// tests/lib/storage.test.js
import { describe, it, expect, beforeAll, afterAll } from "vitest";
import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";

import {
	listBranches,
	listYears,
	listMonths,
	listDays,
	listFiles,
} from "@/lib/storage";

let tmpRoot;

beforeAll(async () => {
	// Create a unique temporary directory for the tests
	tmpRoot = await fs.mkdtemp(path.join(os.tmpdir(), "storage-test-"));

	// Point NAS_ROOT_PATH to our temp directory
	process.env.NAS_ROOT_PATH = tmpRoot;

	// Create a fake directory tree:
	// tmpRoot/NL01/2024/10/23/test.pdf
	await fs.mkdir(path.join(tmpRoot, "NL01", "2024", "10", "23"), {
		recursive: true,
	});

	await fs.writeFile(
		path.join(tmpRoot, "NL01", "2024", "10", "23", "test.pdf"),
		"dummy-pdf-content"
	);

	// Add snapshot folder which should be ignored
	await fs.mkdir(path.join(tmpRoot, "@Recently-Snapshot"));
});

afterAll(async () => {
	// Clean up the temporary directory after tests
	await fs.rm(tmpRoot, { recursive: true, force: true });
});

describe("storage: listBranches", () => {
	it("returns branch names and filters snapshots", async () => {
		const branches = await listBranches();
		expect(branches).toEqual(["NL01"]);
	});
});

describe("storage: year/month/day helpers", () => {
	it("returns years for a branch", async () => {
		const years = await listYears("NL01");
		expect(years).toEqual(["2024"]);
	});

	it("returns months for a branch/year", async () => {
		const months = await listMonths("NL01", "2024");
		expect(months).toEqual(["10"]);
	});

	it("returns days for a branch/year/month", async () => {
		const days = await listDays("NL01", "2024", "10");
		expect(days).toEqual(["23"]);
	});
});

describe("storage: listFiles", () => {
	it("returns PDF files with relativePath", async () => {
		const files = await listFiles("NL01", "2024", "10", "23");
		expect(files).toEqual([
			{
				name: "test.pdf",
				relativePath: "NL01/2024/10/23/test.pdf",
			},
		]);
	});
});