import javax.swing.JPanel;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;

import java.io.FileInputStream;
import java.io.IOException;

public class Map extends JPanel {

	private final int TILE_WIDTH = 20;
	private final int TILE_HEIGHT = 20;
	private final int TILE_SEPARATION = 1;

	private final int TILE_PATH = 0;
	private final int TILE_WALL = 1;
	private final int TILE_BOX = 2;
	private final int TILE_TARGET = 3;
	private final int TILE_PLAYER = 4;

	private int rows;
	private int columns;
	private int[][] mapData;

	private Player player = null;

	public Map() {
		System.out.println("Constructor called!");
	}
	
	public void paintComponent(Graphics g) {
		g.setColor(Color.WHITE);
		g.fillRect(0, 0, getSize().width, getSize().height);

		drawLevel(g);
	}

	public void loadLevel(String filePath) {
		
		try {		
			FileInputStream inputStream = new FileInputStream(filePath);

			rows = inputStream.read();
			columns = inputStream.read();

			mapData = new int[rows][columns];

			for (int row = 0; row < rows; row++) {
				for (int column = 0; column < columns; column++) {
					
					int mapValue = inputStream.read();
					System.out.print(mapValue + " ");
					mapData[row][column] = mapValue;

					if (mapValue == TILE_PLAYER) {
						player = new Player(row, column);
					}

				
			}
				System.out.println("");
			}

			System.out.println("Level size = " + rows + "," + columns);

		} catch (IOException exception) {
			exception.printStackTrace();
		}
 
	}

	private void drawLevel(Graphics g) {
		if (mapData != null) {

			int x = 0;
			int y = 0;

			// Map drawing.
			for (int row = 0; row < rows; row++) {
				for (int column = 0; column < columns; column++) {
					Color tileColor = getTileColor(row, column);
					g.setColor(tileColor);
					g.fillRect(x, y, TILE_WIDTH, TILE_HEIGHT);
					x += TILE_WIDTH + TILE_SEPARATION;

				}
				x = 0;
				y += TILE_HEIGHT + TILE_SEPARATION;
			}

			// Player drawing.
			if (player != null) {
				int playerX = (player.getColumn() * (TILE_WIDTH + TILE_SEPARATION));
				int playerY = (player.getRow() * (TILE_HEIGHT + TILE_SEPARATION));
				player.draw(g, playerX, playerY);
			}
		}
	}

	private Color getTileColor(int row, int column) {
		if (mapData[row][column] == TILE_PATH) {
			return Color.BLACK;
		} else if (mapData[row][column] == TILE_WALL) {
			return Color.GRAY;
		} else if (mapData[row][column] == TILE_BOX) {
			return Color.ORANGE;
		} else if (mapData[row][column] == TILE_TARGET) {
			return Color.RED;
		}
		return Color.YELLOW;
	}

	public void update(int key) {
		if (key == KeyEvent.VK_RIGHT) {
			System.out.println("here?");
			System.out.println("Player is at (" + player.getRow() + "," + player.getColumn() + ")");
			if (player.getColumn() < (columns - 1)) {
				player.setPosition(player.getRow(), player.getColumn() + 1);
			}

          //player.setPosition(...
        } else if(key == KeyEvent.VK_LEFT) {
           
        } else if(key == KeyEvent.VK_DOWN) {
            
        } else if(key == KeyEvent.VK_UP) {
           
        }

        repaint();
	}
 
}