42 lines
874 B
JavaScript
42 lines
874 B
JavaScript
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import { isToday } from "date-fns";
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import { getRates, cacheRates } from "./cache";
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export const baseCurrency = "usd";
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export const loadCurrencyRates = async () => {
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l("loading currency rates");
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try {
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const res = await fetch(
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`https://cdn.jsdelivr.net/npm/@fawazahmed0/currency-api@latest/v1/currencies/${baseCurrency}.json`,
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);
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return await res.json();
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} catch (e) {
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l("loadCurrencyRates", e);
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return null;
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}
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};
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export const getRate = async (currency) => {
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const cached = getRates();
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if (cached && isToday(cached.date)) {
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l("found rates in cache", cached);
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return cached[baseCurrency][currency];
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}
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const newRates = await loadCurrencyRates();
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if (!newRates) {
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l("failed to download rates");
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return 0;
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}
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l("new rates", newRates);
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cacheRates(newRates);
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return newRates[baseCurrency][currency];
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};
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