import { configureStore } from '@reduxjs/toolkit';
import ResultsSlice, { clearSelectedResult, clearStats } from '../ResultsSlice';

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', () => ({ default: { handleServerError: jest.fn((e) => e?.message || 'Error') } }));

const createStore = () => configureStore({ reducer: { r: ResultsSlice.reducer } });

describe('ResultsSlice', () => {
  it('has correct initial state', () => {
    const store = createStore();
    const state = store.getState().r;
    expect(state.results).toEqual([]);
    expect(state.selectedResult).toBeNull();
    expect(state.stats).toBeNull();
    expect(state.nonCompleters).toEqual([]);
    expect(state.questionAnalytics).toEqual([]);
    expect(state.meta).toBeNull();
    expect(state.loading).toBe(false);
    expect(state.error).toBeNull();
  });

  it('sets loading on fetch pending', () => {
    const store = createStore();
    store.dispatch({ type: 'assessmentResults/fetch/pending' });
    expect(store.getState().r.loading).toBe(true);
  });

  it('populates results and meta on fetch fulfilled', () => {
    const store = createStore();
    const meta = { current_page: 1, last_page: 1, per_page: 15, total: 1 };
    store.dispatch({ type: 'assessmentResults/fetch/fulfilled', payload: { data: [{ id: '1' }], meta } });
    expect(store.getState().r.results).toEqual([{ id: '1' }]);
    expect(store.getState().r.meta).toEqual(meta);
  });

  it('sets selectedResult on fetchOne fulfilled', () => {
    const store = createStore();
    store.dispatch({ type: 'assessmentResults/fetchOne/fulfilled', payload: { id: '1', score: 85 } });
    expect(store.getState().r.selectedResult).toEqual({ id: '1', score: 85 });
  });

  it('sets stats on fetchStats fulfilled', () => {
    const store = createStore();
    store.dispatch({ type: 'assessmentResults/fetchStats/fulfilled', payload: { avgScore: 75 } });
    expect(store.getState().r.stats).toEqual({ avgScore: 75 });
  });

  it('sets nonCompleters on fetchNonCompleters fulfilled', () => {
    const store = createStore();
    store.dispatch({ type: 'assessmentResults/fetchNonCompleters/fulfilled', payload: [{ id: 'n1' }] });
    expect(store.getState().r.nonCompleters).toEqual([{ id: 'n1' }]);
  });

  it('sets questionAnalytics on fetchQuestionAnalytics fulfilled', () => {
    const store = createStore();
    store.dispatch({ type: 'assessmentResults/fetchQuestionAnalytics/fulfilled', payload: [{ id: 'qa1' }] });
    expect(store.getState().r.questionAnalytics).toEqual([{ id: 'qa1' }]);
  });

  it('clears selectedResult via clearSelectedResult', () => {
    const store = createStore();
    store.dispatch({ type: 'assessmentResults/fetchOne/fulfilled', payload: { id: '1' } });
    store.dispatch(clearSelectedResult());
    expect(store.getState().r.selectedResult).toBeNull();
  });

  it('clears stats, nonCompleters, and questionAnalytics via clearStats', () => {
    const store = createStore();
    store.dispatch({ type: 'assessmentResults/fetchStats/fulfilled', payload: { avgScore: 75 } });
    store.dispatch({ type: 'assessmentResults/fetchNonCompleters/fulfilled', payload: [{ id: 'n1' }] });
    store.dispatch({ type: 'assessmentResults/fetchQuestionAnalytics/fulfilled', payload: [{ id: 'qa1' }] });
    store.dispatch(clearStats());
    expect(store.getState().r.stats).toBeNull();
    expect(store.getState().r.nonCompleters).toEqual([]);
    expect(store.getState().r.questionAnalytics).toEqual([]);
  });
});