<?php

namespace App\Actions;

use App\Data\AddToCartDTO;
use App\Data\CartDTO;
use App\Models\User;
use InvalidArgumentException;

final readonly class UpdateProductInCartAction
{
    /**
     * Execute the action.
     *
     * @throws InvalidArgumentException
     */
    public function execute(AddToCartDTO $cartData, User $user)
    {
        $cart = $user->carts()->active()->sole();

        $productInCart = $cart->products()->find($cartData->productId);

        throw_if($productInCart === null, new InvalidArgumentException('Product not found'));

        $cart->products()->updateExistingPivot($cartData->productId, [
            'quantity' => $cartData->quantity,
        ]);

        return CartDTO::fromModel($cart->load(['products' => function ($query) {
            $query->withPivot('quantity', 'price');
        }]));

    }
}