From 0a000fef5278305e913908ad31eecdd539ba9602 Mon Sep 17 00:00:00 2001
From: andchir <andchir@gmail.com>
Date: Tue, 30 Apr 2019 14:14:36 +0300
Subject: [PATCH] Currency not required. Remove currency RUB (default)

---
 src/Message/AbstractRequest.php | 8 ++++++++
 src/Message/PurchaseRequest.php | 6 ++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/Message/AbstractRequest.php b/src/Message/AbstractRequest.php
index fab27f9..69a38c9 100644
--- a/src/Message/AbstractRequest.php
+++ b/src/Message/AbstractRequest.php
@@ -101,6 +101,14 @@ public function setReceipt($value)
         return $this->setParameter('receipt', $value);
     }
 
+    public function getCurrency()
+    {
+        if ($this->getParameter('currency') === 'RUB') {
+            return '';
+        }
+        return $this->getParameter('currency');
+    }
+
     /**
      * Get the payment currency label.
      *
diff --git a/src/Message/PurchaseRequest.php b/src/Message/PurchaseRequest.php
index 0941cf3..1c68928 100644
--- a/src/Message/PurchaseRequest.php
+++ b/src/Message/PurchaseRequest.php
@@ -36,9 +36,11 @@ public function generateSignature()
         $params = [
             $this->getPurse(),
             $this->getAmount(),
-            $this->getInvId(),
-            $this->getCurrency()
+            $this->getInvId()
         ];
+        if ($this->getCurrency()) {
+            array_push($params, $this->getCurrency());
+        }
         if ($this->getReceipt()) {
             array_push($params, $this->getReceipt());
         }