import { Toasty } from "@cloudflare/kumo";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import * as React from "react";
import { describe, it, expect, vi, beforeEach } from "vitest";
import { render } from "vitest-browser-react";

import { MenuList } from "../../src/components/MenuList";

vi.mock("@tanstack/react-router", async () => {
	const actual = await vi.importActual("@tanstack/react-router");
	return {
		...actual,
		Link: ({
			children,
			to,
			...props
		}: {
			children: React.ReactNode;
			to?: string;
			[key: string]: unknown;
		}) => (
			<a href={typeof to === "string" ? to : "#"} {...props}>
				{children}
			</a>
		),
		useNavigate: () => vi.fn(),
	};
});

vi.mock("../../src/lib/api", async () => {
	const actual = await vi.importActual("../../src/lib/api");
	return {
		...actual,
		fetchMenus: vi.fn(),
		createMenu: vi.fn().mockResolvedValue({ name: "new-menu", label: "New Menu" }),
		deleteMenu: vi.fn().mockResolvedValue(undefined),
	};
});

import * as api from "../../src/lib/api";

// ---------------------------------------------------------------------------
// Constants
// ---------------------------------------------------------------------------

const MAIN_MENU_ITEMS_REGEX = /main.*3 items/;
const FOOTER_MENU_ITEMS_REGEX = /footer.*1 items/;
const DELETE_MENU_CONFIRMATION_REGEX = /Are you sure you want to delete this menu/;
const CREATE_MENU_REGEX = /Create Menu/;

function mockMenus() {
	vi.mocked(api.fetchMenus).mockResolvedValue([
		{
			id: "m1",
			name: "main",
			label: "Main Menu",
			itemCount: 3,
			created_at: "",
			updated_at: "",
		},
		{
			id: "m2",
			name: "footer",
			label: "Footer Menu",
			itemCount: 1,
			created_at: "",
			updated_at: "",
		},
	]);
}

function Wrapper({ children }: { children: React.ReactNode }) {
	const qc = new QueryClient({
		defaultOptions: { queries: { retry: false }, mutations: { retry: false } },
	});
	return (
		<Toasty>
			<QueryClientProvider client={qc}>{children}</QueryClientProvider>
		</Toasty>
	);
}

describe("MenuList", () => {
	beforeEach(() => {
		vi.clearAllMocks();
		mockMenus();
	});

	it("displays list of menus with labels and item counts", async () => {
		const screen = await render(<MenuList />, { wrapper: Wrapper });

		await expect.element(screen.getByRole("heading", { name: "Main Menu" })).toBeInTheDocument();
		await expect.element(screen.getByText(MAIN_MENU_ITEMS_REGEX)).toBeInTheDocument();
		await expect.element(screen.getByRole("heading", { name: "Footer Menu" })).toBeInTheDocument();
		await expect.element(screen.getByText(FOOTER_MENU_ITEMS_REGEX)).toBeInTheDocument();
	});

	it("Create Menu button opens dialog", async () => {
		const screen = await render(<MenuList />, { wrapper: Wrapper });

		await screen.getByRole("button", { name: CREATE_MENU_REGEX }).click();
		await expect.element(screen.getByText("Create New Menu")).toBeInTheDocument();
	});

	it("create dialog has name and label inputs", async () => {
		const screen = await render(<MenuList />, { wrapper: Wrapper });

		await screen.getByRole("button", { name: CREATE_MENU_REGEX }).click();

		await expect.element(screen.getByLabelText("Name")).toBeInTheDocument();
		await expect.element(screen.getByLabelText("Label")).toBeInTheDocument();
	});

	it("delete button opens confirmation dialog", async () => {
		const screen = await render(<MenuList />, { wrapper: Wrapper });

		await expect.element(screen.getByRole("heading", { name: "Main Menu" })).toBeInTheDocument();

		await screen.getByRole("button", { name: "Delete main menu" }).click();

		await expect.element(screen.getByRole("heading", { name: "Delete Menu" })).toBeInTheDocument();
		await expect.element(screen.getByText(DELETE_MENU_CONFIRMATION_REGEX)).toBeInTheDocument();
	});

	it("shows empty state when no menus", async () => {
		vi.mocked(api.fetchMenus).mockResolvedValue([]);

		const screen = await render(<MenuList />, { wrapper: Wrapper });

		await expect.element(screen.getByText("No menus yet")).toBeInTheDocument();
		await expect
			.element(screen.getByText("Create your first navigation menu to get started"))
			.toBeInTheDocument();
	});

	it("each menu has an Edit link", async () => {
		const screen = await render(<MenuList />, { wrapper: Wrapper });

		await expect.element(screen.getByRole("heading", { name: "Main Menu" })).toBeInTheDocument();

		const editLinks = screen.getByText("Edit");
		await expect.element(editLinks.first()).toBeInTheDocument();
	});
});
