#!/usr/bin/env python3
"""Generate an EPC/GiroCode QR code for SEPA transfers."""

import argparse
import sys
from segno import helpers


def main():
    parser = argparse.ArgumentParser(description="Generate EPC QR code (GiroCode)")
    parser.add_argument("--name", required=True, help="Recipient name")
    parser.add_argument("--iban", required=True, help="Recipient IBAN")
    parser.add_argument("--amount", required=True, type=float, help="Amount in EUR")
    parser.add_argument("--reason", default="", help="Verwendungszweck / remittance text")
    parser.add_argument("--output", default="/tmp/epc_qr.png", help="Output file path")
    parser.add_argument("--scale", type=int, default=10, help="QR code scale factor")

    args = parser.parse_args()

    # Validate amount
    if args.amount <= 0 or args.amount > 999999999.99:
        print("Error: Amount must be between 0.01 and 999999999.99 EUR", file=sys.stderr)
        sys.exit(1)

    # Clean IBAN (remove spaces)
    iban = args.iban.replace(" ", "")

    qr = helpers.make_epc_qr(
        name=args.name,
        iban=iban,
        amount=args.amount,
        text=args.reason,
        encoding='UTF-8'
    )

    qr.save(args.output, scale=args.scale)
    print(args.output)


if __name__ == "__main__":
    main()