添加项目文件。

2025-09-29 13:48:36 +08:00
parent f61e922f0c
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+// Copyright (c) 2022-Now 少林寺驻北固山办事处大神父王喇嘛
+// 
+// SimpleAdmin 基于 Apache License Version 2.0 协议发布，可用于商业项目，但必须遵守以下补充条款:
+// 1.请不要删除和修改根目录下的LICENSE文件。
+// 2.请不要删除和修改SimpleAdmin源码头部的版权声明。
+// 3.分发源码时候，请注明软件出处 https://gitee.com/dotnetmoyu/SimpleAdmin
+// 4.基于本软件的作品，只能使用 SimpleAdmin 作为后台服务，除外情况不可商用且不允许二次分发或开源。
+// 5.请不得将本软件应用于危害国家安全、荣誉和利益的行为，不能以任何形式用于非法为目的的行为。
+// 6.任何基于本软件而产生的一切法律纠纷和责任，均于我司无关。
+
+using Microsoft.Extensions.Options;
+
+namespace SimpleAdmin.System;
+
+/// <summary>
+/// 通知事件总线
+/// </summary>
+public class NoticeEventSubscriber : IEventSubscriber, ISingleton
+{
+    private readonly ISimpleCacheService _simpleCacheService;
+
+    private readonly IServiceScopeFactory _scopeFactory;
+    private readonly bool _useMessageCenter;
+    private readonly SqlSugarScope _db;
+
+    public NoticeEventSubscriber(ISimpleCacheService simpleCacheService, IServiceScopeFactory scopeFactory,
+        IOptionsMonitor<SystemSettingsOptions> options)
+    {
+        _db = DbContext.DB;
+        _simpleCacheService = simpleCacheService;
+        _scopeFactory = scopeFactory;
+        _useMessageCenter = options.CurrentValue.UseMessageCenter;
+    }
+
+    /// <summary>
+    /// 通知用户下线事件
+    /// </summary>
+    /// <param name="context"></param>
+    /// <returns></returns>
+    [EventSubscribe(EventSubscriberConst.USER_LOGIN_OUT)]
+    public async Task UserLoginOut(EventHandlerExecutingContext context)
+    {
+        var loginEvent = (UserLoginOutEvent)context.Source.Payload;//获取参数
+        //客户端ID列表
+        var clientIds = new List<string>();
+        //遍历token列表获取客户端ID列表
+        loginEvent.TokenInfos.ForEach(it =>
+        {
+            clientIds.AddRange(it.ClientIds);
+        });
+    }
+
+    /// <summary>
+    /// 有新的消息
+    /// </summary>
+    /// <param name="context"></param>
+    /// <returns></returns>
+    [EventSubscribe(EventSubscriberConst.NEW_MESSAGE)]
+    public async Task NewMessage(EventHandlerExecutingContext context)
+    {
+        var newMessageEvent = (NewMessageEvent)context.Source.Payload;//获取参数
+        var messageId = newMessageEvent.Id;
+        //如果启用了通知中心
+        if (_useMessageCenter)
+        {
+            if (newMessageEvent.SendWay == SysDictConst.SEND_WAY_NOW)
+            {
+                //立即发送
+                await SendMessage(messageId);
+            }
+            else
+            {
+                //延迟发送
+                var sendTime = newMessageEvent.SendTime;
+                //计算延迟时间
+                var delay = (int)(sendTime - DateTime.Now).TotalSeconds;
+                if (delay > 0)
+                {
+                    await SendMessage(messageId, delay);
+                }
+                else
+                {
+                    await SendMessage(messageId);
+                }
+            }
+        }
+    }
+
+    /// <summary>
+    /// 发送消息
+    /// </summary>
+    /// <param name="messageId">消息id</param>
+    /// <param name="delay">延迟</param>
+    private async Task SendMessage(long messageId, int delay = 0)
+    {
+        _simpleCacheService.AddDelayQueue(CacheConst.CACHE_NOTIFICATION, messageId, delay);
+    }
+
+    /// <summary>
+    /// 获取服务
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    /// <returns></returns>
+    private T GetService<T>() where T : class, new()
+    {
+        // 创建新的作用域
+        using var scope = _scopeFactory.CreateScope();
+        return scope.ServiceProvider.GetRequiredService<T>();
+    }
+}