Amazon Cart With Classes

tallant-awc.rb

class Cart
  def initialize
    @the_cart = []
  end
  
  def add(item, quantity)
    @the_cart << { :item => item, :quantity => quantity }
  end
  
  def total
    @the_cart.map{|i| i[:item].price * i[:quantity]}.inject(:+)
  end
  
  def list
    list = "<ul>\n"
    @the_cart.each do |i|
      list += "<li>#{i[:item].name}: $#{i[:item].price} <span>(x#{i[:quantity]})</span></li>\n"
    end
    list += "</ul>\n"
  end
end

class Item
  attr_accessor :name, :price
  
  def initialize(name, price)
    @name = name
    @price = price
  end
end

ipad = Item.new("iPad 2", 499)
imac = Item.new("iMac 27", 1699)
macbook = Item.new("MacBook Air 13", 1299)

shopping_cart = Cart.new
shopping_cart.add(ipad, 2)
shopping_cart.add(imac, 1)
shopping_cart.add(macbook, 1)
puts shopping_cart.total # => 3996

css = "<style>h1{text-align:center}#container{width:400px;margin:0 auto;}li{list-style-type:none;}h5{color:green}span{float:right;}</style>"
markup = "<h1>Your Cart</h1>\n<div id='container'>\n#{shopping_cart.list}<h5>Your Total: $#{shopping_cart.total}</h5>\n</div>"

afile = File.new("view_cart.html", "w")
output = "#{css}\n#{markup}"

afile.puts output
afile.close