wip: 🧠 初步的框架

src/backend/NetAdmin.SysComponent.Host/Subscribers/EmailCodeSender.cs

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+using NetAdmin.Domain.Dto.Sys.VerifyCode;
+using NetAdmin.Domain.Enums.Sys;
+using NetAdmin.Domain.Events.Sys;
+using NetAdmin.SysComponent.Application.Services.Sys.Dependency;
+
+namespace NetAdmin.SysComponent.Host.Subscribers;
+
+/// <summary>
+///     邮件验证码发送器
+/// </summary>
+public sealed class EmailCodeSender : IEventSubscriber
+{
+    private readonly ILogger<EmailCodeSender> _logger;
+
+    /// <summary>
+    ///     Initializes a new instance of the <see cref="EmailCodeSender" /> class.
+    /// </summary>
+    public EmailCodeSender(ILogger<EmailCodeSender> logger)
+    {
+        _logger = logger;
+    }
+
+    /// <summary>
+    ///     发送邮件
+    /// </summary>
+    [EventSubscribe(nameof(VerifyCodeCreatedEvent))]
+    public async Task SendEmailAsync(EventHandlerExecutingContext context)
+    {
+        if (context.Source is not VerifyCodeCreatedEvent verifyCodeCreatedEvent ||
+            verifyCodeCreatedEvent.Data.DeviceType != VerifyCodeDeviceTypes.Email) {
+            return;
+        }
+
+        // 发送...
+        var verifyCodeService = App.GetService<IVerifyCodeService>();
+        _ = await verifyCodeService.UpdateAsync(
+            verifyCodeCreatedEvent.Data.Adapt<UpdateVerifyCodeReq>() with { Status = VerifyCodeStatues.Sent });
+        _logger.Info($"{nameof(IVerifyCodeService)}.{nameof(IVerifyCodeService.UpdateAsync)} {Ln.已完成}");
+    }
+}