import { Test, TestingModule } from '@nestjs/testing';
import { PetsController } from './pets.controller';
import { PetsService } from './pets.service';

describe('PetsController', () => {
  let controller: PetsController;
  let service: PetsService;

  const mockPetsService = {
    create: jest.fn().mockResolvedValue({ id: 'pet-id', name: 'Buddy' }),
    findAllByUser: jest
      .fn()
      .mockResolvedValue({ data: [{ id: 'pet-id', name: 'Buddy' }] }),
    findOne: jest.fn().mockResolvedValue({ id: 'pet-id', name: 'Buddy' }),
    update: jest.fn().mockResolvedValue({ id: 'pet-id', name: 'Buddy New' }),
    remove: jest.fn().mockResolvedValue({ success: true }),
  };

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      controllers: [PetsController],
      providers: [{ provide: PetsService, useValue: mockPetsService }],
    }).compile();

    controller = module.get<PetsController>(PetsController);
    service = module.get<PetsService>(PetsService);
  });

  afterEach(() => {
    jest.clearAllMocks();
  });

  it('should be defined', () => {
    expect(controller).toBeDefined();
  });

  it('should create pet', async () => {
    const req = { user: { id: 'user-id' } };
    const dto = { name: 'Buddy', type: 'Dog' };
    const result = await controller.create(req, dto);
    expect(service.create).toHaveBeenCalledWith('user-id', dto);
    expect(result.id).toBe('pet-id');
  });

  it('should findAll pets', async () => {
    const req = { user: { id: 'user-id' } };
    const result = await controller.findAll(req, {});
    expect(service.findAllByUser).toHaveBeenCalledWith('user-id', {});
    expect(result.data).toHaveLength(1);
  });

  it('should findOne pet', async () => {
    const req = { user: { id: 'user-id' } };
    const result = await controller.findOne(req, 'pet-id');
    expect(service.findOne).toHaveBeenCalledWith('pet-id', 'user-id');
    expect(result.id).toBe('pet-id');
  });

  it('should update pet', async () => {
    const req = { user: { id: 'user-id' } };
    const dto = { name: 'Buddy New' };
    const result = await controller.update(req, 'pet-id', dto);
    expect(service.update).toHaveBeenCalledWith('pet-id', 'user-id', dto);
    expect(result.name).toBe('Buddy New');
  });

  it('should remove pet', async () => {
    const req = { user: { id: 'user-id' } };
    const result = await controller.remove(req, 'pet-id');
    expect(service.remove).toHaveBeenCalledWith('pet-id', 'user-id');
    expect(result).toBeDefined();
  });
});