<?php

namespace App\Actions;

use App\Data\AddToCartDTO;
use App\Data\CartDTO;
use App\Enums\CartStatus;
use App\Models\Product;
use App\Models\User;

final readonly class AddProductToCartAction
{
    /**
     * Execute the action.
     */
    public function execute(AddToCartDTO $cartData, User $user)
    {
        $cart = $user->carts()->active()->firstOrCreate([
            'status' => CartStatus::Active,
        ]);

        $price = Product::query()->whereId($cartData->productId)->value('actual_price');

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

        if ($productInCart) {
            $newQuantity = $productInCart->pivot->quantity + $cartData->quantity;

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

        } else {
            $cart->products()->attach($cartData->productId, [
                'quantity' => $cartData->quantity,
                'price' => $price,
            ]);
        }

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

    }
}