import { mkdir, writeFile } from 'node:fs/promises';
import { join } from 'node:path';
import { expect, test } from '@playwright/test';

test('an artist directory uploads each album as a separate batch with a shared portrait', async ({ page }, info) => {
  const root = info.outputPath('творожный бизнес');
  const albums = ['(2026) творог грехов - творожный бизнес', '(2025) молчанка - творожный бизнес'];
  for (const album of albums) {
    await mkdir(join(root, album), { recursive: true });
    await writeFile(join(root, album, 'song.flac'), Buffer.alloc(128));
  }
  const portrait = Buffer.from('portrait');
  await writeFile(join(root, 'artist.jpg'), portrait);
  await writeFile(join(root, albums[0]!, 'cover.jpg'), Buffer.from('album cover'));
  type Batch = { artist_image_base64?: string; cover_base64?: string; files: { client_id: string; rel_path: string }[] };
  const batches: Batch[] = [];
  await page.exposeFunction('recordArtistBatch', (batch: Batch) => { batches.push(batch); });
  await page.addInitScript(() => localStorage.setItem('pipu.locale', 'ru'));
  await page.goto('/login');
  await page.getByLabel('Логин', { exact: true }).fill('mobile-admin');
  await page.getByRole('textbox', { name: 'Пароль', exact: true }).fill('mobile-admin-password');
  await page.getByRole('button', { name: 'Войти', exact: true }).click();
  await expect(page.getByRole('button', { name: 'Меню профиля' })).toBeVisible();
  await page.evaluate(() => {
    const original = window.fetch;
    window.fetch = async (input, init) => {
      const req = new Request(input, init);
      const path = new URL(req.url).pathname;
      const json = (data: unknown) => new Response(JSON.stringify(data), { headers: { 'Content-Type': 'application/json' } });
      if (path === '/api/v1/uploads/precheck') {
        const body = await req.json();
        return json({ files: body.files.map((f: { client_id: string }) => ({ client_id: f.client_id, result: 'accepted' })) });
      }
      if (path === '/api/v1/uploads' && req.method === 'POST') {
        const body = await req.json();
        await (window as unknown as { recordArtistBatch: (body: unknown) => Promise<void> }).recordArtistBatch(body);
        return json({ batch_id: crypto.randomUUID(), files: body.files.map((f: { client_id: string }) => ({ client_id: f.client_id, upload_file_id: f.client_id, tus_url: `/api/v1/uploads/files/${f.client_id}` })) });
      }
      return original(input, init);
    };
    history.pushState({}, '', '/uploads/new');
    window.dispatchEvent(new PopStateEvent('popstate'));
  });
  await page.route('**/api/v1/uploads/files/*', async (route) => {
    await route.fulfill({ status: route.request().method() === 'HEAD' ? 200 : 204,
      headers: { 'Upload-Length': '128', 'Upload-Offset': route.request().method() === 'HEAD' ? '0' : '128', 'Tus-Resumable': '1.0.0' } });
  });
  await page.locator('input[webkitdirectory]').setInputFiles(root);
  const send = page.getByRole('button', { name: /^Отправить/ });
  await expect(send).toBeEnabled();
  await expect(page.getByText(/Пропущен/)).toHaveCount(0);
  await send.click();
  await expect(page.getByText(/Готово: 2 файла/)).toBeVisible();
  expect(batches).toHaveLength(2);
  expect(batches.map((batch) => batch.files[0]!.rel_path).sort()).toEqual(albums.map((album) => `творожный бизнес/${album}/song.flac`).sort());
  for (const batch of batches) {
    expect(batch.files).toHaveLength(1);
    expect(batch.artist_image_base64).toBe(portrait.toString('base64'));
  }
  expect(batches.find((batch) => batch.files[0]!.rel_path.includes(albums[0]!))!.cover_base64).toBe(Buffer.from('album cover').toString('base64'));
  expect(batches.find((batch) => batch.files[0]!.rel_path.includes(albums[1]!))!.cover_base64).toBeUndefined();
});