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import config from "$config";
import { g, s } from "$lib/db";
import { err } from "$lib/logging";
import { sleep } from "$lib/utils";
import got from "got";
import WebSocket from "ws";
export let rate;
let last;
let ws;
const connect = async () => {
if (ws && ws.readyState === 1 && Date.now() - last < 5000) return;
if (ws) ws.terminate() && (await sleep(Math.round(Math.random() * 1000)));
ws = new WebSocket("wss://stream.binance.com:9443/ws/btcusdt@miniTicker");
ws.onmessage = async (event) => {
try {
const msg = JSON.parse(event.data);
const rates = (await g("rates")) || {};
const { fx } = (await g("fx")) || {};
if (!fx) return;
Object.keys(fx).map((symbol) => {
rates[symbol] = msg.c * fx[symbol];
});
try {
rates.IRT = (
(await got("https://api.nobitex.ir/v2/orderbook/BTCIRT").json()) as any
).lastTradePrice;
} catch (e) {}
rate = msg.c;
s("rate", rate);
s("rates", rates);
last = Date.now();
} catch (e) {
console.log(e);
err("binance message error", e.message);
}
};
ws.onerror = async (error) => {
err("binance socket error", error.message);
};
return ws;
};
export const getFx = async () => {
connect();
let date = 0;
let fx = await g("fx");
if (fx) ({ date, fx } = fx);
if (Date.now() - date > 24 * 60 * 60 * 1000) {
date = Date.now();
try {
if (config.fixer) {
({ rates: fx } = (await got(
`http://data.fixer.io/api/latest?access_key=${config.fixer}&base=USD`,
).json()) as any);
} else {
({ fx } = (await got("https://coinos.io/api/fx").json()) as any);
}
const USD = fx.USD;
Object.keys(fx).map((k) => {
fx[k] = fx[k] / USD;
});
await s("fx", { date, fx });
} catch (e) {
err("error fetching rates", e.message);
}
}
setTimeout(getFx, 30000);
};
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