cake_wallet/lib/utils/payment_request.dart

import 'package:cw_nano/nano_util.dart';

class PaymentRequest {
  PaymentRequest(this.address, this.amount, this.note, this.scheme);

  factory PaymentRequest.fromUri(Uri? uri) {
    var address = "";
    var amount = "";
    var note = "";
    var scheme = "";

    if (uri != null) {
      address = uri.path;
      amount = uri.queryParameters['tx_amount'] ?? uri.queryParameters['amount'] ?? "";
      note = uri.queryParameters['tx_description'] ?? uri.queryParameters['message'] ?? "";
      scheme = uri.scheme;
    }

    if (address.contains("nano")) {
      amount = NanoUtil.getRawAsUsableString(amount, NanoUtil.rawPerNano);
    } else if (address.contains("ban")) {
      amount = NanoUtil.getRawAsUsableString(amount, NanoUtil.rawPerBanano);
    }

    return PaymentRequest(address, amount, note, scheme);
  }

  final String address;
  final String amount;
  final String note;
  final String scheme;
}