Add simple update checker.

client/src/app/models/profile.model.ts

@@ -2,4 +2,6 @@ export class Profile {
   public provider: string;
   public userName: string;
   public expiration: Date;
+  public currentVersion: string;
+  public latestVersion: string;
 }

client/src/app/navbar/navbar.component.html

@@ -38,7 +38,7 @@
         </span>
         <span>Settings</span>
       </a>
-      <a class="navbar-item" *ngIf="profile" href="{{providerLink}}" target="_blank" rel="noopener">
+      <a class="navbar-item" *ngIf="profile" href="{{ providerLink }}" target="_blank" rel="noopener">
         <span class="icon">
           <i class="fas fa-euro-sign" aria-hidden="true"></i>
         </span>
@@ -61,3 +61,7 @@
     </div>
   </div>
 </nav>
+<div class="notification is-warning" *ngIf="profile.latestVersion && profile.currentVersion !== profile.latestVersion">
+  Version {{ profile.latestVersion }} of RealDebrid Client was found. You are currently on version
+  {{ profile.currentVersion }}.
+</div>

client/src/app/navbar/navbar.component.scss

@@ -1,3 +1,7 @@
 .no-premium {
   color: red;
 }
+
+.notification {
+  margin-top: 52px;
+}

server/RdtClient.Data/Models/Internal/Profile.cs

@@ -7,5 +7,7 @@ namespace RdtClient.Data.Models.Internal
         public String Provider { get; set; }
         public String UserName { get; set; }
         public DateTimeOffset? Expiration { get; set; }
+        public String CurrentVersion { get; set; }
+        public String LatestVersion { get; set; }
     }
 }

server/RdtClient.Service/Services/Torrents.cs

@@ -333,7 +333,9 @@ namespace RdtClient.Service.Services
             {
                 Provider = Settings.Get.Provider,
                 UserName = user.Username,
-                Expiration = user.Expiration
+                Expiration = user.Expiration,
+                CurrentVersion = UpdateChecker.CurrentVersion,
+                LatestVersion = UpdateChecker.LatestVersion
             };
 
             return profile;

server/RdtClient.Service/Services/UpdateChecker.cs

@@ -0,0 +1,77 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Reflection;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+
+namespace RdtClient.Service.Services
+{
+    public class UpdateChecker : BackgroundService
+    {
+        public static String CurrentVersion { get; set; }
+        public static String LatestVersion { get; set; }
+
+        private readonly ILogger<TaskRunner> _logger;
+
+        public UpdateChecker(ILogger<TaskRunner> logger)
+        {
+            _logger = logger;
+        }
+
+        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+        {
+            var version = Assembly.GetEntryAssembly()?.GetName().Version?.ToString();
+
+            CurrentVersion = $"v{version[..version.LastIndexOf(".")]}";
+
+            _logger.LogInformation($"UpdateChecker started, currently on version {CurrentVersion}.");
+
+            while (!stoppingToken.IsCancellationRequested)
+            {
+                try
+                {
+                    var httpClient = new HttpClient();
+                    httpClient.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("RdtClient", CurrentVersion));
+                    var response = await httpClient.GetStringAsync($"https://api.github.com/repos/rogerfar/rdt-client/tags?per_page=1", stoppingToken);
+
+                    var gitHubReleases = JsonConvert.DeserializeObject<List<GitHubReleasesResponse>>(response);
+
+                    if (gitHubReleases == null || gitHubReleases.Count == 0)
+                    {
+                        return;
+                    }
+
+                    var latestRelease = gitHubReleases.First().Name;
+
+                    if (latestRelease != CurrentVersion)
+                    {
+                        _logger.LogInformation($"New version found on GitHub: {latestRelease}");
+                    }
+
+                    LatestVersion = latestRelease;
+                }
+                catch (Exception ex)
+                {
+                    _logger.LogError(ex, "Unexpected error occurred in TorrentDownloadManager.Tick");
+                }
+
+                await Task.Delay(TimeSpan.FromHours(1), stoppingToken);
+            }
+
+            _logger.LogInformation("UpdateChecker stopped.");
+        }
+    }
+
+    public class GitHubReleasesResponse 
+    {
+        [JsonProperty("name")]
+        public String Name { get; set; }
+    }
+}

server/RdtClient.Web/Program.cs

@@ -112,6 +112,7 @@ namespace RdtClient.Web
                        .ConfigureServices((hostContext, services) =>
                        {
                            services.AddHostedService<TaskRunner>();
+                           services.AddHostedService<UpdateChecker>();
                        })
                        .ConfigureWebHostDefaults(webBuilder =>
                        {