Siin on minu lahendus

store.rb

@@ -1 +1,126 @@
-# Yout little input goes here!
+require 'rubygems'
+require 'json'
+
+class Item
+  attr_accessor :name, :size, :color, :category, :in_store, :available, :price
+
+  def initialize(item)
+     @name=item["name"]
+     @size=item["size"]
+     @color=item["color"]
+     @category=item["category"]
+     @price=item["price"]
+     @in_store=item["in_store"]
+     @available=item["available"]
+  end
+end
+
+class Store
+  attr_writer :total_sale
+
+  def initialize
+    @total_sale = 0.0
+  end
+
+  def total_sale
+    @total_sale.round(2)
+  end
+
+  def import_items(file_name)
+    @items = []
+    JSON.parse(File.read(file_name)).each {|i| 
+      @items << Item.new(i)
+    }
+  end
+
+  def search(options)
+    items = @items
+
+    options.each { |key,value|
+      if key == :available
+        items = items.select {|item| item.in_store > 0}
+      elsif key == :in_store
+        items = items.select {|item| item.in_store == value.to_f}
+      else
+        items = items.select {|item| item.send(key).downcase == value.to_s.downcase}
+      end
+    }
+    return items
+  end
+
+  def items_sorted_by(symb, order)
+    if order == :asc
+      @items.sort_by { |item| item.send(symb.to_s) }
+    else
+      @items.sort_by { |item| item.send(symb.to_s) }.reverse
+    end 
+  end
+
+  def categories
+    cat = []
+    @items.uniq { |i| i.category }.each do |c|
+      cat << c.category
+    end
+    return cat
+  end
+
+  def unique_articles_in_category(category)
+    ui = []
+    @items.select {|item| item.category == category}.uniq { |i| i.name}.each do |c|
+      ui << c.name
+    end
+    return ui
+  end
+
+  class Cart
+    attr_accessor :store, :items, :total_cost
+
+    def initialize(store)
+      @store = store
+      @items = []
+      @total_cost = 0.0
+    end
+
+    def add_item(item, qty=1)
+      qty.times{
+        if item.in_store > 0
+          @items << item
+          item.in_store -= 1
+        end
+      }
+      return @itmes  
+    end
+
+    def total_items
+      @items.size
+    end
+
+    def unique_items
+      @items.uniq
+    end
+
+    def total_cost
+      @items.each do |item|
+        @total_cost += item.price.to_f 
+      end
+      @total_cost.round(2)
+    end
+
+    def checkout!
+      @items.each do |item|
+        @store.total_sale += item.price.round(2)
+      end
+    end
+  end
+end
+
+=begin
+s1 = Store.new
+s1.import_items('items.json')
+c1 = Store::Cart.new(s1)
+last_item_in_stock = s1.search(:in_store => 1).first
+c1.add_item(last_item_in_stock, 3)
+puts last_item_in_stock.name
+puts last_item_in_stock.price
+puts last_item_in_stock.in_store
+=end