namillum/needing-organisation/examples/js-library-examples/node/callContract.js

Bubble Protocol SDK

//  Copyright (C) 2018 Zilliqa
//
//  This file is part of Zilliqa-Javascript-Library.
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.

const { BN, Long, bytes, units } = require("@zilliqa-js/util");
const { Zilliqa } = require("@zilliqa-js/zilliqa");
const {
  toBech32Address,
  getAddressFromPrivateKey,
} = require("@zilliqa-js/crypto");

const zilliqa = new Zilliqa("https://dev-api.zilliqa.com");

// These are set by the core protocol, and may vary per-chain.
// You can manually pack the bytes according to chain id and msg version.
// For more information: https://apidocs.zilliqa.com/?shell#getnetworkid

const chainId = 333; // chainId of the developer testnet
const msgVersion = 1; // current msgVersion
const VERSION = bytes.pack(chainId, msgVersion);

// Populate the wallet with an account
const privateKey =
  "deb5c896228f8515146aa16f94a558ba14e52d8496b4b267b2d59cd9036f39a6";

zilliqa.wallet.addByPrivateKey(privateKey);

const address = getAddressFromPrivateKey(privateKey);
console.log(`My account address is: ${address}`);
console.log(`My account bech32 address is: ${toBech32Address(address)}`);

async function testBlockchain() {
  try {
    // Get Balance
    const balance = await zilliqa.blockchain.getBalance(address);
    // Get Minimum Gas Price from blockchain
    const minGasPrice = await zilliqa.blockchain.getMinimumGasPrice();

    // Account balance (See note 1)
    console.log(`Your account balance is:`);
    console.log(balance.result);
    console.log(`Current Minimum Gas Price: ${minGasPrice.result}`);
    const myGasPrice = units.toQa("2000", units.Units.Li); // Gas Price that will be used by all transactions
    console.log(`My Gas Price ${myGasPrice.toString()}`);
    const isGasSufficient = myGasPrice.gte(new BN(minGasPrice.result)); // Checks if your gas price is less than the minimum gas price
    console.log(`Is the gas price sufficient? ${isGasSufficient}`);

    const deployedContract = zilliqa.contracts.at(
      "zil1v6tjt9s0nua80tvvays5m2g763npxgkez0gnnq"
    );

    // Create a new timebased message and call setHello
    // Also notice here we have a default function parameter named toDs as mentioned above.
    // For calling a smart contract, any transaction can be processed in the DS but not every transaction can be processed in the shards.
    // For those transactions are involved in chain call, the value of toDs should always be true.
    // If a transaction of contract invocation is sent to a shard and if the shard is not allowed to process it, then the transaction will be dropped.
    const newMsg = "Hello, the time is " + Date.now();
    console.log("Calling setHello transition with msg: " + newMsg);
    const callTx = await deployedContract.callWithoutConfirm(
      "setHello",
      [
        {
          vname: "msg",
          type: "String",
          value: newMsg,
        },
      ],
      {
        // amount, gasPrice and gasLimit must be explicitly provided
        version: VERSION,
        amount: new BN(0),
        gasPrice: myGasPrice,
        gasLimit: Long.fromNumber(8000),
      },
      false
    );

    console.log(callTx.bytes);

    // process confirm
    console.log(`The transaction id is:`, callTx.id);
    console.log(`Waiting transaction be confirmed`);
    const confirmedTxn = await callTx.confirm(callTx.id);

    console.log(`The transaction status is:`);
    console.log(confirmedTxn.receipt);
    if (confirmedTxn.receipt.success === true) {
      console.log(`Contract address is: ${deployedContract.address}`);
    }
  } catch (err) {
    console.log(err);
  }
}

testBlockchain();