adding a cart

routes/web.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Models\Cart;
 use App\Models\Product;
 use Illuminate\Support\Facades\Route;
 use Laravel\Fortify\Features;
@@ -8,9 +9,20 @@ use Laravel\Fortify\Features;
     'canRegister' => Features::enabled(Features::registration()),
 ])->name('home');*/
 
-Route::get('/', fn () => inertia('Home', [
-    'products' => Product::all(),
-]))->name('home');
+Route::get('/', function () {
+    $cartId = session('cart_id');
+    $cart = $cartId ? Cart::with('products')->find($cartId) : null;
+
+    return inertia('Home', [
+        'products' => Product::all(),
+        'cart' => $cart
+            ? $cart->products->map(fn ($p) => [
+                'product_id' => $p->id,
+                'quantity' => $p->pivot->quantity,
+            ])
+            : [],
+    ]);
+})->name('home');
 
 Route::middleware(['auth', 'verified'])->group(function () {
     Route::inertia('dashboard', 'Dashboard')->name('dashboard');