package br.ufc.mandacaru5.service;

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import br.ufc.mandacaru5.dto.ProductDTO;
import br.ufc.mandacaru5.model.Product;
import br.ufc.mandacaru5.repository.ProductRepository;

@Service
public class ProductService {

    @Autowired
    ProductRepository productRepository;

    public void save(int id, ProductDTO entity) {
        Product product = new Product();

        if (id != 0) {
            product = findProduct(id);
        }

        product.setName(entity.getName());
        product.setPrice(entity.getPrice());
        productRepository.save(product);
    }

    public void delete(int id) {
        Product product = findProduct(id);
        productRepository.delete(product);
    }

    public ProductDTO find(int id) {
        if (id < 1) {
            return null;
        }

        Optional<Product> product = productRepository.findById(id);

        if (product.isPresent()) {
            ProductDTO dto = new ProductDTO();
            dto.setName(product.get().getName());
            dto.setPrice(product.get().getPrice());
            return dto;
        }

        return null;
    }

    private Product findProduct(int id) {
        if (id < 1) {
            return null;
        }

        Optional<Product> product = productRepository.findById(id);

        if (product.isPresent()) {
            return product.get();
        }

        return null;
    }

    public List<ProductDTO> findAll() {
        List<Product> list = productRepository.findAll();
        List<ProductDTO> listDTO = new ArrayList<ProductDTO>();

        for (Product product : list) {
            ProductDTO dto = new ProductDTO();
            dto.setName(product.getName());
            dto.setPrice(product.getPrice());
            listDTO.add(dto);
        }

        return listDTO;
    }

    public ProductDTO findByName(String str) {
        if (str.length() < 3) {
            return null;
        }

        Product product = productRepository.findFirstByName(str);

        if (product != null) {
            ProductDTO dto = new ProductDTO();
            dto.setName(product.getName());
            dto.setPrice(product.getPrice());
            return dto;
        }

        return null;
    }
}