[Film] Get all needed data to present a local saved video file (duration, thumbnail) #swift4 #avfoundation

Film.swift

import UIKit
import AVFoundation

class Film {
    
    //MARK: - Properties
    
    var name: String
    var path: URL
    var duration: String {
        guard let path = path else { return "" }
        return getVideoDuration(from: path)
    }
    var thumbnail: UIImage {
        guard let path = path else { return #imageLiteral(resourceName: "placeholder-image4") }
        return getVideoThumbnail(from: path) ?? #imageLiteral(resourceName: "placeholder-image4")
    }
        
    //MARK: - Initualizers
    
    init(name: String, path: URL) {
        self.name = name
        self.path = path
    }
    
    //MARK: - Helpers
    
    private func getVideoThumbnail(from path: URL?) -> UIImage? {
        guard let path = path else { return nil }
        do {
            let asset = AVURLAsset(url: path , options: nil)
            let imgGenerator = AVAssetImageGenerator(asset: asset)
            imgGenerator.appliesPreferredTrackTransform = true
            let cgImage = try imgGenerator.copyCGImage(at: CMTimeMake(0, 1), actualTime: nil)
            let thumbnail = UIImage(cgImage: cgImage)
            
            return thumbnail
        } catch let error {
            print("*** Error generating thumbnail: \(error.localizedDescription)")
            return nil
        }
    }
    
    private func getVideoDuration(from path: URL) -> String {
        let asset = AVURLAsset(url: path)
        let duration: CMTime = asset.duration
        
        let totalSeconds = CMTimeGetSeconds(duration)
        let hours = Int(totalSeconds / 3600)
        let minutes = Int((totalSeconds.truncatingRemainder(dividingBy: 3600)) / 60)
        let seconds = Int(totalSeconds.truncatingRemainder(dividingBy: 60))
        
        if hours > 0 {
            return String(format: "%i:%02i:%02i", hours, minutes, seconds)
        } else {
            return String(format: "%02i:%02i", minutes, seconds)
        }
    }

}