New: Slack notifications

Closes #1002

src/NzbDrone.Core/Notifications/Slack/Payloads/Attachment.cs

@@ -0,0 +1,15 @@
+using Newtonsoft.Json;
+
+namespace NzbDrone.Core.Notifications.Slack.Payloads
+{
+    public class Attachment
+    {
+        public string Fallback { get; set; }
+
+        public string Title { get; set; }
+
+        public string Text { get; set; }
+
+        public string Color { get; set; }
+    }
+}

src/NzbDrone.Core/Notifications/Slack/Payloads/SlackPayload.cs

@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace NzbDrone.Core.Notifications.Slack.Payloads
+{
+    public class SlackPayload
+    {
+        public string Text { get; set; }
+
+        public string Username { get; set; }
+
+        [JsonProperty("icon_emoji")]
+        public string IconEmoji { get; set; }
+
+        public List<Attachment> Attachments { get; set; }
+    }
+}

src/NzbDrone.Core/Notifications/Slack/Slack.cs

@@ -0,0 +1,152 @@
+using System;
+using System.Collections.Generic;
+using FluentValidation.Results;
+using NLog;
+using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Notifications.Slack.Payloads;
+using NzbDrone.Core.Rest;
+using NzbDrone.Core.Tv;
+using NzbDrone.Core.Validation;
+using RestSharp;
+
+
+namespace NzbDrone.Core.Notifications.Slack
+{
+    public class Slack : NotificationBase<SlackSettings>
+    {
+        private readonly Logger _logger;
+
+        public Slack(Logger logger)
+        {
+            _logger = logger;
+        }
+
+        public override string Name
+        {
+            get
+            {
+                return "Slack";
+            }
+        }
+
+        public override string Link
+        {
+            get { return "https://my.slack.com/services/new/incoming-webhook/"; }
+        }
+
+        public override void OnGrab(GrabMessage message)
+        {
+            var payload = new SlackPayload
+            {
+                IconEmoji = Settings.Icon,
+                Username = Settings.Username,
+                Text = "Grabbed",
+                Attachments = new List<Attachment>
+                {
+                    new Attachment
+                    {
+                        Fallback = message.Message,
+                        Title = message.Series.Title,
+                        Text = message.Message,
+                        Color = "warning"
+                    }
+                }
+            };
+
+            NotifySlack(payload);
+        }
+
+        public override void OnDownload(DownloadMessage message)
+        {
+            var payload = new SlackPayload
+            {
+                IconEmoji = Settings.Icon,
+                Username = Settings.Username,
+                Text = "Downloaded",
+                Attachments = new List<Attachment>
+                {
+                    new Attachment
+                    {
+                        Fallback = message.Message,
+                        Title = message.Series.Title,
+                        Text = message.Message,
+                        Color = "good"
+                    }
+                }
+            };
+
+            NotifySlack(payload);
+        }
+
+        public override void OnRename(Series series)
+        {
+            var payload = new SlackPayload
+            {
+                IconEmoji = Settings.Icon,
+                Username = Settings.Username,
+                Text = "Renamed",
+                Attachments = new List<Attachment>
+                {
+                    new Attachment
+                    {
+                        Title = series.Title,
+                    }
+                }
+            };
+
+            NotifySlack(payload);
+        }
+
+        public override ValidationResult Test()
+        {
+            var failures = new List<ValidationFailure>();
+
+            failures.AddIfNotNull(TestMessage());
+
+            return new ValidationResult(failures);
+        }
+
+        public ValidationFailure TestMessage()
+        {
+            try
+            {
+                var message = $"Test message from Sonarr posted at {DateTime.Now}";
+                var payload = new SlackPayload
+                {
+                    IconEmoji = Settings.Icon,
+                    Username = Settings.Username,
+                    Text = message
+                };
+
+                NotifySlack(payload);
+
+            }
+            catch (SlackExeption ex)
+            {
+                return new NzbDroneValidationFailure("Unable to post", ex.Message);
+            }
+
+            return null;
+        }
+
+        private void NotifySlack(SlackPayload payload)
+        {
+            try
+            {
+                var client = RestClientFactory.BuildClient(Settings.WebHookUrl);
+                var request = new RestRequest(Method.POST)
+                {
+                    RequestFormat = DataFormat.Json,
+                    JsonSerializer = new JsonNetSerializer()
+                };
+                request.AddBody(payload);
+                client.ExecuteAndValidate(request);
+            }
+            catch (RestException ex)
+            {
+                _logger.Error(ex, "Unable to post payload {0}", payload);
+                throw new SlackExeption("Unable to post payload", ex);
+            }
+        }
+    }
+}

src/NzbDrone.Core/Notifications/Slack/SlackExeption.cs

@@ -0,0 +1,16 @@
+using System;
+using NzbDrone.Common.Exceptions;
+
+namespace NzbDrone.Core.Notifications.Slack
+{
+    class SlackExeption : NzbDroneException
+    {
+        public SlackExeption(string message) : base(message)
+        {
+        }
+
+        public SlackExeption(string message, Exception innerException, params object[] args) : base(message, innerException, args)
+        {
+        }
+    }
+}

src/NzbDrone.Core/Notifications/Slack/SlackSettings.cs

@@ -0,0 +1,36 @@
+using FluentValidation;
+using NzbDrone.Core.Annotations;
+using NzbDrone.Core.ThingiProvider;
+using NzbDrone.Core.Validation;
+
+namespace NzbDrone.Core.Notifications.Slack
+{
+    public class SlackSettingsValidator : AbstractValidator<SlackSettings>
+    {
+        public SlackSettingsValidator()
+        {
+            RuleFor(c => c.WebHookUrl).IsValidUrl();
+            RuleFor(c => c.Username).NotEmpty();
+            RuleFor(c => c.Icon).NotEmpty();
+        }
+    }
+
+    public class SlackSettings : IProviderConfig
+    {
+        private static readonly SlackSettingsValidator Validator = new SlackSettingsValidator();
+
+        [FieldDefinition(0, Label = "Webhook URL", HelpText = "Slack channel webhook url", Type = FieldType.Url, HelpLink = "https://my.slack.com/services/new/incoming-webhook/")]
+        public string WebHookUrl { get; set; }
+
+        [FieldDefinition(1, Label = "Username", HelpText = "Choose the username that this integration will post as", Type = FieldType.Textbox)]
+        public string Username { get; set; }
+
+        [FieldDefinition(2, Label = "Icon", HelpText = "Change the icon that is used for messages from this integration", Type = FieldType.Textbox, HelpLink = "http://www.emoji-cheat-sheet.com/")]
+        public string Icon { get; set; }
+
+        public NzbDroneValidationResult Validate()
+        {
+            return new NzbDroneValidationResult(Validator.Validate(this));
+        }
+    }
+}

src/NzbDrone.Core/NzbDrone.Core.csproj

@@ -793,6 +793,11 @@
     <Compile Include="Notifications\Plex\PlexHomeTheaterSettings.cs" />
     <Compile Include="Notifications\Plex\PlexClientService.cs" />
     <Compile Include="Notifications\PushBullet\PushBulletException.cs" />
+    <Compile Include="Notifications\Slack\Payloads\Attachment.cs" />
+    <Compile Include="Notifications\Slack\Payloads\SlackPayload.cs" />
+    <Compile Include="Notifications\Slack\Slack.cs" />
+    <Compile Include="Notifications\Slack\SlackExeption.cs" />
+    <Compile Include="Notifications\Slack\SlackSettings.cs" />
     <Compile Include="Notifications\Synology\SynologyException.cs" />
     <Compile Include="Notifications\Synology\SynologyIndexer.cs" />
     <Compile Include="Notifications\Synology\SynologyIndexerProxy.cs" />