Show warning message for rTorrent that it doesn't support torrent removal

src/NzbDrone.Api/ProviderResource.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using NzbDrone.Api.ClientSchema;
 using NzbDrone.Api.REST;
+using NzbDrone.Core.ThingiProvider;
 
 namespace NzbDrone.Api
 {
@@ -12,6 +13,7 @@ public class ProviderResource : RestResource
         public string Implementation { get; set; }
         public string ConfigContract { get; set; }
         public string InfoLink { get; set; }
+        public ProviderMessage Message { get; set; }
 
         public List<ProviderResource> Presets { get; set; }
     }

src/NzbDrone.Core/Download/Clients/rTorrent/RTorrent.cs

@@ -10,9 +10,9 @@
 using NLog;
 using NzbDrone.Core.Validation;
 using FluentValidation.Results;
-using System.Net;
 using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.RemotePathMappings;
+using NzbDrone.Core.ThingiProvider;
 
 namespace NzbDrone.Core.Download.Clients.RTorrent
 {
@@ -92,6 +92,14 @@ public override string Name
             }
         }
 
+        public override ProviderMessage Message
+        {
+            get
+            {
+                return new ProviderMessage("Sonarr is unable to remove torrents that have finished seeding when using rTorrent", ProviderMessageType.Warning);
+            }
+        }
+
         public override IEnumerable<DownloadClientItem> GetItems()
         {
             try

src/NzbDrone.Core/Download/DownloadClientBase.cs

@@ -32,6 +32,14 @@ public Type ConfigContract
             }
         }
 
+        public virtual ProviderMessage Message
+        {
+            get
+            {
+                return null;
+            }
+        }
+
         public IEnumerable<ProviderDefinition> DefaultDefinitions
         {
             get

src/NzbDrone.Core/Indexers/IndexerBase.cs

@@ -37,6 +37,14 @@ public Type ConfigContract
             get { return typeof(TSettings); }
         }
 
+        public virtual ProviderMessage Message
+        {
+            get
+            {
+                return null;
+            }
+        }
+
         public virtual IEnumerable<ProviderDefinition> DefaultDefinitions
         {
             get

src/NzbDrone.Core/Metadata/MetadataBase.cs

@@ -20,6 +20,14 @@ public Type ConfigContract
             }
         }
 
+        public virtual ProviderMessage Message
+        {
+            get
+            {
+                return null;
+            }
+        }
+
         public IEnumerable<ProviderDefinition> DefaultDefinitions
         {
             get

src/NzbDrone.Core/Notifications/NotificationBase.cs

@@ -18,6 +18,14 @@ public Type ConfigContract
             }
         }
 
+        public virtual ProviderMessage Message
+        {
+            get
+            {
+                return null;
+            }
+        }
+
         public IEnumerable<ProviderDefinition> DefaultDefinitions
         {
             get

src/NzbDrone.Core/NzbDrone.Core.csproj

@@ -887,6 +887,7 @@
     <Compile Include="ThingiProvider\NullConfig.cs" />
     <Compile Include="ThingiProvider\ProviderDefinition.cs" />
     <Compile Include="ThingiProvider\ProviderFactory.cs" />
+    <Compile Include="ThingiProvider\ProviderMessage.cs" />
     <Compile Include="ThingiProvider\ProviderRepository.cs" />
     <Compile Include="Tv\Actor.cs" />
     <Compile Include="Tv\AddSeriesOptions.cs" />

src/NzbDrone.Core/ThingiProvider/IProvider.cs

@@ -8,7 +8,7 @@ public interface IProvider
     {
         string Name { get; }
         Type ConfigContract { get; }
-
+        ProviderMessage Message { get; }
         IEnumerable<ProviderDefinition> DefaultDefinitions { get; }
         ProviderDefinition Definition { get; set; }
         ValidationResult Test();

src/NzbDrone.Core/ThingiProvider/ProviderDefinition.cs

@@ -11,6 +11,7 @@ public abstract class ProviderDefinition : ModelBase
         public string Implementation { get; set; }
         public string ConfigContract { get; set; }
         public virtual bool Enable { get; set; }
+        public ProviderMessage Message { get; set; }
 
         public IProviderConfig Settings
         {

src/NzbDrone.Core/ThingiProvider/ProviderFactory.cs

@@ -141,6 +141,7 @@ protected virtual List<TProviderDefinition> Active()
         public virtual TProviderDefinition GetProviderCharacteristics(TProvider provider, TProviderDefinition definition)
         {
             definition.ImplementationName = provider.Name;
+            definition.Message = provider.Message;
 
             return definition;
         }

src/NzbDrone.Core/ThingiProvider/ProviderMessage.cs

@@ -0,0 +1,21 @@
+namespace NzbDrone.Core.ThingiProvider
+{
+    public class ProviderMessage
+    {
+        public string Message { get; set; }
+        public ProviderMessageType Type { get; set; }
+
+        public ProviderMessage(string message, ProviderMessageType type)
+        {
+            Message = message;
+            Type = type;
+        }
+    }
+
+    public enum ProviderMessageType
+    {
+        Info,
+        Warning,
+        Error
+    }
+}

src/UI/Form/FormBuilder.js

@@ -1,6 +1,7 @@
 var Marionette = require('marionette');
 var Handlebars = require('handlebars');
 var _ = require('underscore');
+require('./FormMessage');
 
 var _templateRenderer = function(templateName) {
     var templateFunction = Marionette.TemplateCache.get(templateName);

src/UI/Form/FormMessage.js

@@ -0,0 +1,17 @@
+var Handlebars = require('handlebars');
+
+Handlebars.registerHelper('formMessage', function(message) {
+    if (!message) {
+        return '';
+    }
+
+    var level = message.type;
+
+    if (message.type === 'error') {
+        level = 'danger';
+    }
+
+    var messageHtml = '<div class="alert alert-{0}" role="alert">{1}</div>'.format(level, message.message);
+
+    return new Handlebars.SafeString(messageHtml);
+});

src/UI/Settings/DownloadClient/Edit/DownloadClientEditViewTemplate.hbs

@@ -8,6 +8,8 @@
         {{/if}}
     </div>
     <div class="modal-body download-client-modal">
+        {{formMessage message}}
+
         <div class="form-horizontal">
             <div class="form-group">
                 <label class="col-sm-3 control-label">Name</label>