cart controller

<?php

namespace App\Http\Controllers\Api\Web;

use App\Http\Controllers\Controller;
use App\Http\Resources\CartResource;
use App\Models\Cart;
use Illuminate\Http\Request;

class CartController extends Controller
{
    /**
     * __construct
     * 
     * @return void 
     */
    public function __construct()
    {
        $this->middleware('auth:api_customer');
    }

    /**
     * Display a listing of the resource
     * 
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $carts = Cart::with('product')
                ->where('customer_id', auth()->guard('api_customer')->user()->id)
                ->latest()
                ->get();

        //return with Api Resource
        return new CartResource(true, 'List Data Carts : ' .auth()->guard('api_customer')->user()->name. '', $carts);
    }

    /**
     * store a newly created resource in storage
     * 
     * @param \Illuminate\Http\Request $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        $item = Cart::where('product_id', $request->product_id)->where('customer_id', auth()->guard('api_customer')->user()->id);

        //check if product al ready in cart and increment qty
        if($item->count())
        {
            //increment / update quantity
            $item->increment('qty');

            $item = $item->first();
            
            //sum price * quantity
            $price = $request->price * $item->qty;

            //sum weight
            $weight = $request->weight * $item->qty;

            $item = update([
                'price' => $price,
                'weight' => $weight
            ]);
        }
        else {
            //insert newt item cart
            $item = Cart::create([
                'product_id' => $request->product_id,
                'customer_id' => auth()->guard('api_customer')->user()->id,
                'qty' => $request->qty,
                'price' => $request->price,
                'weight' => $request->weight
            ]);
        }

        //return with Api Resource
        return new CartResource(true, 'Success Add To Cart', $item);
    }

    /**
     * getCartPrice
     * 
     * @return void
     */
    public function getCartPrice()
    {
        $totalPrice = Cart::with('product')
            ->where('customer_id', auth()->guard('api_customer')->user()->id)
            ->sum('price');

        //return with Api Resource
        return new CartResource(true, 'Total Cart Price', $totalPrice);
    }

    /**
     * getCartWeight
     * 
     * @return void
     */
    public function getCartWeight()
    {
        $totalweight = Cart::with('product')
            ->where('customer_id', auth()->guard('api_customer')->user()->id)
            ->sum('weight');

        //return with Api Resource
        return new CartResource(true, 'Total Cart Weight', $totalweight);
    }

    /**
     * remove Cart
     * 
     * @param mixed $request
     * @return void
     */
    public function removeCart(Request $request)
    {
        $cart = Cart::with('product')
            ->where($request->cart_id)
            ->first();

        $cart->delete();
    
        // return with Api Resource
        return new CartResource(true, 'Success Remove Item Cart', null);
    }

}