Handling notifications event and rendering them through controller

BTCPayServer/Controllers/NotificationsController.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Claims;
+using System.Text;
+using System.Threading.Tasks;
+using BTCPayServer.Events.Notifications;
+using BTCPayServer.Filters;
+using BTCPayServer.HostedServices;
+using BTCPayServer.Models.NotificationViewModels;
+using BTCPayServer.Security;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace BTCPayServer.Controllers
+{
+    [BitpayAPIConstraint(false)]
+    [Authorize(AuthenticationSchemes = AuthenticationSchemes.Cookie)]
+    public class NotificationsController : Controller
+    {
+        private readonly EventAggregator _eventAggregator;
+
+        public NotificationsController(EventAggregator eventAggregator)
+        {
+            _eventAggregator = eventAggregator;
+        }
+
+        [HttpGet]
+        public async Task<IActionResult> Index(int skip = 0, int count = 50, int timezoneOffset = 0)
+        {
+            var claimWithId = User.Claims.SingleOrDefault(a => a.Type == ClaimTypes.NameIdentifier);
+            if (claimWithId == null)
+                return RedirectToAction("Index", "Home");
+
+            var userId = claimWithId.Value;
+            var model = new IndexViewModel()
+            {
+                Items = NotificationDbSaver.Notif
+                    .Skip(skip).Take(count)
+                    .Where(a => a.ApplicationUserId == userId)
+                    .Select(a => a.ViewModel())
+                    .ToList()
+            };
+            model.Items = model.Items.OrderByDescending(a => a.Created).ToList();
+            return View(model);
+        }
+
+        [HttpGet]
+        public async Task<IActionResult> Generate()
+        {
+            _eventAggregator.NoticeNewVersion("1.0.4.4");
+            // waiting for event handler to catch up
+            await Task.Delay(1000);
+            return RedirectToAction(nameof(Index));
+        }
+    }
+}