feat(medusa-payment-klarna): Add language variable (#4483)

* Add language variable

* Add changeset

.changeset/early-monkeys-rush.md

@@ -0,0 +1,5 @@
+---
+"medusa-payment-klarna": minor
+---
+
+Add language support

packages/medusa-payment-klarna/README.md

@@ -37,6 +37,7 @@ Receive payments on your Medusa commerce application using Klarna.
   KLARNA_TERMS_URL=<YOUR_KLARNA_TERMS_URL>
   KLARNA_CHECKOUT_URL=<YOUR_KLARNA_CHECKOUT_URL>
   KLARNA_CONFIRMATION_URL=<YOUR_KLARNA_CONFIRMATION_URL>
+  KLARNA_LANGUAGE=<YOUR_KLARNA_LANGUAGE>
   ```
 
 3\. In `medusa-config.js` add the following at the end of the `plugins` array:
@@ -51,6 +52,7 @@ Receive payments on your Medusa commerce application using Klarna.
         url: process.env.KLARNA_URL,
         user: process.env.KLARNA_USER,
         password: process.env.KLARNA_PASSWORD,
+        language: process.env.KLARNA_LANGUAGE,
         merchant_urls: {
           terms: process.env.KLARNA_TERMS_URL,
           checkout: process.env.KLARNA_CHECKOUT_URL,

packages/medusa-payment-klarna/src/services/klarna-provider.js

@@ -39,6 +39,7 @@ class KlarnaProviderService extends PaymentService {
     this.klarnaOrderManagementUrl_ = "/ordermanagement/v1/orders"
 
     this.backendUrl_ = options.backend_url
+    this.locale_ = options.language ?? 'en-US'
 
     /** @private @const {ShippingProfileService} */
     this.shippingProfileService_ = shippingProfileService
@@ -101,7 +102,7 @@ class KlarnaProviderService extends PaymentService {
     let order = {
       // Cart id is stored, such that we can use it for hooks
       merchant_data: cart.resource_id ?? cart.id,
-      locale: "en-US",
+      locale: this.locale_,
     }
 
     const { region, gift_card_total, tax_total, total } = cart
@@ -265,7 +266,7 @@ class KlarnaProviderService extends PaymentService {
     const order = {
       // Custom id is stored, such that we can use it for hooks
       merchant_data: resource_id,
-      locale: "en-US",
+      locale: this.locale_,
       order_lines: [
         {
           name: "Payment Collection",