using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
using System.Windows;
using System.Windows.Threading;

namespace CapMachine.Wpf.Models
{
    /// <summary>
    /// 程序运行时间统计
    /// </summary>
    public class ProRunTimeCalc : BindableBase
    {
        public ProRunTimeCalc()
        {
            //秒触发一次
            CycleTimer = new System.Timers.Timer(1000);
            CycleTimer.Elapsed += ProRunCycleAction;
            CycleTimer.AutoReset = true;
            CycleTimer.Enabled = true;

        }

        /// <summary>
        /// 程序运行时间周期统计
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        /// <exception cref="NotImplementedException"></exception>
        private void ProRunCycleAction(object? sender, ElapsedEventArgs e)
        {
            CycleTimer.Stop();

            Application.Current.Dispatcher.BeginInvoke(new Action(() =>
            {
                CalcTime();
            }));

            CycleTimer.Start();
        }

        /// <summary>
        /// 统计时间
        /// </summary>
        private void CalcTime()
        {
            ProEndDt = DateTime.Now;
            
            ProRunTimeStr = ConvertSecToDHMS((int)Math.Round((ProEndDt - ProStartDt).TotalSeconds - PauseTotalSecTime));
        }

        private string ConvertSecToDHMS(int totalSeconds)
        {
            // 驗證非負（可根據需求調整）
            if (totalSeconds < 0)
                return "00天:00时:00分:00秒";

            int days = totalSeconds / 86400;          // 1天 = 86400秒
            int remainingSeconds = totalSeconds % 86400;

            int hours = remainingSeconds / 3600;      // 1小時 = 3600秒
            remainingSeconds %= 3600;

            int minutes = remainingSeconds / 60;      // 1分鐘 = 60秒
            int seconds = remainingSeconds % 60;

            // 格式化輸出，確保時、分、秒為兩位數
            return $"{days}天:{hours:D2}时:{minutes:D2}分:{seconds:D2}秒";
        }

        /// <summary>
        /// 开始计时
        /// </summary>
        public void StartProRunTime()
        {
            ProStartDt = DateTime.Now;
            CycleTimer.Start();
            //暂停时间清零，可能是多次开始执行程序，导致PauseTotalSecTime残留到下一个程序计时中
            PauseTotalSecTime = 0;
        }

        /// <summary>
        /// 暂停计时
        /// </summary>
        public void PauseProRunTime()
        {
            CycleTimer.Stop();
        }

        /// <summary>
        /// 继续计时
        /// </summary>
        public void ContinueProRunTime()
        {
            CycleTimer.Start();
        }

        /// <summary>
        /// 结束计时
        /// </summary>
        public void EndProRunTime()
        {
            CycleTimer.Stop();
            CalcTime();
            //暂停时间清零，可能是多次开始执行程序，导致PauseTotalSecTime残留到下一个程序计时中
            PauseTotalSecTime = 0;
        }

        /// <summary>
        /// 周期定时器
        /// </summary>
        private System.Timers.Timer CycleTimer { get; set; }


        /// <summary>
        /// 程序开始的时间
        /// </summary>
        public DateTime ProStartDt { get; set; }

        /// <summary>
        /// 程序结束的时间
        /// </summary>
        public DateTime ProEndDt { get; set; }


        private string? _ProRunTimeStr;
        /// <summary>
        /// 程序运行时间字符串
        /// </summary>
        public string? ProRunTimeStr
        {
            get { return _ProRunTimeStr; }
            set { _ProRunTimeStr = value; RaisePropertyChanged(); }
        }

        /// <summary>
        /// 全部的暂停的时间
        /// 可能暂停多次
        /// </summary>
        public int PauseTotalSecTime { get; set; }


    }
}