New: Add Subsonic library update and notify (#368)

* New: Add Subsonic library update and notify

* New: Subsonic setting for to allow connection via SSL

src/NzbDrone.Core/Notifications/Subsonic/Subsonic.cs

@@ -0,0 +1,95 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Sockets;
+using FluentValidation.Results;
+using NLog;
+using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Music;
+
+namespace NzbDrone.Core.Notifications.Subsonic
+{
+    public class Subsonic : NotificationBase<SubsonicSettings>
+    {
+        private readonly ISubsonicService _subsonicService;
+        private readonly Logger _logger;
+
+        public Subsonic(ISubsonicService subsonicService, Logger logger)
+        {
+            _subsonicService = subsonicService;
+            _logger = logger;
+        }
+
+        public override string Link => "http://subsonic.org/";
+
+        public override void OnGrab(GrabMessage grabMessage)
+        {
+            const string header = "Lidarr - Grabbed";
+
+            Notify(Settings, header, grabMessage.Message);
+        }
+
+        public override void OnAlbumDownload(AlbumDownloadMessage message)
+        {
+            const string header = "Lidarr - Downloaded";
+
+            Notify(Settings, header, message.Message);
+            Update();
+        }
+
+        public override void OnDownload(TrackDownloadMessage message)
+        {
+            const string header = "Lidarr - Downloaded";
+
+            Notify(Settings, header, message.Message);
+            
+        }
+
+        public override void OnRename(Artist artist)
+        {
+            Update();
+        }
+
+        public override string Name => "Subsonic";
+
+        public override ValidationResult Test()
+        {
+            var failures = new List<ValidationFailure>();
+
+            failures.AddIfNotNull(_subsonicService.Test(Settings, "Success! Subsonic has been successfully configured!"));
+
+            return new ValidationResult(failures);
+        }
+
+        private void Notify(SubsonicSettings settings, string header, string message)
+        {
+            try
+            {
+                if (Settings.Notify)
+                {
+                    _subsonicService.Notify(Settings, $"{header} - {message}");
+                }
+            }
+            catch (SocketException ex)
+            {
+                var logMessage = $"Unable to connect to Subsonic Host: {Settings.Host}:{Settings.Port}";
+                _logger.Debug(ex, logMessage);
+            }
+        }
+
+        private void Update()
+        {
+            try
+            {
+                if (Settings.UpdateLibrary)
+                {
+                    _subsonicService.Update(Settings);
+                }
+            }
+            catch (SocketException ex)
+            {
+                var logMessage = $"Unable to connect to Subsonic Host: {Settings.Host}:{Settings.Port}";
+                _logger.Debug(ex, logMessage);
+            }
+        }
+    }
+}