import { JSDOM } from 'jsdom';
import { collectAmazonNextPageUrl } from '../src/page-worker/web-injectors/amazon-search-pagination';

const test = async (name: string, html: string, expected: string | null) => {
  const dom = new JSDOM(html, { url: 'https://www.amazon.com/s?k=security+camera&page=1' });
  const previousDocument = globalThis.document;
  const previousWindow = globalThis.window;
  Object.assign(globalThis, { document: dom.window.document, window: dom.window });
  try {
    const actual = await collectAmazonNextPageUrl();
    if (actual !== expected) throw new Error(`${name}: expected ${expected}, received ${actual}`);
  } finally {
    Object.assign(globalThis, { document: previousDocument, window: previousWindow });
    dom.window.close();
  }
};

const main = async () => {
  await test(
    'active next page',
    '<a class="s-pagination-next" href="/s?k=security+camera&page=2">Next</a>',
    'https://www.amazon.com/s?k=security+camera&page=2',
  );
  await test(
    'disabled next page',
    '<span class="s-pagination-next s-pagination-disabled">Next</span>',
    null,
  );
  await test('missing next page', '<main>No pagination</main>', null);
  console.log('Amazon search pagination tests passed.');
};

void main();