package sample;

import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.input.MouseEvent;
import javafx.scene.shape.*;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;

import java.awt.event.MouseListener;

public class Cell extends StackPane implements EventHandler<MouseEvent> {

    //row, col in grid
    private int x, y;
    private int size;

    //Shape objects
    private Rectangle rect;
    private Circle object;

    /**
     * Creates cell object given x, y and size
     * @param x horizontal coordinate of Cell in the grid
     * @param y vertical coordinate of Cell in the grid
     * @param mazeSize  Size of Maze
     */
    public Cell(int x, int y, int mazeSize)
    {
        //Set maze size
        size = mazeSize;

        //Individual cell sizes. Based on maze size
        double size = 800.00/mazeSize;

        //Initialize Cell Sizes
        this.setPrefSize(size, size);
        this.setStyle("-fx-background-color: black;");
        this.setAlignment(Pos.CENTER);

        //Set Cell position
        this.x = x;
        this.y = y;

        //Draw white rectangle and add button click
        rect = new Rectangle(size - 2, size - 2, Color.WHITE);
        this.getChildren().add(rect);

        ///If at starting Cell add player
        if(x == 0 && y == 0)
        {
            object = new Circle(size/5, Color.RED);
            this.getChildren().add(object);
        }

        //If at n, n add goal
        else if(x == mazeSize - 1 && y == mazeSize - 1)
        {
            object = new Circle(size/5, Color.GOLD);
            this.getChildren().add(object);
        }
        rect.setOnMouseClicked(this);
    }

    /**
     * Changes Cell color. If cell is White, go Black. Vice versa.
     * WHITE represents open space. BLACK represents wall
     */
    private void setCellType()
    {
        if(rect.getFill().equals(Color.WHITE))
            rect.setFill(Color.BLACK);
        else
            rect.setFill(Color.WHITE);
    }

    /**
     * Removes mouse click in Cell
     */
    public void removeMouseClick()
    {
        rect.setOnMouseClicked(null);
    }

    /**
     * Returns manhattan distance for heuristic
     * @return  integer manhattan distance
     */
    public int manhattanDistance()
    {
        return Math.abs(x - (size - 1)) + Math.abs(y - (size - 1));
    }

    @Override
    public void handle(MouseEvent mouseEvent)
    {
        setCellType();
    }
}