tile.rb

require 'byebug'
require_relative 'board.rb'

class Tile
  attr_accessor :is_bomb, :status, :neighbor_bomb_count

  DIRECTIONS = [
    [-1, -1],
    [-1, 0],
    [+1, -1],
    [0, -1],
    [0, +1],
    [-1, +1],
    [+1, 0],
    [+1, +1]]

  def self.neighbors_coords(pos, board)
    result = []
    row, col = pos
    DIRECTIONS.each do |coord|
      shift_row, shift_col = coord
      neighbor_row, neighbor_col = row + shift_row, col + shift_col
      if board.in_bounds?([neighbor_row, neighbor_col])
        result << [neighbor_row, neighbor_col]
      end
    end
    result
  end

  def self.neighbors(pos, board)
    Tile.neighbors_coords(pos, board).map { |coord| board[*coord] }
  end

  def initialize(is_bomb)
    @is_bomb = is_bomb
    @status = :hidden
  end

  def reveal
    self.status = :revealed
  end

  def flag
    self.status = :flagged
  end

  def unflag
    self.status = :hidden
  end

  def flagged?
    status == :flagged
  end

  def toggle_flag
    flagged? ? unflag : flag
  end

  def revealed?
    status == :revealed
  end

  def neighbor_bomb_count
    @neighbor_bomb_count
  end

  def is_bomb?
    is_bomb
  end

  def to_s
    case status
    when :hidden
      "*"
    when :revealed
      if is_bomb?
        "B"
      else
        neighbor_bomb_count == 0 ? "_" : neighbor_bomb_count.to_s
      end
    when :flagged
      "F"
    end
  end
end