smart-contract.md

📜 Smart Contract

Deploy Contract

Getting Test ZIL

Before you can send transaction on the Zilliqa blockchain, you'll need to acquire some test ZIL (Zilliqa's native cryptocurrency for test network).

1. Go to our Zilliqa Example application
2. Login with your email address
3. Copy your Zilliqa public address
4. Go to the ZIL Faucet****
5. Paste your copied Zilliqa public address in the text input
6. You can receive 300 test ZIL
7. Now you can use your test ZIL in our example app****

Call Extension Method

To deploy a smart contract, you can call the magic.zilliqa.deployContract method.

{% tabs %} {% tab title="ES Modules/TypeScript" %}

import { Magic } from 'magic-sdk';
import { ZilliqaExtension } from '@magic-ext/zilliqa';
const { BN, Long, bytes, units } = require('@zilliqa-js/util');
 
const magic = new Magic('YOUR_API_KEY', {
  extensions: [
    new ZilliqaExtension({
      rpcUrl: 'Zilliqa_RPC_NODE_URL'
    })
  ]
});

const wallet = await magic.zilliqa.getWallet();

const address = wallet.address;

const code = `scilla_version 0
 
    (* HelloWorld contract *)
 
    import ListUtils
 
    (***************************************************)
    (*               Associated library                *)
    (***************************************************)
    library HelloWorld
 
    let not_owner_code = Int32 1
    let set_hello_code = Int32 2
 
    (***************************************************)
    (*             The contract definition             *)
    (***************************************************)
 
    contract HelloWorld
    (owner: ByStr20)
 
    field welcome_msg : String = ""
 
    transition setHello (msg : String)
      is_owner = builtin eq owner _sender;
      match is_owner with
      | False =>
        e = {_eventname : "setHello()"; code : not_owner_code};
        event e
      | True =>
        welcome_msg := msg;
        e = {_eventname : "setHello()"; code : set_hello_code};
        event e
      end
    end
 
 
    transition getHello ()
        r <- welcome_msg;
        e = {_eventname: "getHello()"; msg: r};
        event e
    end`;
 
const init = [
  // this parameter is mandatory for all init arrays
  {
      vname: '_scilla_version',
      type: 'Uint32',
      value: '0',
  },
  {
      vname: 'owner',
      type: 'ByStr20',
      value: `${address}`,
  },
];

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

const myGasPrice = units.toQa('1000', units.Units.Li);

const params = {
  version: VERSION,
  gasPrice: myGasPrice,
  gasLimit: Long.fromNumber(10000),
}

const result = await magic.zil.deployContract(
  init, code, params, 33, 1000, false
)


console.log('deploy contract', result);

{% endtab %} {% endtabs %}