module ActsAsCsv
    #where should this go?
    def self.method_missing name, *args
        i = @headers.index(name)

        return if i.nil?

        @csv_contents.each do |c|
            puts c[i]
        end
    end

    def self.included(base)
        base.extend ClassMethods
    end

    def self.method_missing name, *args
        i = @headers.index(name)

        return if i.nil?

        @csv_contents.each do |c|
            puts c[i]
        end
    end

    module ClassMethods
        def acts_as_csv
            include InstanceMethods
        end
    end

    module InstanceMethods
        def read
            @csv_contents = []
            filename = self.class.to_s.downcase + '.txt'
            file = File.new(filename)
            @headers = file.gets.chomp.split(', ')
            file.each do |row|
                @csv_contents << row.chomp.split(', ')
            end
        end

        attr_accessor :headers, :csv_contents

        def initialize
            read
        end
    end
end

class RubyCsv # no inheritance! You can mix it in
    include ActsAsCsv
    acts_as_csv
end

m = RubyCsv.new
puts m.headers.inspect
puts m.csv_contents.inspect
m.one

# OUTPUT:
#["one", "two"]
#[["1correct", "1wrong"], ["2correct", "2wrong"], ["3correct", "3wrong"], ["4correct", "4wrong"], ["5correct", "5wrong"]]
#./grep.rb:93: undefined method `one' for #<RubyCsv:0x3fd3e18> (NoMethodError)