Bot social credit

social_credit.sh

get() {
    credit=0
    wallet=()
    until [ $credit -ge $1 ]; do
        [[ $credit -ge $1 ]] && break
        social=$(( RANDOM % $1 ))
        credit=$(( $credit + $social ))
        echo "[+] You have earned: $credit Social credits"
        sleep 1
        wallet+=($credit)
    done
    total=$(IFS=+; echo "$((${wallet[*]}))")
    echo $total > .wallet
    unset social credit
}
if [ -z $1 ]; then
    echo "Usage: $0 [option] [int]"
    echo -e "Option:\n\t-c [int]\t to earn social credit"
    echo -e "\n\t-w\t\t your social credit wallet"; exit
fi
case $1 in
    -c)
        if [[ -z $2 ]]; then
            echo "how much?"
        else
            get "$2"
        fi
    ;;
    -w)
        if [[ -f .wallet ]]; then
            echo "Balance: $(cat .wallet) Social Credits"
        else
            echo "poor"
        fi
    ;;
esac