From 65fee19105857b61078495f8a5aee1f8c7005f01 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Tue, 16 Jul 2013 15:42:12 -0400
Subject: [PATCH] support remote notifications

---
 .../Notifications/RemoteNotifications.cs      | 148 ++++++++++++++++++
 ...MediaBrowser.Server.Implementations.csproj |   1 +
 2 files changed, 149 insertions(+)
 create mode 100644 MediaBrowser.Server.Implementations/EntryPoints/Notifications/RemoteNotifications.cs

diff --git a/MediaBrowser.Server.Implementations/EntryPoints/Notifications/RemoteNotifications.cs b/MediaBrowser.Server.Implementations/EntryPoints/Notifications/RemoteNotifications.cs
new file mode 100644
index 000000000..7a824f991
--- /dev/null
+++ b/MediaBrowser.Server.Implementations/EntryPoints/Notifications/RemoteNotifications.cs
@@ -0,0 +1,148 @@
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Common.Net;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Notifications;
+using MediaBrowser.Controller.Plugins;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Notifications;
+using MediaBrowser.Model.Serialization;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Server.Implementations.EntryPoints.Notifications
+{
+    public class RemoteNotifications : IServerEntryPoint
+    {
+        private const string Url = "http://www.mb3admin.com/admin/service/MB3ServerNotifications.json";
+
+        private Timer _timer;
+        private readonly IHttpClient _httpClient;
+        private readonly IApplicationPaths _appPaths;
+        private readonly ILogger _logger;
+        private readonly IJsonSerializer _json;
+        private readonly INotificationsRepository _notificationsRepo;
+        private readonly IUserManager _userManager;
+
+        private readonly TimeSpan _frequency = TimeSpan.FromHours(12);
+        private readonly TimeSpan _maxAge = TimeSpan.FromDays(31);
+
+        public RemoteNotifications(IApplicationPaths appPaths, ILogger logger, IHttpClient httpClient, IJsonSerializer json, INotificationsRepository notificationsRepo, IUserManager userManager)
+        {
+            _appPaths = appPaths;
+            _logger = logger;
+            _httpClient = httpClient;
+            _json = json;
+            _notificationsRepo = notificationsRepo;
+            _userManager = userManager;
+        }
+
+        /// <summary>
+        /// Runs this instance.
+        /// </summary>
+        public void Run()
+        {
+            _timer = new Timer(OnTimerFired, null, TimeSpan.FromMilliseconds(500), _frequency);
+        }
+
+        /// <summary>
+        /// Called when [timer fired].
+        /// </summary>
+        /// <param name="state">The state.</param>
+        private async void OnTimerFired(object state)
+        {
+            var dataPath = Path.Combine(_appPaths.DataPath, "remotenotifications.json");
+
+            var lastRunTime = File.Exists(dataPath) ? File.GetLastWriteTimeUtc(dataPath) : DateTime.MinValue;
+
+            //if ((DateTime.UtcNow - lastRunTime) >= _frequency)
+            {
+                try
+                {
+                    await DownloadNotifications(dataPath, lastRunTime).ConfigureAwait(false);
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error downloading remote notifications", ex);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Downloads the notifications.
+        /// </summary>
+        /// <param name="dataPath">The data path.</param>
+        /// <param name="lastRunTime">The last run time.</param>
+        /// <returns>Task.</returns>
+        private async Task DownloadNotifications(string dataPath, DateTime lastRunTime)
+        {
+            using (var stream = await _httpClient.Get(new HttpRequestOptions
+            {
+                Url = Url
+
+            }).ConfigureAwait(false))
+            {
+                var notifications = _json.DeserializeFromStream<RemoteNotification[]>(stream);
+
+                File.WriteAllText(dataPath, string.Empty);
+
+                await CreateNotifications(notifications, lastRunTime).ConfigureAwait(false);
+            }
+        }
+
+        /// <summary>
+        /// Creates the notifications.
+        /// </summary>
+        /// <param name="notifications">The notifications.</param>
+        /// <param name="lastRunTime">The last run time.</param>
+        /// <returns>Task.</returns>
+        private async Task CreateNotifications(IEnumerable<RemoteNotification> notifications, DateTime lastRunTime)
+        {
+            // Only show notifications that are active, new since last download, and not older than max age
+            var notificationList = notifications
+                .Where(i => string.Equals(i.active, "1") && i.date > lastRunTime && (DateTime.Now - i.date) <= _maxAge)
+                .ToList();
+
+            foreach (var user in _userManager.Users.ToList())
+            {
+                foreach (var notification in notificationList)
+                {
+                    await _notificationsRepo.AddNotification(new Notification
+                    {
+                        Category = notification.category,
+                        Date = notification.date,
+                        Name = notification.name,
+                        Description = notification.description,
+                        Url = notification.url,
+                        UserId = user.Id
+
+                    }, CancellationToken.None).ConfigureAwait(false);
+                }
+            }
+        }
+
+        public void Dispose()
+        {
+            if (_timer != null)
+            {
+                _timer.Dispose();
+                _timer = null;
+            }
+        }
+
+        private class RemoteNotification
+        {
+            public string id { get; set; }
+            public DateTime date { get; set; }
+            public string name { get; set; }
+            public string description { get; set; }
+            public string category { get; set; }
+            public string url { get; set; }
+            public object imageUrl { get; set; }
+            public string active { get; set; }
+        }
+    }
+}
diff --git a/MediaBrowser.Server.Implementations/MediaBrowser.Server.Implementations.csproj b/MediaBrowser.Server.Implementations/MediaBrowser.Server.Implementations.csproj
index 625db7e4b..cfb4308bb 100644
--- a/MediaBrowser.Server.Implementations/MediaBrowser.Server.Implementations.csproj
+++ b/MediaBrowser.Server.Implementations/MediaBrowser.Server.Implementations.csproj
@@ -112,6 +112,7 @@
     <Compile Include="EntryPoints\LibraryChangedNotifier.cs" />
     <Compile Include="EntryPoints\LoadRegistrations.cs" />
     <Compile Include="EntryPoints\Notifications\Notifier.cs" />
+    <Compile Include="EntryPoints\Notifications\RemoteNotifications.cs" />
     <Compile Include="EntryPoints\Notifications\WebSocketNotifier.cs" />
     <Compile Include="EntryPoints\RefreshUsersMetadata.cs" />
     <Compile Include="EntryPoints\WebSocketEvents.cs" />