using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using RhythmBullet.Zer01HD.UI.Screen;

namespace RhythmBullet
{
    /// <summary>
    /// This is the main type for your game.
    /// </summary>
    public class RhythmBulletGame : Game
    {
        private GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;

        Screen currentScreen
        {
            get
            {
                return currentScreen;
            }
            set
            {
                currentScreen.Hide();
                currentScreen = value;
                currentScreen.Show();
            }
        }

        public RhythmBulletGame()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
            graphics.PreferredBackBufferWidth = 1920;
            graphics.PreferredBackBufferHeight = 1080;
        }

        /// <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()
        {
            // TODO: Add your initialization logic here
            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);

            // TODO: use this.Content to load your game content here
        }

        /// <summary>
        /// UnloadContent will be called once per game and is the place to unload
        /// game-specific content.
        /// </summary>
        protected override void UnloadContent()
        {
            // TODO: Unload any non ContentManager content here
        }

        /// <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)
        {
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape)) Exit();

            currentScreen.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)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);

            spriteBatch.Begin();
            currentScreen.Draw(spriteBatch);
            spriteBatch.End();
            
            base.Draw(gameTime);
        }

        public int getWidth()
        {
            return graphics.PreferredBackBufferWidth;
        }

        public int getHeight()
        {
            return graphics.PreferredBackBufferHeight;
        }

        public void resize(int width, int height)
        {
            graphics.PreferredBackBufferWidth = width;
            graphics.PreferredBackBufferHeight = height;

        }
    }
}