//
//  NotificationTopBarWindow.swift
//  MTP2_iOS
//
//  Created by Handy_Cao on 2019/1/22.
//  Copyright © 2019 Muchinfo. All rights reserved.
//

import UIKit

class NotificationTopBarWindow: UIWindow {
    
    // MARK: - 属性列表
    
    /// 显示信息内容
    private var textLabel: UILabel!
    /// 轻扫手势，用于用户手动隐藏
    private var swipGestureRecognizer: UISwipeGestureRecognizer!
    /// 是否正在显示模式
    var isShowing: Bool
    
    // MARK: - 初始化&&轻扫方法实现
    init() {
        textLabel = UILabel(frame: CGRect(x: 0, y: kStatusBarHeight, width: kScreenWidth, height: 44))
        textLabel.textAlignment = .center
        textLabel.backgroundColor = .clear
        textLabel.textColor = .white
        textLabel.font = UIFont(name: "Helvetica", size: 14)
        isShowing = false
        super.init(frame: CGRect(x: 0, y: -NaviHeight, width: kScreenWidth, height: NaviHeight))
        self.backgroundColor = UIColor(red: 1, green: 66.0/255.0, blue: 66.0/255.0, alpha: 1.0)
        self.windowLevel = .statusBar + 1
        self.clipsToBounds = true
        addSubview(textLabel)
        swipGestureRecognizer = UISwipeGestureRecognizer(target: self, action: #selector(swipGestureRecognizer(sender:)))
        swipGestureRecognizer.direction = .up
        isHidden = true
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    @objc private func swipGestureRecognizer(sender: UISwipeGestureRecognizer) {
        dismiss()
    }
    
    // MARK: - 显示相关
    /// 在app顶部显示提示信息
    ///
    /// - Parameters:
    ///   - message: 提示信息内容
    ///   - delayTime: 停留时间，如果不填，则不会自动消失
    func addMessage(_ message: String, delay delayTime: TimeInterval? = nil) {
        
        func completeBlock(delay delayTime: TimeInterval? = nil) {
            
            if let delayTime = delayTime {
                DispatchQueue.main.asyncAfter(deadline: .now() + delayTime) {
                    // 隐藏
                    self.dismiss()
                }
            }
        }
        
        dPrint("[\(#function)]:\(message)")
        
        if !isShowing {
            textLabel.text = message
            isHidden = false
            isShowing = true
            addGestureRecognizer(swipGestureRecognizer)
            UIView.animate(withDuration: 0.3, animations: {
                self.frame = CGRect(x: 0, y: 0, width: kScreenWidth, height: NaviHeight)
            }) { (_) in
                completeBlock(delay: delayTime)
            }
        } else {
            DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
                self.textLabel.text = message
                completeBlock(delay: delayTime)
            }
        }
    }
    
    /// 隐藏
    func dismiss() {
        isShowing = false
        UIView.animate(withDuration: 0.3, animations: {
            self.frame = CGRect(x: 0, y: -NaviHeight, width: kScreenWidth, height: NaviHeight)
        }) { (_) in
            self.isHidden = true
            self.removeGestureRecognizer(self.swipGestureRecognizer)
        }
    }
}