Display_D_HP/TeamAAS-VM/Services/ShiftWatcherService.cs

using Prism.Events;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using TeamAAS_VP.Core;
using TeamAAS_VP.Events;
using TeamAAS_VP.Models;

namespace TeamAAS_VP.Services
{
    public class ShiftWatcherService
    {
        private readonly IEventAggregator _eventAggregator;
        private Timer _timer;
        private string _lastShift;
        private WorkShift workShift;

        public ShiftWatcherService(IEventAggregator eventAggregator)
        {
            this._eventAggregator = eventAggregator;
        }

        public void Start()
        {
            // 中文注释：每秒检测一次
            //_timer = new Timer(_ => CheckShift(), null, 0, 1000);
            //try
            //{
            //    this.workShift = FileHelper.ReadJsonFile<WorkShift>(FilePath.WorkShiftParamPath);
            //}
            //catch (Exception)
            //{ }
            //_eventAggregator.GetEvent<WorkShiftUpdateNotification>().Subscribe((p) =>
            //{
            //    this.workShift = p;
            //});
        }

        private void CheckShift()
        {
            DateTime dateTimeDayShift = DateTime.Now;
            DateTime dateTimeNightShift = DateTime.Now;
            if (workShift==null)
            {
                return;
            }
            try
            {
                dateTimeDayShift = DateTime.Parse(workShift.DayShift);
                dateTimeNightShift = DateTime.Parse(workShift.NightShift);
            }
            catch
            {
            }
            string currentShift =
                (DateTime.Now.Hour >= 8 && DateTime.Now.Hour < 20) ? "Day" : "Night";

            if (_lastShift == null)
            {
                _lastShift = currentShift;
                return;
            }

            if (_lastShift != currentShift)
            {
                _lastShift = currentShift;

                // 只负责“通知”，不要弹窗
                _ = App.Current.Dispatcher.BeginInvoke(new Action(() =>
                {
                    _eventAggregator.GetEvent<WorkShiftChangedNotification>().Publish();
                }));

            }
        }
    }
}