gistfile1.java

package com.example.crud.controllers;
import com.example.crud.domain.product.Product;
import com.example.crud.domain.product.ProductRepository;
import com.example.crud.domain.product.RequestProductDTO;
import jakarta.persistence.EntityNotFoundException;
import jakarta.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.*;



import java.util.Optional;

import static org.springframework.data.jpa.domain.AbstractPersistable_.id;

@RestController
@RequestMapping("/product")

public class ProductController {
    @Autowired
    private ProductRepository repository;
    @GetMapping
    public ResponseEntity getAllProducts(){

        var allProducts = repository.findAll();

        return ResponseEntity.ok(allProducts);
    }

    @PostMapping
    public ResponseEntity register(@RequestBody @Valid RequestProductDTO data) {
        Product newProduct = new Product(data);
        repository.save(newProduct);
        return ResponseEntity.ok().build();
    }

    @PutMapping
    @Transactional
    public ResponseEntity updateProduct (@RequestBody @Valid RequestProductDTO data) {
        Optional<Product> optionalProduct = repository.findById(data.id());
        if (optionalProduct.isPresent()) {
             Product product = optionalProduct.get();
             product.setName(data.name());
             product.setPrice_in_cents(data.price_in_cents());
             return ResponseEntity.ok(product);
        } else {
            return ResponseEntity.notFound().build();
        }

        @DeleteMapping(value = "/{id}")
        public ResponseEntity deleteProduct(@PathVariable String id){
            Optional<Product> optionalProduct = repository.findById(id);
            if (optionalProduct.isPresent()) {
                Product product = optionalProduct.get();
                product.setActive(false);
                return ResponseEntity.noContent().build();
            } else {
                throw new EntityNotFoundException();
            }
        }
    }
}