// ignore_for_file: avoid_print

import 'dart:io';

import 'package:ndk/ndk.dart';
import 'package:ndk/shared/nips/nip01/bip340.dart';
import 'package:ndk/shared/nips/nip01/key_pair.dart';

void main() async {
  // We use an empty bootstrap relay list,
  // since NWC will provide the relay we connect to so we don't need default relays
  final ndk = Ndk.emptyBootstrapRelaysConfig();

  // You need an NWC_URI env var or to replace with your NWC uri connection
  final nwcUri = Platform.environment['NWC_URI']!;
  final connection = await ndk.nwc.connect(nwcUri);
  KeyPair key = Bip340.generatePrivateKey();
  final amount = 21;
  final lnurl = "opensats@vlt.ge";
  final comment = "enjoy this zap from NDK";

  ZapResponse response = await ndk.zaps.zap(
    nwcConnection: connection,
    lnurl: lnurl,
    comment: comment,
    amountSats: amount,
    fetchZapReceipt: true,
    signer: Bip340EventSigner(
      privateKey: key.privateKey,
      publicKey: key.publicKey,
    ),
    relays: ["wss://relay.damus.io"],
    pubKey: "787338757fc25d65cd929394d5e7713cf43638e8d259e8dcf5c73b834eb851f2",
    eventId: "906a0c5920b59e5754d0df5164bfea2a8d48ce5d73beaa1e854b3e6725e3288a",
  );

  if (response.payInvoiceResponse != null &&
      response.payInvoiceResponse!.preimage != null &&
      response.payInvoiceResponse!.preimage!.isNotEmpty) {
    print(
      "Payed $amount to $lnurl, preimage = ${response.payInvoiceResponse!.preimage}",
    );

    print("Waiting for Zap Receipt...");
    ZapReceipt? receipt = await response.zapReceipt;
    if (receipt != null) {
      print("Receipt : $receipt");
    } else {
      print("No Receipt");
    }
  }

  await ndk.destroy();
}