//
//  GifvAttachmentView.swift
//  Tusker
//
//  Created by Shadowfacts on 5/12/20.
//  Copyright © 2020 Shadowfacts. All rights reserved.
//

import UIKit
import AVFoundation

class GifvAttachmentView: UIView {
    
    override class var layerClass: AnyClass {
        return AVPlayerLayer.self
    }
    
    private var playerLayer: AVPlayerLayer {
        layer as! AVPlayerLayer
    }

    let item: AVPlayerItem
    let player: AVPlayer
    
    init(asset: AVAsset, gravity: AVLayerVideoGravity) {
        item = AVPlayerItem(asset: asset)
        player = AVPlayer(playerItem: item)

        super.init(frame: .zero)
        
        playerLayer.player = player
        playerLayer.videoGravity = gravity
        player.play()
        
        NotificationCenter.default.addObserver(self, selector: #selector(restartItem), name: .AVPlayerItemDidPlayToEndTime, object: item)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    @objc func restartItem() {
        item.seek(to: .zero) { (success) in
            guard success else { return }
            self.player.play()
        }
    }

}