/* @vitest-environment node */

import { describe, it, expect } from "vitest";
import { getSearchDateRangeValidation } from "./searchDateValidation.js";

describe("lib/frontend/search/searchDateValidation", () => {
	it("returns null when both dates are missing", () => {
		expect(getSearchDateRangeValidation(null, null)).toBe(null);
		expect(getSearchDateRangeValidation(undefined, undefined)).toBe(null);
	});

	it("returns VALIDATION_SEARCH_DATE for invalid from", () => {
		expect(getSearchDateRangeValidation("2026/01/01", null)).toEqual({
			code: "VALIDATION_SEARCH_DATE",
			message: "Invalid from date",
			details: { from: "2026/01/01" },
		});
	});

	it("returns VALIDATION_SEARCH_DATE for invalid to", () => {
		expect(getSearchDateRangeValidation(null, "2026-99-01")).toEqual({
			code: "VALIDATION_SEARCH_DATE",
			message: "Invalid to date",
			details: { to: "2026-99-01" },
		});
	});

	it("returns VALIDATION_SEARCH_RANGE when from > to", () => {
		expect(getSearchDateRangeValidation("2026-01-10", "2026-01-09")).toEqual({
			code: "VALIDATION_SEARCH_RANGE",
			message: "Invalid date range",
			details: { from: "2026-01-10", to: "2026-01-09" },
		});
	});

	it("accepts from === to as a valid single-day range", () => {
		expect(getSearchDateRangeValidation("2026-01-10", "2026-01-10")).toBe(null);
	});

	it("accepts open ranges", () => {
		expect(getSearchDateRangeValidation("2026-01-10", null)).toBe(null);
		expect(getSearchDateRangeValidation(null, "2026-01-10")).toBe(null);
	});

	it("accepts a valid range", () => {
		expect(getSearchDateRangeValidation("2026-01-01", "2026-01-31")).toBe(null);
	});
});