using Chernobyl.Collections.Generic.Event;
using Chernobyl.Plugin;

namespace Chernobyl.Game
{
    /// <summary>
    /// The type that is added to the root <see cref="IEventCollection{T}"/> and is
    /// used to represent a game as an application. This type contains an
    /// the following services:
    /// 
    /// <list type="number">
    ///     <item>
    ///         <description><see cref="IEventCollection{T}"/> of <see cref="IGame"/> 
    ///         instances that is used to represent games being played within 
    ///         the application (usually one for a client application and many
    ///         for a server).</description>
    ///     </item>
    /// </list>
    /// </summary>
    class GameApplication : DecoratingEventList<object>, IGame
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="GameApplication"/> class.
        /// </summary>
        public GameApplication()
        {
            Add(new DecoratingEventList<IGame>());
        }

        /// <summary>
        /// A type that adds an instance of <see cref="GameApplication"/> to the 
        /// <see cref="IEventCollection{T}"/> instance passed to this types constructor.
        /// The instance that is added is used to represent the game as an
        /// application. Additionally this type adds additional services to the 
        /// <see cref="Game"/> service.
        /// </summary>
        public class Plugin : IPlugin
        {
            /// <summary>
            /// Initializes a new instance of the <see cref="Plugin"/> class.
            /// </summary>
            /// <param name="services">The instance that is to have the
            /// <see cref="Game"/> services added to it.</param>
            public Plugin(IEventCollection<object> services)
            {
                services.Add(new GameApplication());
            }
        }
    }
}