Orderly Trading Orders

import { signAsync } from '@noble/ed25519';
async function placeOrder(order: OrderRequest) {
  const timestamp = Date.now();
  const body = JSON.stringify(order);
  const message = ${timestamp}POST/v1/order${body};
  const signature = await signAsync(new TextEncoder().encode(message), privateKey);
  // Encode as base64url (browser & Node.js compatible)
  const base64 = btoa(String.fromCharCode(...signature));
  const base64url = base64.replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '');
  const response = await fetch('https://api.orderly.org/v1/order', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'orderly-timestamp': String(timestamp),
      'orderly-account-id': accountId,
      'orderly-key': ed25519:${publicKeyBase58},
      'orderly-signature': base64url,
    },
    body,
  });
  return response.json();
}
// Place a limit buy order
const order = await placeOrder({
  symbol: 'PERP_ETH_USDC',
  side: 'BUY',
  order_type: 'LIMIT',
  order_price: 3000,
  order_quantity: 0.1,
});