updated voucher modules

app/Http/Controllers/teamstore/TeamStoreController.php

@@ -678,7 +678,6 @@ class TeamStoreController extends Controller
 	public function addVoucher(Request $request)
 	{
 		$cartKey 		= $request->session()->get('cartkey');
-		$userId 				= Auth::user()->id;
 
 		if ($cartKey == "") {
 			return false;
@@ -713,6 +712,14 @@ class TeamStoreController extends Controller
 
 			// check if if voucher is already in used;
 			foreach ($items  as $item) {
+
+				if( $item->VoucherId) {
+					return response()->json(array(
+						'success' => false,
+						'message' => 'You can only apply one voucher per order.'
+					));
+				}
+				
 				if ($getVoucher[0]->Id == $item->VoucherId) {
 					return response()->json(array(
 						'success' => false,
@@ -736,6 +743,14 @@ class TeamStoreController extends Controller
 
 				if ($getVoucher[0]->VoucherType === "Flat") {
 
+					if (Auth::guest()) {
+						return response()->json(array(
+							'success' => false,
+							'message' => 'Log-in first to use this voucher.',
+						));
+					}
+
+					$userId 		= Auth::user()->id;
 					$isUsed = $TeamStoreModel->checkVoucher($userId, $getVoucher[0]->Id);
 
 					if (count($isUsed) >= 1) {