實作產品與庫存匯入邏輯 (ProductImport, InventoryImport) 並更新相關 Service 與 Controller

app/Modules/Inventory/Services/ProductService.php

@@ -110,4 +110,72 @@ class ProductService implements ProductServiceInterface
     {
         return Product::whereIn('code', $codes)->get();
     }
+
+    public function createProduct(array $data)
+    {
+        if (empty($data['code'])) {
+            $data['code'] = $this->generateRandomCode();
+        }
+
+        if (empty($data['barcode'])) {
+            $data['barcode'] = $this->generateRandomBarcode();
+        }
+
+        return Product::create($data);
+    }
+
+    public function updateProduct(Product $product, array $data)
+    {
+        if (empty($data['code'])) {
+            $data['code'] = $this->generateRandomCode();
+        }
+
+        if (empty($data['barcode'])) {
+            $data['barcode'] = $this->generateRandomBarcode();
+        }
+
+        $product->update($data);
+        return $product;
+    }
+
+    public function generateRandomCode()
+    {
+        $characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+        $code = '';
+        
+        do {
+            $code = '';
+            for ($i = 0; $i < 8; $i++) {
+                $code .= $characters[rand(0, strlen($characters) - 1)];
+            }
+        } while (Product::where('code', $code)->exists());
+
+        return $code;
+    }
+
+    public function generateRandomBarcode()
+    {
+        $barcode = '';
+        
+        do {
+            $barcode = '';
+            for ($i = 0; $i < 13; $i++) {
+                $barcode .= rand(0, 9);
+            }
+        } while (Product::where('barcode', $barcode)->exists());
+
+        return $barcode;
+    }
+
+    public function findByBarcodeOrCode(?string $barcode, ?string $code)
+    {
+        $product = null;
+        if (!empty($barcode)) {
+            $product = Product::where('barcode', $barcode)->first();
+        }
+        if (!$product && !empty($code)) {
+            $product = Product::where('code', $code)->first();
+        }
+        return $product;
+    }
 }