Deploy a NEP-20 Token

git clone https://github.com/yattacorp/nexus-contract-template
cd nexus-contract-template

rustup target add wasm32-unknown-unknown

const TOKEN_NAME: &str = "My Token";
const TOKEN_SYMBOL: &str = "MTK";
const TOKEN_DECIMALS: u8 = 18;

cargo build --target wasm32-unknown-unknown --release

cargo test

npm install @yattacorp/nexus-sdk

import { NexusClient, Wallet } from '@yattacorp/nexus-sdk';
import { readFileSync } from 'fs';

const wallet = Wallet.fromMnemonic(process.env.MNEMONIC!, 'mainnet', undefined, 'zcash');
const client = new NexusClient(
  { rpcUrl: 'https://api.yattacorp.xyz', network: 'mainnet', chain: 'zcash' },
  wallet
);

// Deploy the WASM binary
const wasm = readFileSync(
  './target/wasm32-unknown-unknown/release/my_nexus_contract.wasm'
);
const { contractId } = await client.deployContract(wasm);
console.log('Token deployed at:', contractId);

// Initialize — sets name, symbol, decimals, and mints initial supply to deployer
await client.callContract(contractId, 'init_token', [
  'My Token',                    // name
  'MTK',                         // symbol
  18,                            // decimals
  '1000000000000000000000000',   // initial supply (1,000,000 × 10^18)
]);

console.log('Token initialized');

npx ts-node deploy.ts

const tokenId = contractId; // from deployment above

// Check balance (returns raw integer string)
const balance = await client.queryContract(tokenId, 'balanceOf', [wallet.getAddress()]);
console.log('Balance:', balance);

// Transfer tokens to another address
await client.callContract(tokenId, 'transfer', [
  recipientAddress,
  '1000000000000000000', // 1 token (18 decimals)
]);

// Approve a spender
await client.callContract(tokenId, 'approve', [
  spenderAddress,
  '5000000000000000000', // 5 tokens
]);

// Query total supply
const supply = await client.queryContract(tokenId, 'totalSupply', []);
console.log('Total supply:', supply);