board.rb

class Board

        attr_accessor :board
        def initialize
            # @empty_square = ""
            @board = Array.new(9, "")
        end
    
    def board_positions()
		new_board = []
		board.each_with_index do |value, index|
			if value == "x" || value == "o"
				new_board.push(value)
			else
				new_board.push(index + 1)
			end
		end
		new_board
    end

    def update(position, symbol) #this updates the space on the board.
            # @board[position] == @empty_square
            @board[position.to_i] = symbol
    end

    def valid_space?(position)
        if @board[position.to_i] != ""
            false
        else
            true
        end
    end

    def valid_input?(position)
        if position.to_i >= 1 && position.to_i <= 9 && position =~ (/\d/)
            true
        else
            false
        end
    end    

    def full_board?
        board.count("") == 0       
    end

    def winner?(symbol)
        board[0] == symbol && board[1] == symbol && board[2] == symbol ||
        board[3] == symbol && board[4] == symbol && board[5] == symbol ||
        board[6] == symbol && board[7] == symbol && board[8] == symbol ||
        board[0] == symbol && board[3] == symbol && board[6] == symbol ||
        board[1] == symbol && board[4] == symbol && board[7] == symbol ||
        board[2] == symbol && board[5] == symbol && board[8] == symbol ||
        board[0] == symbol && board[4] == symbol && board[8] == symbol ||
        board[2] == symbol && board[4] == symbol && board[6] == symbol

    end
end