package com.practical.demo.Project;

public class WalkingRobotWithSwitch {

	private int x;
	private int y;

	public static void main(String[] args) {

		WalkingRobotWithSwitch robot = new WalkingRobotWithSwitch();

		System.out.println(robot.Move(5, 2, "SOUTH", "RW2LW4R"));

	}

	public String Move(int inputX, int inputY, String direction, String walkString) {

		this.x = inputX;
		this.y = inputY;
		this.faceDirection = direction;

		int steps = 0;

		for (int i = 0; i < walkString.length(); i++) {

			String walkSide = String.valueOf(walkString.charAt(i++));

			if (i < walkString.length()) {

				walkString.charAt(i++);

				steps = Integer.parseInt(String.valueOf(walkString.charAt(i)));

				doWalk(steps, walkSide);

			} else {
				doWalk( 0, walkSide);
			}
		}
		return new StringBuilder("(").append(this.x).append(", ").append(this.y).append(") ,").append(this.faceDirection).toString();
	}

	private String faceDirection;


	public void doWalk(int steps, String walkDirection) {
		switch (faceDirection) {

		case "SOUTH":
			if (walkDirection.equalsIgnoreCase("R")) {
				x = x - steps;
				faceDirection = "WEST";
			} else {
				x = x + steps;
				faceDirection = "EAST";
			}

			break;
		case "NORTH":
			if (walkDirection.equalsIgnoreCase("R")) {
				x = x + steps;
				faceDirection = "EAST";
			} else {
				x = x - steps;
				faceDirection = "WEST";
			}

			break;
		case "EAST":
			if (walkDirection.equalsIgnoreCase("R")) {
				y = y - steps;
				faceDirection = "SOUTH";
			} else {
				y = y + steps;
				faceDirection = "NORTH";
			}

			break;
		case "WEST":
			if (walkDirection.equalsIgnoreCase("R")) {
				y = y + steps;
				faceDirection = "NORTH";
			} else {
				y = y - steps;
				faceDirection = "SOUTH";
			}
			break;
		}

	}

}