
	else
	    fake_command "Create group ${GROUP}"
	    fake_command "Add user ${NAME} to group ${GROUP}"
	fi
fi