#! /bin/sh

set -e

echo Username: >&2
read -r USER
echo Password: >&2
read -r PWD
echo "Quota, in MiB (leave empty for unlimited quota):" >&2
read -r QUOTA

PWD=$(printf '%s' $PWD | xxd -p | tr -d '\n')
SALT=$(openssl rand 32 | xxd -p | tr -d '\n')
KEY=$(openssl rand 32 | xxd -p | tr -d '\n')
PWD=$(printf '%s%s' $SALT $PWD)

ROUNDS=1000

for i in $(seq $ROUNDS)
do
    printf "\r%d/$ROUNDS" $i >&2
    PWD=$(printf '%s' $PWD | xxd -p -r | sha256sum | cut -d' ' -f1)
done

echo >&2
cat <<-EOF
{
    "name": "$USER",
    "password": "$PWD",
    "salt": "$SALT",
    "key": "$KEY",
    "quota": "$QUOTA"
}
EOF