ClearBowl/api/app/Http/Controllers/ProductsController.php

<?php

namespace App\Http\Controllers;

use App\Helpers\NutritionCalculator;
use App\Http\Requests\AddProductRequest;
use App\Repositories\ProductsRepositoryInterface;
use Illuminate\Http\Request;

class ProductsController extends Controller
{
    private $productsRepository;

    public function __construct(ProductsRepositoryInterface $productsRepository)
    {
        $this->productsRepository = $productsRepository;
    }

    public function add(AddProductRequest $request)
    {
        $product = $this->productsRepository->create($request->all());

        return response()->json(['success' => true, 'data' => ['product' => $product]], 200);
    }

    public function index(Request $request)
    {
        $filters = $this->getFilters($request);
        $products = $this->productsRepository->paginate($filters);

        return response()->json(['success' => true, 'data' => ['products' => $products]], 200);
    }

    public function calculate(Request $request)
    {
        $products = $this->productsRepository->fillProductsInfo($request->input('products'));
        $nutrition = NutritionCalculator::calculateNutritionForProducts($products);

        return response()->json(['success' => true, 'data' => ['nutrition' => $nutrition]]);
    }
}