import { configureStore } from '@reduxjs/toolkit';
import TaxBracketsSlice, {
  fetchTaxBrackets,
  createTaxBracket,
  updateTaxBracket,
  deleteTaxBracket,
} from '../TaxBracketsSlice';

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

const { apiGet, apiPost, apiPut, apiDelete } = require('@/services/api/api');

const createTestStore = () =>
  configureStore({ reducer: { taxBrackets: TaxBracketsSlice.reducer } });

const mockBracket = { id: '1', lower_limit: 0, upper_limit: 5000, rate: 0, sort_order: 1 };

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

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

  describe('fetchTaxBrackets', () => {
    it('populates brackets on fulfilled', async () => {
      apiGet.mockResolvedValue({ data: [mockBracket] });
      const store = createTestStore();
      await store.dispatch(fetchTaxBrackets());
      expect(store.getState().taxBrackets.taxBrackets).toEqual([mockBracket]);
    });
  });

  describe('createTaxBracket', () => {
    it('adds and sorts brackets on fulfilled', async () => {
      const newBracket = { ...mockBracket, id: '2', sort_order: 0 };
      apiPost.mockResolvedValue({ data: { data: newBracket } });
      const store = createTestStore();
      store.dispatch({ type: fetchTaxBrackets.fulfilled.type, payload: [mockBracket] });
      await store.dispatch(createTaxBracket({ lower_limit: 0 } as any));
      const brackets = store.getState().taxBrackets.taxBrackets;
      expect(brackets[0].sort_order).toBeLessThanOrEqual(brackets[1].sort_order);
    });
  });

  describe('updateTaxBracket', () => {
    it('updates bracket in list on fulfilled', async () => {
      const updated = { ...mockBracket, rate: 5 };
      apiPut.mockResolvedValue({ data: { data: updated } });
      const store = createTestStore();
      store.dispatch({ type: fetchTaxBrackets.fulfilled.type, payload: [mockBracket] });
      await store.dispatch(updateTaxBracket({ id: '1', rate: 5 } as any));
      expect(store.getState().taxBrackets.taxBrackets[0].rate).toBe(5);
    });
  });

  describe('deleteTaxBracket', () => {
    it('removes bracket from list on fulfilled', async () => {
      apiDelete.mockResolvedValue({ data: { id: '1', message: 'Deleted' } });
      const store = createTestStore();
      store.dispatch({ type: fetchTaxBrackets.fulfilled.type, payload: [mockBracket] });
      await store.dispatch(deleteTaxBracket('1'));
      expect(store.getState().taxBrackets.taxBrackets).toEqual([]);
    });
  });
});