初步添加事件服务

DMS.WPF/Services/DeviceMonitoringService.cs

@@ -0,0 +1,74 @@
+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;
+    }
+}

DMS.WPF/Services/EventService.cs

@@ -0,0 +1,68 @@
+using System;
+using DMS.WPF.Events;
+using DMS.WPF.Interfaces;
+
+namespace DMS.WPF.Services;
+
+/// <summary>
+/// 事件服务实现类，用于统一管理应用程序中的各种事件
+/// </summary>
+public class EventService : IEventService
+{
+    #region 设备事件
+
+    /// <summary>
+    /// 设备状态改变事件
+    /// </summary>
+    public event EventHandler<DeviceActiveChangedEventArgs> DeviceStatusChanged;
+
+    /// <summary>
+    /// 触发设备状态改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">设备状态改变事件参数</param>
+    public void RaiseDeviceStatusChanged(object sender, DeviceActiveChangedEventArgs e)
+    {
+        DeviceStatusChanged?.Invoke(sender, e);
+    }
+
+    #endregion
+
+    #region 变量事件
+
+    /// <summary>
+    /// 变量值改变事件
+    /// </summary>
+    public event EventHandler<VariableValueChangedEventArgs> VariableValueChanged;
+
+    /// <summary>
+    /// 触发变量值改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">变量值改变事件参数</param>
+    public void RaiseVariableValueChanged(object sender, VariableValueChangedEventArgs e)
+    {
+        VariableValueChanged?.Invoke(sender, e);
+    }
+
+    #endregion
+
+    #region MQTT事件
+
+    /// <summary>
+    /// MQTT连接状态改变事件
+    /// </summary>
+    public event EventHandler<MqttConnectionChangedEventArgs> MqttConnectionChanged;
+
+    /// <summary>
+    /// 触发MQTT连接状态改变事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">MQTT连接状态改变事件参数</param>
+    public void RaiseMqttConnectionChanged(object sender, MqttConnectionChangedEventArgs e)
+    {
+        MqttConnectionChanged?.Invoke(sender, e);
+    }
+
+    #endregion
+}

DMS.WPF/Services/WPFDataService.cs

@@ -44,6 +44,11 @@ public class WPFDataService : IWPFDataService
     /// 日志数据服务。
     /// </summary>
     public ILogDataService LogDataService { get; }
+    
+    /// <summary>
+    /// 事件服务。
+    /// </summary>
+    public IEventService EventService { get; }
 
     /// <summary>
     /// WPFDataService 构造函数。
@@ -55,7 +60,9 @@ public class WPFDataService : IWPFDataService
         IVariableDataService variableDataService,
         IMenuDataService menuDataService,
         IMqttDataService mqttDataService,
-        ILogDataService logDataService, IVariableTableDataService variableTableDataService)
+        ILogDataService logDataService, 
+        IVariableTableDataService variableTableDataService,
+        IEventService eventService)
     {
         _mapper = mapper;
         _appDataCenterService = appDataCenterService;
@@ -65,6 +72,6 @@ public class WPFDataService : IWPFDataService
         MqttDataService = mqttDataService;
         LogDataService = logDataService;
         VariableTableDataService = variableTableDataService;
-
+        EventService = eventService;
     }
 }