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Enable push notifications first

Before you can configure push notifications, you'll need to turn on push notifications in Kustomer.

To learn more, see [Push Keys and Certificates](🔗).

This guide shows you how to implement and test push notifications for your app after you turn on push notifications based on your [Push Keys and Certificates](🔗) in Kustomer.

We'll cover the following topics:

  • How to configure Kustomer push notifications in your app delegate

  • How to integrate Kustomer push notifications with your own app push notifications

  • How to test push notifications with an APNs (Apple Push Notification service) file or a push simulator

## Prerequisites

You'll need the following before you begin:

  • Push notifications turned on in your Kustomer [Chat Management: SDK settings](🔗).

## Configure Kustomer push notifications

First, we'll add Kustomer methods to your app delegate to request push notification permissions from the user.



You can customize your push notifications content to redact sensitive information. To make these changes, go to **Apps > Chat** and select the **SDK** tab.

**Step 1. Add Kustomer methods to your app delegate**

First, add the following two methods to your app delegate: 


**Step 2. Request push permissions from the user**
Next, request push notifications permissions from the user with the following method: 

Call `Kustomer.requestAuthorizationForPush()` when you want to prompt the user with "Allow notifications?" 
If the user has already granted permission, this method will have no effect and can be called multiple times in the code.
You must call `Kustomer.requestAuthorizationForPush()` after you call `Kustomer.configure(apiKey: "foo", options:options)` to [initialize the Chat SDK with options](🔗).
## Integrate Kustomer push notifications - DEPRECATED
DEPRECATION WARNING
This implementation is deprecated. Please see "Implement Kustomer SDK as Secondary Handler" below for the preferred integration.
If you already use push notifications in your app, you can continue processing your own pushes through a [`UNUserNotificationCenterDelegate`](🔗). 
Set the `unUserNotificationCenterDelegate` to ensure that your delegate receives all non-Kustomer Chat pushes.
Always automate your settings for `UNUserNotificationCenter.current().delegate`
When you use push notifications, always allow the `UNUserNotificationCenter.current().delegate` to be set automatically through the Kustomer Chat SDK.
The Kustomer Chat SDK will **automatically** set your `UNUserNotificationCenter.current().delegate` in either of the following scenarios:
  • If push notifications are turned on when the app launches
  • If push notifications are turned on while your app is running
If your app implements its own `UNUserNotificationCenterDelegate`, you can assign the delegate to [`Kustomer.unUserNotificationCenterDelegate`](🔗).

## Implement Kustomer SDK as secondary handler
If your app already has push notifications implemented or you wish to better integrate with other third-party frameworks that provide push services you should set your application as the notification center delegate and pass Kustomer push notifications to the Kustomer SDK.
In this case your application will be responsible for managing the `UNUserNotificationCenter.current().delegate` and this delegate will need to pass Kustomer push notifications to the Kustomer SDK. This delegate will need to be set before calling `Kustomer.configure(apiKey: "foo", options:options)`.

Note that `Kustomer.pushProvider.userNotificationCenter(center, didReceive: response, withCompletionHandler: completionHandler)` will attempt to open the Kustomer Chat Widget at the relevant conversation if the user is currently authenticated for that chat.
WARNING - Potential Infinite Recursion
If you had previously implemented Kustomer push notifications by setting `Kustomer.unUserNotificationCenterDelegate` and you add this implementation, your application can enter an infinite loop when it receives a non-Kustomer push notification. To avoid this remove any code that sets `Kustomer.unUserNotificationCenterDelegate` and be sure to include the check for `threadIdentifier` as shown above.
## Test Kustomer push notifications
Pushes from Kustomer use the `production` APNs environment and will only display after your app downloads from [TestFlight](🔗) or the Apple App Store.
You can test Kustomer push notifications with an APNs file or a push simulator.
### Test with an APNs file in Xcode
If you're using your own push notifications alongside Kustomer Chat push notifications, we recommend that you test your pushes on the [iOS simulator available in Xcode](🔗). 
To test with an APNs file in Xcode, drag your APNs file into the iOS simulator. An APNs file is the same as a normal push JSON payload file, but also includes a `Simulator Target Bundle` key with the bundle ID for your app.
We've provided an example of an APNs file that will send a push identical to a push sent from Kustomer:

### Test with a push simulator
Use a push simulator to test pushes with a development, or sandbox, APNs environment. 
A push simulator connects to the APNs service, sends data, and then APNs sends the push to your device.
If you want to use a push simulator like [PushHero](🔗) with a real device, you can set [`options.pushEnvironment`](🔗) in your [`KustomerOptions`](🔗) configuration to `options.pushEnvironment = development` and use the sample JSON payload below with the correct app bundle ID.