New: Add metadata links to telegram messages

Closes #5342

src/NzbDrone.Core/Localization/Core/en.json

@@ -1433,6 +1433,8 @@
   "NotificationsTelegramSettingsSendSilentlyHelpText": "Sends the message silently. Users will receive a notification with no sound",
   "NotificationsTelegramSettingsTopicId": "Topic ID",
   "NotificationsTelegramSettingsTopicIdHelpText": "Specify a Topic ID to send notifications to that topic. Leave blank to use the general topic (Supergroups only)",
+  "NotificationsTelegramSettingsSendMetadataLink": "Add a link to the series metadata",
+  "NotificationsTelegramSettingsSendMetadataLinkHelpText": "Add a link to the series metadata when sending the notifications",
   "NotificationsTraktSettingsAccessToken": "Access Token",
   "NotificationsTraktSettingsAuthUser": "Auth User",
   "NotificationsTraktSettingsAuthenticateWithTrakt": "Authenticate with Trakt",

src/NzbDrone.Core/Notifications/Telegram/Telegram.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using FluentValidation.Results;
 using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Tv;
 
 namespace NzbDrone.Core.Notifications.Telegram
 {
@@ -47,15 +48,17 @@ namespace NzbDrone.Core.Notifications.Telegram
         public override void OnSeriesAdd(SeriesAddMessage message)
         {
             var title = Settings.IncludeAppNameInTitle ? SERIES_ADDED_TITLE_BRANDED : SERIES_ADDED_TITLE;
+            var text = FormatMessageWithLink(message.Message, message.Series);
 
-            _proxy.SendNotification(title, message.Message, Settings);
+            _proxy.SendNotification(title, text, Settings);
         }
 
         public override void OnSeriesDelete(SeriesDeleteMessage deleteMessage)
         {
             var title = Settings.IncludeAppNameInTitle ? SERIES_DELETED_TITLE_BRANDED : SERIES_DELETED_TITLE;
+            var text = FormatMessageWithLink(deleteMessage.Message, deleteMessage.Series);
 
-            _proxy.SendNotification(title, deleteMessage.Message, Settings);
+            _proxy.SendNotification(title, text, Settings);
         }
 
         public override void OnHealthIssue(HealthCheck.HealthCheck healthCheck)
@@ -94,5 +97,37 @@ namespace NzbDrone.Core.Notifications.Telegram
 
             return new ValidationResult(failures);
         }
+
+        private string FormatMessageWithLink(string message, Series series)
+        {
+            var linkType =  Settings.MetadataLinkType;
+
+            if (linkType == MetadataLinkType.None)
+            {
+                return message;
+            }
+
+            if (linkType == MetadataLinkType.Imdb && series.ImdbId.IsNotNullOrWhiteSpace())
+            {
+                return $"[{message}](https://www.imdb.com/title/{series.ImdbId})";
+            }
+
+            if (linkType == MetadataLinkType.Tvdb && series.TvdbId > 0)
+            {
+                return $"[{message}](http://www.thetvdb.com/?tab=series&id={series.TvdbId})";
+            }
+
+            if (linkType == MetadataLinkType.Trakt && series.TvdbId > 0)
+            {
+                return $"[{message}](http://trakt.tv/search/tvdb/{series.TvdbId}?id_type=show)";
+            }
+
+            if (linkType == MetadataLinkType.Tvmaze && series.TvMazeId > 0)
+            {
+                return $"[{message}](http://www.tvmaze.com/shows/{series.TvMazeId}/_)";
+            }
+
+            return message;
+        }
     }
 }

src/NzbDrone.Core/Notifications/Telegram/TelegramProxy.cs

@@ -35,13 +35,13 @@ namespace NzbDrone.Core.Notifications.Telegram
         public void SendNotification(string title, string message, TelegramSettings settings)
         {
             // Format text to add the title before and bold using markdown
-            var text = $"<b>{HttpUtility.HtmlEncode(title)}</b>\n{HttpUtility.HtmlEncode(message)}";
+            var text = $"*{HttpUtility.HtmlEncode(title)}*\n{HttpUtility.HtmlEncode(message)}";
 
             var requestBuilder = new HttpRequestBuilder(URL).Resource("bot{token}/sendmessage").Post();
 
             var request = requestBuilder.SetSegment("token", settings.BotToken)
                                         .AddFormParameter("chat_id", settings.ChatId)
-                                        .AddFormParameter("parse_mode", "HTML")
+                                        .AddFormParameter("parse_mode", "MarkdownV2")
                                         .AddFormParameter("text", text)
                                         .AddFormParameter("disable_notification", settings.SendSilently)
                                         .AddFormParameter("message_thread_id", settings.TopicId)

src/NzbDrone.Core/Notifications/Telegram/TelegramSettings.cs

@@ -1,7 +1,7 @@
+using System;
 using FluentValidation;
 using NzbDrone.Core.Annotations;
 using NzbDrone.Core.Validation;
-
 namespace NzbDrone.Core.Notifications.Telegram
 {
     public class TelegramSettingsValidator : AbstractValidator<TelegramSettings>
@@ -12,6 +12,13 @@ namespace NzbDrone.Core.Notifications.Telegram
             RuleFor(c => c.ChatId).NotEmpty();
             RuleFor(c => c.TopicId).Must(topicId => !topicId.HasValue || topicId > 1)
                                    .WithMessage("Topic ID must be greater than 1 or empty");
+            RuleFor(c => c.MetadataLinkType).Custom((metadataLinkType, context) =>
+            {
+                if (!Enum.IsDefined(typeof(MetadataLinkType), metadataLinkType))
+                {
+                    context.AddFailure($"MetadataLinkType is not valid: {0}");
+                }
+            });
         }
     }
 
@@ -34,9 +41,26 @@ namespace NzbDrone.Core.Notifications.Telegram
         [FieldDefinition(4, Label = "NotificationsTelegramSettingsIncludeAppName", Type = FieldType.Checkbox, HelpText = "NotificationsTelegramSettingsIncludeAppNameHelpText")]
         public bool IncludeAppNameInTitle { get; set; }
 
+        [FieldDefinition(5, Label = "NotificationsTelegramSettingsMetadataLinkType", Type = FieldType.Select, SelectOptions = typeof(MetadataLinkType), HelpText = "NotificationsTelegramSettingsMetadataLinkType")]
+        public MetadataLinkType MetadataLinkType { get; set; }
+
         public override NzbDroneValidationResult Validate()
         {
             return new NzbDroneValidationResult(Validator.Validate(this));
         }
     }
+
+    public enum MetadataLinkType
+    {
+        [FieldOption(Label = "None")]
+        None = 0,
+        [FieldOption(Label = "IMDb")]
+        Imdb,
+        [FieldOption(Label = "TVDb")]
+        Tvdb,
+        [FieldOption(Label = "TVMaze")]
+        Tvmaze,
+        [FieldOption(Label = "Trakt")]
+        Trakt,
+    }
 }