初步添加事件服务

DMS.WPF/Services/DeviceMonitoringService.cs

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+using System;
+using DMS.WPF.Events;
+using DMS.WPF.Interfaces;
+using Microsoft.Extensions.Logging;
+
+namespace DMS.WPF.Services;
+
+/// <summary>
+/// 设备监控服务，用于监听设备状态改变事件并进行相应处理
+/// </summary>
+public class DeviceMonitoringService
+{
+    private readonly ILogger<DeviceMonitoringService> _logger;
+    private readonly IEventService _eventService;
+    private readonly INotificationService _notificationService;
+
+    /// <summary>
+    /// 初始化DeviceMonitoringService类的新实例
+    /// </summary>
+    /// <param name="logger">日志服务</param>
+    /// <param name="eventService">事件服务</param>
+    /// <param name="notificationService">通知服务</param>
+    public DeviceMonitoringService(
+        ILogger<DeviceMonitoringService> logger,
+        IEventService eventService,
+        INotificationService notificationService)
+    {
+        _logger = logger;
+        _eventService = eventService;
+        _notificationService = notificationService;
+
+        // 订阅设备状态改变事件
+        _eventService.DeviceStatusChanged += OnDeviceStatusChanged;
+    }
+
+    /// <summary>
+    /// 处理设备状态改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">设备状态改变事件参数</param>
+    private void OnDeviceStatusChanged(object sender, DeviceActiveChangedEventArgs e)
+    {
+        try
+        {
+            // 记录设备状态改变日志
+            _logger.LogInformation($"设备 {e.DeviceName}(ID: {e.DeviceId}) 状态改变: {e.OldStatus} -> {e.NewStatus}");
+
+            // 根据设备状态改变发送通知
+            string message = e.NewStatus 
+                ? $"设备 {e.DeviceName} 已启动" 
+                : $"设备 {e.DeviceName} 已停止";
+
+            _notificationService.ShowInfo(message);
+
+            // 在这里可以添加更多处理逻辑，例如：
+            // 1. 更新数据库中的设备状态历史记录
+            // 2. 发送邮件或短信通知
+            // 3. 触发其他相关操作
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, $"处理设备 {e.DeviceName} 状态改变事件时发生错误");
+        }
+    }
+
+    /// <summary>
+    /// 释放资源
+    /// </summary>
+    public void Dispose()
+    {
+        // 取消订阅事件
+        _eventService.DeviceStatusChanged -= OnDeviceStatusChanged;
+    }
+}