From d8b0c092dd229e923d39161463073ea6ed04de45 Mon Sep 17 00:00:00 2001
From: Alex Lushpai <lushpai@gmail.com>
Date: Mon, 4 May 2026 17:00:47 +0300
Subject: [PATCH] fix for delivery calculate

---
 client.go      |  9 +++++++--
 client_test.go | 14 ++++++++++----
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/client.go b/client.go
index 1756d41..1d97d03 100644
--- a/client.go
+++ b/client.go
@@ -2587,9 +2587,14 @@ func (c *Client) DeliveryCalculate(parameters DeliveryCalculateRequest) (Deliver
 		return resp, 0, err
 	}
 
+	deliveryTypeCodesJSON, err := marshalToString(parameters.DeliveryTypeCodes)
+	if err != nil {
+		return resp, 0, err
+	}
+
 	p := url.Values{
-		"deliveryTypeCodes[]": parameters.DeliveryTypeCodes,
-		"order":               {orderJSON},
+		"deliveryTypeCodes": {deliveryTypeCodesJSON},
+		"order":             {orderJSON},
 	}
 
 	data, status, err := c.PostRequest("/delivery/calculate", p)
diff --git a/client_test.go b/client_test.go
index 45f2353..94f0ef5 100644
--- a/client_test.go
+++ b/client_test.go
@@ -6869,9 +6869,12 @@ func TestClient_DeliveryCalculate(t *testing.T) {
 	orderJSON, err := json.Marshal(req.Order)
 	assert.NoError(t, err)
 
+	deliveryTypeCodesJSON, err := json.Marshal(req.DeliveryTypeCodes)
+	assert.NoError(t, err)
+
 	p := url.Values{
-		"deliveryTypeCodes[]": req.DeliveryTypeCodes,
-		"order":               {string(orderJSON)},
+		"deliveryTypeCodes": {string(deliveryTypeCodesJSON)},
+		"order":             {string(orderJSON)},
 	}
 
 	gock.New(crmURL).
@@ -6915,9 +6918,12 @@ func TestClient_DeliveryCalculate_Fail(t *testing.T) {
 	orderJSON, err := json.Marshal(req.Order)
 	assert.NoError(t, err)
 
+	deliveryTypeCodesJSON, err := json.Marshal(req.DeliveryTypeCodes)
+	assert.NoError(t, err)
+
 	p := url.Values{
-		"deliveryTypeCodes[]": req.DeliveryTypeCodes,
-		"order":               {string(orderJSON)},
+		"deliveryTypeCodes": {string(deliveryTypeCodesJSON)},
+		"order":             {string(orderJSON)},
 	}
 
 	gock.New(crmURL).