#!/bin/bash

# Kontrola vstupn_ch parametr_
if [ "$#" -ne 2 ]; then
  echo "Pou_it_: $0 <username> <app_nam"
  exit 1
fi

# Vstupn_ parametry
USERNAME="$1"
APP_NAME="$2"


# Generov_n_ n_hodn_ho kl_~Me v bin_rn_m form_tu
#HEX_KEY=$(head -c "$KEY_LENGTH" /dev/urandom | xxd -p | tr -d '\n')
HEX_KEY=$( head -c 1024 /dev/urandom | openssl sha1 | awk '{ print $2 }' | head -c 30 )
BASE32_KEY=$(echo -n "$HEX_KEY" | base32 | tr -d '=')

# Generov_n_ OTP URL
OTP_URL=$(genotpurl -k "$HEX_KEY" -L "$USERNAME" -I "$APP_NAME")

# Generov_n_ QR k_du
OUTPUT_FILE="${USERNAME}.png"
qrencode -s 10 -t PNG -o - "$OTP_URL"  -o "$OUTPUT_FILE"

# Ukl_d_n_ dat do CSV souboru
CSV_FILE="usersOTP.csv"
echo "$USERNAME,$HEX_KEY,$BASE32_KEY,$APP_NAME" >> "$CSV_FILE"

# Informace o _sp~[_n_m proveden_
echo "QR k_d byl ulo_en do: $OUTPUT_FILE"
echo "Informace byly p~Yid_ny do: $CSV_FILE"