Bash token prompt

bash prompt

#!/bin/bash

if [ -z $1 ]; then
        echo "Usage: inputs.sh file.txt"
else
        codes=$(grep -o "###.*###" $1)
        inputs=$(echo $codes | sed 's/#//g')

        for x in $inputs; do
                #Check if the variable is empty 
                if [ "${!x}"z == "z" ]; then
                        read -rp "$x: " $x
                fi
                echo ${!x}
        done
fi