import { afterEach, expect, it, vi } from "vitest";

import { bankPeriod } from "./period";

afterEach(() => vi.useRealTimers());

it.each([
	["0001-01", "0001-01-01", "0001-01-31"],
	["0099-12", "0099-12-01", "0099-12-31"],
	["2026-09", "2026-09-01", "2026-09-30"],
	["2024-02", "2024-02-01", "2024-02-29"],
	["0004-02", "0004-02-01", "0004-02-29"],
])("keeps the ISO year for legacy month %s", (month, from, to) => {
	expect(bankPeriod(new URLSearchParams({ month }))).toEqual({ from, to });
});

it("rejects zero year consistently in legacy and explicit periods", () => {
	vi.useFakeTimers();
	vi.setSystemTime(new Date("2026-09-27T10:00:00Z"));
	for (const query of ["month=0000-01", "from=0000-01-01&to=0000-01-31"]) {
		expect(bankPeriod(new URLSearchParams(query))).toEqual({
			from: "2026-09-01",
			to: "2026-09-30",
		});
	}
});