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feat: live exchange rate display in payment form (#262) #409

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Merged
Mystery-CLI merged 2 commits into from
Apr 25, 2026
Merged

feat: live exchange rate display in payment form (#262) #409

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5faedb3
feat: live exchange rate display in payment form (#262)
manuelusman73-png Apr 24, 2026
6f58ce0
Merge branch 'Ethereal-Future:main' into feat/issue-262-live-exchange…
manuelusman73-png Apr 24, 2026
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24 changes: 13 additions & 11 deletions frontend/src/App.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -89,7 +89,7 @@ function App() {

const wsStatus = useWebSocket(account?.publicKey ?? null, handleWsMessage);
const { status: networkStatus } = useNetworkStatus();
const xlmUsdRate = useExchangeRate(lastWsMessage);
const { rate: xlmUsdRate, loading: rateLoading } = useExchangeRate(lastWsMessage);

useEffect(() => {
const onKeyDown = (e) => {
Expand Down Expand Up @@ -542,11 +542,12 @@ function App() {
)}
</AnimatePresence>
<FeeDisplay amount={amount} visible={amountValid} />
{amountValid && xlmUsdRate && (
<p className="rate-estimate" aria-live="polite">
≈ ${(parseFloat(amount) * xlmUsdRate).toFixed(2)} USD
<span className="rate-source"> · live rate</span>
</p>
{amountValid && (xlmUsdRate
? <p className="rate-estimate" aria-live="polite">
≈ ${(parseFloat(amount) * xlmUsdRate).toFixed(2)} USD
<span className="rate-source"> · live rate</span>
</p>
: rateLoading && <p className="rate-estimate rate-estimate--loading" aria-live="polite">Loading rate…</p>
)}
<div style={{ display: 'flex', gap: 8, alignItems: 'center', flexWrap: 'wrap' }}>
<motion.button onClick={sendPayment} {...tap} disabled={!recipientValid || !amountValid || loading === 'send'}>
Expand Down Expand Up @@ -758,11 +759,12 @@ function App() {
</div>

<FeeDisplay amount={amount} visible={amountValid} />
{amountValid && xlmUsdRate && (
<p className="rate-estimate" aria-live="polite">
≈ ${(parseFloat(amount) * xlmUsdRate).toFixed(2)} USD
<span className="rate-source"> · live rate</span>
</p>
{amountValid && (xlmUsdRate
? <p className="rate-estimate" aria-live="polite">
≈ ${(parseFloat(amount) * xlmUsdRate).toFixed(2)} USD
<span className="rate-source"> · live rate</span>
</p>
: rateLoading && <p className="rate-estimate rate-estimate--loading" aria-live="polite">Loading rate…</p>
)}
<div style={{ display: 'flex', gap: 8, alignItems: 'center', flexWrap: 'wrap' }}>
<motion.button
Expand Down
8 changes: 5 additions & 3 deletions frontend/src/hooks/useExchangeRate.js
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Expand Up @@ -6,15 +6,17 @@ import axios from 'axios';
* rateChange WebSocket events (passed in as `wsMessage`).
*
* @param {object|null} wsMessage – latest message from useWebSocket's onMessage
* @returns {number|null} rate – XLM price in USD, or null while loading
* @returns {{ rate: number|null, loading: boolean }}
*/
export function useExchangeRate(wsMessage) {
const [rate, setRate] = useState(null);
const [loading, setLoading] = useState(true);

useEffect(() => {
axios.get('/api/stellar/exchange-rate/XLM/USD')
.then(({ data }) => setRate(data.rate))
.catch(() => {});
.catch(() => {})
.finally(() => setLoading(false));
}, []);

useEffect(() => {
Expand All @@ -23,5 +25,5 @@ export function useExchangeRate(wsMessage) {
}
}, [wsMessage]);

return rate;
return { rate, loading };
}
1 change: 1 addition & 0 deletions frontend/src/index.css
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Original file line number Diff line number Diff line change
Expand Up @@ -795,6 +795,7 @@ kbd {
font-weight: 500;
}
.rate-source { color: #94a3b8; font-weight: 400; font-size: 11px; }
.rate-estimate--loading { color: #94a3b8; font-style: italic; }
[data-theme="dark"] .rate-estimate { color: #38bdf8; }
[data-theme="dark"] .rate-source { color: #64748b; }
.fee-tooltip {
Expand Down
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