//
//  UIButton.swift
//  Wallet
//
//  Created by Igor on 09.10.2020.
//  Copyright © 2020 List. All rights reserved.
//

import UIKit
import WalletFoundation

// MARK: - REFACTOR

private class Button: UIButton {
    var action: () -> Void
    init(title: String? = nil, image: UIImage? = nil, action: @escaping () -> Void) {
        self.action = action
        super.init(frame: .zero)
        lzTitle = title
        setImage(image, for: .normal)
        sizeToFit()
        addTarget(self, action: #selector(onAction), for: .touchUpInside)
    }
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    @objc func onAction() {
        action()
    }
}

extension UIButton {
    static func button(image: UIImage, action: @escaping () -> Void) -> UIButton {
        Button(image: image, action: action)
    }
}

extension UIControl.State: CaseIterable {
    public static var allCases: [Self] = [.normal, .focused, .disabled, .selected, .reserved, .highlighted, .application]
}

extension UIButton {
    private struct Values {
        static var fontNamed = "fontNamed"
        static var lzTitle = "lzTitle"
    }
    @IBInspectable var fontNamed: String? {
        get { Common.Runtime.object(self, key: &Values.fontNamed) ?? "regular_14" }
        set { Common.Runtime.set(self, value: newValue, key: &Values.fontNamed);updateTitle() }
    }
    @IBInspectable var lzTitle: String? {
        get { Common.Runtime.object(self, key: &Values.lzTitle) }
        set { Common.Runtime.set(self, value: newValue, key: &Values.lzTitle);updateTitle() }
    }
    private func updateTitle() {
        UIControl.State.allCases.forEach { state in
            self.setTitle(nil, for: state)
            self.fontNamed >>- { font in
                self.setAttributedTitle(lzTitle?.localized.attributed(named: font, color: titleColor(for: state) ?? .clear),
                                        for: state)
            }
        }
    }
}

extension UIButton {
    func alignTextBelow(spacing: CGFloat = 6.0) {
        if let image = self.imageView?.image {
            let imageSize: CGSize = image.size
            
            self.titleEdgeInsets = UIEdgeInsets(top: spacing, left: -imageSize.width, bottom: -(imageSize.height), right: 0.0)
            
            self.titleLabel >>- {
                let labelString = NSString(string: $0.text ?? "")
                let titleSize = labelString.size(withAttributes: [NSAttributedString.Key.font: $0.font])
                self.imageEdgeInsets = UIEdgeInsets(top: -(titleSize.height + spacing), left: 0.0, bottom: 0.0, right: -titleSize.width)
            }
        }
    }
}

extension UIControl {
    func addAction(for controlEvents: UIControl.Event = .touchUpInside, _ closure: @escaping () -> Void) {
        @objc class ClosureSleeve: NSObject {
            let closure:() -> Void
            init(_ closure: @escaping() -> Void) { self.closure = closure }
            @objc func invoke() { closure() }
        }
        let sleeve = ClosureSleeve(closure)
        addTarget(sleeve, action: #selector(ClosureSleeve.invoke), for: controlEvents)
        objc_setAssociatedObject(self, "\(UUID())", sleeve, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN)
    }
}