val egz

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Http\Controllers\Controller;
use \App\User;
use \App\Food;

interface PagesInterface
{
    public function index();
    public function food();
    public function addToCart($id);
    public function update(Request $request);
    public function remove(Request $request);
}

class PagesController extends Controller implements PagesInterface
{

    public function index(){
       $users = User::all();
        return view('pages.index', ['users' => $users]);
    }
    public function food(){
        $foods = Food::all();
         return view('food.index', ['foods' => $foods]);
     }

     public function addToCart($id)
    {
        $food = Food::find($id);

        if(!$food) {

            abort(404);

        }
        $cart = session()->get('cart');
        // if cart is empty then this the first product
        if(!$cart) {

            $cart = [
                    $id => [
                        "name" => $food->name,
                        "quantity" => 1,
                        "price_big" => $food->price_big,
                        "image" => $food->image
                    ]
            ];

            session()->put('cart', $cart);

            return redirect()->back()->with('success', 'Product added to cart successfully!');
        }

        // if cart not empty then check if this product exist then increment quantity
        if(isset($cart[$id])) {

            $cart[$id]['quantity']++;

            session()->put('cart', $cart);

            return redirect()->back()->with('success', 'Product added to cart successfully!');

        }

        // if item not exist in cart then add to cart with quantity = 1
        $cart[$id] = [
            "name" => $food->name,
            "quantity" => 1,
            "price_big" => $food->price_big,
            "image" => $food->image
        ];

        session()->put('cart', $cart);

        return redirect()->back()->with('success', 'Product added to cart successfully!');
    }

    public function update(Request $request)
        {
            if($request->id and $request->quantity)
            {
                $cart = session()->get('cart');

                $cart[$request->id]["quantity"] = $request->quantity;

                session()->put('cart', $cart);

                session()->flash('success', 'Cart updated successfully');
            }
        }

        public function remove(Request $request)
        {
            if($request->id) {

                $cart = session()->get('cart');

                if(isset($cart[$request->id])) {

                    unset($cart[$request->id]);

                    session()->put('cart', $cart);
                }

                session()->flash('success', 'Product removed successfully');
            }
        }
}