//---------------------------------------------------------------------------------------------------------------------------------------------------
// <copyright file="ControllerManager.cs" company="DarkWynter Studios">
//     Copyright (C)2007 DarkWynter Studios.  All rights reserved.
// </copyright>
//---------------------------------------------------------------------------------------------------------------------------------------------------
// {Contact : darkwynter.com for licensing information
//---------------------------------------------------------------------------------------------------------------------------------------------------

namespace DarkWynter.Engine.Controllers
{
    #region Using Statements
    using System;
    using System.Collections;
    using System.Collections.Generic;
    using System.Text;
    using Microsoft.Xna.Framework;
    using Microsoft.Xna.Framework.Input;
    using System.Diagnostics;

    using DarkWynter.Engine.Globals;
    using DarkWynter.Engine.ObjectLib;
    using DarkWynter.Engine.Menus;
    using DarkWynter.Engine.Controllers;
    using DarkWynter.Stream;
    using Microsoft.Xna.Framework.Graphics;
    #endregion

    /// <summary>
    /// Event Publisher
    /// Game level classes observer and subscribe to these events
    /// </summary>
    public class ControllerManager
    {
        /// <summary>
        /// Checks to see if a new controller has been plugged in
        /// </summary>
        /// <param name="objectLibrary">ObjectLibrary</param>
        public static void CheckForControllers(ObjectLibrary objectLibrary)
        {
            // Retrieve a list of PlayerIndexs already connected
            List<PlayerIndex> alreadyConnected = CheckControllersAreStillConnected();

            for (PlayerIndex i = PlayerIndex.One; i <= PlayerIndex.Four; i++)
            {
                // Check if our gamepad is connected
                if (!alreadyConnected.Contains(i) && GamePad.GetState(i).IsConnected)
                {
                    // This player has not been initialized so increment number of players and create the new player.
                    DarkWynterEngine.gameControllers.Add(new GameController(i));
                    DarkWynterEngine.menuControllers.Add(new MenuController(i));
                    Statics_Engine.SystemSettings.TOTAL_PLAYERS++;
                    Renderer.ResetViewports(Statics_Engine.SystemSettings.TOTAL_PLAYERS);
                }
            }
#if !XBOX360
            // This part is to setup the default keyboard player in case there are no controllers connected
            if (Statics_Engine.SystemSettings.TOTAL_PLAYERS == 0)
            {
                if (DarkWynterEngine.gameControllers.Count == 0)
                {
                    // If we are player 1 then we also have pc controls
                    DarkWynterEngine.gameControllers.Add(new GameController(Statics_Engine.SystemSettings.TOTAL_PLAYERS));
                    DarkWynterEngine.menuControllers.Add(new MenuController(Statics_Engine.SystemSettings.TOTAL_PLAYERS));
                }

                // We have one player the keyboard player
                Statics_Engine.SystemSettings.TOTAL_PLAYERS++;

                // Create the player, PlayerIndex.One is passed as a default value and not used
                Renderer.ResetViewports(Statics_Engine.SystemSettings.TOTAL_PLAYERS);
   
                // Initialize the player as alive
                objectLibrary.humans[0].health = 0;
                objectLibrary.humans[0].manna = 100;
            }
            // If Player 1 has a controller make sure they are given the keyboard too
            else if (Statics_Engine.SystemSettings.TOTAL_PLAYERS >= 1 &&
                     DarkWynterEngine.gameControllers[0].playerControllerType == Enums_Engine.ControllerType.XBOX_ONLY)
            {
                DarkWynterEngine.gameControllers[0] = new GameController(0, PlayerIndex.One);
                DarkWynterEngine.menuControllers[0] = new MenuController(0, PlayerIndex.One);
            }
#endif
        }

        private static List<PlayerIndex> CheckControllersAreStillConnected()
        {
            List<PlayerIndex> alreadyConnected = new List<PlayerIndex>();
            for (int i = 0; i < DarkWynterEngine.gameControllers.Count; i++)
            {
                if (DarkWynterEngine.gameControllers[i].playerControllerType != Enums_Engine.ControllerType.PC_ONLY)
                {
                    // Check if controller has been disconnected
                    if (!GamePad.GetState(DarkWynterEngine.gameControllers[i].playerIndex).IsConnected)
                    {
                        // Controller has been disconnected so remove it
                        DarkWynterEngine.gameControllers.RemoveAt(i);
                        DarkWynterEngine.menuControllers.RemoveAt(i);
                        i--;
                    }
                    else
                      {
                        // Still connected so add to our list of already connected controllers
                          alreadyConnected.Add(DarkWynterEngine.gameControllers[i].playerIndex);
                    }
                }
            }

            return alreadyConnected;
        }
    }
}