import { test, expect, type Page } from './fixtures';

// The collection detail page streams its manga/page grids: the header renders
// immediately while a grid skeleton stands in, then the real grid swaps in.

const collectionId = 'd1111111-1111-1111-1111-111111111111';

async function mockCommon(page: Page) {
    await page.route('**/api/v1/auth/config', (r) =>
        r.fulfill({
            status: 200,
            contentType: 'application/json',
            body: JSON.stringify({ self_register_enabled: true, private_mode: false })
        })
    );
    await page.route('**/api/v1/auth/me', (r) =>
        r.fulfill({
            status: 200,
            contentType: 'application/json',
            body: JSON.stringify({ user: { id: 'u1', username: 'reader', created_at: '2026-01-01T00:00:00Z', is_admin: false } })
        })
    );
    await page.route('**/api/v1/auth/me/preferences', (r) =>
        r.fulfill({ status: 200, contentType: 'application/json', body: '{}' })
    );
    await page.route(`**/api/v1/collections/${collectionId}`, (r) =>
        r.fulfill({
            status: 200,
            contentType: 'application/json',
            body: JSON.stringify({ id: collectionId, name: 'Favourites', description: null, manga_count: 1 })
        })
    );
    await page.route(`**/api/v1/collections/${collectionId}/pages*`, (r) =>
        r.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify({ items: [], page: { limit: 200, offset: 0, total: 0 } }) })
    );
}

test('streams a grid skeleton on the collection detail then the manga grid', async ({ page }) => {
    await mockCommon(page);

    let release: () => void = () => {};
    const gate = new Promise<void>((resolve) => {
        release = resolve;
    });
    await page.route(`**/api/v1/collections/${collectionId}/mangas*`, async (route) => {
        await gate;
        await route.fulfill({
            status: 200,
            contentType: 'application/json',
            body: JSON.stringify({
                items: [
                    { id: 'm1', title: 'Berserk', status: 'ongoing', alt_titles: [], description: null, cover_image_path: null, created_at: '2026-01-01T00:00:00Z', updated_at: '2026-01-01T00:00:00Z' }
                ],
                page: { limit: 200, offset: 0, total: 1 }
            })
        });
    });

    await page.goto(`/collections/${collectionId}`);
    await expect(page.getByRole('heading', { name: 'Favourites' })).toBeVisible();
    await expect(page.getByTestId('manga-grid-skeleton')).toBeVisible();
    await expect(page.getByTestId('collection-manga-list')).toHaveCount(0);

    release();
    await expect(page.getByTestId('collection-manga-list')).toContainText('Berserk');
    await expect(page.getByTestId('manga-grid-skeleton')).toHaveCount(0);
});
