сделал отправку на почту и присваивание ачивки за ранее

CyberBoom/Controllers/UserWriteToMetingController.cs

@@ -2,7 +2,10 @@ using Mapster;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
-
+using Hangfire;
+using MailKit.Net.Smtp;
+using MailKit.Security;
+using MimeKit;
 namespace CyberBoom.Controllers;
 
 [ApiController]
@@ -32,16 +35,19 @@ public class UserWriteToMetingController : ControllerBase
 
         var user = await _applicationContext.Users.FirstAsync(u => u.Id == write.UserId);
 
-        var newStats = await _applicationContext.GetStatistic(write.UserId);
+        
+        var delay = meeting.Time - DateTime.UtcNow - new TimeSpan(2, 0, 0);
+        
+        BackgroundJob.Schedule<IEmailService>((_emailService) => _emailService.SendEmailAsync(user.Email!, "Вход в Муза", $"Здравcтвуйте. У вас мероприятие через 2 часа под названием {meeting.Title}"), delay); // за начало до встречи
 
-        var achievments = await WriteAchievment(newStats, write.UserId);
+        BackgroundJob.Schedule<ApplicationContext>((context) => AfterEnd(write.UserId, context), meeting.Time - DateTime.UtcNow); // за начало до встречи
 
         await _applicationContext.SaveChangesAsync();
 
-        return Ok(new { dbWr.Id, Achievments = achievments });
+        return Ok(new { dbWr.Id});
     }
 
-    async Task<List<Achievment>> WriteAchievment(StatsData stats, string userId)
+    async Task<List<Achievment>> WriteAchievment(StatsData stats, string userId, ApplicationContext context)
     {
         List<Achievment> achievments = new List<Achievment>();
         if (stats.Count > 0 && stats.Count % 5 == 0)
@@ -54,8 +60,9 @@ public class UserWriteToMetingController : ControllerBase
                 UserId = userId
             };
             achievments.Add(achievment);
-            await _applicationContext.Achievments.AddAsync(achievment);
+            await context.Achievments.AddAsync(achievment);
         }
+        
         var achievedTags = stats.StatsByTag.Where(st => st.Count > 0 && st.Count % 5 == 0);
         if (achievedTags.Count() > 0 && stats.Count % 5 == 0)
         {
@@ -69,7 +76,7 @@ public class UserWriteToMetingController : ControllerBase
                     UserId = userId
                 };
                 achievments.Add(achievment);
-                await _applicationContext.Achievments.AddAsync(achievment);
+                await context.Achievments.AddAsync(achievment);
             }
         }
         return achievments;
@@ -93,6 +100,16 @@ public class UserWriteToMetingController : ControllerBase
         return Ok();
     }
 
+
+    async Task AfterEnd(string userId, ApplicationContext context)
+    {
+        var newStats = await context.GetStatistic(userId);
+
+        await WriteAchievment(newStats, userId, context);
+
+        await context.SaveChangesAsync();
+    }
+
     [HttpGet]
     public async Task<IActionResult> Get(string id)
     {
@@ -112,3 +129,45 @@ public class UserWriteToMetingController : ControllerBase
         return Ok(reviews);
     }
 }
+
+
+
+public interface IEmailService
+{
+    public Task SendEmailAsync(string email, string subject, string message);
+}
+
+public class EmailService : IEmailService
+{
+    private readonly IConfiguration _configuration;
+    private ILogger<EmailService> _logger;
+
+    public EmailService(IConfiguration configuration, ILogger<EmailService> logger)
+    {
+        _configuration = configuration;
+        _logger = logger;
+    }
+
+    public async Task SendEmailAsync(string email, string subject, string message)
+    {
+        var emailMessage = new MimeMessage();
+
+        emailMessage.From.Add(new MailboxAddress(_configuration["Email:Name"], _configuration["Email:Address"]));
+        emailMessage.To.Add(new MailboxAddress("", email));
+        emailMessage.Subject = subject;
+        emailMessage.Body = new TextPart(MimeKit.Text.TextFormat.Html)
+        {
+            Text = message
+        };
+
+        using var client = new SmtpClient();
+        client.Timeout = 15000;
+        await client.ConnectAsync(_configuration["Email:Host"], int.Parse(_configuration["Email:Port"]!), SecureSocketOptions.None);
+        await client.AuthenticateAsync(_configuration["Email:Address"], _configuration["Email:Password"]);
+        await client.SendAsync(emailMessage);
+        
+        _logger.LogInformation("Письмо отправлено на почту {Email}", email);
+        
+        await client.DisconnectAsync(true);
+    }
+}