//
//  VolumeView.swift
//  LeCountdown
//
//  Created by Laurent Morvillier on 08/03/2023.
//

import SwiftUI
import MediaPlayer
import UIKit

struct VolumeView: UIViewRepresentable {
    
    var changeVolume: Bool

    init(changeVolume: Bool = false) {
        self.changeVolume = changeVolume
    }
    
    func makeUIView(context: Context) -> MPVolumeView {
        let volumeView = MPVolumeView(frame: .zero)
//        volumeView.isHidden = self.changeVolume
        
        if self.changeVolume {
            self._setVolume(volumeView: volumeView)
        }

        return volumeView
    }

    func updateUIView(_ view: MPVolumeView, context: Context) {
//        Logger.log("update volume view")
        if self.changeVolume {
            self._setVolume(volumeView: view)
        }
    }

    fileprivate func _setVolume(volumeView: MPVolumeView) {
        if let slider = volumeView.subviews.first(where: { $0 is UISlider }) as? UISlider {
            
            DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.1) {
                Logger.log("update volume view to \(Preferences.defaultVolume)")

                slider.setValue(Preferences.defaultVolume, animated: false)
            }
        }
    }
    
}

struct VolumeView_Previews: PreviewProvider {
    static var previews: some View {
        VolumeView()
    }
}