Multi-Swap Flow

const response = await fetch('https://api-partner.houdiniswap.com/v2/exchanges/multi', {
  method: 'POST',
  headers: {
    'Authorization': `${API_KEY}:${API_SECRET}`,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    orders: [
      {
        from: '6689b73ec90e45f3b3e51577',       // SOL token id
        to:   '6689b73ec90e45f3b3e51566',       // ETH token id
        amount: 10,
        addressTo: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e'
      },
      {
        from: '6689b73ec90e45f3b3e51577',       // SOL token id
        to:   '6689b73ec90e45f3b3e51558',       // USDC token id
        amount: 25,
        addressTo: '0xABcD1234abcd1234ABCD1234abcd1234ABCD1234',
        anonymous: true                          // enable private routing for this order
      },
      {
        from: '6689b73ec90e45f3b3e51577',       // SOL token id
        to:   '6689b73ec90e45f3b3e51577',       // SOL token id
        amount: 5,
        addressTo: 'RecipientSolanaAddressHere1111111111111111',
        anonymous: true,
        useXmr: true                            // force XMR as anonymous bridge
      }
    ]
  })
});

const result = await response.json();
console.log('Multi ID:', result.multiId);       // shared group identifier

result.orders.forEach((item, i) => {
  if (item.error) {
    console.error(`Order ${i} failed:`, item.error.message, item.error.code);
  } else {
    console.log(`Order ${i} ID:`, item.order.houdiniId);
    console.log(`  Deposit to:`, item.order.depositAddress);
    console.log(`  Send:`, item.order.inAmount, item.order.inSymbol);
    console.log(`  Expires:`, item.order.expires);
  }
});

async function pollMultiStatus(multiId) {
  const response = await fetch(
    `https://api-partner.houdiniswap.com/v2/exchanges/multi/${multiId}`,
    {
      headers: { 'Authorization': `${API_KEY}:${API_SECRET}` }
    }
  );

  const { orders } = await response.json();

  orders.forEach(order => {
    console.log(`${order.houdiniId}: ${order.statusLabel}`);
    // statusLabel values:
    // INITIALIZING  — order being set up
    // NEW / WAITING — awaiting deposit
    // CONFIRMING    — deposit detected, awaiting confirmations
    // EXCHANGING    — CEX is processing
    // ANONYMIZING   — routing through privacy layer (anonymous orders only)
    // FINISHED      — complete, funds sent
    // EXPIRED       — deposit not received in time
    // FAILED        — swap failed
    // REFUNDED      — funds returned to sender
  });

  const allDone = orders.every(o =>
    ['FINISHED', 'FAILED', 'EXPIRED', 'REFUNDED'].includes(o.statusLabel)
  );

  return { orders, allDone };
}

// Poll every 30 seconds until all orders are terminal
const interval = setInterval(async () => {
  const { orders, allDone } = await pollMultiStatus('multi_a1b2c3d4e5f6');
  if (allDone) clearInterval(interval);
}, 30_000);

const senderAddress = 'YourSolanaWalletAddressHere111111111111111111';

const response = await fetch(
  `https://api-partner.houdiniswap.com/v2/exchanges/multi/${multiId}/tx?sender=${senderAddress}`,
  {
    headers: { 'Authorization': `${API_KEY}:${API_SECRET}` }
  }
);

const { chain, transactions } = await response.json();

console.log('Chain:', chain); // "solana"
console.log('Transactions to submit:', transactions.length);

for (const batch of transactions) {
  console.log('Covers order IDs:', batch.houdiniIds); // up to 10 per batch

  // batch.txData.data is a base64-encoded serialized Solana transaction
  const txBytes = Buffer.from(batch.txData.data, 'base64');

  const { Transaction, Connection, clusterApiUrl } = require('@solana/web3.js');
  const connection = new Connection(clusterApiUrl('mainnet-beta'));
  const tx = Transaction.from(txBytes);

  // Sign with your keypair or wallet adapter, then submit
  const signature = await connection.sendRawTransaction(tx.serialize());
  console.log('Submitted batch tx:', signature);
}