Trade a Perpetual

import { getInitializeUserAccountInstruction, findUserAccountPda } from
  '@/app/generated/perp/instructions';

const [userAccount] = await findUserAccountPda({ authority: wallet.address });

const ix = getInitializeUserAccountInstruction({
  authority: wallet,
  payer: wallet,
  userAccount,
});

await sendTransaction(ix);

import { getDepositCollateralInstruction } from '@/app/generated/perp/instructions';

const ix = getDepositCollateralInstruction({
  signer: wallet,
  userAccount,
  market: marketPda,
  userTokenAccount: userUsdcAta,
  collateralVault: market.collateralVault,
  amount: 1_000_000_000n,   // 1,000 USDC (6 decimals)
});

import { PythSolanaReceiver } from '@pythnetwork/pyth-solana-receiver';
const hermes = await fetch(
  `https://hermes.pyth.network/v2/updates/price/latest?ids[]=${SOL_USD_FEED_ID}`
).then((r) => r.json());

const postIxs = await receiver.buildPostPriceUpdateInstructions(
  hermes.binary.data[0],
);

import { getPlaceOrderInstruction } from '@/app/generated/perp/instructions';

const ix = getPlaceOrderInstruction({
  signer: wallet,
  userAccount,
  market: marketPda,
  oracle: priceUpdateAccount,   // from step 3
  orderbook: orderbookPda,
  collateralVault: market.collateralVault,
  feeVault: market.feeVault,
  // remainingAccounts: counterparty user accounts for up to 4 fills
  params: {
    price: 0n,                       // ignored for market orders
    baseAmount: 2_000_000_000n,      // 2 SOL (9 decimals) → ≈2× leverage on 1k USDC
    direction: { __kind: 'Long' },
    postOnly: false,
    isMarket: true,
    maxSlippageBps: 100,
  },
});

await sendTransaction([...postIxs, ix]);

const closeIx = getPlaceOrderInstruction({
  ...commonAccounts,
  params: {
    ...,
    baseAmount: 2_000_000_000n,
    direction: { __kind: 'Short' },  // closes a long
    isMarket: true,
    maxSlippageBps: 100,
  },
});