class Rover {
  int x;
  int y;
  String direction;
  final int plateauWidth;
  final int plateauHeight;

  Rover({
    required this.x,
    required this.y,
    required this.direction,
    this.plateauWidth = 100,
    this.plateauHeight = 100,
  });

  void turnLeft() {
    const leftTurns = {
      'N': 'W',
      'W': 'S',
      'S': 'E',
      'E': 'N',
    };
    direction = leftTurns[direction]!;
  }

  void turnRight() {
    const rightTurns = {
      'N': 'E',
      'E': 'S',
      'S': 'W',
      'W': 'N',
    };
    direction = rightTurns[direction]!;
  }

  void moveForward() {
    switch (direction) {
      case 'N':
        y = (y + 1) % (plateauHeight + 1);
        break;
      case 'E':
        x = (x + 1) % (plateauWidth + 1);
        break;
      case 'S':
        y = (y - 1) % (plateauHeight + 1);
        if (y < 0) y += plateauHeight + 1;
        break;
      case 'W':
        x = (x - 1) % (plateauWidth + 1);
        if (x < 0) x += plateauWidth + 1;
        break;
    }
  }

  void execute(String commands) {
    for (var i = 0; i < commands.length; i++) {
      final command = commands[i];
      switch (command) {
        case 'L':
          turnLeft();
          break;
        case 'R':
          turnRight();
          break;
        case 'M':
          moveForward();
          break;
      }
    }
  }
}