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This commit is contained in:
Yash Karandikar 2021-10-04 11:39:16 -05:00
parent 5629f26638
commit 2492318c9e
1 changed files with 4 additions and 1 deletions
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5
concurrency/src/Exchanger.tsx
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@ -13,13 +13,15 @@ function Exchanger() {
useEffect(() => {
let saved = Number(localStorage.getItem("saved"));
if (Math.floor(Date.now() / 1000) - saved > 3600) {
if (Math.floor(Date.now() / 1000) - saved > 86400) { // Cache rates for 24 hours
// If it's been more tha 24 hours, fetch new rates
axios.get(process.env.API_URL).then(resp => {
setRates(resp.data);
localStorage.setItem("saved", Math.floor(Date.now() / 1000).toString());
localStorage.setItem("rates", JSON.stringify(resp.data));
});
} else {
// Otherwise, just grab them from localstorage
let data = JSON.parse(localStorage.getItem("rates"));
setRates(data);
}
@ -72,6 +74,7 @@ function Exchanger() {
<input type="text" value={inputOne} onChange={handleInputOne} />
<input type="text" value={result} readOnly />
<select value={selectedOne} onChange={handleSelectedOne}>
{/* Map currency names to dropdown values */}
{Object.keys(rates.conversion_rates).map((currency, index) => <option key={index}>{currency}</option>)}
</select>
<select value={selectedTwo} onChange={handleSelectedTwo}>