//
//  ImageView.swift
//  Cyberlock
//
//  Created by Juraldinio on 9/1/19.
//  Copyright © 2019 Omicronmedia. All rights reserved.
//

import Foundation
import UIKit

typealias ImageViewAction = () -> Void

final class ImageView: UIImageView {
    
    var roundImage = false {
        didSet {
            self.layer.cornerRadius = self.roundImage ? self.bounds.width / 2.0 : 0
            self.layer.masksToBounds = true
        }
    }
    
    var action: ImageViewAction?
    
    var imageUrl: URL? {
        didSet {
            guard let url = self.imageUrl else {
                self.image = nil
                return
            }
            
            DispatchQueue.global(qos: .userInitiated).async { [weak self] in
                guard let image = UIImage(contentsOfFile: url.absoluteString) else { return }
                DispatchQueue.main.async {
                    self?.image = image
                }
            }
            
        }
    }
    
    override init(image: UIImage?) {
        super.init(image: image)
        self.setup()
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        self.setup()
    }
    
    @available(*, unavailable)
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    private func setup() {
        self.contentMode = .scaleAspectFill
        self.translatesAutoresizingMaskIntoConstraints = false
        
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapAction(tapGestureRecognizer:)))
        self.addGestureRecognizer(tapGesture)
    }
    
    @objc
    private func tapAction(tapGestureRecognizer: UITapGestureRecognizer) {
        guard let action = self.action else { return }
        action()
    }
}