using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Media;
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;

namespace LunaLightXMG
{
    public class LunaLightGame : Game
    {
        // Class Objects
        private Player player;
        private PlayerInput playerInput;
        private List<Enemy> enemies;
        private int numOfEnemies;
        private GraphicsDeviceManager graphics;
        private Camera2D camera2D;
        private SpriteBatch spriteBatch;

        // Native retro scale
        private int retroWidth = 320;
        private int retroHeight = 180;
        
        // Test Render Target Handler
        private RenderHandler renderHandler;
        bool resizing;
        
        // Test sprites - eventually handle in a sprite manager?
        private Texture2D platformTexture;
        private Texture2D sinkArea;
        
        // Test platforms
        private Platform[] platforms;
        private int numOfPlatforms;

        // Level Object
        private Level level;

        // Music
        private SoundEffect sinkBeats;
        private SoundEffectInstance backgroundMusicInstance;

        // Debugging
        private SpriteFont debugFont;
        private Texture2D debugGrid;
        
        // Keyboard input
        private KeyboardState prevKeyState;
        // Util
        Utilities util;
        
        public LunaLightGame()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
            IsMouseVisible = true;

            Window.ClientSizeChanged += OnClientSizeChanged;
            Window.AllowUserResizing = true;
            IsMouseVisible = true;

            playerInput = new PlayerInput();

            //level = new Level(spriteBatch, renderHandler);
        }
        
        protected override void Initialize()
        {
            // Set initial window size
            graphics.PreferredBackBufferWidth = 1920;
            graphics.PreferredBackBufferHeight = 1080;
            graphics.ApplyChanges();
            
            playerInput.HasControl = true; // May need to find a new home for this
            base.Initialize();
        }
        
        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);

            renderHandler = new RenderHandler(GraphicsDevice, spriteBatch, retroWidth, retroHeight);

            if (level != null)
                level.Dispose();

            level = new Level(spriteBatch, renderHandler);
        }
        
        protected override void Update(GameTime gameTime)
        {
            level.Update(gameTime);
            base.Update(gameTime);
        }
        
        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);
            level.Draw(gameTime, spriteBatch);
            base.Draw(gameTime);
        }

        #region Methods

        private void OnClientSizeChanged(object sender, EventArgs eventArgs)
        {
            if (!resizing && Window.ClientBounds.Width > 0 && Window.ClientBounds.Height > 0)
            {
                resizing = true;
                renderHandler.CalculateRenderDestination();
                resizing = false;
            }
        }
        
        

        #endregion

    }
}