Bash Password validator

Question

I have stuck with my bash code. and needed some help. I trying to write bash code that : Length – minimum of 10 characters. Contain both alphabet and number. Include both the small and capital case letters. Color the output green if it passed the validation and red if it didn’t. Return exit code 0 if it passed the validation and exit code 1 if it didn’t., the problem that can be resolved for me is that code does not check upper and lower case. and have exit 0, which means the password ok in all cases.

 # Color for Output
Warning='\033[0;31m'        # Red
Success='\033[0;32m'      # Green
NC="\033[0m"            # No Color

password=$1
len="${#password}"
if test $len -ge 4 ; then

echo "$password" | grep -eq [[:digit:]]
if test $? -eq 1 ; then

echo "$password" | grep -e [[:upper:]]
if test $? -e 1 ; then

echo "$password" | grep -e [[:lower:]]  
if test $? -e 1 ; then

printf "${Success}Strong password!$1\n"
else
 echo "weak password include lower case char"
fi
else
 echo "weak password include capital char" 
fi
else
echo && echo $?
printf "${Success}Strong password!$1\n"
fi
else
echo $?
printf ${Warning}"Try again... \nPassword must have at least 10 characters.$1\n"
fi