using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using System;

namespace Game1
{
    /// <summary>
    /// This is the main type for your game.
    /// </summary>
    public class Game1 : Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        SpriteFont Bold;
        private Texture2D[] tile = new Texture2D[5];
        private Texture2D tractor;
        private Texture2D house;
        private Tractor tractorUnit = new Tractor();
        private Input input = new Input();
        private House houseUnit = new House();


        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
        }

        protected override void Initialize()
        {
            // TODO: Add your initialization logic here
            base.Initialize();


            //Generates the map with some random values
            input.init(graphics, new Vector2(16,16), 56, 1);                        //Generates the starting size
            houseUnit.init(input.getTileSize(), input.getSpacing());                //Generates the house position
            tractorUnit.init(houseUnit.GetRectangle(), input);                      //Generates the Tractor
            tractorUnit.updateSizing(input, 0, houseUnit.getVector());              //Updates the first Size of the Tractor
            tractorUnit.setPos(houseUnit.getVector());                              //Changes the position of the tractor to the houses position at the start


          
            graphics.PreferredBackBufferWidth = (input.getTileSize() + input.getSpacing()) * (int)input.getSize().X;
            graphics.PreferredBackBufferHeight = (input.getTileSize() + input.getSpacing()) * (int)input.getSize().Y + 125;
            graphics.ApplyChanges();
        }

        protected override void LoadContent()
        {   
            spriteBatch = new SpriteBatch(GraphicsDevice);




            //Loads the PNG content and Fonts
            tile[0] = Content.Load<Texture2D>("Mountain");
            tile[1] = Content.Load<Texture2D>("tileunplantable");
            tile[2] = Content.Load<Texture2D>("Plantable");
            tile[3] = Content.Load<Texture2D>("Planted");
            tile[4] = Content.Load<Texture2D>("Crop");
            tractor = Content.Load<Texture2D>("Tractor");
            Bold = Content.Load<SpriteFont>("Font");
            house = Content.Load<Texture2D>("house");
        }



        protected override void UnloadContent()
        {

        }


        protected override void Update(GameTime gameTime) //updates every 60 seconds
        {
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
                Exit();
            tractorUnit.updateSizing(input, 0, houseUnit.getVector());                                                                  //Updates the size
            tractorUnit.setSpeed(input.changeSpeed(tractorUnit.getSpeed()));                                                            //Updates the Simulation Speed
            tractorUnit.setTractorSpeed(input.changeTractorSpeed(tractorUnit.getTractorSpeed(), tractorUnit.getPos()));                 //Updates the Tractor Speed
            input.controlWindowSize();                                                                                                  //Controls the size of the screen depending on the number of tiles
            houseUnit.updateRectangle(input.getSize(), input.getTileSize(), input.getSpacing());                                        //Updates the position of the house if the house appears out of bound

            base.Update(gameTime);
        }


        protected override void Draw(GameTime gameTime) //Draw Function
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);

            spriteBatch.Begin();

            for(int i = 0; i < input.getSize().X; i++) //Draw the tiles
            {
                for (int j = 0; j < input.getSize().Y; j++)
                {
                    spriteBatch.Draw(tile[tractorUnit.getFarm().getCrop(i, j).Status], new Rectangle(i * (input.getSpacingTile()), j * (input.getSpacingTile()), input.getTileSize(), input.getTileSize()), Color.White);
                }
            }
            spriteBatch.Draw(tractor, new Rectangle((int)tractorUnit.getTargetPosition().X / input.getSpacingTile() * (input.getTileSize() + input.getSpacing()) + input.getTileSize() / 4, (int)tractorUnit.getTargetPosition().Y / input.getSpacingTile() * (input.getTileSize() + input.getSpacing()) + input.getTileSize() / 4, input.getTileSize()/2, input.getTileSize()/2), Color.Green);
            for (int i = 0; i < tractorUnit.getPath().getCount() + 1; i++)
            {
                spriteBatch.Draw(tractor, new Rectangle((int)tractorUnit.getPath().getByIndex(i).getVector().X * (input.getSpacingTile()) + input.getTileSize() / 4, (int)tractorUnit.getPath().getByIndex(i).getVector().Y * (input.getSpacingTile()) + input.getTileSize() / 4, input.getTileSize()/2, input.getTileSize()/2), Color.Green);
            }

            spriteBatch.Draw(tractor, new Rectangle((int)tractorUnit.getPath().getFinalDest().getVector().X * (input.getSpacingTile()) + Convert.ToInt32(input.getTileSize() / 6), (int)tractorUnit.getPath().getFinalDest().getVector().Y * (input.getSpacingTile()) + Convert.ToInt32(input.getTileSize() / 6), Convert.ToInt32(input.getTileSize()/1.5), Convert.ToInt32(input.getTileSize()/1.5)) , Color.Red);                         //Draws the current target of the tractor
            spriteBatch.Draw(tractor, new Rectangle((int)tractorUnit.getPos().X, (int)tractorUnit.getPos().Y, input.getTileSize(), input.getTileSize()), Color.White);
            spriteBatch.Draw(house, houseUnit.GetRectangle(), Color.White);
            spriteBatch.DrawString(Bold, "Speed:" + tractorUnit.getSpeed().ToString(), new Vector2(10, input.getSize().Y * (input.getTileSize() + input.getSpacing()) + 20) , Color.White);                                                //Draws the speed value
            spriteBatch.DrawString(Bold, "Tractor Speed:" + tractorUnit.getTractorSpeed().ToString(), new Vector2(100, input.getSize().Y * (input.getTileSize() + input.getSpacing()) + 20), Color.White);
            spriteBatch.DrawString(Bold, "Tile Size:" + input.getTileSize().ToString() + "pix", new Vector2(10, input.getSize().Y * (input.getTileSize() + input.getSpacing()) + 40), Color.White);                                        //Draws the tile size
            spriteBatch.DrawString(Bold, "Matrix Size: " + input.getSize().X.ToString() + " X " + input.getSize().Y.ToString(), new Vector2(10, input.getSize().Y * (input.getTileSize() + input.getSpacing()) + 60), Color.White);
            spriteBatch.DrawString(Bold, tractorUnit.getCurrentTask(), new Vector2(10, input.getSize().Y * (input.getTileSize() + input.getSpacing()) + 80), Color.White);  //Draws the tile size
            spriteBatch.DrawString(Bold, tractorUnit.getScore().ToString(), new Vector2(10, input.getSize().Y * (input.getTileSize() + input.getSpacing()) + 100), Color.White);
            spriteBatch.End();

            base.Draw(gameTime);
        }
    }
}