import { act, renderHook } from '@testing-library/react-native';
import { useAutoConnect } from '../hooks/useAutoConnect';
import * as api from '../services/lmStudioApi';
import { useAppStore } from '../store/useAppStore';

jest.mock('../services/lmStudioApi');

const mockApi = api as jest.Mocked<typeof api>;

beforeEach(() => {
    jest.resetAllMocks();
    useAppStore.setState(useAppStore.getInitialState(), true);
});

describe('useAutoConnect', () => {
    it('loads the models once on mount and marks the server connected', async () => {
        mockApi.getModels.mockResolvedValue([{ id: 'm1', object: 'model', owned_by: 'x' }]);
        renderHook(() => useAutoConnect());

        await act(async () => {});
        expect(mockApi.getModels).toHaveBeenCalledTimes(1);
        expect(useAppStore.getState().isConnected).toBe(true);
        expect(useAppStore.getState().activeModelId).toBe('m1');
    });

    it('leaves the app offline when the server does not answer', async () => {
        mockApi.getModels.mockRejectedValue(new Error('down'));
        renderHook(() => useAutoConnect());

        await act(async () => {});
        expect(useAppStore.getState().isConnected).toBe(false);
    });

    it('does not check again on re-render', async () => {
        mockApi.getModels.mockResolvedValue([]);
        const { rerender } = renderHook(() => useAutoConnect());
        await act(async () => {});
        rerender({});
        await act(async () => {});
        expect(mockApi.getModels).toHaveBeenCalledTimes(1);
    });
});