Split the service and server functions

TGS.Server/ChatCommands/ChatCommand.cs

@@ -0,0 +1,45 @@
+using System.Collections.Generic;
+using System.Threading;
+using TGS.Interface;
+
+namespace TGS.Server.ChatCommands
+{
+	/// <summary>
+	/// A command heard by a <see cref="ChatProviders.IChatProvider"/>
+	/// </summary>
+	abstract class ChatCommand : Command
+	{
+		/// <summary>
+		/// <see cref="CommandInfo"/> for the <see cref="ChatCommand"/>
+		/// </summary>
+		public static ThreadLocal<CommandInfo> CommandInfo { get; private set; } = new ThreadLocal<CommandInfo>();
+		/// <summary>
+		/// If set to <see langword="true"/>, the <see cref="ChatCommand"/> cannot be invoked by a non-admin or outside an admin chat channel
+		/// </summary>
+		public bool RequiresAdmin { get; protected set; }
+		/// <summary>
+		/// Shorthand for accessing <see cref="CommandInfo.Server"/>
+		/// </summary>
+		protected ServerInstance Instance { get { return CommandInfo.Value.Server; } }
+
+		/// <inheritdoc />
+		public override ExitCode DoRun(IList<string> parameters)
+		{
+			if (RequiresAdmin)
+			{
+				var Info = CommandInfo.Value;
+				if (!Info.IsAdmin)
+				{
+					OutputProc("You are not authorized to use that command!");
+					return ExitCode.BadCommand;
+				}
+				if (!Info.IsAdminChannel)
+				{
+					OutputProc("Use this command in an admin channel!");
+					return ExitCode.BadCommand;
+				}
+			}
+			return base.DoRun(parameters);
+		}
+	}
+}