//
//  UINavigationBar+FixSpace.swift
//  PaiaiUIKit
//
//  Created by ffib on 2019/1/15.
//  Copyright © 2019 yb. All rights reserved.
//

import UIKit

@available(iOS 11.0, *)
extension UINavigationBar {
    static func swizzedMethod()  {
        let originalSelector = #selector(UINavigationBar.layoutSubviews)
        let swizzledSelector = #selector(UINavigationBar.swizzle_layoutSubviews)
        
        guard let originalMethod = class_getInstanceMethod(self, originalSelector),
        let swizzledMethod = class_getInstanceMethod(self, swizzledSelector) else { return }
        
        let didAddMethod = class_addMethod(self, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod))
        
        if didAddMethod {
            class_replaceMethod(self, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod))
        } else {
            method_exchangeImplementations(originalMethod, swizzledMethod)
        }
    }
    
    @objc func swizzle_layoutSubviews() {
        swizzle_layoutSubviews()
        
        layoutMargins = .zero
        for view in subviews {
            guard  NSStringFromClass(view.classForCoder).contains("ContentView") else { continue }
            view.layoutMargins = UIEdgeInsets.zero
            break
        }
    }
}