/* @vitest-environment node */

import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";

vi.mock("@/lib/auth/session", () => ({
	getSession: vi.fn(),
}));

import { getSession } from "@/lib/auth/session";
import { GET } from "./route.js";

describe("GET /api/branches/[branch]/[year]/[month]/days", () => {
	let tmpRoot;
	const originalNasRoot = process.env.NAS_ROOT_PATH;

	beforeEach(async () => {
		vi.clearAllMocks();
		tmpRoot = await fs.mkdtemp(path.join(os.tmpdir(), "api-days-"));
		process.env.NAS_ROOT_PATH = tmpRoot;

		await fs.mkdir(path.join(tmpRoot, "NL01", "2024", "10", "23"), {
			recursive: true,
		});
	});

	afterEach(async () => {
		process.env.NAS_ROOT_PATH = originalNasRoot;
		if (tmpRoot) await fs.rm(tmpRoot, { recursive: true, force: true });
	});

	it("returns 401 when unauthenticated", async () => {
		getSession.mockResolvedValue(null);

		const res = await GET(
			new Request("http://localhost/api/branches/NL01/2024/10/days"),
			{
				params: Promise.resolve({ branch: "NL01", year: "2024", month: "10" }),
			}
		);

		expect(res.status).toBe(401);
		expect(await res.json()).toEqual({ error: "Unauthorized" });
	});

	it("returns 403 when branch user accesses a different branch", async () => {
		getSession.mockResolvedValue({
			role: "branch",
			branchId: "NL01",
			userId: "u1",
		});

		const res = await GET(
			new Request("http://localhost/api/branches/NL02/2024/10/days"),
			{
				params: Promise.resolve({ branch: "NL02", year: "2024", month: "10" }),
			}
		);

		expect(res.status).toBe(403);
		expect(await res.json()).toEqual({ error: "Forbidden" });
	});

	it("returns days for a valid branch/year/month when allowed", async () => {
		getSession.mockResolvedValue({
			role: "admin",
			branchId: null,
			userId: "u2",
		});

		const res = await GET(
			new Request("http://localhost/api/branches/NL01/2024/10/days"),
			{
				params: Promise.resolve({ branch: "NL01", year: "2024", month: "10" }),
			}
		);

		expect(res.status).toBe(200);
		const body = await res.json();
		expect(body).toEqual({
			branch: "NL01",
			year: "2024",
			month: "10",
			days: ["23"],
		});
	});

	it("returns 400 when any param is missing (authenticated)", async () => {
		getSession.mockResolvedValue({
			role: "admin",
			branchId: null,
			userId: "u2",
		});

		const res = await GET(
			new Request("http://localhost/api/branches/NL01/2024//days"),
			{
				params: Promise.resolve({
					branch: "NL01",
					year: "2024",
					month: undefined,
				}),
			}
		);

		expect(res.status).toBe(400);
		expect(await res.json()).toEqual({
			error: "branch, year oder month fehlt",
		});
	});
});