// @vitest-environment jsdom
import {afterEach, describe, expect, it, vi} from 'vitest';
import {cleanup, screen} from '@testing-library/react';
import WhatsNewPage from './WhatsNewPage.jsx';
import {fetchRoutes, json} from '../test/fetchRoutes.js';
import {renderWithProviders} from '../test/renderWithProviders.jsx';

vi.mock('react-i18next', () => import('../test/i18n-mock.js'));

const entry = (id, title) => ({id, titleEn: title, titleDe: null, textEn: `${title} text`, textDe: null,
    publishedAt: '2026-10-01T10:00:00Z', seen: false});
const putCalls = () => fetch.mock.calls.filter(([, init]) => init?.method === 'PUT');

describe('WhatsNewPage', () => {
    afterEach(() => {
        cleanup();
        vi.clearAllMocks();
    });

    it('lists the entries in the given order and marks them seen once', async () => {
        fetchRoutes({'GET /api/news': json(200, {results: [entry(2, 'Second'), entry(1, 'First')]}),
            'PUT /api/news/seen': json(204)});
        renderWithProviders(<WhatsNewPage/>);

        await screen.findByText('Second');

        expect(screen.getAllByRole('heading', {level: 3}).map((heading) => heading.textContent)).toEqual(['Second', 'First']);
        expect(putCalls()).toHaveLength(1);
    });

    it('says so when there are no entries', async () => {
        fetchRoutes({'GET /api/news': json(200, {results: []}), 'PUT /api/news/seen': json(204)});
        renderWithProviders(<WhatsNewPage/>);

        expect(await screen.findByText('NEWS.EMPTY')).toBeTruthy();
    });

    it('shows an error and marks nothing when the load fails', async () => {
        fetchRoutes({'GET /api/news': json(500, {})});
        renderWithProviders(<WhatsNewPage/>);

        expect(await screen.findByText('NEWS.LOAD_ERROR')).toBeTruthy();
        expect(putCalls()).toEqual([]);
    });
});