using CzokoŚmieciarka.MonoGameView.DataModels.Interfaces;
using CzokoŚmieciarka.MonoGameView.DataModels.Interfaces.GarbageCollector;
using CzokoŚmieciarka.MonoGameView.DataModels.Interfaces.TrashCans;
using CzokoŚmieciarka.MonoGameView.DataModels.Models;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using System;
using System.Collections.Generic;
using System.Linq;
using CzokoŚmieciarka.MonoGameView.Algorithms;
using MonoGameView.DataModels;

namespace CzokoŚmieciarka.MonoGameView
{
    /// <summary>
    /// This is the main type for your game.
    /// </summary>
    public class Game1 : Game
    {
        private static int size;
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        Texture2D road1;
        Texture2D road2;
        Texture2D grass;
        Texture2D house;
        MapLoader mapLoader = new MapLoader();
        Vector2 roadPos;
        float timer;
        const float TIMER = 0.2f;
        int stepN;
        List<IStep> steps;
        GarbageCollector collector;
        object[,] grid;
        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
            graphics.PreferredBackBufferWidth = 500;
            graphics.PreferredBackBufferHeight = 500;
        }



        /// <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
            roadPos = new Vector2(0, 0);
            timer = 0.2f;

            mapLoader.Load(out size,out grid,"map.xml");
            collector = new GarbageCollector(new Coords(0, 0), new List<AGarbageCollectorContainer>(), size, size);


            stepN = 0;
            var dfs = new DFS();
            steps = dfs.BestPath(Content, collector, grid);

            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);
            road1 = Content.Load<Texture2D>("road1");
            road2 = Content.Load<Texture2D>("road2");
            grass = Content.Load<Texture2D>("grass");
            house = Content.Load<Texture2D>("house");
            // 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()
        {
            Content.Unload();
            // 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();
            var elapsed = (float)gameTime.ElapsedGameTime.TotalSeconds;
            timer -= elapsed;
            if (timer<0)
            {
                timer = TIMER;
                if (steps.Any())
                {
                    steps.First().Invoke(collector, grid);
                    steps.RemoveAt(0);
                }
            }
            // TODO: Add your update logic here

            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();

            for (int x = 0; x < size; x++)
            {
                for (int y = 0; y < size; y++)
                {
                    if (grid[x, y] is Road1) spriteBatch.Draw(road1, new Rectangle(x*500 / size, y*500 / size, 500/size, 500/size),Color.White);
                    else if (grid[x,y] is Road2) spriteBatch.Draw(road2, new Rectangle(x * 500 / size, y * 500 / size, 500 / size, 500 / size), Color.White);
                    else if (grid[x, y] is House) spriteBatch.Draw(house, new Rectangle(x * 500 / size, y * 500 / size, 500 / size, 500 / size), Color.White);
                    else spriteBatch.Draw(grass, new Rectangle(x * 500 / size, y * 500 / size, 500 / size, 500 / size), Color.White);
                }
            }
            collector.Draw(Content, spriteBatch, size);

            spriteBatch.End();
            // TODO: Add your drawing code here

            base.Draw(gameTime);
        }
    }
}