docs: added Klarna documentation

docs/content/add-plugins/klarna.md

@@ -1,13 +1,80 @@
----
-hide_footer: true
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-
 # Klarna
 
-:::note
+In this document, you’ll learn how to integrate Klarna as a payment provider in Medusa.
+
+## Introduction
+
+[Klarna](https://www.klarna.com/) is a payment provider that allows customers to pay in different ways including direct payment, installment payments, payment after delivery, and more.
+
+You can integrate Klarna into Medusa using the [official plugin](https://github.com/medusajs/medusa/tree/master/packages/medusa-payment-klarna).
+
+## Prerequisites
+
+### Medusa Components
+
+It is assumed that you already have a Medusa server installed and set up. If not, you can follow the [quickstart guide](../quickstart/quick-start.md).
+
+In addition, you’ll need to use the [Medusa Admin](../admin/quickstart.md) to enable the payment provider in later steps. You can alternatively use the [REST APIs](/api/admin/#tag/Region/operation/PostRegionsRegionPaymentProviders).
+
+### Needed Accounts
+
+- A [Klarna business account](https://portal.klarna.com/)
+
+## Install Plugin
+
+On your Medusa server, run the following command to install the plugin:
+
+```bash
+npm install medusa-payment-klarna
+```
+
+Then, add the following environment variables:
+
+```bash
+KLARNA_BACKEND_URL=<YOUR_KLARNA_BACKEND_URL>
+KLARNA_URL=<YOUR_KLARNA_URL>
+KLARNA_USER=<YOUR_KLARNA_USER>
+KLARNA_PASSWORD=<YOUR_KLARNA_PASSWORD>
+KLARNA_TERMS_URL=<YOUR_KLARNA_TERMS_URL>
+KLARNA_CHECKOUT_URL=<YOUR_KLARNA_CHECKOUT_URL>
+KLARNA_CONFIRMATION_URL=<YOUR_KLARNA_CONFIRMATION_URL>
+```
+
+Where:
+
+- `<YOUR_KLARNA_BACKEND_URL>` is your Klarna URL.
+- `<YOUR_KLARNA_URL>` is the [base Klarna URL based on your environment](https://docs.klarna.com/api/api-urls/).
+- `<YOUR_KLARNA_USER>` and `<YOUR_KLARNA_PASSWORD>` are your [API credentials](https://docs.klarna.com/api/authentication/).
+- `<YOUR_KLARNA_TERMS_URL>`, `<YOUR_KLARNA_CHECKOUT_URL>`, and `<YOUR_KLARNA_CONFIRMATION_URL>` are the terms, checkout, and confirmation URL of your Klarna account.
+
+Finally, in `medusa-config.js`, add the Klarna plugin to the `plugins` array with the necessary configurations:
+
+```jsx title=medusa-config.js
+const plugins = [
+  //other plugins...
+  {
+    resolve: `medusa-payment-klarnal`,
+    options: {
+      backend_url: process.env.KLARNA_BACKEND_URL
+      url: process.env.KLARNA_URL,
+      user: process.env.KLARNA_USER,
+      password: process.env.KLARNA_PASSWORD,
+      merchant_urls: {
+        terms: process.env.KLARNA_TERMS_URL,
+        checkout: process.env.KLARNA_CHECKOUT_URL,
+        confirmation: process.env.KLARNA_CONFIRMATION_URL
+      }
+    }
+  }
+];
+```
+
+## Enable Klarna in Regions
+
+To use Klarna in your store, you must enable it in at least one region.
 
-This guide is coming soon.
+You can follow [this user guide to learn how to enable a payment provider in a region](../user-guide/regions/providers#manage-payment-providers). You can alternatively use the [REST APIs](/api/admin/#tag/Region/operation/PostRegionsRegionPaymentProviders).
 
-:::
+## What’s Next
 
-[View plugin](https://github.com/medusajs/medusa/tree/master/packages/medusa-payment-klarna)
+- Check out [more plugins](https://github.com/medusajs/medusa/tree/master/packages) you can add to your store.

docs/content/advanced/admin/import-prices.mdx

@@ -1,9 +1,9 @@
 import Tabs from '@theme/Tabs';
 import TabItem from '@theme/TabItem';
 
-# How to Import Prices
+# How to Bulk Import Prices
 
-In this document, you’ll learn how to import prices into a price list using the Admin APIs.
+In this document, you’ll learn how to bulk import prices into a price list using the Admin APIs.
 
 ## Overview
 

docs/content/advanced/admin/import-products.mdx

@@ -1,9 +1,9 @@
 import Tabs from '@theme/Tabs';
 import TabItem from '@theme/TabItem';
 
-# How to Import Products
+# How to Bulk Import Products
 
-In this document, you’ll learn how to use the Admin APIs to import products into a Medusa server.
+In this document, you’ll learn how to use the Admin APIs to bulk import products into a Medusa server.
 
 ## Overview