//
//  CountDownManager.swift
//  QuickSearchLocation
//
//  Created by Destiny on 2025/9/24.
//

import UIKit


class QSLCountdownManager {
    static let shared = QSLCountdownManager()
    private var timer: Timer?
    var selectGood: QSLGoodModel?{
        didSet{
            if(oldValue != nil){
                NotificationCenter.default.post(
                    name: Notification.Name("QSLHomeRefreshCouponViewNoti"),
                    object: nil,
                    userInfo: nil
                )
            }
        }
    }
    var remainingSeconds: Int = 900 * 1000 // 15分钟 = 900秒
    var updateHandler: ((String) -> Void)?
    var updateHandler1: ((String) -> Void)?
    
    var finishHandler: (() -> Void)?
    
    func startCountdown() {
        timer?.invalidate()
        timer = nil
        if(selectGood == nil){
            return
        }
        remainingSeconds = 900 * 1000
        timer = Timer.scheduledTimer(timeInterval: 0.001, target: self, selector: #selector(updateCountdown), userInfo: nil, repeats: true)
        RunLoop.current.add(timer!, forMode: .common)
    }
    
    func checkIsCountDown() -> Bool{
        if let curTimer = timer {
            return true
        }else{
            return false
        }
    }
    
    func stopCountdown() {
        finishHandler?()
        timer?.invalidate()
        timer = nil
    }
    
    @objc private func updateCountdown() {
        remainingSeconds -= 1
        if remainingSeconds <= 0 {
            stopCountdown()
        }
        
        let totalSeconds = remainingSeconds / 1000
        let minutes = totalSeconds / 60
        let seconds = totalSeconds % 60
        let milliseconds = remainingSeconds % 1000
        
        // 格式：MM:SS:SSS（例如 "14:59:500"）
        let timeString = String(format: "%02d : %02d : %03d", minutes, seconds, milliseconds)
        updateHandler?(timeString)
        updateHandler1?(timeString)
    }
    
    deinit {
        stopCountdown()
    }
}