import { describe, it, expect, vi, afterEach } from 'vitest';
import { cleanup, render } from 'vitest-browser-svelte';
import { page } from 'vitest/browser';
import ShortcutCheatsheet from './ShortcutCheatsheet.svelte';

afterEach(cleanup);

describe('ShortcutCheatsheet', () => {
	it('is not in the accessibility tree when closed', async () => {
		render(ShortcutCheatsheet, { open: false, onClose: vi.fn() });
		await expect.element(page.getByRole('dialog')).not.toBeInTheDocument();
	});

	it('opens as a modal dialog with a labelled heading when open', async () => {
		render(ShortcutCheatsheet, { open: true, onClose: vi.fn() });
		await expect.element(page.getByRole('dialog')).toBeInTheDocument();
		await expect.element(page.getByRole('heading')).toBeInTheDocument();
	});

	it('lists all eight shortcut rows', async () => {
		render(ShortcutCheatsheet, { open: true, onClose: vi.fn() });
		const dialog = page.getByRole('dialog').element() as HTMLElement;
		const keyCaps = dialog.querySelectorAll('kbd');
		expect(keyCaps.length).toBe(8);
	});

	it('shows the autosave footer line', async () => {
		render(ShortcutCheatsheet, { open: true, onClose: vi.fn() });
		const dialog = page.getByRole('dialog').element() as HTMLElement;
		expect(dialog.textContent).toContain('automatisch');
	});

	it('calls onClose when Escape is pressed', async () => {
		const onClose = vi.fn();
		render(ShortcutCheatsheet, { open: true, onClose });
		const dialog = page.getByRole('dialog').element() as HTMLDialogElement;
		dialog.dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape', bubbles: true }));
		// native <dialog> turns Esc into a 'cancel' + 'close'; assert close fired onClose
		dialog.dispatchEvent(new Event('close'));
		expect(onClose).toHaveBeenCalled();
	});

	it('calls onClose when the backdrop is clicked', async () => {
		const onClose = vi.fn();
		render(ShortcutCheatsheet, { open: true, onClose });
		const dialog = page.getByRole('dialog').element() as HTMLDialogElement;
		// a click whose target is the dialog element itself is a backdrop click
		dialog.dispatchEvent(new MouseEvent('click', { bubbles: true }));
		expect(onClose).toHaveBeenCalled();
	});

	it('does not close on "?" while open (open-only, not a toggle)', async () => {
		const onClose = vi.fn();
		render(ShortcutCheatsheet, { open: true, onClose });
		const dialog = page.getByRole('dialog').element() as HTMLDialogElement;
		dialog.dispatchEvent(new KeyboardEvent('keydown', { key: '?', bubbles: true }));
		expect(onClose).not.toHaveBeenCalled();
	});

	it('focuses the close button on open', async () => {
		render(ShortcutCheatsheet, { open: true, onClose: vi.fn() });
		const closeButton = page.getByRole('button', { name: /schließen/i }).element();
		expect(document.activeElement).toBe(closeButton);
	});
});
