added commands.

they can be triggered using the api

api/command/

NzbDrone.Api/Commands/CommandModule.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using NzbDrone.Api.Extensions;
+using NzbDrone.Common.Messaging;
+
+namespace NzbDrone.Api.Commands
+{
+    public class CommandModule : NzbDroneRestModule<CommandResource>
+    {
+        private readonly IMessageAggregator _messageAggregator;
+        private readonly IEnumerable<ICommand> _commands;
+
+        public CommandModule(IMessageAggregator messageAggregator, IEnumerable<ICommand> commands)
+        {
+            _messageAggregator = messageAggregator;
+            _commands = commands;
+
+            CreateResource = RunCommand;
+        }
+
+        private CommandResource RunCommand(CommandResource resource)
+        {
+            var commandType = _commands.Single(c => c.GetType().Name.Replace("Command", "").Equals(resource.Command, StringComparison.InvariantCultureIgnoreCase))
+                                       .GetType();
+            var command = (object)Request.Body.FromJson<ICommand>(commandType);
+            var method = typeof(IMessageAggregator).GetMethod("PublishCommand");
+            var genericMethod = method.MakeGenericMethod(commandType);
+            genericMethod.Invoke(_messageAggregator, new[] { command });
+
+            return resource;
+
+        }
+    }
+}