import { configureStore } from '@reduxjs/toolkit';
import PensionReportGroupsSlice, {
  fetchPensionReportGroups,
} from '../PensionReportGroupsSlice';

jest.mock('@/services/api/api', () => ({
  apiGet: jest.fn(),
}));

jest.mock('antd', () => ({
  message: { success: jest.fn(), error: jest.fn(), warning: jest.fn() },
}));

jest.mock('@/utilities/Helpers', () => {
  const mockHelpers = { handleServerError: jest.fn((e: any) => e?.message || 'Error') };
  return { __esModule: true, default: mockHelpers };
});

const { apiGet } = require('@/services/api/api');

const createTestStore = () =>
  configureStore({ reducer: { pensionReportGroups: PensionReportGroupsSlice.reducer } });

const mockGroup = { id: '1', code: 'TIER1', label: 'Tier 1', country_code: 'GH', sort_order: 1 };

describe('PensionReportGroupsSlice', () => {
  beforeEach(() => jest.clearAllMocks());

  it('has correct initial state', () => {
    const store = createTestStore();
    const state = store.getState().pensionReportGroups;
    expect(state.reportGroups).toEqual([]);
    expect(state.loading).toBe(false);
    expect(state.error).toBeNull();
  });

  describe('fetchPensionReportGroups', () => {
    it('populates report groups on fulfilled', async () => {
      apiGet.mockResolvedValue({ data: { data: [mockGroup] } });
      const store = createTestStore();
      await store.dispatch(fetchPensionReportGroups());
      expect(store.getState().pensionReportGroups.reportGroups).toEqual([mockGroup]);
      expect(store.getState().pensionReportGroups.loading).toBe(false);
    });

    it('sets error on rejected', () => {
      const store = createTestStore();
      store.dispatch({
        type: fetchPensionReportGroups.rejected.type,
        payload: { message: 'Server error' },
      });
      expect(store.getState().pensionReportGroups.error).toBeTruthy();
    });
  });
});