Refresh Prices

import {
    createSolanaRpc,
    createSolanaRpcSubscriptions,
    pipe,
    createTransactionMessage,
    setTransactionMessageFeePayerSigner,
    setTransactionMessageLifetimeUsingBlockhash,
    appendTransactionMessageInstructions,
    signTransactionMessageWithSigners,
    getSignatureFromTransaction,
    assertIsTransactionWithinSizeLimit,
    sendAndConfirmTransactionFactory,
} from "@solana/kit";
import { parseKeypairFile } from "@kamino-finance/klend-sdk/dist/utils/signer";
import { Scope, SCOPE_MAINNET_HUBBLE_FEED } from "@kamino-finance/scope-sdk";

const KEYPAIR_FILE = "/path/to/your/keypair.json";
const RPC_ENDPOINT = "https://api.mainnet-beta.solana.com";
const WS_ENDPOINT = "wss://api.mainnet-beta.solana.com";

// Slot indices to refresh (e.g. SOL, ETH, BTC on the Hubble feed).
const TOKENS = [0, 1, 2];

const signer = await parseKeypairFile(KEYPAIR_FILE);
const rpc = createSolanaRpc(RPC_ENDPOINT);
const rpcSubscriptions = createSolanaRpcSubscriptions(WS_ENDPOINT);
const scope = new Scope("mainnet-beta", rpc);

const ix = await scope.refreshPriceListIx(
    { config: SCOPE_MAINNET_HUBBLE_FEED.configuration },
    TOKENS,
);
if (!ix) console.log(`Nothing to refresh for tokens [${TOKENS}]`);

console.log(`Built refresh ix: program ${ix.programAddress}, ${ix.accounts?.length ?? 0} accounts`);

const { value: blockhash } = await rpc
    .getLatestBlockhash({ commitment: "finalized" })
    .send();

const transactionMessage = pipe(
    createTransactionMessage({ version: 0 }),
    (m) => setTransactionMessageFeePayerSigner(signer, m),
    (m) => setTransactionMessageLifetimeUsingBlockhash(blockhash, m),
    (m) => appendTransactionMessageInstructions([ix], m),
);

const signedTransaction = await signTransactionMessageWithSigners(transactionMessage);
assertIsTransactionWithinSizeLimit(signedTransaction);
const signature = getSignatureFromTransaction(signedTransaction);

await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(signedTransaction, {
    commitment: "confirmed",
    skipPreflight: true,
});

console.log("Refresh successful! Signature:", signature);