import { moscowDate } from "@/shared/lib";

const ISO_MONTH_LENGTH = 7;

function bankDateInputValue(value: string) {
	return value.replace(/^(\d{2})\.(\d{2})\.(\d{4})$/, "$3-$2-$1");
}

function bankMonth(value: null | string) {
	return value && value >= "0001-01" && /^\d{4}-(?:0[1-9]|1[0-2])$/.test(value)
		? value
		: bankToday().slice(0, ISO_MONTH_LENGTH);
}

function bankToday() {
	return moscowDate(new Date());
}

export { bankDateInputValue, bankMonth, bankToday };