//
//  MCareUtil.swift
//  mcare-demo-InHouse
//
//  Created by SungWon Lee on 27/10/2018.
//  Copyright © 2018 LemonHealthcare. All rights reserved.
//

import Foundation
import MCareFramework

class MCareUtil {
    static let shared = MCareUtil()
    
    private init() {}
    
    // 커스텀 알림창을 띄워준다.(중복해서 띄워주기 싫은 알림창은 Tag를 지정)
    func showCustomAlert(viewTag: Int = 0, title: String?, message: String, firstBtnTitle: String, secondBtnTitle: String?, titleIcon: String?, firstBtnAction: (() -> Void)?, secondBtnAction: (() -> Void)?) {
        DispatchQueue.main.async {
            // viewTag가 0이 아니고 뷰가 떠있으면 다시 띄워주지 않음
            if viewTag != 0 && self.isViewWithTag(tag: viewTag) {
                return
            }
            
            var alertTitle: String? = title
            if alertTitle == nil {
                alertTitle = Bundle.main.object(forInfoDictionaryKey: "CFBundleDisplayName") as? String ?? ""
            }
            let alertView: MCareCustomAlerview = MCareCustomAlerview(viewTag: viewTag, title: alertTitle, message: message, firstBtnTitle: firstBtnTitle, secondBtnTitle: secondBtnTitle, titleIcon: titleIcon, firstBtnAction: { () -> Void in
                // firstbutton click handler
                if let _firstButtonAction = firstBtnAction {
                    _firstButtonAction()
                }
                
            }, secondBtnAction: { () -> Void in
                // handler
                if let _secondButtonAction = secondBtnAction {
                    _secondButtonAction()
                }
            })
            alertView.show()
        }
    }
    
    // 뷰 태크로 해당 뷰가 뷰 히어라키에 존재하는지 찾는다.
    func isViewWithTag(tag: Int) -> Bool {
    
        guard let topView = UIApplication.shared.keyWindow?.subviews[0] else {
            return false
        }
        
        var result: Bool = false
        for item in topView.subviews {
            if item.tag == tag {
                result = true
                break
            }
        }
        
        return result
    }
    
    //MARK: =최상위 ViewController 반환
    func topViewController() -> UIViewController? {
        
        let appDelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate
        
        guard var vc = appDelegate.window?.rootViewController else { return nil }
        
        while let presentedViewController = vc.presentedViewController {
            vc = presentedViewController
        }
        
        return vc
    }
    
    //MARK: =앱을 종료 처리
    func exitApplication(alertMessage: String?) {
        var alertMsg:String
        if let _alertMessage = alertMessage {
            alertMsg = _alertMessage + "\n" + NSLocalizedString("MCareExitMSG", comment: "앱이 종료됩니다.")
        }
        else {
            alertMsg = NSLocalizedString("MCareExitMSG", comment: "앱이 종료됩니다.")
        }
        
        let alertBtnTitle = NSLocalizedString("AlertOK", comment: "확인")
        
        showCustomAlert(title: nil, message: alertMsg, firstBtnTitle: alertBtnTitle, secondBtnTitle: nil, titleIcon: MCarePlusConstants.MCARE_ALERT_TITLE_ICON, firstBtnAction: { () -> Void in
            DispatchQueue.main.async {
                exit(0)
            }
        }, secondBtnAction: nil)
    }
    
}

extension Optional where Wrapped == String {
    var isNilOrEmpty: Bool {
        return self?.trimmingCharacters(in: .whitespaces).isEmpty ?? true
    }
}