¨4.0.1¨

Modules/Cart/Http/Middleware/CheckCartItemsStock.php

@@ -0,0 +1,112 @@
+<?php
+
+namespace Modules\Cart\Http\Middleware;
+
+use Closure;
+use Exception;
+use Modules\Cart\CartItem;
+use Illuminate\Http\Request;
+use Modules\Cart\Facades\Cart;
+use Modules\FlashSale\Entities\FlashSale;
+use Modules\Cart\Exceptions\CartItemsStockException;
+
+class CheckCartItemsStock
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param Request $request
+     * @param Closure $next
+     *
+     * @return mixed
+     */
+    public function handle(Request $request, Closure $next): mixed
+    {
+        try {
+            Cart::items()->each(function (CartItem $cartItem) {
+                $cartItem->refreshStock();
+                $this->checkStock($cartItem);
+            });
+        } catch (CartItemsStockException $e) {
+            if (request()->wantsJson()) {
+                return response()->json(
+                    [
+                        'message' => $e->getMessage(),
+                    ],
+                    400
+                );
+            }
+
+            return redirect()->back()->with('error', $e->getMessage());
+        } catch (Exception $e) {
+            if (app()->hasDebugModeEnabled()) {
+                $message = $e->getMessage();
+            } else {
+                $message = trans('core::something_went_wrong');
+            }
+
+            if (request()->ajax()) {
+                return response()->json(
+                    [
+                        'message' => $message,
+                    ],
+                    400
+                );
+            }
+
+            return redirect()->back()->with('error', $message);
+        }
+
+        return $next($request);
+    }
+
+
+    public function isInStock($cartItem)
+    {
+        return $cartItem->item->isInStock();
+    }
+
+
+    /**
+     * @throws CartItemsStockException
+     */
+    private function checkStock(CartItem $cartItem): void
+    {
+        if (!$this->isInStock($cartItem)) {
+            throw new CartItemsStockException(trans('cart::messages.one_or_more_product_is_out_of_stock'));
+        }
+
+        if (!$this->hasFlashSaleStock($cartItem)) {
+            throw new CartItemsStockException(trans('cart::messages.one_or_more_product_doesn\'t_have_enough_stock'));
+        }
+
+        if (!$this->hasStock($cartItem)) {
+            throw new CartItemsStockException(trans('cart::messages.one_or_more_product_doesn\'t_have_enough_stock'));
+        }
+    }
+
+
+    private function hasFlashSaleStock(CartItem $cartItem): bool
+    {
+        if ($cartItem->variant || !FlashSale::contains($cartItem->product)) {
+            return true;
+        }
+
+        $remainingQty = FlashSale::remainingQty($cartItem->product);
+        $addedCartQty = Cart::addedQty($cartItem);
+
+        return ($remainingQty - $addedCartQty) >= 0;
+    }
+
+
+    private function hasStock(CartItem $cartItem): bool
+    {
+        if (!$cartItem->item->manage_stock) {
+            return true;
+        }
+
+        $addedCartQty = Cart::addedQty($cartItem);
+
+        return ($cartItem->item->qty - $addedCartQty) >= 0;
+    }
+}