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package com.comp301.a02adventure;

public class MapImpl implements Map {

  private final int width;
  private final int height;
  private final int numItems;

  private final Cell[][] cells;

  public MapImpl(int width, int height, int numItems) throws IllegalArgumentException {
    this.width = width;
    if (this.width <= 0) {
      throw new IllegalArgumentException("Width less than 0");
    }
    this.height = height;
    if (this.height <= 0) {
      throw new IllegalArgumentException("Height less than 0");
    }
    this.numItems = numItems;
    cells = new Cell[width][height];
    for (int i = 0; i < width; i++) {
      for (int j = 0; j < height; j++) {
        cells[i][j] = null;
      }
    }
  }

  @Override
  public int getWidth() {
    return width;
  }

  @Override
  public int getHeight() {
    return height;
  }

  @Override
  public Cell getCell(int x, int y) throws IndexOutOfBoundsException {
    if (x > width) {
      throw new IndexOutOfBoundsException();
    }
    if (y > height) {
      throw new IndexOutOfBoundsException();
    }
    return cells[x][y];
  }

  @Override
  public Cell getCell(Position position) {
    if (position.getX() > width) {
      throw new IndexOutOfBoundsException();
    }
    if (position.getY() > height) {
      throw new IndexOutOfBoundsException();
    }
    return cells[position.getX()][position.getY()];
  }

  @Override
  public void initCell(int x, int y) {
    cells[x][y] = new CellImpl(x, y);
  }

  @Override
  public int getNumItems() {
    return numItems;
  }
}