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fix: add native lamports charge #72

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Merged
GabrielePicco merged 1 commit into from
Mar 30, 2026
Merged

fix: add native lamports charge #72

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2 changes: 1 addition & 1 deletion spl-tokens/app/app/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@
"dependencies": {
"@coral-xyz/anchor": "^0.32.1",
"@craco/craco": "^7.1.0",
"@magicblock-labs/ephemeral-rollups-sdk": "^0.10.2",
"@magicblock-labs/ephemeral-rollups-sdk": "^0.10.3",
"@solana/wallet-adapter-base": "^0.9.23",
"@solana/wallet-adapter-react": "^0.15.35",
"@solana/wallet-adapter-react-ui": "^0.9.35",
Expand Down
133 changes: 133 additions & 0 deletions spl-tokens/app/app/src/App.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ import {
import {
DELEGATION_PROGRAM_ID,
deriveEphemeralAta,
deriveLamportsPda,
deriveRentPda,
deriveShuttleEphemeralAta,
deriveShuttleWalletAta,
Expand All @@ -22,6 +23,7 @@ import {
ensureTransferQueueCrankIx,
initRentPdaIx,
initTransferQueueIx,
lamportsDelegatedTransferIx,
magicFeeVaultPdaFromValidator,
transferSpl,
withdrawSpl,
Expand Down Expand Up @@ -473,6 +475,8 @@ const App: React.FC = () => {
const [privateMinDelayMs, setPrivateMinDelayMs] = useState('0');
const [privateMaxDelayMs, setPrivateMaxDelayMs] = useState('0');
const [privateSplitCount, setPrivateSplitCount] = useState('1');
const [lamportsTransferDestination, setLamportsTransferDestination] = useState('');
const [lamportsTransferAmount, setLamportsTransferAmount] = useState('1000000');

// Cached Blockhash
const cachedEphemeralBlockhashRef = useRef<CachedBlockhash | null>(null)
Expand Down Expand Up @@ -1375,6 +1379,83 @@ const App: React.FC = () => {
}
}, [accounts, loadSetupQueueKeypair, queueMintAddress]);

const handleLamportsTransfer = useCallback(async () => {
setTransactionError(null);
setTransactionSuccess(null);

const destinationText = lamportsTransferDestination.trim();
if (!destinationText) {
setTransactionError('Lamports destination public key is required.');
return;
}

const amountText = lamportsTransferAmount.trim();
if (!/^\d+$/.test(amountText)) {
setTransactionError('Lamports amount must be a whole number.');
return;
}

try {
setIsSubmitting(true);

const configuredQueuePayer = await loadSetupQueueKeypair();
const payer = configuredQueuePayer ?? accounts[0]?.keypair;
if (!payer) {
setTransactionError('Lamports payer not available.');
return;
}

const destination = new PublicKey(destinationText);
const amount = BigInt(amountText);
if (amount <= 0n) {
setTransactionError('Lamports amount must be greater than 0.');
return;
}

const payerBalance = BigInt(await connection.getBalance(payer.publicKey, 'confirmed'));
if (payerBalance <= amount) {
setTransactionError('Lamports payer balance is too low for this transfer.');
return;
}

const salt = crypto.getRandomValues(new Uint8Array(32));
const [lamportsPda] = deriveLamportsPda(payer.publicKey, destination, salt);
console.log("Lamports PDA:", lamportsPda.toBase58());

const tx = new Transaction().add(
lamportsDelegatedTransferIx(
payer.publicKey,
destination,
amount,
salt,
),
);
tx.feePayer = payer.publicKey;

const sig = await sendAndConfirmTransaction(
connection,
tx,
[payer],
{
commitment: 'confirmed',
preflightCommitment: 'confirmed',
skipPreflight: true,
},
);

setTransactionSuccess(
`Lamports transfer submitted for ${destination.toBase58()} via ${lamportsPda.toBase58()}: ${sig.substring(0, 10)}...${sig.substring(sig.length - 10)}`,
);
await refreshBalances();
} catch (e: any) {
setTransactionError(await formatTransactionError(e, connection));
} finally {
setIsSubmitting(false);
}
}, [accounts, connection, lamportsTransferAmount, lamportsTransferDestination, loadSetupQueueKeypair, refreshBalances]);

const lamportsTransferSender = setupQueueKeypairPublicKey ?? accounts[0]?.keypair.publicKey ?? null;

return (
<>
<style>{`
Expand Down Expand Up @@ -1993,6 +2074,58 @@ const App: React.FC = () => {
</div>
</div>

<div style={{ height: 24 }} />

<div style={CARD_STYLE}>
<div style={{ height: 4, borderRadius: 999, background: 'linear-gradient(90deg,#22d3ee,#a78bfa)', marginBottom: 12, opacity: 0.9 }} />
<div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
<div style={{ color: '#e5e7eb', fontSize: 14, fontWeight: 600 }}>
Lamports transfer
</div>
{lamportsTransferSender && (
<div style={{ color: '#9ca3af', fontSize: 12, wordBreak: 'break-all' }}>
Sender{' '}
<span style={{ fontFamily: 'monospace', color: '#e5e7eb' }}>
{lamportsTransferSender.toBase58()}
</span>
{setupQueueKeypairPublicKey ? ' (queue override)' : ' (account #1)'}
</div>
)}
<div style={{ display: 'flex', gap: 12, alignItems: 'center', flexWrap: 'wrap' }}>
<label style={{ display: 'flex', alignItems: 'center', gap: 8, color: '#9ca3af', fontSize: 12 }}>
Lamports
<input
type="text"
inputMode="numeric"
value={lamportsTransferAmount}
onChange={e => setLamportsTransferAmount(e.target.value.replace(/[^0-9]/g, ''))}
placeholder="1000000"
style={{ ...INPUT_STYLE, width: 140 }}
/>
</label>

<button
onClick={handleLamportsTransfer}
disabled={isSubmitting || !lamportsTransferDestination.trim() || !lamportsTransferAmount.trim()}
style={{ ...BUTTON_STYLE, cursor: isSubmitting || !lamportsTransferDestination.trim() || !lamportsTransferAmount.trim() ? 'not-allowed' : 'pointer', opacity: isSubmitting || !lamportsTransferDestination.trim() || !lamportsTransferAmount.trim() ? 0.6 : 1 }}
>
Transfer lamports
</button>

<label style={{ display: 'flex', alignItems: 'center', gap: 8, color: '#9ca3af', fontSize: 12, flex: '1 1 320px' }}>
Destination
<input
type="text"
value={lamportsTransferDestination}
onChange={e => setLamportsTransferDestination(e.target.value)}
placeholder="Public key"
style={{ ...INPUT_STYLE, minWidth: 0, width: '100%' }}
/>
</label>
</div>
</div>
</div>

{isSubmitting && (<div style={{
display: 'flex',
justifyContent: 'center',
Expand Down
8 changes: 4 additions & 4 deletions spl-tokens/app/app/yarn.lock
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Original file line number Diff line number Diff line change
Expand Up @@ -1870,10 +1870,10 @@
dependencies:
"@lit-labs/ssr-dom-shim" "^1.5.0"

"@magicblock-labs/ephemeral-rollups-sdk@^0.10.2":
version "0.10.2"
resolved "https://registry.yarnpkg.com/@magicblock-labs/ephemeral-rollups-sdk/-/ephemeral-rollups-sdk-0.10.2.tgz#3879c85dc616f3863b5ff6d475b95451f27d80e7"
integrity sha512-b3icnaiSpNar9U5RAn4zcBUylxjDAvTbTFFQaPRoayDL0+Jjw3hGN/ZHNCLwLSykw3o11cOExOCky66a5I+3CA==
"@magicblock-labs/ephemeral-rollups-sdk@^0.10.3":
version "0.10.3"
resolved "https://registry.yarnpkg.com/@magicblock-labs/ephemeral-rollups-sdk/-/ephemeral-rollups-sdk-0.10.3.tgz#2b68b0dece5e78b12573b8464da9c54d813b85ac"
integrity sha512-pmr9m7GDAQXoMxhTlIvuaK9zPR6n5UmXqPQLgEmviIFsbxFWwVEcajEOz2OLyw8+uK4u6sx1vrR9LIZrafqlkw==
dependencies:
"@noble/curves" "^1.4.2"
"@noble/hashes" "^1.4.0"
Expand Down
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