restore composer.json, add mysqli extension

app/Helpers/helpers.php

@@ -0,0 +1,50 @@
+<?php
+
+use App\Models\Cart;
+use App\Models\PersonalAccessToken;
+use App\Models\User;
+use Illuminate\Support\Facades\Cookie;
+
+if (! function_exists('getAuthUser')) {
+    function getAuthUser()
+    {
+        $bearer = request()->bearerToken();
+
+        if ($bearer) {
+            [$personalAccessTokenId, $token] = explode('|', $bearer, 2);
+            $personalAccessToken = PersonalAccessToken::find($personalAccessTokenId);
+
+            if ($personalAccessToken && hash_equals($personalAccessToken->token, hash('sha256', $token))) {
+                return User::find($personalAccessToken->tokenable_id);
+            }
+        }
+
+        return null;
+    }
+}
+
+if (! function_exists('getCart')) {
+    function getCart($productId = null)
+    {
+        $user = getAuthUser();
+
+        if ($user) {
+            $cart = Cart::where('user_id', $user->id)->get();
+        } else {
+            $cart = Cart::where('token', Cookie::get('cart_token'))->get();
+        }
+
+        if ($productId) {
+            return $cart->where('product_id', $productId)->first();
+        }
+
+        return $cart;
+    }
+}
+
+if (! function_exists('ceiling')) {
+    function ceiling(float|int $num, $significance = 1)
+    {
+        return (ceil($num / $significance)) * $significance;
+    }
+}