import { describe, it, expect, vi, beforeEach } from 'vitest';
import { Notification } from '@app/core/services/notification';

describe('Notification', () => {
  let service: Notification;

  beforeEach(() => {
    service = new Notification();
    vi.useFakeTimers();
  });

  afterEach(() => {
    vi.useRealTimers();
  });

  it('should create', () => {
    expect(service).toBeTruthy();
  });

  it('should start with empty notifications', () => {
    expect(service.notifications()).toEqual([]);
  });

  it('should add success notification', () => {
    service.success('Operation successful');

    expect(service.notifications()).toHaveLength(1);
    expect(service.notifications()[0].type).toBe('success');
    expect(service.notifications()[0].message).toBe('Operation successful');
  });

  it('should add error notification', () => {
    service.error('Something failed');

    expect(service.notifications()).toHaveLength(1);
    expect(service.notifications()[0].type).toBe('error');
    expect(service.notifications()[0].message).toBe('Something failed');
  });

  it('should add warning notification', () => {
    service.warning('Be careful');

    expect(service.notifications()).toHaveLength(1);
    expect(service.notifications()[0].type).toBe('warning');
  });

  it('should add info notification', () => {
    service.info('FYI');

    expect(service.notifications()).toHaveLength(1);
    expect(service.notifications()[0].type).toBe('info');
  });

  it('should dismiss notification by id', () => {
    service.success('Test 1');
    service.error('Test 2');

    expect(service.notifications()).toHaveLength(2);

    service.dismiss(service.notifications()[0].id);

    expect(service.notifications()).toHaveLength(1);
    expect(service.notifications()[0].message).toBe('Test 2');
  });

  it('should auto-dismiss after 5 seconds', () => {
    service.success('Auto dismiss');

    expect(service.notifications()).toHaveLength(1);

    vi.advanceTimersByTime(5000);

    expect(service.notifications()).toHaveLength(0);
  });

  it('should assign unique ids', () => {
    service.success('First');
    service.error('Second');
    service.warning('Third');

    const ids = service.notifications().map(n => n.id);
    const uniqueIds = new Set(ids);

    expect(uniqueIds.size).toBe(3);
  });
});