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;
using Microsoft.Xna.Framework.Net;
using Microsoft.Xna.Framework.Storage;

namespace CarFire
{
    /// <summary>
    /// This is the main type for your game
    /// </summary>
    public class XnaGame : Microsoft.Xna.Framework.Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;

        NetworkManager networkGame;
        IScreenManager screenManager;
        IDeterministicGame deterministicGame;

        public XnaGame()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";

            Components.Add(new GamerServicesComponent(this));

            screenManager = new ScreenManager();
            deterministicGame = new Game();
            networkGame = new NetworkManager(screenManager, deterministicGame);

            Vector2 size = deterministicGame.PreferredScreenSize;
            graphics.PreferredBackBufferWidth = (int)size.X;
            graphics.PreferredBackBufferHeight = (int)size.Y;
            graphics.ApplyChanges();
        }

        /// <summary>
        /// Allows the game to perform any initialization it needs to before starting to run.
        /// This is where it can query for any required services and load any non-graphic
        /// related content.  Calling base.Initialize will enumerate through any components
        /// and initialize them as well.
        /// </summary>
        protected override void Initialize()
        {
            IsFixedTimeStep = true;
            TargetElapsedTime = networkGame.TargetTimeSpan;

            base.Initialize();
        }


        /// <summary>
        /// LoadContent will be called once per game and is the place to load
        /// all of your content.
        /// </summary>
        protected override void LoadContent()
        {
            // Create a new SpriteBatch, which can be used to draw textures.
            spriteBatch = new SpriteBatch(GraphicsDevice);

            screenManager.LoadContent(Content, graphics);
            deterministicGame.LoadContent(Content);
        }

        /// <summary>
        /// UnloadContent will be called once per game and is the place to unload
        /// all content.
        /// </summary>
        protected override void UnloadContent()
        {
            screenManager.UnloadContent();
            deterministicGame.UnloadContent();
        }

        /// <summary>
        /// Allows the game to run logic such as updating the world,
        /// checking for collisions, gathering input, and playing audio.
        /// </summary>
        /// <param name="gameTime">Provides a snapshot of timing values.</param>
        protected override void Update(GameTime gameTime)
        {
            networkGame.Update(gameTime);

            base.Update(gameTime);
        }

        /// <summary>
        /// This is called when the game should draw itself.
        /// </summary>
        /// <param name="gameTime">Provides a snapshot of timing values.</param>
        protected override void Draw(GameTime gameTime)
        {
            spriteBatch.Begin();
            networkGame.Draw(gameTime, spriteBatch);
            spriteBatch.End();

            base.Draw(gameTime);
        }
    }
}