garden.rb

class Garden
  attr_reader :layout, :row_0, :row_1

  def initialize(layout, two=nil)
    @row_0, @row_1 = layout.split("\n")

    @layout = layout.gsub("\n", "")
  end

  def alice
    codes_to_plants( codes_for(:alice) )
  end

  def bob
    codes_to_plants( codes_for(:bob) )
  end

  def charlie
    codes_to_plants( codes_for(:charlie) )
  end

  def david
    codes_to_plants( codes_for(:david) )
  end

  def eve
    codes_to_plants( codes_for(:eve) )
  end

  def names
    [:alice, :bob, :charlie, :david, :eve]
  end

  def codes_for(name)
    position = names.index(name)
    starter = 2 * position
    ender = starter + 1
    @row_0[starter..ender] + @row_1[starter..ender]
  end

  def codes_to_plants(codes)
    codes.chars.collect{|char| code_to_plant(char)}
  end

  def code_to_plant(code)
    case code
    when "R" then :radishes
    when "G" then :grass
    when "V" then :violets
    when "C" then :clover
    else raise("Don't have a plant for #{code.inspect}")
    end
  end

end