using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;

namespace GameStates
{
    class StateManager
    {

        private List<GameState> gamestates = new List<GameState>();

        public void addState(ContentManager theContentManager, GameState newstate, string title, StateManager tempmanager)
        {
            newstate.Init(title, tempmanager);
            newstate.loadContent(theContentManager);
            gamestates.Add(newstate);

        }

        public void changeState(string title)
        {
            foreach (GameState state in gamestates)
            {
                if (state.getActive())
                {
                    state.toggleActive();
                }
                if (title.Equals(state.getTitle()))
                {
                    state.toggleActive();
                }
            }
        }

        public void active(SpriteBatch spritebatch)
        {
            foreach (GameState state in gamestates)
            {
                if (state.getActive())
                {
                    state.Update();
                    state.Draw(spritebatch);
                }
            }
        }

        public GameState getActive()
        {
            foreach (GameState state in gamestates)
            {
                if (state.getActive())
                {
                    return state;
                }
            }
            return null;
        }
    }
}