#region Arthea License

/***********************************************************************
*  Arthea MUD by R. Jennings (2007)      http://arthea.googlecode.com/ *
*  By using this code you comply with the Artistic and GPLv2 Licenses. *
***********************************************************************/

#endregion

using Arthea.Connections.Players;
using Arthea.Environment;

namespace Arthea.Commands.Information
{
    /// <summary>
    /// Implements a help command.
    /// </summary>
    public class HelpCommand : Command
    {
        #region [rgn] Constructors (1)

        /// <summary>
        /// Initializes a new instance of the <see cref="HelpCommand"/> class.
        /// </summary>
        public HelpCommand() : base("help", "displays help for given keyword")
        {
        }

        #endregion [rgn]

        #region [rgn] Methods (1)

        // [rgn] Public Methods (1)

        /// <summary>
        /// Processes the command for a player.
        /// </summary>
        /// <param name="player">The player.</param>
        /// <param name="argument">The argument.</param>
        public override void Process(Player player, String argument)
        {
            if (!argument)
            {
                new CommandsCommand().Process(player, argument);

                return;
            }

            Help help = Lists.Helps.FindKeyword(argument);

            if (help == null)
            {
                player.WriteLine("No help on that keyword.");
                return;
            }

            if (help.Level > player.Level)
            {
                player.WriteLine("You are not authorized to view help on that subject.");
                return;
            }

            player.WriteLine(help.Keywords);
            player.DrawLine();
            player.WriteLine(help.Text);
            player.DrawLine();
            player.WriteLine(help.SeeAlso);
        }

        #endregion [rgn]
    }
}