//
//  VisualEffectImageButton.swift
//  Tusker
//
//  Created by Shadowfacts on 6/26/20.
//  Copyright © 2020 Shadowfacts. All rights reserved.
//

import UIKit

class VisualEffectImageButton: UIControl {

    @IBInspectable
    var image: UIImage! {
        didSet {
            imageView?.image = image
        }
    }
    
    var menu: UIMenu?
    
    private(set) var imageView: UIImageView!
    
    override func awakeFromNib() {
        super.awakeFromNib()
        
        let blur = UIBlurEffect(style: .prominent)
        let blurView = UIVisualEffectView(effect: blur)
        blurView.translatesAutoresizingMaskIntoConstraints = false
        let vibrancy = UIVibrancyEffect(blurEffect: blur, style: .label)
        let vibrancyView = UIVisualEffectView(effect: vibrancy)
        vibrancyView.translatesAutoresizingMaskIntoConstraints = false
        imageView = UIImageView(image: self.image)
        imageView.contentMode = .scaleAspectFit
        imageView.translatesAutoresizingMaskIntoConstraints = false
        vibrancyView.contentView.addSubview(imageView)
        blurView.contentView.addSubview(vibrancyView)
        addSubview(blurView)
        
        NSLayoutConstraint.activate([
            blurView.leadingAnchor.constraint(equalTo: self.leadingAnchor),
            blurView.trailingAnchor.constraint(equalTo: self.trailingAnchor),
            blurView.topAnchor.constraint(equalTo: self.topAnchor),
            blurView.bottomAnchor.constraint(equalTo: self.bottomAnchor),
            vibrancyView.leadingAnchor.constraint(equalTo: blurView.leadingAnchor),
            vibrancyView.trailingAnchor.constraint(equalTo: blurView.trailingAnchor),
            vibrancyView.topAnchor.constraint(equalTo: blurView.topAnchor),
            vibrancyView.bottomAnchor.constraint(equalTo: blurView.bottomAnchor),
            imageView.leadingAnchor.constraint(equalTo: vibrancyView.leadingAnchor, constant: 2),
            imageView.trailingAnchor.constraint(equalTo: vibrancyView.trailingAnchor, constant: -2),
            imageView.topAnchor.constraint(equalTo: vibrancyView.topAnchor, constant: 2),
            imageView.bottomAnchor.constraint(equalTo: vibrancyView.bottomAnchor, constant: -2),
        ])
        
        addInteraction(UIContextMenuInteraction(delegate: self))
        
        addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(onTap)))
    }
    
    @objc private func onTap() {
        sendActions(for: .touchUpInside)
    }

    override func contextMenuInteraction(_ interaction: UIContextMenuInteraction, configurationForMenuAtLocation location: CGPoint) -> UIContextMenuConfiguration? {
        guard let menu = menu else { return nil }
        return UIContextMenuConfiguration(identifier: nil, previewProvider: nil) { (_) -> UIMenu? in
            return menu
        }
    }
}