Added first implimentation of the Notification Service #8

Added tests to cover the notification service

PlexRequests.Services/Notification/EmailMessageNotification.cs

@@ -0,0 +1,108 @@
+#region Copyright
+// /************************************************************************
+//    Copyright (c) 2016 Jamie Rees
+//    File: EmailMessageNotification.cs
+//    Created By: Jamie Rees
+//   
+//    Permission is hereby granted, free of charge, to any person obtaining
+//    a copy of this software and associated documentation files (the
+//    "Software"), to deal in the Software without restriction, including
+//    without limitation the rights to use, copy, modify, merge, publish,
+//    distribute, sublicense, and/or sell copies of the Software, and to
+//    permit persons to whom the Software is furnished to do so, subject to
+//    the following conditions:
+//   
+//    The above copyright notice and this permission notice shall be
+//    included in all copies or substantial portions of the Software.
+//   
+//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+//    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+//    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+//    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+//    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+//    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//  ************************************************************************/
+#endregion
+using System;
+using System.Net;
+using System.Net.Mail;
+
+using NLog;
+
+using PlexRequests.Core;
+using PlexRequests.Core.SettingModels;
+
+namespace PlexRequests.Services.Notification
+{
+    public class EmailMessageNotification : INotification
+    {
+        public EmailMessageNotification(ISettingsService<EmailNotificationSettings> settings)
+        {
+            EmailNotificationSettings = settings;
+        }
+
+        private static Logger Log = LogManager.GetCurrentClassLogger();
+        private ISettingsService<EmailNotificationSettings> EmailNotificationSettings { get; }
+        public string NotificationName => "EmailMessageNotification";
+        public bool Notify(string title, string requester)
+        {
+            var configuration = GetConfiguration();
+            if (!ValidateConfiguration(configuration))
+            {
+                return false;
+            }
+
+            var message = new MailMessage
+            {
+                IsBodyHtml = true,
+                To = { new MailAddress(configuration.RecipientEmail) },
+                Body = $"User {requester} has requested {title}!",
+                From = new MailAddress(configuration.EmailUsername),
+                Subject = $"New Request for {title}!"
+            };
+
+            try
+            {
+                using (var smtp = new SmtpClient(configuration.EmailHost, configuration.EmailPort))
+                {
+                    smtp.Credentials = new NetworkCredential(configuration.EmailUsername, configuration.EmailPassword);
+                    smtp.EnableSsl = configuration.Ssl;
+                    smtp.Send(message);
+                    return true;
+                }
+            }
+            catch (SmtpException smtp)
+            {
+                Log.Fatal(smtp);
+            }
+            catch (Exception e)
+            {
+                Log.Fatal(e);
+            }
+            return false;
+        }
+
+        private EmailNotificationSettings GetConfiguration()
+        {
+            var settings = EmailNotificationSettings.GetSettings();
+            return settings;
+        }
+
+        private bool ValidateConfiguration(EmailNotificationSettings settings)
+        {
+            if (!settings.Enabled)
+            {
+                return false;
+            }
+            if (string.IsNullOrEmpty(settings.EmailHost) || string.IsNullOrEmpty(settings.EmailUsername)
+                || string.IsNullOrEmpty(settings.EmailPassword) || string.IsNullOrEmpty(settings.RecipientEmail)
+                || string.IsNullOrEmpty(settings.EmailPort.ToString()))
+            {
+                return false;
+            }
+
+            return true;
+        }
+    }
+}

PlexRequests.Services/Notification/INotification.cs

@@ -0,0 +1,46 @@
+#region Copyright
+// /************************************************************************
+//    Copyright (c) 2016 Jamie Rees
+//    File: INotification.cs
+//    Created By: Jamie Rees
+//   
+//    Permission is hereby granted, free of charge, to any person obtaining
+//    a copy of this software and associated documentation files (the
+//    "Software"), to deal in the Software without restriction, including
+//    without limitation the rights to use, copy, modify, merge, publish,
+//    distribute, sublicense, and/or sell copies of the Software, and to
+//    permit persons to whom the Software is furnished to do so, subject to
+//    the following conditions:
+//   
+//    The above copyright notice and this permission notice shall be
+//    included in all copies or substantial portions of the Software.
+//   
+//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+//    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+//    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+//    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+//    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+//    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//  ************************************************************************/
+#endregion
+namespace PlexRequests.Services.Notification
+{
+    public interface INotification
+    {
+        /// <summary>
+        /// Gets the name of the notification.
+        /// </summary>
+        /// <value>
+        /// The name of the notification.
+        /// </value>
+        string NotificationName { get; }
+        /// <summary>
+        /// Notifies the specified title.
+        /// </summary>
+        /// <param name="title">The title.</param>
+        /// <param name="requester">The requester.</param>
+        /// <returns></returns>
+        bool Notify(string title, string requester);
+    }
+}

PlexRequests.Services/Notification/NotificationService.cs

@@ -0,0 +1,78 @@
+#region Copyright
+// /************************************************************************
+//    Copyright (c) 2016 Jamie Rees
+//    File: NotificationService.cs
+//    Created By: Jamie Rees
+//   
+//    Permission is hereby granted, free of charge, to any person obtaining
+//    a copy of this software and associated documentation files (the
+//    "Software"), to deal in the Software without restriction, including
+//    without limitation the rights to use, copy, modify, merge, publish,
+//    distribute, sublicense, and/or sell copies of the Software, and to
+//    permit persons to whom the Software is furnished to do so, subject to
+//    the following conditions:
+//   
+//    The above copyright notice and this permission notice shall be
+//    included in all copies or substantial portions of the Software.
+//   
+//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+//    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+//    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+//    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+//    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+//    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//  ************************************************************************/
+#endregion
+using System.Collections.Generic;
+using System.Threading;
+
+namespace PlexRequests.Services.Notification
+{
+    public static class NotificationService
+    {
+        public static Dictionary<string, INotification> Observers { get; }
+
+        static NotificationService()
+        {
+            Observers = new Dictionary<string, INotification>();
+        }
+
+        public static void Publish(string title, string requester)
+        {
+            foreach (var observer in Observers)
+            {
+                var notification = observer.Value;
+
+                new Thread(() =>
+                {
+                    Thread.CurrentThread.IsBackground = true;
+                    notification.Notify(title, requester);
+                }).Start();
+            }
+        }
+
+        public static void Subscribe(INotification notification)
+        {
+            INotification notificationValue;
+            if (Observers.TryGetValue(notification.NotificationName, out notificationValue))
+            {
+                // Observer already exists
+                return;
+            }
+
+            Observers[notification.NotificationName] = notification;
+        }
+
+        public static void UnSubscribe(INotification notification)
+        {
+            INotification notificationValue;
+            if (!Observers.TryGetValue(notification.NotificationName, out notificationValue))
+            {
+                // Observer doesn't exists
+                return;
+            }
+            Observers.Remove(notification.NotificationName);
+        }
+    }
+}

PlexRequests.Services/PlexRequests.Services.csproj

@@ -77,6 +77,9 @@
     <Compile Include="Interfaces\IAvailabilityChecker.cs" />
     <Compile Include="Interfaces\IConfigurationReader.cs" />
     <Compile Include="Interfaces\IIntervals.cs" />
+    <Compile Include="Notification\INotification.cs" />
+    <Compile Include="Notification\EmailMessageNotification.cs" />
+    <Compile Include="Notification\NotificationService.cs" />
     <Compile Include="PlexAvailabilityChecker.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="UpdateInterval.cs" />