package controller;

import adapter.ModelAdapter;
import javafx.event.*;
import javafx.fxml.FXML;
import javafx.scene.Scene;
import javafx.scene.canvas.*;
import javafx.scene.control.Button;
import javafx.scene.input.KeyEvent;
import javafx.scene.paint.Color;
import javafx.scene.text.*;
import model.*;
import observer.IObserver;


/**
 * Created by loic on 22/09/16.
 */
public class MainWindowController implements IObserver {

    @FXML Canvas boardCanvas;
    @FXML Text score;
    @FXML Button restartButton;


    private ModelAdapter adapter;
    private IModel model;
    private int squareSize=100;
    private int squarePadding=10;
    private int[] boardPosition={30,0};
    private int fontSize=60;


    /**
     * Load component required to the view
     * @param adapter
     * @param model
     * @param scene
     */
    public void loadComponent(ModelAdapter adapter, IModel model, Scene scene){
        this.adapter=adapter;
        this.model=model;
        this.update(); // Draw board

        // Catch keyboard keys
        scene.setOnKeyPressed(new EventHandler<KeyEvent>() {
            @Override
            public void handle(KeyEvent event) {
                if(event.getCode().toString().equals("UP")){
                    goUp(null);
                }
                else if(event.getCode().toString().equals("DOWN")){
                    goDown(null);
                }
                else if(event.getCode().toString().equals("LEFT")){
                    goLeft(null);
                }
                else if(event.getCode().toString().equals("RIGHT")){
                    goRight(null);
                }
            }
        });


    }

    @FXML protected void goUp(ActionEvent event) {
        this.adapter.goUp();
    }
    @FXML protected void goDown(ActionEvent event) {
        this.adapter.goDown();
    }
    @FXML protected void goLeft(ActionEvent event) {
        this.adapter.goLeft();
    }
    @FXML protected void goRight(ActionEvent event) {
        this.adapter.goRight();
    }

    @Override
    public void update() {
        this.draw();
    }

    @FXML private void restartGame(ActionEvent event){
        IModel model=new Board(4,4);
        ModelAdapter adapter=new ModelAdapter((Board) model);
        adapter.addObserver(this);
        adapter.addRandomNumber();

        this.adapter=adapter;
        this.model=model;
        this.update();

    }

    /**
     * Draw the grid
     */
    private void draw(){

        // Set score font and draw
        this.score.setFont(new Font(40));
        if(this.adapter.isLoosed()){
            this.score.setText("Score : " + this.model.getScore() + "\n You loose !!!");
        }
        else{
            this.score.setText("Score : " + this.model.getScore());
        }

        // Get board
        int[][] board=this.model.getBoard();

        // Draw board
        GraphicsContext gc = boardCanvas.getGraphicsContext2D();
        gc.clearRect(0,0,500,500);
        gc.setFill(Color.rgb(187,173,160));
        gc.fillRect(this.boardPosition[0],this.boardPosition[1], ((this.squareSize+squarePadding)*board.length)+squarePadding, ((this.squareSize+squarePadding)*board[0].length)+squarePadding);

        // Draw cells
        for(int i=0; i<board.length;i++) {
            for (int j = 0; j < board[i].length; j++) {
                // Get value
                int value=board[i][j];

                // Apply theme
                switch (value){
                    case -1:
                        gc.setFill(Color.rgb(202,192,180));
                        break;
                    case 2:
                        gc.setFill(Color.rgb(236,226,217));
                        break;
                    case 4:
                        gc.setFill(Color.rgb(237,222,199));
                        break;
                    case 8:
                        gc.setFill(Color.rgb(241,175,115));
                        break;
                    case 16:
                        gc.setFill(Color.rgb(242,151,94));
                        break;
                    case 32:
                        gc.setFill(Color.rgb(242,151,94));
                        break;
                    case 64:
                        gc.setFill(Color.rgb(244,123,96));
                        break;
                    case 128:
                        gc.setFill(Color.rgb(233,206,115));
                        break;
                    case 256:
                        gc.setFill(Color.rgb(233,206,115));
                        break;
                    case 512:
                        gc.setFill(Color.rgb(237,197,84));
                        break;
                    case 1024:
                        gc.setFill(Color.rgb(234,197,57));
                        break;
                    case 2048:
                        gc.setFill(Color.rgb(233,193,43));
                        break;
                    default:
                        gc.setFill(Color.BLACK);
                        break;
                }

                // Build coordinates
                int x=this.boardPosition[0] + (j*this.squareSize);
                x+=(j+1)*squarePadding;
                int y=this.boardPosition[1] + (i*this.squareSize);
                y+=(i+1)*squarePadding;

                // Draw cell
                gc.fillRect(x,y, this.squareSize, this.squareSize);

                // Build number font color
                if(value>2048) {
                    gc.setFill(Color.WHITE);
                }
                else{
                    gc.setFill(Color.BLACK);
                }

                // Draw if value is greeter than 0
                if(value>0){
                    // Ajuste font position
                    String strValue=""+value;
                    int localFontSize=fontSize;
                    if(strValue.length()==3){
                        localFontSize=localFontSize/2;
                    }else if(strValue.length()==4){
                        localFontSize=localFontSize/3;
                    }
                    else if(strValue.length()>4){
                        localFontSize=localFontSize/4;
                    }
                    gc.setFont(new Font(localFontSize));
                    // Write value
                    gc.fillText(strValue, x + (this.squareSize / 2) - ((localFontSize/4)+strValue.length()*localFontSize/5) , y + (this.squareSize / 2) + (localFontSize /3));
                }
            }
        }
    }

}