type Money = { currency: string; value: string };
type FormatMoneyOptions = {
	withZeroCents?: boolean;
};

function formatDecimal(value: string): string {
	const [integer, fraction] = value.split(".");
	const sign = integer.startsWith("-") ? "-" : "";
	const grouped = (sign ? integer.slice(1) : integer).replace(
		/\B(?=(\d{3})+(?!\d))/g,
		" ",
	);
	return `${sign}${grouped}${fraction ? `,${fraction}` : ""}`;
}

function formatMoney(
	money: Money | null,
	{ withZeroCents = false }: FormatMoneyOptions = {},
): string {
	if (!money) return "—";
	const [integerPart, fractionPart = ""] = money.value.split(".");
	const normalizedFraction =
		withZeroCents && !fractionPart
			? "00"
			: withZeroCents && fractionPart.length === 1
				? `${fractionPart}0`
				: fractionPart;
	return `${formatDecimal(
		`${integerPart}${normalizedFraction ? `.${normalizedFraction}` : ""}`,
	)} ${money.currency === "RUB" ? "₽" : money.currency}`;
}

function formatDate(value: string): string {
	return new Intl.DateTimeFormat("ru-RU", {
		day: "2-digit",
		month: "2-digit",
		year: "numeric",
		timeZone: "UTC",
	}).format(new Date(value));
}

function formatSnapshotTime(value: string): string {
	return new Intl.DateTimeFormat("ru-RU", {
		dateStyle: "short",
		timeStyle: "short",
		timeZone: "UTC",
	}).format(new Date(value));
}

const logoSize = 160;

function instrumentLogoUrl(logoName: string | null | undefined): string | null {
	const stem = logoName?.trim().replace(/\.png$/i, "");
	return stem
		? `https://invest-brands.cdn-tinkoff.ru/${stem}x${logoSize}.png`
		: null;
}

export {
	formatDate,
	formatDecimal,
	formatMoney,
	formatSnapshotTime,
	instrumentLogoUrl,
};