TuanCanAPP_iOS1.0/ADHTuanCan/Class/Category/VC/TabBar/BaseTabbarController.swift

//
//  BaseTabbarController.swift
//  ADHTuanCan
//
//  Created by 敖德亨 on 2023/9/30.
//

import UIKit
import SwiftyUserDefaults

class BaseTabbarController: UITabBarController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupChildControllers()
        tabBar.isTranslucent = false
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
}
    //extension 类似于OC中的分类，在Swift中还可以用来切分代码块
    //可以把相近功能的函数，放在一个extension中
    //注意：和OC的分类一样，extension中不能定义属性
    //MARK: -设置界面
extension BaseTabbarController {
    
    /// 设置所有子控制器
    func setupChildControllers(){
        var array = [["clsName":"HomeViewController","title":LanguagesUtil.createTextBy(Ctext: "首页", Etext: "Home"),"imageName":"首页"],["clsName":"HomeSecondViewController","title":LanguagesUtil.createTextBy(Ctext: "普团", Etext: "General Home"),"imageName":"普团"],["clsName":"OrderManagerVC","title":LanguagesUtil.createTextBy(Ctext: "订单", Etext: "Order"),"imageName":"订单"],["clsName":"MyViewController","title":LanguagesUtil.createTextBy(Ctext: "我的", Etext: "My"),"imageName":"我的"]
                    ]
        
        if  Defaults[\.userType] === 1{
            array = [["clsName":"HomeSecondViewController","title":LanguagesUtil.createTextBy(Ctext: "普团", Etext: "General Home"),"imageName":"普团"],
                ["clsName":"OrderManagerVC","title":LanguagesUtil.createTextBy(Ctext: "订单", Etext: "Order"),"imageName":"订单"],
                ["clsName":"MyViewController","title":LanguagesUtil.createTextBy(Ctext: "我的", Etext: "My"),"imageName":"我的"]
            ]
        }
        
//        let array = vcList
        var arrayM = [UIViewController]()
        
        for dict in array {
            
            arrayM.append(controller(dict: dict))
        }
        ///Use of unresolved identifier 'viewControllers'
        viewControllers = arrayM
        
        //tabbar选中背景图重新调整大小
        var imageName = "tabbar_selectedBackImage"
   
        tabBar.selectionIndicatorImage = tabBarSelecedBackImage(imageName: imageName, imageSize: CGSize(width: kSCREEN_WIDTH/CGFloat((viewControllers?.count)!), height: kTabBarHeight))
        
        tabBar.barTintColor = UIColor.white
        
    }
    
    /// 使用字典创建一个子控制器
    ///
    /// - Parameter dict: 信息字典
    /// - Returns: 子视图控制器
    private func controller(dict: [String: String])->UIViewController{
        
        //1,取得字典内容
        //guard语句判断其后的表达式布尔值为false时，才会执行之后代码块里的代码，如果为true，则跳过整个guard语句
        var namespace = Bundle.main.infoDictionary!["CFBundleExecutable"] as? String
        guard
            let clsName = dict["clsName"],
            let title = dict["title"],
            let imageName = dict["imageName"],
            //命名空间 项目的名字 + "." + "类名"
            let anyClass = NSClassFromString(namespace! + "." + clsName) as? UIViewController.Type
        else{
            return UIViewController()
        }
        
        
        //2.创建视图控制器
        let vc = anyClass.init()
        
        vc.title = title
        //3.设置图像
        vc.tabBarItem.image = UIImage(named:imageName + "未选中")?.withRenderingMode(.alwaysOriginal)
        vc.tabBarItem.selectedImage = UIImage(named: imageName + "选中")?.withRenderingMode(.alwaysOriginal)
        //4.设置tabBar的标题字体(大小)
//        vc.tabBarItem.setTitleTextAttributes([NSAttributedString.Key.foregroundColor : UIColor.white], for: UIControl.State.normal)
        vc.tabBarItem.setTitleTextAttributes([NSAttributedString.Key.foregroundColor : kThemeColor], for: UIControl.State.highlighted)
        //系统默认是12号字，修改字体大小，要设置Normal的字体大小
        //vc.tabBarItem.setTitleTextAttributes([NSAttributedStringKey.font : UIFont.systemFont(ofSize: 12)], for: .normal)
        //5.设置tabbarItem选中背景图
        //实例化导航控制器的时候，会调用重载的push方法 将rootVC进行压栈
        let nav = ADHBaseNavigationController(rootViewController: vc)
        
        return nav
        
    }
    func tabBarSelecedBackImage(imageName:String,imageSize:CGSize) ->  UIImage {
        let originalImage = UIImage(named: imageName)
        let rect : CGRect = CGRect(x: 0, y: 0, width: imageSize.width, height: imageSize.height)
        UIGraphicsBeginImageContext(rect.size)
        originalImage?.draw(in: rect)
        let image : UIImage = UIGraphicsGetImageFromCurrentImageContext()!
        
        UIGraphicsEndImageContext()
        
        return image
    }
}