laksadart 0.1.20-dev.2

Dart library for Zilliqa's Blockchain, including Schnorr, wallet/account/keys manager, RPCMethod, Transactions and Contracts deploy/call.

example/example.dart

import 'dart:convert';
import 'dart:io';
import 'package:laksadart/src/utils/unit.dart' as unit;
import 'package:laksadart/laksadart.dart';

main() async {
  var laksa = new Laksa(
      nodeUrl: 'https://dev-api.zilliqa.com', // 'https://api.zilliqa.com',
      scillaUrl: 'https://scilla-runner.zilliqa.com',
      networkID: 'DevNet');

  var acc = laksa.wallet.add('e19d05c5452598e24caad4a0d85a49146f7be089515c905ae6a19e8a578a6930');

  void autoTransaction() async {
    await acc.encryptAccount('111');
    await acc.updateBalance();
    var nonce = acc.nonce;
    var txn = laksa.transactions.newTx({
      'toAddr': ZilAddress('2e3c9b415b19ae4035503a06192a0fad76e04243').bech32,
      'amount': unit.Unit.Li(nonce + 1).qa,
      'gasPrice': unit.Unit.Li(2000).qa,
      'gasLimit': 1,
      'version': laksa.messenger.setTransactionVersion(1, laksa.messenger.Network_ID)
    });

    var signed = await acc.signTransaction(txn, passphrase: '111');
    print("\n");
    print("Transaction Payload is");
    print(json.encode(signed.toPayload));
    print("\n");

    var sent = await signed.sendTransaction();
    print("Transaction ID is");
    print(sent.transaction.TranID);
    print("\n");
    var sendTime = DateTime.now();
    print("Transaction is confirmed?");
    var result = await sent.transaction
        .confirm(txHash: sent.transaction.TranID, maxAttempts: 33, interval: 1000);
    print(
        "${result.receipt['success'] ? "Yes" : "No"}! Detail at: 'https://viewblock.io/zilliqa/tx/0x${sent.transaction.TranID}?network=${laksa.networkID == 'DevNet' ? 'testnet' : 'mainnet'}'");

    if (result != null) {
      var during = DateTime.now().difference(sendTime);
      print('Transaction confirmed during:$during');
    }
    print("\n");
  }

  void deploy() async {
    // File contract = new File('../test/contracts/helloworldversion.txt');
    File contract = new File('../test/contracts/fungible-token.scilla');

    await contract.readAsString().then((contractString) async {
      Laksa laksa = new Laksa(
          nodeUrl: 'https://dev-api.zilliqa.com', //'https://staging-api.aws.z7a.xyz'
          scillaUrl: 'https://scilla-runner.zilliqa.com',
          networkID: 'DevNet');
      // var init = [
      //   {
      //     'vname': '_scilla_version',
      //     'type': 'Uint32',
      //     'value': '0',
      //   },
      //   {
      //     'value': '0x9bfec715a6bd658fcb62b0f8cc9bfa2ade71434a',
      //     'vname': 'owner',
      //     'type': 'ByStr20'
      //   }
      // ];

      var init = [
        {"vname": "_scilla_version", "type": "Uint32", "value": "1"},
        {
          "vname": "owner",
          "type": "ByStr20",
          "value": "0x9bfec715a6bd658fcb62b0f8cc9bfa2ade71434a"
        },
        {"vname": "total_tokens", "type": "Uint128", "value": "1000000000"},
        {"vname": "decimals", "type": "Uint32", "value": "0"},
        {"vname": "name", "type": "String", "value": "BobCoin"},
        {"vname": "symbol", "type": "String", "value": "\$\BOB"}
      ];

      laksa.wallet.add('e19d05c5452598e24caad4a0d85a49146f7be089515c905ae6a19e8a578a6930');

      var newContract = laksa.contracts.newContract(code: contractString, init: init, version: 1);
      newContract.setDeployPayload(gasLimit: 10000, gasPrice: BigInt.from(3000000000), toDS: true);
      var sent = await newContract.sendContract();
      print(sent.transaction.toPayload);
      var sendTime = DateTime.now();
      print('sent contract at:$sendTime');
      print(sent.transaction.TranID);
      var deployed = await sent.confirmTx(maxAttempts: 33, interval: 1000);
      print(deployed.ContractAddress);
      if (deployed != null) {
        var during = DateTime.now().difference(sendTime);
        print('deployed confirmed during:$during');
      }

      // test call contract

      // deployed.setCallPayload(
      //     transition: 'setHello',
      //     params: [
      //       {'vname': "msg", 'type': "String", 'value': "Test World"}
      //     ],
      //     gasLimit: 8000,
      //     gasPrice: unit.Unit.Li(1000).qa,
      //     amount: unit.Unit.Qa(0).qa,
      //     toDS: true);
      // var sentCall = await deployed.sendContract();
      // print(sentCall.transaction.toPayload);
      // var calledTime = DateTime.now();
      // print('sent called time:$calledTime');
      // print(sentCall.transaction.TranID);

      // await sentCall.confirmTx(maxAttempts: 33, interval: 1000);
      // print(sentCall.ContractAddress);
      // if (sentCall != null) {
      //   var during2 = DateTime.now().difference(calledTime);
      //   print('called confirmed during:$during2');
      // }
      // var state = await sentCall.getState();
      // print("The state of the contract is:$state");
    });
  }

  void wallet() async {
    Laksa laksa = new Laksa(
        nodeUrl: 'https://dev-api.zilliqa.com', //'https://staging-api.aws.z7a.xyz'
        scillaUrl: 'https://scilla-runner.zilliqa.com',
        networkID: 'DevNet');
    var newAcc = laksa.wallet.create();
    await newAcc.encryptAccount('passphrase');

    print(
        "Sender Address is: ${ZilAddress(getAddressFromPublicKey('02526CC9198736761D9FFDAE0CA5E848667D31BFDB7754D8F7B2291D17A60CF63C')).bech32}");

    // print(newAcc.address);
    // await newAcc.updateBalance();
    // print(newAcc.balance);
  }

  // await main();

  // await autoTransaction();

  await wallet();
  for (int i = 0; i < 1; i++) {
    await autoTransaction();
  }

  //  await deploy();
}