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

afterEach(cleanup);

const defaultProps = {
	icon: '✍',
	title: 'Unleserliche Wörter',
	body: 'Schreiben Sie [unleserlich].',
	// beispielInput is required for the → arrow to render (component: {#if beispielInput !== undefined})
	beispielInput: '[Original]',
	beispielOutput: '[unleserlich]'
};

describe('RichtlinienRuleCard', () => {
	it('renders an h3 with the title', async () => {
		render(RichtlinienRuleCard, { props: defaultProps });
		await expect
			.element(page.getByRole('heading', { level: 3 }))
			.toHaveTextContent('Unleserliche Wörter');
	});

	it('renders the body text', async () => {
		render(RichtlinienRuleCard, { props: defaultProps });
		await expect.element(page.getByText('Schreiben Sie [unleserlich].')).toBeInTheDocument();
	});

	it('renders icon in a span with aria-hidden="true"', async () => {
		render(RichtlinienRuleCard, { props: defaultProps });
		const iconSpan = document.querySelector('span[aria-hidden="true"]');
		expect(iconSpan).not.toBeNull();
		expect(iconSpan!.textContent).toContain('✍');
	});

	it('renders beispielOutput in monospace with → arrow', async () => {
		render(RichtlinienRuleCard, { props: defaultProps });
		// With both beispielInput and beispielOutput, the component renders two code elements:
		// [Input] → [Output]. querySelectorAll gets both; last one is the output.
		const codes = document.querySelectorAll('code, [class*="font-mono"]');
		expect(codes.length).toBeGreaterThanOrEqual(1);
		const outputCode = codes[codes.length - 1];
		expect(outputCode.textContent).toContain('[unleserlich]');
		await expect.element(page.getByText(/→/)).toBeInTheDocument();
	});

	it('does not render beispiel section when beispielOutput is absent', async () => {
		render(RichtlinienRuleCard, {
			props: { icon: '✍', title: 'Test', body: 'Body' }
		});
		expect(document.querySelector('code, [class*="font-mono"]')).toBeNull();
	});
});
