fix comment adding

order.go

@@ -11,14 +11,11 @@ type Order struct {
 	ApiClient *ApiClient
 }
 
-func (order *Order) AddComment(comment string) error {
+func (order *Order) AddComment(statusHistory types.StatusHistory) error {
 	endpoint := order.Route + orderComments
 	httpClient := order.ApiClient.HttpClient
 
-	payLoad := types.StatusHistory{
-		Comment:  comment,
-		ParentID: order.ID,
-	}
+	payLoad := statusHistory
 
 	resp, err := httpClient.R().SetBody(payLoad).Post(endpoint)
 	if err != nil {

types/status_history.go

@@ -1,13 +1,13 @@
 package types
 
 type StatusHistory struct {
-	Comment             string              `json:"comment"`
-	CreatedAt           string              `json:"created_at"`
-	EntityID            int                 `json:"entity_id"`
-	EntityName          string              `json:"entity_name"`
-	IsCustomerNotified  int                 `json:"is_customer_notified"`
-	IsVisibleOnFront    int                 `json:"is_visible_on_front"`
-	ParentID            int                 `json:"parent_id"`
-	Status              string              `json:"status"`
-	ExtensionAttributes ExtensionAttributes `json:"extension_attributes"`
+	Comment             string              `json:"comment,omitempty"`
+	CreatedAt           string              `json:"created_at,omitempty"`
+	EntityID            int                 `json:"entity_id,omitempty"`
+	EntityName          string              `json:"entity_name,omitempty"`
+	IsCustomerNotified  int                 `json:"is_customer_notified,omitempty"`
+	IsVisibleOnFront    int                 `json:"is_visible_on_front,omitempty"`
+	ParentID            int                 `json:"parent_id,omitempty"`
+	Status              string              `json:"status,omitempty"`
+	ExtensionAttributes ExtensionAttributes `json:"extension_attributes,omitempty"`
 }