import { mockAppRoot } from '@rocket.chat/mock-providers';
import { render, screen } from '@testing-library/react';
import userEvent from '@testing-library/user-event';

import SearchAnswerPanel, { type SearchAnswerPanelProps } from './SearchAnswerPanel';

import '@testing-library/jest-dom';

const defaultProps: SearchAnswerPanelProps = {
	isLoading: false,
	disabled: false,
	emptyReason: 'No sources are available.',
	onGenerate: jest.fn(),
};

const renderPanel = (props: Partial<SearchAnswerPanelProps> = {}) =>
	render(<SearchAnswerPanel {...defaultProps} {...props} />, {
		wrapper: mockAppRoot()
			.withTranslations('en', 'core', {
				Search_AI_answer: 'AI answer',
				Search_AI_answer_ready: 'Generate an answer from these sources.',
				Search_AI_answer_provider: 'Generated by {{provider}} using {{model}}',
				Search_AI_answer_error: 'The answer could not be generated.',
				Generate: 'Generate',
				Regenerate: 'Regenerate',
				Loading: 'Loading',
			})
			.build(),
	});

describe('SearchAnswerPanel', () => {
	it('offers to generate an answer when sources are available', async () => {
		const user = userEvent.setup();
		const onGenerate = jest.fn();
		renderPanel({ onGenerate });

		expect(screen.getByText('Generate an answer from these sources.')).toBeInTheDocument();
		await user.click(screen.getByRole('button', { name: 'Generate' }));
		expect(onGenerate).toHaveBeenCalledTimes(1);
	});

	it('renders the disabled reason when an answer cannot be generated', () => {
		renderPanel({ disabled: true, emptyReason: 'No related messages were found.' });

		expect(screen.getByText('No related messages were found.')).toBeInTheDocument();
		expect(screen.getByRole('button', { name: 'Generate' })).toBeDisabled();
	});

	it('renders a loading state and disables generation', () => {
		renderPanel({ isLoading: true });

		expect(screen.getByLabelText('Loading')).toHaveAttribute('aria-busy', 'true');
		expect(screen.getByRole('button', { name: 'Loading' })).toBeDisabled();
	});

	it('renders markdown and provider metadata for a generated answer', () => {
		renderPanel({
			answer: '**Deployment** completed successfully.',
			provider: { name: 'OpenAI compatible', model: 'example-model' },
		});

		expect(screen.getByText('Deployment').tagName).toBe('STRONG');
		expect(screen.getByText('Generated by OpenAI compatible using example-model')).toBeInTheDocument();
		expect(screen.getByRole('button', { name: 'Regenerate' })).toBeEnabled();
	});

	it('renders a generation error instead of the answer content', () => {
		renderPanel({ error: new Error('request failed') });

		expect(screen.getByText('The answer could not be generated.')).toBeInTheDocument();
		expect(screen.queryByText('Generate an answer from these sources.')).not.toBeInTheDocument();
	});
});