Put AVPlayerLayer on UserNotification, also add play pause button

NotificationViewController.swift

/*
See LICENSE folder for this sample’s licensing information.

Abstract:
Contains ImageContentExtension's NotificationViewController.
*/

import UIKit
import UserNotifications
import UserNotificationsUI
import AVFoundation

/// - Tag: NotificationViewController
class NotificationViewController: UIViewController, UNNotificationContentExtension {

    @IBOutlet var imageView: UIImageView!
    @IBOutlet var likeLabel: UILabel!
    
    var videoPlayer: AVPlayer?
    var playerLayer: AVPlayerLayer?
    func didReceive(_ notification: UNNotification) {
        guard let attachment = notification.request.content.attachments.first else { return }
        self.imageView.alpha = 0
        
        // Get the attachment and set the image view.
        if attachment.url.startAccessingSecurityScopedResource() {
            self.videoPlayer = AVPlayer(url: URL(string: "https://bitdash-a.akamaihd.net/content/MI201109210084_1/m3u8s/f08e80da-bf1d-4e3d-8899-f0f6155f6efa.m3u8")!)
            self.playerLayer = AVPlayerLayer(player: self.videoPlayer)
            self.playerLayer?.frame = self.view.frame
            self.view.layer.addSublayer(self.playerLayer!)
            
            attachment.url.stopAccessingSecurityScopedResource()
        }
    }

    func didReceive(_ response: UNNotificationResponse, completionHandler completion: @escaping (UNNotificationContentExtensionResponseOption) -> Void) {
        // Handle various actions.
        if response.actionIdentifier == "likeAction" {
            likeLabel.isHidden = false
        } else if response.actionIdentifier == "reactAction" {
            becomeFirstResponder()
        }

        // Dont dismiss extension to allow further interaction.
        completion(.doNotDismiss)
    }

    override var canBecomeFirstResponder: Bool {
        // Need to become first responder to have custom input view.
        return true
    }

    override var inputView: UIView? {
        // Instantiate and return custom input view.
        let reactionsViewController = ReactionsViewController()
        reactionsViewController.delegate = self
        return reactionsViewController.view
    }
    
    var mediaPlayPauseButtonFrame: CGRect {
        return CGRect(x: self.view.frame.size.width - 50, y: self.view.frame.size.height - 50, width: 40, height: 40)
    }
    
    var mediaPlayPauseButtonTintColor: UIColor {
        return .white
    }
    
    var mediaPlayPauseButtonType: UNNotificationContentExtensionMediaPlayPauseButtonType {
        return .default
    }
    
    func mediaPlay() {
         self.videoPlayer?.play()
    }
    func mediaPause() {
        self.videoPlayer?.pause()
    }
}

extension NotificationViewController: ReactionsViewDelegate {
    func didSelectReaction(_ reaction: String?) {
        let reactionLabel = UILabel(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
        reactionLabel.font = UIFont.systemFont(ofSize: 22)
        // Set and position label text to reaction that was selected.
        reactionLabel.textAlignment = .center
        reactionLabel.text = reaction
        // Place label in random location in view.
        let originX = arc4random_uniform(UInt32(view.bounds.width))
        let originY = arc4random_uniform(UInt32(view.bounds.height))
        reactionLabel.center = CGPoint(x: CGFloat(originX), y: CGFloat(originY))
        // Rotate label to a random angle.
        let rotation = Float(arc4random_uniform(360))
        reactionLabel.transform = CGAffineTransform(rotationAngle: CGFloat(.pi * rotation / 180.0))
        self.view.addSubview(reactionLabel)
    }

    func didCompleteReacting() {
        // Resign first responder to dismiss custom input view.
        resignFirstResponder()
    }
}

This was incredibly useful. Thank you!