add: api version to idpay, pay and zarinpal

Author: ja7ad

_example/idpay/main.go

@@ -10,7 +10,7 @@ import (
 
 func main() {
 	c := client.New()
-	i, err := idpay.New(c, "YOUR_API_KEY", false)
+	i, err := idpay.New(c, "YOUR_API_KEY", true)
 	if err != nil {
 		log.Fatal(err)
 	}

providers/idpay/idpay.go

@@ -10,6 +10,8 @@ import (
 	"reflect"
 )
 
+const API_VERSION = "1.1"
+
 const (
 	IDPAY_HOST = "https://api.idpay.ir"
 

providers/pay/pay.go

@@ -11,6 +11,8 @@ import (
 	"strconv"
 )
 
+const API_VERSION = "1"
+
 const (
 	PAY_HOST = "https://pay.ir"
 

providers/zarinpal/zarinpal.go

@@ -8,6 +8,8 @@ import (
 	"net/http"
 )
 
+const API_VERSION = "4"
+
 const (
 	ZARINPAL_HOST         = "https://api.zarinpal.com"
 	ZARINPAL_SANDBOX_HOST = "https://sandbox.zarinpal.com"