bankcode-bic/dist/commands/download.js

Convert bank codes from IBAN to BICs, Name of bank. Currently supports only some selected EU countries.

import { Cache } from "../libs/cache.js";
import fs from "node:fs";
import { join } from "node:path";

//#region src/commands/download.ts
async function DownloadCommand(outputDirPath, options) {
	const { filterCountries } = options;
	const downloadCache = new Cache();
	if (options?.clearCache) {
		await downloadCache.clear();
		console.info("Cache cleared.");
	}
	const noCache = options?.noCache || false;
	const ttlMs = options?.ttlMs ?? 1440 * 60 * 1e3;
	const countries = filterCountries?.map((c) => c.toLowerCase()) ?? [
		"at",
		"be",
		"de",
		"fr",
		"es"
	];
	for (const country of countries) {
		const importFilePath = `../download/${country}.js`;
		const { getCacheKey, getDownloadUrl, downloadCSV, parseCSV } = await import(importFilePath);
		const cacheKey = getCacheKey(country);
		let downloadUrl = noCache ? null : await downloadCache.get(cacheKey);
		let isCached = downloadUrl !== null;
		if (!downloadUrl) {
			downloadUrl = await getDownloadUrl();
			if (!downloadUrl) throw new Error("Download URL not found");
			if (!noCache) await downloadCache.set(cacheKey, downloadUrl, ttlMs);
		}
		console.info(`${isCached ? "" : "Scraped "}Download URL${isCached ? " (cached)" : ""}: ${downloadUrl.url}`);
		let response = noCache ? null : await downloadCache.get(downloadUrl.url);
		let responseFetchedDate = noCache ? null : await downloadCache.get(`${downloadUrl.url}|fetchedDate`);
		isCached = response !== null;
		if (!response) {
			response = await downloadCSV(downloadUrl.url);
			responseFetchedDate = (/* @__PURE__ */ new Date()).toISOString();
			if (!response) throw new Error("Failed to fetch data from download URL");
			if (!noCache) {
				await downloadCache.set(downloadUrl.url, response, ttlMs);
				await downloadCache.set(`${downloadUrl.url}|fetchedDate`, responseFetchedDate, ttlMs);
			}
		}
		console.info(`Fetched data ${isCached ? "(cached) " : ""}Size: ${response.length} bytes`);
		const dataFormat = downloadUrl.dataFormat;
		const outputFilePath = join(outputDirPath, `${country}.${dataFormat}`);
		fs.writeFileSync(outputFilePath, response);
		console.info(`\nSaved dataset for '${country}' size ${response.length} bytes, format '${dataFormat}' to:\n${outputFilePath}\n`);
	}
}

//#endregion
export { DownloadCommand };