alan 0.39.3

Pure Dart library to easily integrate with any Cosmos-based chain.

example/example.dart

import 'package:alan/alan.dart';
import 'package:http/http.dart' as http;

void main() async {
  // -----------------------------------
  // --- Registering new msg types
  // -----------------------------------

  // MsgType needs to implement StdMsg
  // Codec.registerType('my/MsgType', MyMsgType);

  // -----------------------------------
  // --- Creating a wallet
  // -----------------------------------

  final networkInfo = NetworkInfo(
    bech32Hrp: 'did:com:',
    lcdUrl: 'http://localhost:1317',
  );

  final mnemonicString =
      'vivid favorite regular curve check word bubble echo disorder cute parade neck rib evidence option glimpse couple force angry section dizzy puppy express cream';
  final mnemonic = mnemonicString.split(' ');
  final wallet = Wallet.derive(mnemonic, networkInfo);

  // -----------------------------------
  // --- Creating a transaction
  // -----------------------------------

  final message = MsgSend(
    fromAddress: wallet.bech32Address,
    toAddress: 'did:com:1lys5uu683wrmupn4zguz7f2gqw45qae98pzn3d',
    amount: [StdCoin(denom: 'uatom', amount: '100')],
  );

  final stdTx = TxBuilder.buildStdTx([message]);

  // -----------------------------------
  // --- Signing a transaction
  // -----------------------------------
  final httpClient = http.Client();
  final txSigner = TxSigner.build(httpClient);
  final signedStdTx = await txSigner.signStdTx(stdTx, wallet);

  // -----------------------------------
  // --- Sending a transaction
  // -----------------------------------
  final txSender = TxSender.build(httpClient);
  final response = await txSender.broadcastStdTx(signedStdTx, wallet);

  // Check the result
  if (response.isSuccessful) {
    print('Tx sent successfully. Response: ${response}');
  } else {
    print('Tx errored: ${response}');
  }
}