import { beforeEach, expect, it, vi } from 'vitest';
import { GET } from '../../src/routes/api/leaderboard/+server.js';
import { load } from '../../src/routes/leaderboard/+page.server.js';
vi.mock('../../src/routes/api/leaderboard/+server.js', () => ({ GET: vi.fn() }));
beforeEach(() => { vi.clearAllMocks(); });
it('requests the same 25-player page on initial load and preserves filters without mutating the page URL', async () => {
    vi.mocked(GET).mockResolvedValueOnce(new Response(JSON.stringify({ entries: [], limit: 25, offset: 25 })));
    const url = new URL('http://localhost/leaderboard?game=t5&map=theater&players=2&metric=kills&q=123&offset=25&limit=100');
    const original = url.href;
    const data = await load({ url });
    const requested = vi.mocked(GET).mock.calls[0][0].url;
    expect(requested.searchParams.get('limit')).toBe('25');
    for (const key of ['game', 'map', 'players', 'metric', 'q', 'offset']) expect(requested.searchParams.get(key)).toBe(url.searchParams.get(key));
    expect(url.href).toBe(original);
    expect(data.leaderboard.limit).toBe(25);
});

it.each(['', '?game=t6&players=2&metric=kills&q=Cherry&offset=25'])('defaults to All maps without redirecting or changing other filters: %s', async query => {
    vi.mocked(GET).mockResolvedValueOnce(new Response(JSON.stringify({ entries: [], maps: [{ key: 't6:town' }], limit: 25 })));
    const url = new URL(`http://localhost/leaderboard${query}`);
    const original = url.href;
    expect(await load({ url })).toMatchObject({ leaderboard: { entries: [], limit: 25 } });
    const requested = vi.mocked(GET).mock.calls[0][0].url;
    expect(requested.searchParams.has('map')).toBe(false);
    for (const key of ['game', 'players', 'metric', 'q', 'offset']) expect(requested.searchParams.get(key)).toBe(url.searchParams.get(key));
    expect(url.href).toBe(original);
});

it('honors explicit All maps and handles an empty recorded-map catalog without redirecting', async () => {
    vi.mocked(GET).mockResolvedValue(new Response(JSON.stringify({ entries: [], maps: [], limit: 25 })));
    await load({ url: new URL('http://localhost/leaderboard?map=&players=3') });
    expect(vi.mocked(GET).mock.calls[0][0].url.searchParams.get('map')).toBe('');
    vi.mocked(GET).mockResolvedValueOnce(new Response(JSON.stringify({ entries: [], maps: [], limit: 25 })));
    expect(await load({ url: new URL('http://localhost/leaderboard') })).toMatchObject({ leaderboard: { entries: [], maps: [] } });
});