import { beforeEach, describe, expect, it, vi } from 'vitest';

const mocks = vi.hoisted(() => ({
  get: vi.fn(),
  fetchThumbnail: vi.fn(),
}));

vi.mock('$lib/server/database', () => ({
  getDatabase: vi.fn(async () => ({
    prepare: vi.fn(async () => ({ get: mocks.get })),
  })),
}));

vi.mock('$lib/server/ubisoft-news-client', () => ({
  fetchUbisoftNewsThumbnail: mocks.fetchThumbnail,
}));

import { GET } from './+server';

const articleId = '9890c398-0522-4e8c-8fdb-78de9c66deb6';
const sourceUrl = 'https://staticctf.ubisoft.com/news/cover.jpg';

describe('Ubisoft News image proxy', () => {
  beforeEach(() => {
    mocks.get.mockReset().mockResolvedValue({ thumbnail_url: sourceUrl });
    mocks.fetchThumbnail.mockReset().mockResolvedValue({
      body: new Uint8Array([1, 2, 3]),
      contentType: 'image/jpeg',
    });
  });

  it('serves a same-origin cached image and honors its ETag', async () => {
    const first = await GET({
      params: { id: articleId },
      request: new Request(`http://localhost/images/news/${articleId}`),
    } as never);
    expect(first.status).toBe(200);
    expect(first.headers.get('content-type')).toBe('image/jpeg');
    expect(first.headers.get('cross-origin-resource-policy')).toBe(
      'same-origin',
    );
    const etag = first.headers.get('etag');
    expect(etag).toBeTruthy();

    const second = await GET({
      params: { id: articleId },
      request: new Request(`http://localhost/images/news/${articleId}`, {
        headers: { 'if-none-match': String(etag) },
      }),
    } as never);
    expect(second.status).toBe(304);
    expect(mocks.fetchThumbnail).toHaveBeenCalledTimes(1);
  });
});