// ethers.js v6
import { ethers } from 'ethers';

const KAIROS = '0xCA3d9274154dE7829Ef4C2BBB144fE954D12316b';
const provider = new ethers.JsonRpcProvider('https://bsc-dataseed1.binance.org');
const contract = new ethers.Contract(KAIROS, [
  'function balanceOf(address) view returns (uint256)',
  'function decimals() view returns (uint8)',
], provider);

const balance = await contract.balanceOf('0xYourAddress');
console.log('KAIROS:', ethers.formatEther(balance));

const ROUTER = '0x4F8C99a49d04790Ea8C48CC60F88DB327e509Cd6';
const router = new ethers.Contract(ROUTER, [
  'function swapExactTokensForTokens(uint,uint,address[],address,uint) returns (uint[])',
], signer);

// Swap 100 KAIROS → USDT
const amountIn = ethers.parseEther('100');
const path = [KAIROS, '0x55d398326f99059fF775485246999027B3197955']; // KAIROS → USDT
const deadline = Math.floor(Date.now() / 1000) + 600;

await router.swapExactTokensForTokens(
  amountIn, 0, path, signer.address, deadline
);

// Bridge + Swap in one transaction
const params = new URLSearchParams({
  fromChain: '56',      // BSC
  toChain: '8453',      // Base
  fromToken: '0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee', // BNB
  toToken: KAIROS,       // KAIROS on Base
  fromAmount: ethers.parseEther('0.1').toString(),
  fromAddress: wallet.address,
  slippage: '0.005',
  integrator: 'kairos-exchange',
});

const res = await fetch(`https://li.quest/v1/quote?${params}`);
const quote = await res.json();

// Execute bridge+swap
await signer.sendTransaction(quote.transactionRequest);

const REGISTRY = '0x35e76828D1f3969CDfAB39c01C7d9C6188160e9b';
const registry = new ethers.Contract(REGISTRY, [
  'function registerToken(uint256,address,string,string,uint8,string) payable',
  'function getToken(uint256,address) view returns (tuple(string,string,uint8,string,bool,address,uint256))',
], signer);

// Register a token (fee: 0.01 BNB)
await registry.registerToken(
  56, tokenAddress, 'My Token', 'MTK', 18,
  'https://example.com/logo.png',
  { value: ethers.parseEther('0.01') }
);

// scripts/deploy-create2.js (simplified)
const NICKS_FACTORY = '0x4e59b44847b379578588920cA78FbF26c0B4956C';
const salt = ethers.id('kairos-v2-your-contract-v1'); // 32 bytes

// Get bytecode with constructor args
const Factory = await ethers.getContractFactory('YourContract');
const initCode = Factory.bytecode + Factory.interface.encodeDeploy([owner]).slice(2);

// compute address before deploy
const address = ethers.getCreate2Address(NICKS_FACTORY, salt, ethers.keccak256(initCode));
console.log('Will deploy to:', address);

// Deploy on each chain
for (const chain of chains) {
  const tx = await wallet.sendTransaction({
    to: NICKS_FACTORY,
    data: salt + initCode.slice(2),
  });
  await tx.wait();
}

npm install @kairos-network/sdk ethers

import { KairosClient } from '@kairos-network/sdk';

const client = new KairosClient({
  chainId: 56,
  rpcUrl: 'https://bsc-dataseed1.binance.org',
});

// Get KAIROS balance
const balance = await client.getBalance('0xYourAddress');

// Get swap quote
const quote = await client.getSwapQuote({
  fromToken: 'BNB',
  toToken: 'KAIROS',
  amount: '1.0',
});

// Execute swap
const tx = await client.swap(quote, signer);

import { getCrossChainQuote, executeCrossChainSwap, monitorBridgeStatus }
  from './services/crossChainSwap';

// Get quote: BNB on BSC → KAIROS on Base
const quote = await getCrossChainQuote({
  fromChainId: 56,
  toChainId: 8453,
  fromToken: 'native',
  toToken: '0xCA3d9274154dE7829Ef4C2BBB144fE954D12316b',
  fromAmount: ethers.parseEther('0.1').toString(),
  fromAddress: wallet.address,
});

console.log('Route:', quote.route);
console.log('ETA:', quote.executionTime, 'seconds');
console.log('Fee:', '$' + quote.fee);

// Execute (one TX from user)
const result = await executeCrossChainSwap(quote, signer, (status, data) => {
  console.log(status, data.message); // 'bridging', 'monitoring', etc.
});

// Monitor bridge delivery
monitorBridgeStatus(result.txHash, 56, 8453, (update) => {
  if (update.status === 'complete') {
    console.log('Tokens received!', update.destinationTxHash);
  }
});