//
//  NavigationController.swift
//  Lookfit
//
//  Created by lemo. on 2020/3/7.
//  Copyright © 2020 Sheldon. All rights reserved.
//

import UIKit

class NavigationController: UINavigationController {

    override func viewDidLoad() {
        super.viewDidLoad()
        LFLogs("init: \(type(of: self))")
        makeUI()
        // 手势代理
        self.interactivePopGestureRecognizer?.delegate = self
    }
    
    override var preferredStatusBarStyle: UIStatusBarStyle {
        let viewController = self.viewControllers.last as? ViewController
        let isLightStatusBar = viewController?.isLightStatusBar ?? false
        if #available(iOS 13.0, *) {
            return isLightStatusBar ? .lightContent : .darkContent
        } else {
            return isLightStatusBar ? .lightContent : .default
        }
    }
    
    func makeUI() {
        // 设置导航栏样式
        navigationBar.setBackgroundImage(UIImage.color(ThemeManager.commonBgColor), for: UIBarPosition.any, barMetrics: .default)
        navigationBar.shadowImage = UIImage()
        // 标题样式
        let bar = UINavigationBar.appearance()
        bar.titleTextAttributes = [
            NSAttributedString.Key.foregroundColor : ThemeManager.commonTextColor,
            NSAttributedString.Key.font: ThemeManager.navBarFont]
        // 分割线获取隐藏
        if let backgroundView = navigationBar.subviews.first {
            backgroundView.subviews.forEach { (view) in
                if view.height <= 1 {
                    view.isHidden = true
                }
            }
        }
        if #available(iOS 15, *) {
            let app = UINavigationBarAppearance.init()
            app.configureWithOpaqueBackground()  // 重置背景和阴影颜色
            app.titleTextAttributes = [
                NSAttributedString.Key.font: ThemeManager.navBarFont,
                NSAttributedString.Key.foregroundColor: ThemeManager.commonTextColor
            ]
            app.backgroundColor = ThemeManager.commonBgColor  // 设置导航栏背景色
            app.shadowImage = UIImage()  // 设置导航栏下边界分割线透明
            navigationBar.scrollEdgeAppearance = app  // 带scroll滑动的页面
            navigationBar.standardAppearance = app // 常规页面
        }
    }
    
    override func pushViewController(_ viewController: UIViewController, animated: Bool) {
        // 自定义返回按钮
        if children.count > 0, let vc = viewController as? ViewController {
            let leftItems = UIBarButtonItem.baseBarButtonItem(normalImg: "nav_back", highImg: "nav_back", title: vc.navigationTitle, target: self, action: #selector(clickBack))
            vc.navigationItem.leftBarButtonItem = leftItems
            vc.hidesBottomBarWhenPushed = true
        }
        super.pushViewController(viewController, animated: animated)
    }
    
    @objc func clickBack() {
        self.popViewController(animated: true)
    }
    
    deinit {
        LFLogs("deinit: \(type(of: self))")
    }
    
}

// MARK: - 手势处理
extension NavigationController: UIGestureRecognizerDelegate {
    /// 判断情况禁用手势
    func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        let isRootVC = self.viewControllers.count > 1
        return isRootVC
    }
    
    /// 点击屏幕停止编辑
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesBegan(touches, with: event)
        view.endEditing(true)
    }
}