[bin] Add payme script

bin/payme

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+set -euo pipefail
+
+
+name="" # Your name
+iban="" # Your International Bank Account Number, without separators
+bic="" # The Bank Identification Code of your bank
+currency="EUR"
+
+
+if [ -z "$name" ] || [ -z "$iban" ] || [ -z "$bic" ]; then
+	echo "Fill in your account information in $(realpath "$0")"
+	exit 1
+fi
+
+if test $# -lt 2; then
+	echo "Usage: $0 <amount> <message>" >&2
+	exit 1
+fi
+
+amount="$1"
+shift 1
+message="$@"
+
+echo "$(tput bold)Beneficiary$(tput sgr0)  $name"
+echo "$(tput bold)Account$(tput sgr0)      $iban (BIC: $bic)"
+echo "$(tput bold)Amount$(tput sgr0)       $amount $currency"
+echo "$(tput bold)Message$(tput sgr0)      $message"
+
+if ! [[ $amount =~ [0-9]+(\.[0-9]+)? ]]; then
+	echo "Incorrect 'amount' format, (only) provide a decimal number like '1.5'" >&2
+	exit 1
+fi
+
+
+rm -f /tmp/qr.png
+qrencode -s 10 -o /tmp/qr.png <<EOF
+BCD
+001
+1
+SCT
+$bic
+$name
+$iban
+$currency$amount
+CHAR
+
+$message
+EOF
+nsxiv /tmp/qr.png