chessboard.rb

class Board
  attr_reader :size
  attr_accessor :board

  def initialize(size)
    @size ||= size
    @board ||= clear
  end

  def clear
    @board = Array.new(@size) { Array.new(@size) { "" } }
  end
end

class ChessGame
  attr_accessor :board

  def initialize
    @board = Board.new(8).board
    populate
  end

  def output
    @board.each { |row| p row }
  end

  def populate
    @board.each_index do |i|
      case i
      when 0
        pieces("black", 0)
      when 1
        pawns("black",1)
      when 6
        pawns("white", 6)
      when 7
        pieces("white",7)
      end
    end
  end

  def pieces(color,row)
    piece_order = ["rook", "knight", "bishop", "queen","king","bishop","knight","rook"]
    @board[row] = piece_order.map{|piece_name| color + " " + piece_name} if color == "black"
    @board[row] = piece_order.map{|piece_name| color + " " + piece_name}.reverse if color == "white"
  end

  def pawns(color,row)

    num_pawns = @board[row].length
    num_pawns.times do |column|
      @board[row][column] = "#{color} pawn"
    end
  end
end

# Piece = Struct(:name, :loc)

ChessGame.new.output