AVPlayer+Singleton

//
//  AVPlayer+Singleton.swift
//  DeveloperBelt
//
//  Created by Egzon Pllana on 11/5/19.
//  Copyright © 2019 Native Coders. All rights reserved.
//

import Foundation
import MediaPlayer

enum PlayType {
    case meditation
    case breathing
}

class AVPlayerSingleton {

    // MARK: - Properties

    // Singleton pattern
    static let shared = AVPlayerSingleton()
    private var playerTimeObserver: Any?

    // Timer
    var timePlayed: Double = 0

    // Player
    var player: AVPlayer?
    var isPlaying: Bool = false
    var playId: Int?
    var playType: PlayType?

    // Get the shared MPRemoteCommandCenter
    private let commandCenter = MPRemoteCommandCenter.shared()

    // MARK: - Functions

    func initPlayer(withPlayId playId: Int? = nil, withURL url: URL, withPlayType playType: PlayType) -> AVPlayer {

        // Stop and release current player if there is any
        self.pause()
        self.timePlayed = 0

        // Register for RemoteCommandCenter observers
        addCommandCenterManagerObservers()

        // Init player with id
        let playerItem = AVPlayerItem.init(url: url)
        playerItem.preferredPeakBitRate = 2
        let player = AVPlayer.init(playerItem: playerItem)

        // Initialize self properties
        self.player = player
        self.playId = playId
        self.playType = playType

        // Add started playing observer
        let interval = CMTime.init(value: 1, timescale: 2)
        playerTimeObserver = player.addPeriodicTimeObserver(forInterval: interval, queue: DispatchQueue.main) { [weak self] time in
            guard let self = self else { return }
            self.isPlaying = true
            self.timePlayed = time.seconds
        }

        return player
    }

    @objc private func play() {
        guard let player = player, isPlaying != true else { return }

        isPlaying = true
        player.play()
    }

    @objc private func pause() {
        guard let player = player, isPlaying != false else { return }

        isPlaying = false
        player.pause()
    }

    func stopPlayer() {
        if let pto = playerTimeObserver{
            player?.removeTimeObserver(pto)
            playerTimeObserver = nil
        }

        self.isPlaying = false
        self.player = nil
    }

    private func addCommandCenterManagerObservers() {

        // Add handler for Play command
        commandCenter.playCommand.addTarget { [weak self] event in
            guard let self = self else { return .commandFailed }
            self.play()
            return .success
        }

        // Add handler for Pause command
        commandCenter.pauseCommand.addTarget { [weak self] event in
            guard let self = self else { return .commandFailed }
            self.pause()
            return .success
        }
    }
}

Dear sir,

I'm really thankful for provide the best code support replay audio.