//
//  UIBarButtonItem.swift
//  List
//
//  Created by Igor Danich on 29.06.2020.
//  Copyright © 2020 Igor Danich. All rights reserved.
//

import UIKit

private class BarButtonItem: UIBarButtonItem {
    var completion: (() -> Void)?
    init(image: UIImage, completion: @escaping () -> Void) {
        super.init()
        self.completion = completion
        self.image = image
        target = self
        action = #selector(onAction)
    }
    init(title: String, titleTextAttributes: [NSAttributedString.Key: Any]? = nil, completion: @escaping () -> Void) {
        super.init()
        self.completion = completion
        self.title = title
        self.setTitleTextAttributes(titleTextAttributes ?? [
            .font: UIFont.font(style: .medium, size: 16),
            .foregroundColor: Asset.textDeepWater.color
        ], for: .normal)
        target = self
        action = #selector(onAction)
    }
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    @objc func onAction() {
        completion?()
    }
}

extension UIBarButtonItem {
    static func custom(title: String, titleTextAttributes: [NSAttributedString.Key: Any]? = nil, _ completion: @escaping () -> Void) -> UIBarButtonItem {
        let item = BarButtonItem(title: title, completion: completion)
        return item
    }
    static func custom(image: UIImage, _ completion: @escaping () -> Void) -> UIBarButtonItem {
        let item = BarButtonItem(image: image, completion: completion)
        item.imageInsets.left = 2
        return item
    }
    static func custom(image: ImageAsset, _ completion: @escaping () -> Void) -> UIBarButtonItem {
        .custom(image: image.image, completion)
    }
    static func menu(_ completion: @escaping () -> Void) -> UIBarButtonItem {
        .custom(image: Asset.commonMenu.image, completion)
    }
    static func qr(image: UIImage? = nil, _ completion: @escaping () -> Void) -> UIBarButtonItem {
        .custom(image: image ?? Asset.commonQr.image, completion)
    }
    static func back(_ completion: @escaping () -> Void) -> UIBarButtonItem {
        .custom(image: Asset.commonBack.image, completion)
    }
    static func pop(_ viewController: UIViewController, animated: Bool = true, _ completion: ((UIViewController) -> Void)? = nil) -> UIBarButtonItem {
        .back { [weak viewController] in
            guard let vc = viewController else { return }
            completion?(vc)
            vc.navigationController?.popViewController(animated: animated)
        }
    }
    static func popToRoot(_ viewController: UIViewController, animated: Bool = true, _ completion: (() -> Void)? = nil) -> UIBarButtonItem {
        .back { [unowned viewController] in
            completion?()
            viewController.navigationController?.popToRootViewController(animated: animated)
        }
    }
    static func close(_ completion: @escaping () -> Void) -> UIBarButtonItem {
        .custom(image: Asset.commonClose.image, completion)
    }
    static func close(_ viewController: UIViewController, _ completion: (() -> Void)? = nil) -> UIBarButtonItem {
        .close { [unowned viewController] in
            viewController.dismiss(animated: true)
            completion?()
        }
    }
    static func info(_ completion: @escaping () -> Void) -> UIBarButtonItem {
        .custom(image: Asset.commonInfo.image, completion)
    }
}