增加工单模块

OrderSupportTicket/Services/ITicketRealtimeService.cs

@@ -0,0 +1,36 @@
+using OrderSupportTicket.Models;
+using System;
+using System.Threading.Tasks;
+
+namespace OrderSupportTicket.Services;
+
+/// <summary>
+/// 工单 SSE 实时通知服务。
+/// </summary>
+public interface ITicketRealtimeService : IDisposable
+{
+    /// <summary>
+    /// 收到工单变更摘要通知时触发。
+    /// </summary>
+    event EventHandler<TicketRealtimeNotificationEventArgs> NotificationReceived;
+
+    /// <summary>
+    /// SSE 连接状态变化时触发。
+    /// </summary>
+    event EventHandler<TicketRealtimeStateChangedEventArgs> StateChanged;
+
+    /// <summary>
+    /// 当前 SSE 连接状态。
+    /// </summary>
+    TicketRealtimeState State { get; }
+
+    /// <summary>
+    /// 使用指定工单参数建立 SSE 连接。
+    /// </summary>
+    void Start(TicketClientOptions options);
+
+    /// <summary>
+    /// 停止 SSE 连接。
+    /// </summary>
+    Task StopAsync();
+}