import { configureStore } from '@reduxjs/toolkit';
import { ShiftPatternSlice, fetchShiftPatterns } from '../ShiftPatternSlice';

jest.mock('@/services/api/api', () => ({ apiGet: jest.fn(), apiPost: jest.fn(), apiPut: jest.fn(), apiDelete: jest.fn() }));
jest.mock('antd', () => ({ message: { success: jest.fn(), error: jest.fn(), warning: jest.fn() } }));
jest.mock('@/utilities/Helpers', () => ({ default: { handleServerError: jest.fn((e) => e?.message || 'Error') } }));

const createStore = () => configureStore({ reducer: { shiftPatterns: ShiftPatternSlice.reducer } });

describe('ShiftPatternSlice', () => {
  it('has correct initial state', () => {
    const state = createStore().getState().shiftPatterns;
    expect(state.shiftPatterns).toEqual([]);
    expect(state.loading).toBe(false);
    expect(state.error).toBeNull();
  });

  it('sets loading on fetchShiftPatterns.pending', () => {
    const store = createStore();
    store.dispatch(fetchShiftPatterns.pending('req'));
    expect(store.getState().shiftPatterns.loading).toBe(true);
  });

  it('populates data on fetchShiftPatterns.fulfilled', () => {
    const store = createStore();
    const data = [{ id: '1', name: '4-2 Pattern' }] as any;
    store.dispatch(fetchShiftPatterns.fulfilled(data, 'req'));
    expect(store.getState().shiftPatterns.shiftPatterns).toEqual(data);
    expect(store.getState().shiftPatterns.loading).toBe(false);
  });
});