import { describe, it, expect } from 'vitest';
import reducer, {
  setSession,
  clearSession,
  setStatus,
  selectIsAuthenticated,
  selectAccessToken,
  selectUserInfo,
  selectAuthStatus,
} from './authSlice';
import type { UserInfo } from '../../api/auth';

const userInfo: UserInfo = {
  userId: 1,
  username: 'alice',
  userType: 'NORMAL',
  language: 'zh-CN',
  companyCode: 'HQ',
};

describe('authSlice', () => {
  it('setSession writes accessToken and userInfo and status=success', () => {
    const next = reducer(undefined, setSession({ accessToken: 'jwt', userInfo }));
    expect(next.accessToken).toBe('jwt');
    expect(next.userInfo).toEqual(userInfo);
    expect(next.status).toBe('success');
  });

  it('clearSession resets to null and status=idle', () => {
    const initial = reducer(undefined, setSession({ accessToken: 'jwt', userInfo }));
    const cleared = reducer(initial, clearSession());
    expect(cleared.accessToken).toBeNull();
    expect(cleared.userInfo).toBeNull();
    expect(cleared.status).toBe('idle');
  });

  it('setStatus updates status', () => {
    const next = reducer(undefined, setStatus('submitting'));
    expect(next.status).toBe('submitting');
  });

  it('selectIsAuthenticated true when token present', () => {
    const state = { auth: reducer(undefined, setSession({ accessToken: 'jwt', userInfo })) };
    expect(selectIsAuthenticated(state)).toBe(true);
    expect(selectAccessToken(state)).toBe('jwt');
    expect(selectUserInfo(state)).toEqual(userInfo);
    expect(selectAuthStatus(state)).toBe('success');
  });

  it('selectIsAuthenticated false initially', () => {
    const state = { auth: reducer(undefined, { type: '@@INIT' } as any) };
    expect(selectIsAuthenticated(state)).toBe(false);
  });
});