/* @vitest-environment node */

import { describe, it, expect } from "vitest";
import {
	SEARCH_RESULTS_SORT,
	toSearchItemIsoDateKey,
	formatSearchItemDateDe,
	sortSearchItems,
} from "./resultsSorting.js";

describe("lib/frontend/search/resultsSorting", () => {
	it("builds ISO date keys (YYYY-MM-DD) with zero padding", () => {
		expect(toSearchItemIsoDateKey({ year: "2025", month: "1", day: "2" })).toBe(
			"2025-01-02"
		);
	});

	it("formats German date strings (DD.MM.YYYY) with zero padding", () => {
		expect(formatSearchItemDateDe({ year: "2025", month: "1", day: "2" })).toBe(
			"02.01.2025"
		);
	});

	it("RELEVANCE keeps backend order", () => {
		const items = [{ filename: "b.pdf" }, { filename: "a.pdf" }];
		const out = sortSearchItems(items, SEARCH_RESULTS_SORT.RELEVANCE);
		expect(out.map((x) => x.filename)).toEqual(["b.pdf", "a.pdf"]);
	});

	it("DATE_DESC sorts newest date first, then filename asc", () => {
		const items = [
			{ year: "2025", month: "12", day: "18", filename: "b.pdf" },
			{ year: "2025", month: "12", day: "18", filename: "a.pdf" },
			{ year: "2025", month: "01", day: "02", filename: "z.pdf" },
		];

		const out = sortSearchItems(items, SEARCH_RESULTS_SORT.DATE_DESC);

		expect(
			out.map((x) => `${toSearchItemIsoDateKey(x)}|${x.filename}`)
		).toEqual(["2025-12-18|a.pdf", "2025-12-18|b.pdf", "2025-01-02|z.pdf"]);
	});

	it("FILENAME_ASC sorts by filename", () => {
		const items = [
			{ filename: "b.pdf" },
			{ filename: "a.pdf" },
			{ filename: "c.pdf" },
		];

		const out = sortSearchItems(items, SEARCH_RESULTS_SORT.FILENAME_ASC);
		expect(out.map((x) => x.filename)).toEqual(["a.pdf", "b.pdf", "c.pdf"]);
	});
});