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"use client";
import { useEffect, useState } from "react";
import styles from "./calculator.module.css";
import { BitcoinPrice } from "../utils/bitcoin-price";
export const Calculator = () => {
const [sats, setSats] = useState("");
const [btc, setBtc] = useState("");
const [usd, setUsd] = useState("");
const formatCurrency = (val: string) => {
const formatter = new Intl.NumberFormat("en-US", {
style: "currency",
currency: "USD",
maximumFractionDigits: 2,
});
return formatter.format(parseNumber(val));
};
const formatDecimal = (val: any) => {
return val.toLocaleString("fullwide", {
useGrouping: true,
maximumSignificantDigits: 6,
});
};
const parseNumber = (val: string) => {
return parseFloat(val.replace(/[^0-9|.]/g, ""));
};
const btcPrice = parseNumber(BitcoinPrice());
const handleUpdate = (type: string, v: string) => {
const val = parseNumber(v);
let newbtc: number;
switch (type) {
case "sats":
setSats(v);
if (isNaN(val) || v.endsWith(".")) {
return;
}
setSats(formatDecimal(val));
newbtc = val / 100000000;
setBtc(formatDecimal(newbtc));
setUsd(formatCurrency(formatDecimal(newbtc * btcPrice)));
break;
case "btc":
setBtc(v);
if (isNaN(val) || v.endsWith(".")) {
return;
}
setBtc(formatDecimal(val));
setSats(formatDecimal(val * 100000000));
setUsd(formatCurrency(formatDecimal(val * btcPrice)));
break;
case "usd":
setUsd(formatCurrency(v));
if (isNaN(val)) {
return;
}
newbtc = val / btcPrice;
setBtc(formatDecimal(newbtc));
setSats(formatDecimal(newbtc * 100000000));
break;
}
};
useEffect(() => {
// Initialize the calculator with some numbers
handleUpdate("sats", "1000");
}, [btcPrice]);
return (
<form className="flex flex-col">
<label htmlFor="sats">Sats</label>
<input
className={styles.input}
onChange={(e) => handleUpdate("sats", e.target.value)}
value={sats}
type="text"
id="sats"
name="sats"
/>
<label htmlFor="btc">BTC</label>
<input
className={styles.input}
onChange={(e) => handleUpdate("btc", e.target.value)}
value={btc}
type="text"
id="btc"
name="btc"
/>
<label htmlFor="usd">USD</label>
<input
className={styles.input}
onChange={(e) => handleUpdate("usd", e.target.value)}
value={usd}
type="text"
id="usd"
name="usd"
/>
</form>
);
};
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