find account by id; show account full name

lib/gnucash/account.rb

@@ -1,9 +1,28 @@
 module Gnucash
   class Account
+    attr_accessor :name
+    attr_accessor :type
+    attr_accessor :id
+
     def initialize(book, node)
+      @book = book
       @node = node
       @name = node.xpath('act:name').text
       @type = node.xpath('act:type').text
+      @id = node.xpath('act:id').text
+      @parent_id = node.xpath('act:parent').text
+      @parent_id = nil if @parent_id == ""
+    end
+
+    def full_name
+      prefix = ""
+      if @parent_id
+        parent = @book.find_account_by_id(@parent_id)
+        if parent and parent.type != 'ROOT'
+          prefix = parent.full_name + "::"
+        end
+      end
+      prefix + name
     end
   end
 end

lib/gnucash/book.rb

@@ -15,6 +15,10 @@ module Gnucash
       build_accounts
     end
 
+    def find_account_by_id(id)
+      @accounts.find { |a| a.id == id }
+    end
+
     private
 
     def build_accounts