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

// The bookmarks list pages the results: the first 50 load with the page, and a
// "Load more" button fetches the next page (offset-based) and appends it, so
// bookmarks past the first page are reachable rather than silently truncated.

function bookmark(i: number) {
    return {
        id: `bm-${i}`,
        manga_id: `m-${i}`,
        manga_title: `Manga ${i}`,
        manga_cover_image_path: null,
        chapter_id: null,
        chapter_number: null,
        page: null,
        created_at: '2026-01-01T00:00:00Z'
    };
}

async function authed(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/files/**', (r) => r.fulfill({ status: 200, body: '' }));
}

test('bookmarks list loads more pages on demand', async ({ page }) => {
    await authed(page);
    // total = 60: first page 50 (offset 0), second page 10 (offset 50).
    await page.route('**/api/v1/me/bookmarks*', (r) => {
        const url = new URL(r.request().url());
        const offset = Number(url.searchParams.get('offset') ?? '0');
        const items =
            offset === 0
                ? Array.from({ length: 50 }, (_, i) => bookmark(i))
                : Array.from({ length: 10 }, (_, i) => bookmark(50 + i));
        return r.fulfill({
            status: 200,
            contentType: 'application/json',
            body: JSON.stringify({ items, page: { limit: 50, offset, total: 60 } })
        });
    });

    await page.goto('/bookmarks');

    // First page rendered; more remain so the button shows.
    await expect(page.getByText('Manga 0')).toBeVisible();
    await expect(page.getByText('Manga 49')).toBeVisible();
    await expect(page.getByText('Manga 50')).toHaveCount(0);
    const loadMore = page.getByTestId('load-more');
    await expect(loadMore).toBeVisible();

    // Load the rest; the button disappears once everything is shown.
    await loadMore.click();
    await expect(page.getByText('Manga 59')).toBeVisible();
    await expect(loadMore).toHaveCount(0);
});
